US20180312308A1

US20180312308A1 - Container

Info

Publication number: US20180312308A1
Application number: US15/740,374
Authority: US
Inventors: John Hein; Robert Tipper; David Williams
Original assignee: Dubois Ltd
Current assignee: Dubois Ltd
Priority date: 2015-06-30
Filing date: 2016-06-30
Publication date: 2018-11-01
Also published as: US20180186521A1; GB2540051A; GB2540050B; WO2017001854A1; EP3317202A1; GB2540051B; EP3317203A1; GB2540050A; GB201611394D0; WO2017001855A1; GB201611396D0; GB201511426D0

Abstract

A container with a closure includes an opening defined by a neck having a central axis. The closure includes a lid and a body. The body defines a conduit between first and second ends, the first end defining an open mouth. The lid is movable between an open configuration and a closed configuration, in which the lid covers the open mouth in the closed configuration. The body includes an external face, and the lid includes an internal face intended to overlap at least a portion of the external face when the lid is in the closed configuration. The body is attached to the container with the open mouth in communication with the opening of the container, and the body and lid cooperate with one another to provide snap-fitting engagement therebetween to releasably secure the lid to the body in the closed configuration when the body is attached to the container.

Description

FIELD OF THE INVENTION

The present disclosure relates to containers having closures more particularly, but not exclusively, to containers having ‘squeeze-open’ closures. The present disclosure also relates to such closures.

BACKGROUND OF THE INVENTION

A known squeeze-open container is described in WO95/23743. The container is disc-shaped and takes the form of a base, which defines a chamber for product, and a lid intended to be releasably attached to the base, in order to define a closure for the chamber. Releasable attachment is achieved via a snap-fit engagement between the lid and the base, which also serves to enable easy detachment of the lid from the base, upon squeezing of the lid.

SUMMARY OF THE INVENTION

An object of the present disclosure is to provide improvements or alternatives to the containers described and illustrated in WO95/23743.
Aspects of the present disclosure are set forth in the accompanying independent claims. Optional features of embodiments are set out in the dependent claims.
According to an aspect of this disclosure, a container is provided having a closure mounted thereto. The container comprises an opening defined by a neck. The closure comprises a lid and a body. In some embodiments, the neck comprises a central axis.
The body may define a conduit between a first end and a second end of the body, wherein the first end defines an open mouth of the body. The lid may be movable between an open configuration and a closed configuration, wherein the lid is arranged to cover the open mouth of the body when in the closed configuration. The body and lid of the closure may be of plastics construction.
In some embodiments the body comprises an external face and the lid includes an internal face intended to overlap at least a portion of said external face of the body when the lid is in the closed configuration.
In some embodiments, the body is attached to the container such that the open mouth of the body is in communication with the opening of the container, and the body and lid are configured to cooperate with one another to provide snap-fitting engagement therebetween in order to releasably secure the lid to the body in the closed configuration when the body is attached to the container. In this way, a closure configured for snap-fit engagement between a lid and body is attached to a container. The container itself may not be arranged for snap-fit opening and closing, however a snap-fit opening and closing mechanism is provided to the container by virtue of the closure attached to the container.
In some embodiments, the body of the closure comprises a side wall extending between the first and second ends. The region of the side wall proximal the open mouth of the body may be arranged to flex e.g. when the side wall is pressed in the direction of the central axis of the container, when the body is mounted onto the container.
In some embodiments, the conduit defined by the body is mounted around the neck of the container. In some embodiments, when the closure is mounted onto the container, the neck of the container extends through the conduit from the second end to a location proximal the first end e.g. wherein the second end of the body is provided proximal the container.
In some embodiments a space is provided between a portion of the body proximal the open mouth of the body and the neck of the container. Said space between the body of the closure and the neck of container may be configured such that flexing of the body in the region of the side wall proximal the open mouth is permitted e.g. when the side wall is pressed in the direction of the central axis of the neck of the container. For example, the space may be configured such that the body in the region of the side wall proximal the open mouth may flex in order to disengage the snap-fitting engagement between the lid and the body.
In some embodiments, the closure is releasably attached to the container.
In some embodiments, the side wall of the body is attached to the neck of the container via one or more attachment formations provided on the body. For example, the or each attachment formation may be provided between the first and second ends of the body side wall. In some embodiments, the or each attachment formation is provided only in a region proximal the first end of the body (e.g.in the upper half of the body) wherein the first end of the body is provided distal the container. In some embodiments, the or each attachment formation is provided only in a region proximal the second end of the body (e.g.in the lower half of the body) wherein the second end of the body is provided proximal the container. In some embodiments, the or each attachment formation is provided on an external face of the body side wall. In some embodiments, the or each attachment formation is provided on an internal face of the body side wall.
In some embodiments the side wall of the body and the neck of the container comprise complementary attachment formations which are interengaged to attach the closure to the container.
In some embodiments the or each attachment formation of the body is in the form of a screw thread projecting from the side wall of the body.
In some embodiments, the neck of the container comprises a screw thread projecting from and extending around an internal or external face of the neck. The screw thread projecting from the side wall of the body may be configured to be complementary to the screw thread of the neck. In some embodiments, the screw thread of the neck and the screw thread of the body inter-engage to attach the closure to the container. In this way, the closure may be attached to the container via a screw thread arrangement.
In some embodiments, the screw thread of the body projects from and extends around an internal surface of the side wall of the body e.g. such that it may inter-engage a screw thread provided on an external face of the neck. In some embodiments, the screw thread of the body projects from and extends around an external surface of the side wall of the body e.g. such that it may inter-engage a screw thread provided on an internal face of the neck.
In some embodiments, the screw thread of the body is discontinuous thereby forming a plurality of discrete screw thread portions on the body. Thread free regions may be defined on the side wall of the body between the discrete screw thread portions.
In some embodiments, a depth is defined, orthogonal to the central axis of the container, between an outermost edge of the screw thread provided on the neck of the container and the surface of the container neck from which the screw thread extends e.g. the external face. In some embodiments, the screw thread of the neck is configured to provide ridges and interruptions between the ridges, wherein the defined depth varies between the ridges and the interruptions such that the ridges have a greater defined depth than the regions of the interruptions.
In some embodiments, interruptions are provided by regions defined around the neck in which there is a regions having no screw thread, a recess provided along a portion of screw thread, and/or some other portion of screw thread having a reduced depth as compared to the depth of the ridges.
In some embodiments, the screw thread formation of the neck is discontinuous and therefore comprises a plurality of discrete screw thread portions.
In some embodiments the discrete screw thread portions are arranged to define a space between adjacent screw thread portions, wherein the space is formed of a portion of the surface of the neck, from which the screw thread portions protrude. The space between adjacent screw thread portions can be thought of as forming an interruption between ridges defined by the screw thread portions. In some embodiments, the defined depth in the region of the interruption may be zero i.e. the interruption may be defined by the surface of the neck.
In some embodiments, the screw thread portions are spaced apart along the axial length of the neck. The screw thread portions may be formed with a taper at each end, in other words, the screw thread portions can be thought of as being cut away at each end. The depth of the screw thread from the face of the neck of the container in these tapered regions decreases along the length of the taper. In this way, interruptions having a reduced depth from the face of the neck of the container may be formed. The tapers may be configured to define a substantially planar surfaces around the neck of the container e.g. the planer surfaces may be tangential to the face of the container neck.
In some embodiments, the thread free regions of the body of the closure overlap the interruptions of the container neck when the closure is attached to the container. In other words the thread free regions of the body of the closure align with the interruptions of the container neck when the closure is attached to the container
In some embodiments the attachment formations are in the form of one or more resilient clips configured for engagement with the container e.g. for engagement with a screw thread or ring projecting from the neck of the container.
In some embodiments, the body comprises a plurality of resilient clips configured to form a series of hooks extending from the side wall of the body e.g. the internal face of the side wall.
The plurality of resilient clips may be spaced around the circumference of the body to form a ring, for example, configured to engage the projecting ring of the neck of the container. Additionally or alternatively, the plurality of resilient clips may be spaced around the circumference of the body and along its axial length to form a helical arrangement, for example, complementary to the screw thread of the container and configured to engage such a screw thread.
The or each resilient clip may comprise an arm configured to extend from the side wall of the body e.g. at an angle to the body. For example, the arm may extend at an acute angle to the side wall of the body.
In some embodiments the or each resilient clip is configured to flex such that the arm of the clip is configured to move towards the side wall of the body under application of a force towards the side wall i.e. away from the central axis. In some embodiments, when said force is removed, the arm returns to its original or at rest position. In some embodiments, the resilient clips are configured such that said force is applied by the neck of the container e.g. by the screw thread or ring projecting from the neck of the container, as the body is mounted onto, i.e. around, the neck of the container. In this way, the resilient clips are arranged to flex around the screw thread or ring projecting from the neck of the container, as the body is mounted onto the container.
In some embodiments, the free end of the arm of the resilient clip is configured to engage the screw thread or ring projecting from the neck of the container.
In some embodiments, the attachment formation comprises a snap fit formation. The container and closure may comprise complementary formations configured for snap-fit engagement with each other when the closure is attached to the container.
In some embodiments, any other suitable means for attaching the closure to the container may be alternatively or additionally be used e.g. resistance fit. In some embodiments, a combination of screw thread, resilient clip, and/or snap-fit attachment formations may be used.
In some embodiments, the extent to which the internal face of the lid overlaps the external face of the body varies around the lid. Variation of the extent to which the lid overlaps the body may provide a first overlapping region and a second overlapping region, wherein the first overlapping region overlaps the external face of the body to a greater extent than the second overlapping region.
In some embodiments the first overlapping region defines a tab pressable towards the side wall of the body in order to flex the side wall of the lid and thereby disengage the snap-fitting engagement between the lid and the body.
In some embodiments, a void is defined by the side wall of the lid e.g. by the difference in the extent to which the side wall of the second overlapping region and the tab overlap the body. The void may be provided adjacent the second overlapping region.
The lid may comprise a pair of tabs and/or voids. More than two tabs and/or voids may be used. For example, 3, 4 or 5 tabs and/or voids may be used. Alternatively, a single tab and/or void can be used. As will be understood, the number of voids may equal the number of tabs.
In some embodiments, the tabs and/or voids are provided diametrically opposite each other. Any symmetrical or asymmetrical arrangement of tabs and/or voids may be used.
In some embodiments, the closure is configured such that the tab(s) of the lid align with the thread free regions of the side wall of the body when the lid is releasably secured to the body in the closed configuration. In other words, the tab(s) are configured to overlap the regions of the side wall of the base corresponding to the thread free regions. In this way, the tab(s) may also be aligned with the interruptions defined by the neck of the container i.e. the tabs may overlap regions of the body side wall adjacent the thread free regions. An advantage of this arrangement is that flexing of the side wall is not hindered by the screw thread of the body and/or neck in the regions overlapped by the tabs i.e. the regions pressed by a user.
Additionally or alternatively the side wall of the lid is provided with depressions positioned in the regions of the side wall which are aligned with the thread free regions of the side wall of the body, when the lid is releasably secured to the body in the closed configuration.
In some embodiments, the external face of the body of the closure defines a profile complementary to at least a portion of the profile defined by the side wall of the lid. The external face of the body may define one or more recesses configured to receive the or each tab defined by the lid, when the lid is releasably secured to the body.
In some embodiments, the external face of the body defines one or more projection, the or each projection configured to occupy at least a portion of a region defined by the or each void defined by the lid, when the lid is releasably secured to the body.
In some embodiments, the body of the closure comprises a neck portion coupled to a shoulder portion, wherein the neck is configured to be overlapped by the lid when the lid is releasably secured to the body. In some embodiments, the position of the shoulder of the body defines the complementary profile of the side wall. In some embodiments, the neck portion is coupled to a base portion of the body via the shoulder portion.
In some embodiments, the external face of the body defines a first formation extending in a direction radially away from the central axis, the internal face of the lid defines a second formation extending radially in the direction of the central axis, and wherein the second formation is configured for snap-fitting engagement over said first formation when the lid is applied to the body, in order to releasably secure the lid to the body in the closed configuration.
In some embodiments, the first formation defines a ridge, for example, between first and second ramp surfaces on the body.
The first ramp surface of the first formation may terminate distal the ridge, at the open mouth of the body. In some embodiments, the diameter at the mouth of the body is greater than the diameter of the body at the termination of the second ramp surface distal the ridge of the first formation. In some embodiments, the diameter at the mouth of the body is less that the diameter of the body at a crest of the ridge of the first formation.
In some embodiments, the second formation defines a ridge between first and second ramp surfaces on the lid.
In some embodiments, the lid of the closure comprises a side wall and a cover. The side wall may be coupled to the cover and extend to an edge distal the cover.
In some embodiments, at least a portion of the side wall of the lid overlaps the external face of the body by a distance of between 5-20 mm from a point of snap-fit engagement between the lid and the body to the edge distal the cover e.g. from the crest of the ridge defined by the second formation on the lid to a lower edge of the side wall. In some embodiments the side wall extends at least 5 mm from a point of snap-fit engagement, for example at least 8, 10, 12, 14, 16, 18 or 20 mm. For example, the side wall of the lid may extend between 8 mm and 16 mm from a point of snap fit engagement to an edge of the lid distal the cover.
In some embodiments, the or each tab overlaps the side wall of the body by a distance of between 5-20 mm from a point of snap-fit engagement between the lid and the body to the edge distal the cover e.g. from the crest of the ridge defined by the second formation on the lid to a lower edge of the side wall. In some embodiments the tab extends at least 5 mm from a point of snap-fit engagement, for example at least 8, 10, 12, 14, 16, 18 or 20 mm. For example, the tab of the lid may extend between 8 mm and 16 mm from a point of snap fit engagement to an edge of the lid distal the cover.
In some embodiments, the second overlapping region (or regions) overlaps the side wall of the body by less than 10 mm from a point of snap-fit engagement between the lid and the body to the edge of the lid distal of the cover e.g. from the crest of the ridge defined by the second formation of the lid to an edge of the side wall of the lid distal the cover. For example, the second overlapping region (or regions) may overlap the side wall of the body for example by between 4 and 8 mm from a point of snap-fit engagement between the lid and the body to the edge of the lid distal of the cover.
In some embodiments the closure is configured for sealing engagement with the opening of the container. In some embodiments, a wadding material is carried by the lid of the closure such that the wadding material extends across the opening of the container when the closure is attached to the container and the lid is in the closed configuration. The wadding material may be arranged to be compressed by a rim of the opening of the container, when the closure is attached to the container and the lid is in the closed configuration.
In some embodiments, the wadding material serves as a carrier for a metallic foil material, to be sealingly coupled to the opening of the container e.g. by induction or conduction welding.
In some embodiments, the lid of the closure is coupled to the body via a hinge element. In some embodiments, the hinge element is provided equidistant from the or each tab and/or depression e.g. the depressions indicating an optimal region for the side wall to be pressed towards the body to facilitate release of the lid from the body.
In some embodiments, the closure comprises a tamper evident component. The tamper evident component may comprise a strip or band. The tamper evident component may be coupled to the body and/or the lid when attached to the closure.
In some embodiments, the tamper evident component is configured to occupy a void of the lid.
In some embodiments the lid is configured for sealing engagement with the body of the closure.
The lid may include an annular and resilient tongue, which defines a cantilever. The tongue may be configured so that an underside of said cantilever is in biased sealing contact with the rim of the body when the lid is releasably attached to the body. In some embodiments, the tongue extends from an internal surface of the lid. In some embodiments, the tongue is configured for continuous sealing contact with the lid.
Optionally, the tongue extends in a direction orthogonal to the central axis. In some embodiments, the tongue extends radially inwardly from the side wall of the lid.
In some embodiments, the tongue extends in a direction away from the cover of the lid, for example, at an acute angle to the cover of the lid, for example such that an angle of between 20 and 70° is formed between the tongue and the cover of the lid, e.g., between, 30 and 60°, e.g., between 40 and 50° from the cover. In some embodiments, the tongue extends from the lid at an angle of 40° to the cover of the lid. In some embodiments this the tongue may extend at an angle of 50° to the cover of the lid.
An acute angle may also or alternatively be formed between the side wall of the lid and the tongue. In some embodiments, the tongue extends from the lid at an angle of between 40 and 50° to the side wall of the lid e.g. 40° or 50° to the side wall of the lid.
In some embodiments, the tongue is provided with a first surface facing an internal surface of the cover, and a second surface facing an internal face of the side wall of the lid. In some embodiments, the first and second surfaces are substantially parallel to each other. In some embodiments, the second surface is arranged such that it is in biased sealing contact with the upper surface of the rim of the body, when the lid is releasably attached to the body.
In some embodiments, the cover and side wall of the lid are coupled together by a transition portion. The tongue may extend from the transition portion of the lid. In some embodiments, the tongue extends from the internal cover surface.
In some embodiments, the annular and resilient tongue may be proximal but spaced from the internal cover surface. The annular and resilient tongue may have a thickness at its root. In some embodiments, the spacing between the annular and resilient tongue and the internal cover surface is no greater than three times the thickness of the root. In some embodiments, the spacing between the annular and resilient tongue and the internal cover surface is no greater than the length of the tongue.
The tongue may be configured to terminate at an upper surface of the rim of the body, when the lid is releasably attached to the body, to provide sealing engagement between the lid and the body. Optionally, the free end of the tongue comprises a flat portion configured for abutment with the upper surface of the rim.
In some embodiments, the tongue has an internal diameter configured to be arranged flush with an internal wall of the open mouth when the lid is releasably attached to the body.
In some embodiments, a sacrificial bead is provided on the upper surface of the rim of the mouth of the body, the sacrificial bead being configured for sealing a foil or film to the rim of the open mouth e.g. by induction or conduction welding. The sacrificial bead may be positioned at a location on the upper surface of the rim separate from the point of contact between the tongue and the upper surface of the rim.
In some embodiments, the rim of the open mouth defines an internal diameter for the open mouth of the body. The tongue may terminate at a radial distance beyond the internal diameter of the open mouth.
In some embodiments, the first ramp surface of the first formation is provided such that the rim of the open mouth of the body is in radial alignment with a free end of the resilient tongue provided on the lid, when the lid is releasably attached to the body, to provide sealing engagement between the lid and the body.
The first ramp surface of the lid may be sealingly engaged with the second ramp surface of the body, when the lid is releasably attached to the body. In some embodiments, the second ramp surface of the body includes a circumferential groove, recess or other depression, and the ridge of the lid is configured to lock into said groove, recess or other depression, when the lid is releasably attached to the body.
In some embodiments, the lid includes a resilient ring projecting from an internal surface thereof. The ring may be configured to be arranged in continuous sealing contact with the rim of the open mouth on the body, when the lid is releasably attached to the body.
In some embodiments, the resilient ring projects from the internal cover surface of the lid. In an alternative, the resilient ring may project from the transition portion of the lid between the cover and the lid side wall.
The resilient ring may have an internal diameter configured to be arranged flush with the internal wall of the open mouth, when the lid is releasably attached to the body.e.g the resilient ring may be in radial alignment with the rim of the open mouth of the body.
In some embodiments, the lid includes a resilient ring arranged to project from an internal surface of the lid such that it is configured to sealingly engage an internal surface of the open mouth of the body, when the lid is releasably attached to the body. For example, the ring may project from the internal cover surface. Alternatively, the ring may project from the transition portion. In some embodiments, the ring projects from the lid in a direction parallel with the central axis of the mouth, when the lid is releasably attached to the body.
In some embodiments, the lid includes an abutment surface extending orthogonal to the central axis of the mouth or body e.g. orthogonal to the or a ring extending parallel to the central axis. The abutment surface may be configured to seal against the upper edge of the rim at the open mouth on the body, when the lid is releasably attached to the body.
In some embodiments, the internal profile of the lid defines a step between the circumferential side wall and the internal cover surface of the lid. Said step may include a shoulder configured to seat in sealing engagement with an upper surface of the rim at the open mouth of the body, when the lid is releasably attached to the body. In some embodiments, the shoulder is configured to extend from the side wall of the lid no further than the internal diameter of the rim of the open mouth.
In some embodiments, the lid includes an internal groove configured to receive the ridge on the body. The upper surface of said groove may be arranged in sealing contact with a portion of the first ramp surface on the body, when the lid is releasably attached to the body. In some embodiments, the lid additionally comprises a resilient ring or annular resilient tongue as previously described.
In some embodiments, the body includes an annular and resilient tongue configured for sealing engagement with an internal side wall of the lid, when the lid is releasably attached to the body. In some embodiments, the annular and resilient tongue is arranged between the first formation and the rim at the open mouth of the body. In some embodiments, the lid additionally comprises a resilient ring or annular resilient tongue as previously described.
In some embodiments, a circumferential point seal is provided between the ridge on the body and a portion of lid side wall above the second projection, when the lid is releasably attached to the body.
In some embodiments, the second formation defines a continuous ring projecting from the sidewall of the lid.
In some embodiments, an O-ring is carried on an underside of the lid, for creating a seal against an upper surface of the rim on the body. The O-ring may be arranged and configured to deform and create a seal as the lid is snap-fittingly engaged on the body. In some embodiments, the O-ring is located in a groove formed in the lid. The groove may have an open end exposed in an axial direction of the body. In some embodiments, the O-ring does not project beyond the mouth of the groove.
In some embodiments, a plurality of concentric rings are formed on the or a shoulder which depends downwards from the lid, concentric with a central axis of the lid (i.e. the central axis of the body when the lid is attached to the body). The concentric rings may be configured to sealingly engage against the upper surface of the rim, e.g. a ring on the upper surface of the rim may be intended to engage a surface of the shoulder located between two rings on the rim. In some embodiments, a plurality of concentric rings are formed on the upper surface of the rim. The concentric rings may be configured to form a seal on the or a shoulder of the lid, e.g. a ring on the shoulder may be intended to engage a surface of the rim located between two rings on the rim.
In some embodiments the container is formed of a rigid material e.g. glass. In some embodiments, the container may be formed of a plastics material.
For the avoidance of doubt, the lid, body, neck of the container and/or the container may all comprise a central axis, each of which may be coaxial.
In accordance with a further aspect of the disclosure, a closure is provided for use with a container as described above.
In some embodiments, the closure comprises a lid and a body of plastics construction. The body may define a conduit between a first end and a second end of the body, wherein the first end defines an open mouth of the body. The lid may be movable between an open configuration and a closed configuration, the lid being arranged to cover said open mouth of the body when in the closed configuration.
In some embodiments, the body comprises an external face and the lid includes an internal face intended to overlap at least a portion of said external face of the body when the lid is in the closed configuration.
In some embodiments, the body is configured for attachment to a container to mount the closure onto the container, and the body and lid are configured to cooperate with one another to provide snap-fitting engagement therebetween in order to releasably secure the lid to the body in the closed configuration.
In accordance with a further aspect of the disclosure a container having a closure is provided. The container comprises an opening defined by a neck. The closure comprises a lid and a body.
In some embodiments, the neck has a central axis.
In some embodiments, the lid and body of the closure are of plastics construction.
The body may define a conduit between a first end and a second end of the body, the first end defining an open mouth of the body.
In some embodiments, the lid is movable between an open configuration and a closed configuration, the lid being arranged to cover said open mouth of the body when in the closed configuration.
In some embodiments the body is mounted onto the container by a complementary screw thread arrangement such that the open mouth of the body is in communication with the opening of the container, and the body and lid are configured to cooperate with one another to provide engagement therebetween in order to releasably secure the lid to the body in the closed configuration, when the body is attached to the container.
In some embodiments, the neck of the container comprises an external face provided with a screw thread. The body may define an internal face provided with a screw thread complementary to that of the neck of the container. In some embodiments, the screw thread of the neck and the screw thread of the body inter-engage to attach the closure to the container. In this way, the closure is attached to the container via a screw thread arrangement. Alternatively, in some embodiments, the neck of the container comprises an internal face provided with a screw thread. The body may define an external face provided with a screw thread complementary to that of the neck of the container.
In some embodiments, the body of the closure comprises a side wall extending between the first and second ends. The side wall of the body may comprise the screw thread of the body.
In some embodiments, the conduit defined by the body is arranged around the neck of the container. The neck of the container may be configured to extend through the conduit from the second end to a location proximal the first end, when the body is mounted onto the container e.g. the second end of the body is proximal the container when the body is mounted on the container.
In some embodiments, the lid of the closure is configured for sealing engagement with the body.
In some embodiments the lid is coupled to the body via a hinge element.
In some embodiments, the closure comprises a tamper evident component. For example, the tamper evident component comprises a strip or band. The tamper evident component may be configured such that, when attached to the closure, it is coupled to the body and/or the lid.
In some embodiments, the closure is configured for sealing engagement with the opening of the container. In some embodiments, a wadding material is carried by the lid of the closure such that the wadding material extends across the opening of the container when the closure is attached to the container and the lid is in the closed configuration. The wadding material may be arranged to be compressed by a rim of the opening of the container, when the closure is attached to the container and the lid is in the closed configuration.
In some embodiments, the wadding material serves as a carrier for a metallic foil material, to be sealingly coupled to the opening of the container e.g. by induction or conduction welding.
In some embodiments, the body of the closure has an external face, and the lid includes an internal face intended to overlap at least a portion of said external face of the body when the lid is in the closed configuration.
It will be appreciated that the optional features described above may be applicable to any aspect of the disclosure. All combinations contemplated will not be explicitly recited here for the sake of brevity.

BRIEF DESCRIPTION OF THE DRAWINGS

Other aspects, advantages or features of the disclosure will be apparent from the appended claims and the following description of exemplary embodiments, made by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a perspective view of a first embodiment of a closure and a container;

FIGS. 2a and b are schematic cross-sectional views of the closure and container of FIG. 1;

FIG. 2c is a plan view of the container of FIG. 1;

FIGS. 3 and 4 are perspective views of the closure and container of FIG. 1;

FIG. 5 is an exploded view of the closure and container of FIG. 1;

FIG. 6 is a perspective view of a second embodiment of a closure and container;

FIG. 7a is a schematic cross-sectional view of the closure and container of FIG. 6 taken through section A-A as shown in FIG. 6;

FIG. 7b is a schematic cross-sectional view of the closure and container of FIG. 6 taken perpendicular to section A-A as shown in FIG. 6;

FIGS. 8 and 9 are perspective views of the closure and container of FIG. 6;

FIG. 10 is an exploded view of the closure and container of FIG. 6;

FIG. 11 is a perspective view of a third embodiment of a closure and container;

FIG. 12 is a schematic cross-sectional view of the closure and container of FIG. 11;

FIG. 13 is an exploded view of the closure and container of FIG. 11;

FIG. 14 is a perspective view of a forth embodiment of a closure and container;

FIG. 15 is a schematic cross-sectional view of the closure and container of FIG. 14;

FIG. 16 is an exploded view of the closure and container of FIG. 14;

FIGS. 17 to 20 are perspective views of a fifth embodiment of a closure and container;

FIG. 21 is an exploded view of the closure and container of FIGS. 17 to 20;

FIGS. 22 and 23 are schematic cross-sectional views of the closure and container of FIGS. 17 to 20;

FIGS. 24 to 28 are perspective views of a sixth embodiment of a closure and container;

FIG. 29 is an exploded view of the closure and container of FIGS. 24 to 28;

FIGS. 30 and 31 are schematic cross-sectional views of the closure and container of FIGS. 24 to 28;

FIG. 32 is a perspective view of a seventh embodiment of a closure and container;

FIG. 33 is a schematic cross-sectional view of the closure and container of FIG. 32;

FIGS. 34 to 36 are perspective views of the closure and container of FIG. 32;

FIGS. 37 to 41 are perspective views of an eighth embodiment of a closure and container;

FIGS. 42 and 43 are schematic cross-sectional views of the closure and container of FIGS. 37 to 41;

FIGS. 44 to 56 are respectively schematic cross-sectional views of a ninth to a twenty first embodiment of a closure; and

FIGS. 57 to 60 are schematic cross-sectional views of a twenty second embodiment of a closure.

DETAILED DESCRIPTION OF EMBODIMENT(S)

Referring firstly to FIGS. 1 to 5, a closure is indicated generally at 2 and is configured to be fitted to a container 4. The container 4 comprises a neck 6, having a central axis, coupled to a container body portion 8 via a shoulder portion 10. In this embodiment, the neck 6 of the container has a diameter that is smaller than the diameter of the container body portion 8. However, it will be appreciated that any shape of container can be used.
The closure 2 takes the form of a body 12 and a lid 14. The body 12 comprises a side wall 12 a defining a conduit having a first end 16 and a second end 18, the first end 16 defining an open mouth 20 of the body (see FIG. 5). The body 12 also has a central axis which is coaxial with the central axis of the neck of the container when the closure is attached to the container.
The body 12 of the closure is intended to be mounted on the container 4 by attaching the body to the neck 6 of the container 4, as will be described in more detail below. As can be seen in FIGS. 2a and 4, the body 12 is arranged to be attached to the container neck 6 such that a rim 6 a of the neck 6 protrudes beyond the open mouth 20 of the body 12, wherein the rim 6 a of the neck defines the opening of the container 4.
The lid 14 is intended to act as a cover for the open mouth 20 of the body 12. Accordingly, the lid 14 also acts as a cover for the opening of the container 4, when the body 12 is attached to the container neck 6 and the lid 14 is releasably secured to the body 12 of the closure.
As will be described in more detail below, the lid 14 is a push-fit on the body 12 of the closure 2. Moreover, the body 12 and lid 14 are configured to cooperate with one another, to provide snap-fitting engagement therebetween, in order to releasably secure the lid 14 to the body 12 in a closed configuration. It will be understood that the lid 14 is movable between a closed configuration and an open configuration as it is respectively secured to and released from the body.
As can be seen clearly in FIGS. 2a and b , the body 12 has an external face 22, and the lid 14 includes an internal face 24 intended to overlap at least a portion of said external face 22 of the body 12, when the lid 14 is releasably secured thereto.
Cooperation between the lid 14 and the body 12 serves as a closure mechanism for the container 4 when the body 12 is attached to the container 4. More particularly, the external face 22 of the body 12 defines a first formation 26 extending in a direction radially away from the central axis of the body, whereas the internal face 24 of the lid 14 defines a second formation 28 extending radially in the direction of the central axis of the body. Conveniently, the lid is configured so that the second formation 28 will snap-fittingly engage over said first formation 26, in order to releasably secure the lid 14 to the body 12.
In the illustrated embodiment, the second formation 28 extends from a side wall 14 a of the lid 14; the internal face 24 is part of the side wall 14 a of the lid 14. The arrangement is such that the side wall can be pressed in the direction towards the central axis of the body 12 (i.e. radially inwardly), in order to flex the side wall 14 a and thereby disengage the second formation 28 from snap-fitting engagement with the first formation 26.
In the illustrated embodiments, the lid 14 is circular and configured to adopt an elliptical configuration when squeezed (e.g. at two diametrically opposed points on the lid 14), in order to release the lid 14 from the body 12. In particular, the lid 14 is configured to flex and allow the second formation 28 to ride over the first formation 26, in order for the lid 14 to become detached from the body 12.
It will be appreciated that the containers described in WO95/23743 (the content of which is incorporated herein by reference) have a lid and body having similar complementary snap-fit formations and therefore describe a lid which releases in a similar manner.
The neck 6 of the container 4 has an external face 30, and the body 12 of the closure has an internal face 32 intended to overlap at least a portion of said external face 30 of the neck of the container 4 when the body 12 is attached thereto.
The external face 30 of the neck 6 of the container comprises a screw thread formation 34 extending around the neck 6. The internal face 32 of the body 12 is provided with a screw thread 42 extending from the internal face 32 in the direction of the central axis of the body and complementary to the screw thread 34 of the container neck 6. The body 12 is attached to the neck of the container 4 by rotating the body relative to the container to engage of the respective screw threads 34, 42 in the usual manner.
Advantageously, the closure 2 can be fitted to a screw thread container such that the container can be opened using the snap-fit and release functionality of the closure, rather than the screw thread opening mechanism of the container. Since many standard containers 4 are provided with a screw thread 34 for fixing a closure to the container, the closure 2 described herein can be easily fitted to existing containers without requiring any modification to the container itself, in order to provide a container which can be opened and closed by a snap-fit and release mechanism. This can be preferable to modifying the neck of the container itself to apply squeeze open functionality since such modification could require changes to the manufacture of the container which may result in cost implications in the manufacture of the container.
Advantageously, by introducing snap-fit closure and release functionality to a container 4 via a closure 2 as described herein, i.e. via a body which can be attached to the neck of a container, rather than by modifying the neck of the container, there is no need for any changes to be made to the filling line used to fill the containers. The closure i.e. lid and body, can be attached and treated as a single part as is the case with a simple known screw cap. Therefore no costly modifications to the fill line are required. Further, the lid and body can be formed such that the combined weight is similar to or the same as known screw caps.
By introducing snap-fit closure and release functionality to a container 4 via a closure 2 as described herein, i.e. via a body which can be attached to the neck of a container, rather than by modifying the neck of the container itself, greater design scope for the container is provided. If the body and container were to be injection moulded as a single part i.e. snap-fit closure and release functionality applied directly to the container, limitations might be placed on the size and shape of the container relative to the neck based on tooling constraints e.g. constraints related to collapsing core manufacture techniques. By having a separate container and body, the container can be produced by a number of methods, separate from the manufacture of the body, such as blow moulding or vacuum formation, to both lower the tooling investment required and offer greater design scope.
To facilitate release of the lid 14 from the body 12, the body 12 must have a degree of flexibility in the region adjacent the open mouth 20, i.e. the region in which the first formation 26 is provided, such that the open mouth of the body can flex. As can be seen from FIG. 2a , the open mouth 20 of the body 12 is spaced apart from the external face 30 of the neck 6 such that a space 36 is formed therebetween. In this way, the open mouth 20 of the body is free to flex as required for snap fit release of the lid from the body.
This spacing is particularly advantageous where the container is formed of a rigid material e.g. glass, which does not have sufficient flexibility to permit flexing in the region adjacent the open mouth 20 of the body, i.e. the region in which the first formation 26 is provided. In contrast, in embodiments wherein the container is made from a material which does permit flexing in the region adjacent the open mouth 20 of the body, i.e. the region in which the first formation 26 is provided, spacing between the internal face of the body 32 and the external face of the neck 30 may not be necessary.
Advantageously, the closures described herein can be used with containers formed of any material irrespective of the inherent flexibility of the container. Where a rigid container is used e.g. a container made from glass, sufficient flexibility can be provided by spacing the open mouth of the body from the neck of the container.
In some embodiments, the screw thread 42 provided on the inner face of the body 12 may act to brace the body 12 and therefore potentially reduce the flexibility of the body 12 in the region adjacent the open mouth. To overcome this, in some embodiments, the screw thread formation 42 of the body 12 is configured to be discontinuous and therefore comprises a plurality of screw thread portions 42 a extending around the inner wall of the body 12. The screw thread portions 42 a are arranged around the inner wall of the body 12 such that regions free from any screw thread are defined between adjacent screw thread portions 42 a. This has an advantage in that the thread free regions of the body are not braced by the screw thread 42 and so the rim of the body has increased ability to flex when the lid is pressed at a position overlapping these regions, thereby facilitating the snap release function of the closure. In this way, the closure 2 is attached to the container 4 via a complementary screw thread arrangement configured to permit additional flexing of the body to facilitate snap-release of the lid 14.
In some embodiments, indicia or other indicators are provided on the container or body, corresponding to the thread free regions of the body, in order to indicate to a user and to direct a user to press the side wall of the lid of the container at the portions of the lid which overlaps these regions of increased flexibility i.e. the thread free portions of the body.
The screw thread formation 34 of the neck 6 of the container is configured to protrude from an external face 30 of the neck, thereby defining a depth, d, orthogonal to the axial height of the container (see FIG. 2a ). The depth is defined between an outermost edge of the thread i.e. the portion of the thread furthest from the central axis of the neck, and the external face 30 of the neck.
The screw thread 34 of the container neck 6 is configured to provide ridges and interruptions between the ridges, wherein the defined depth, d, varies between the ridges and the interruptions therebetween such that the ridges have a greater depth from the external face of the neck than the regions of the interruptions. In some embodiments, interruptions are provided by regions defined around the neck in which there is no screw thread, a shallow portion of screw thread, and/or some other portion of screw thread having a reduced depth.
In the embodiment shown in FIG. 5, the screw thread formation 34 is discontinuous and therefore comprises a plurality of discrete screw thread portions 34 a. The screw thread portions 34 a are spaced apart along the axial length of the neck and are formed with a taper 38 at each end, in other words, the screw thread 34 can be thought of as being cut away at each end. The depth of the screw thread from the external face of the neck of the container in these tapered regions decreases along the length of the taper. In this way, interruptions 40 having a reduced depth from the external face of the neck of the container are formed. The tapers are configured to define a substantially planar surface, as can be seen in FIGS. 2c and 5. As can be seen from FIGS. 2c and 5, the plane of the planar surfaces is tangential of the external face of the container neck 6.
The closure 2 is configured such that, when the body 12 is attached to the container 4 via the complementary screw thread arrangement, the thread free regions of the body are aligned with the interruptions 40 of the neck of the container 4, such that the thread free regions are positioned to overlay the interruptions 40.
FIG. 2a illustrates a cross section through the container through ridges defined by the screw thread 34. FIG. 2b illustrates a cross section through the container through interruptions 40 defined by the container neck. As can be seen by comparison of FIG. 2a with 2 b, in the regions corresponding to the interruptions 40 and which are overlapped by the thread free regions of the body, an increased space 36 is defined between the external face of the neck and the internal face of the body. Accordingly, increased flexing of the open mouth of the body is permitted.
By increasing the spacing between the neck and body in this manner, flexing of the side wall of the body is facilitated in this region. In other words, the screw thread 34 of the neck and/or the screw thread 42 of the body does not inhibit flexing of the body in these regions. Pressing the side wall of the lid towards this region of the body i.e. towards the region of increased spacing between the neck of the container and body, has the effect of improving the snap release functionality of the closure since increase flex in rim of the body is provided in these regions.
It will be appreciated that, in an alternative embodiment, the container and closure of FIGS. 1 to 5 may not include the thread free portions of the body and/or the interruptions of the container described above. In exemplary embodiments of closures of the kind shown herein, the first formation 26 of the closure mechanism between the lid 14 and the body 12 defines a ridge 44 between first and second ramp surfaces 44 a, 44 b on the body. The first ramp surface 44 a terminates distal the ridge 44, at the open mouth of the body 12. Moreover, the second formation 28 defines a ridge 46 between first and second ramp surfaces 46 a,46 b on the lid 14.
In exemplary embodiments, the second ramp surface 46 b of the lid 14 is intended to be driven over the first ramp surface 44 a of the body 12, when the lid 14 is being applied to the body 12. The lid 14 and body 12 are of plastics construction, such that movement of the ridge 46 on the lid 14 over the ridge 44 on the body 12 brings about the snap-fitting engagement between the lid 14 and the body 12. Such an arrangement has been found to be particularly effective in providing a releasable connection between the lid 14 and the body 12 that is ideally suited for one-handed ‘squeeze and release’ operations.
In the illustrated embodiment, the side wall 14 a of the lid 14 is arranged to extend from a cover 14 b of the lid 14 terminating in a lower edge 48, such that it overlaps at least a portion of a side wall 12 a of the body, when the lid is releasably secured to the body. The external face 18 of the body is part of the side wall 12 a of the body. The side wall 14 a of the lid 14 overlaps the side wall 12 a of the body 12 by a predetermined length such that there is sufficient overlap for the side wall 14 a of the lid to be pressed in the direction of the central axis of the body 12 in order to disengage the lid from the body.
The side wall 14 a of the lid 14 may extend at least 5 mm from a point of snap-fit engagement between the lid and the body to an edge of the lid 14 distal the cover 14 b, e.g. from a crest of the ridge 46 of the second formation 28 to the lower edge 48 of the side wall 14 a. In some embodiments the side wall extends at least 8 mm from a point of snap-fit engagement, for example at least 8, 10, 12, 14, 16, 18 or 20 mm. For example, the side wall 14 a of the lid 14 may extend between 8 mm and 16 mm from a point of snap fit engagement to an edge of the lid 14 distal the cover 14 b.
In exemplary embodiments, such as those illustrated herein, the first formation 26 is continuous, e.g. circumferential relative to the mouth of the body 12. The second formation 28 may also be continuous. However, in other exemplary embodiments, the second formation is made up of discrete projections, spaced radially from one another, about the inner circumference of the lid side wall. For example, there may be 2 or more projections (preferably 8 or 12, or more).
In those embodiments where both the first and second formations 26, 28 are continuous (e.g. proscribing a circle), the closure mechanism may be configured such that the first ramp surface 46 a of the lid is sealingly engaged with the second ramp surface 44 b of the body 12, when the lid 14 is releasably secured to the body 12, e.g. as shown in FIG. 2.
As shown in FIGS. 1 to 5, the body 12 includes a circumferential side wall 12 a extending between the first and second ends 16,18 of the body 12. A circumferential groove 50 is provided in the external face 22 of the side wall 12 a. The closure 2 is configured such that the side wall 14 a of the lid 14 overlaps at least a portion of the side wall 12 a of the body 12 when the lid 14 is releasably secured to the body 12. The lid 14 is pressable into the groove 50 of the body 12 in order to cause the lid 14 to separate from the body 12 with a sliding action. When the lid 14 is pressed into the groove 50, the lid, and to a lesser extent, the body flex to allow the second formation 28 to ride over the first formation 26 in order for the lid 14 to become detached from the body 12.
The groove 50 has a pair of sides. The second ramp surface 44 b of the first formation 26 on the body 12 forms a first side of the groove 50 on the body 12. The second formation 28 on the lid extends from the circumferential side wall of the lid 14 for snap fitting engagement over the first formation on the body 12, so that the first ramp surface 46 a on the lid is adjacent the second ramp surface 44 b on the body 12 (that is, the upper side of the groove), when the lid is releasably secured on the body 12.
The side of the groove 50 nearest the second end 18 of the body 12 (i.e. the second side of the groove 50), is provided by a circumferential ramp formation 52 which projects from the side wall 12 a of the body. The ramp formation 52 has a concave surface 54 a which forms the second side of the groove (that is, the lower side of the groove). The concave surface 54 a engages the side wall of the lid 14, for example the lower edge 48 of the side wall, and forces the lid 14 away from the body 12 as the side wall of the lid 14 is pressed into the groove 50. The side of the groove nearest the second end of the body acts as a ramp having an upward incline, and against which the lid 14 engages, when pressed into said groove 50, thereby causing the lid 14 to be driven up and off the body 12.
The ramp formation 52 includes a concave portion 54 which extends from the circumferential side wall 12 a of the body. The concave surface 54 a is provided by the concave portion 54. The ramp formation also includes a flange 56 extending from the concave portion 54 in a direction towards the second end 18 of the body 12. In the exemplary embodiments shown in FIGS. 1 to 5, the flange 56 is substantially parallel to the side wall 12 a of the body 12 and is substantially flush with the side wall 14 a of the lid when the lid is releasably secured on the body 12. The lower edge 48 of the side wall of the lid extends to meet the ramp formation 52 when the lid is releasably secured on the body 12. This arrangement reduces the risk of the lid becoming prised off the body unintentionally and also provides the container with a smooth and aesthetically pleasing outer appearance.
The ramp formation 52 may also include a formation which leads into the concave side of the groove and which acts to facilitate an initial separating movement of the lid from the body, the formation being a convex formation. The convex formation may be provided by the transition 58 between the concave portion 54 and the flange 56.
The lid 14 of the closures of the kind shown herein can be configured for sealing cooperation with the container 4. Accordingly, the lid 14 can be used to seal the container 4, once the lid 14 is releasably secured to the body 12. This may be particularly advantageous where the container is used to store bulk product, such that the lid needs to be removed and replaced several times. This may also be advantageous where product to be stored in the container may be susceptible to leakage, in the absence of a seal, for example.
As shown in FIG. 2, a thin layer of wadding material 66 is carried on an underside of the lid 14, wherein the wadding material extends across the rim 6 a of the neck 6 a of the container 4, when the body is attached to the container and the lid 14 is releasably secured to the body 12. The wadding material 66 is arranged to be compressed by the rim 6 a of the neck, i.e. the rim of the neck defining an opening of the container, when the lid 14 is releasably secured to the body 12, in order to create a seal for the container. The wadding material 66 may serve as a carrier for a metallic foil 68 material, or other material, to be sealingly coupled with the rim 6 a of the neck of the container 4, e.g. by induction or conduction welding.
The lid 14 further defines an internal cover surface 62, which extends across the mouth of the body 12 when the lid 14 is releasably secured to the body 12. The wadding material 66 may be adhered to the lid (e.g. to the internal surface 62 of the cover 14 b). A tongue 60 is provided which extends radially inwardly from the side wall of the lid 14. The tongue 60 is configured such that it is provided proximal but spaced from the internal cover surface 62 such that a channel 64 is defined between the tongue 60 and the internal cover surface 62 (e.g. as can be seen most clearly in FIG. 2). The channel 64 of the lid is intended to house a periphery of the wadding 60, to hold it in place. As can be seen clearly in FIG. 2a , the channel 64 is outboard of the rim 6 a of the neck of the container, when the body is attached to the container and the lid 14 is releasably secured on the body 12.
In use, the closure 2 is attached to the container 4 via the complementary screw thread 34, 42 arrangement. When the body is attached to the container, the wadding material 66, and hence the metallic foil 68 carried by the wadding material 66, are pressed against the rim 6 a of the neck 6 of the container 4. In this configuration, the metallic foil 68 is sealingly coupled to the rim 6 a of the neck of the container e.g. by induction welding.
On first opening of the container 4, the closure 2 is removed either by unscrewing from the neck of the container or by squeezing the lid from the body. In doing so, the metallic foil 68, which is sealed onto the rim 6 a of the container neck, is separated from the wadding material 66, which is retained by the lid of the closure. The foil can then be removed from the container to access the contents of the container. To close the container, the closure is screwed back onto the neck or the lid is secured back on the body, the wadding material 66 being compressed by the rim 6 a of the container neck. On subsequently opening the container, the closure may be removed either by unscrewing the closure from the container, or alternatively by pressing the side wall of the lid towards the body to release the lid from the body, the body remaining attached to the container.
The closure 2 can be unscrewed from the container 4 in the same way as any screw thread cap, but there is also the option to use the snap-fit closure and release functionality provided by the snap-fitting engagement between the lid and the body, to open the container and access the contents. There is no requirement for education of the user of this container e.g. by a manufacturer, to teach the user how to release the lid from the body since the user can use the closure as a normal screw cap. However, once the user has understood the snap-release functionality of the lid and body, this can be used to obtain the benefits of easy removal and reapplication of the lid which can be used at the convenience of the user.
Containers and closures of the kind shown in FIGS. 6 to 10 are substantially the same as the kind shown in FIGS. 1-5. However, in the embodiments of FIGS. 6 to 10, the lid is configured such that the extent to which the side wall 14 a of the lid 14 overlaps the side wall 12 a of the body 12 varies to provide regions of relatively small overlap and regions of relatively large overlap. In regions of relatively large overlap (which form first overlapping regions) the side wall 14 a defines tabs 70 extending from the cover 14 b of the lid substantially parallel to the side wall 12 a of the body 12. In the regions of relatively small overlap (which form second overlapping regions), the side wall 14 a defines reduced side wall portions 72 extending from the cover 14 b of the lid substantially parallel to the side wall 12 a of the body 12. As can be seen from FIGS. 6 to 10, the tabs 70 extend from the cover 14 b of the lid by a greater distance than the reduced side wall portions 72 of the lid 14.
Due to this variation in the length of the side wall 14 a, voids 74 are defined in the side wall 14 a of the lid 14 between the tabs 70 and the reduced side wall portions 72, as can be seen clearly in FIGS. 8-10.
The tabs 70 are arranged such that they may be pressed in the direction of the central axis of the body 12 (as illustrated by the arrows in FIGS. 6 and 7 b), in order to flex the side wall 14 a and thereby disengage the second formation 28 from snap-fitting engagement with the first formation 26, in a similar manner to that previously described. In the illustrated embodiment, the lid 14 comprises a pair of tabs 70 diametrically opposite each other, however, any symmetrical or asymmetrical arrangement of tabs may be used. Further, it will be appreciated that more than two tabs may be used. For example, 3, 4 or 5 tabs may be used. Alternatively, a single tab can be used. As will be understood, the number of voids 74 will equal the number of tabs 70.
By providing tabs 70 which can be pressed to release the lid and reduced side wall portions 72 between the tabs 70, the amount of material required to manufacture the lid 14 can be reduced.
As shown in FIG. 7b , the tabs 70 are arranged to overlap the side wall 12 a of the body 12 by a given length, h, such that there is sufficient overlap for the tabs 70 to be pressed in the direction of the central axis of the body 12 in order to disengage the lid from the body. For example, the tabs 70 may extend at least 5 mm from a point of snap-fit engagement between the lid and the body to an edge of the lid distal the cover, e.g. from the crest of the ridge 46 of second formation 28 the lower edge 48 of the side wall 14 a. In some embodiments the tabs 70 may extend at least 8 mm from a point of snap-fit engagement, for example at least 10, 12, 14, 16, 18 or 20 mm. For example, the tabs 70 may extend between 8 mm and 16 mm from a point of snap-fit engagement.
The reduced side wall portions 72 of the lid 14, i.e. the regions of side wall between the tabs 70, overlap the side wall 12 a of the body 12 to a lesser extent than the tabs 70. For example, the reduced side wall portions 72 may overlap the side wall 12 a of the body by less than 10 mm, e.g. less than 8 mm, less than 6 mm or less than 4 mm, from a point of snap fit engagement between the lid and the body to an edge of the lid distal the cover, e.g. from the crest of the ridge 46 of second formation 28 the lower edge 26 of the side wall. For example, the reduced side wall portions 72 may overlap the external face 18 of the body by between 4 and 8 mm from a point of snap fit engagement. In these regions, pressing of the side wall towards the body is more difficult.
As with containers of the kind illustrated in FIGS. 1 to 5, the closure 2 of FIGS. 6 to 10 is attached to the container 4 by a screw thread connection. The screw thread 34 of the neck of the container is configured to form ridges and interruptions 40 therebetween, in the same manner as previously described. The screw thread formation 42 of the body 12 also defines thread free regions between adjacent screw thread portions 42 a in the same manner as previously described.
FIG. 7a illustrates a cross section through the container through ridges defined by the screw thread 34. FIG. 7b illustrates a cross section through the container through interruptions 40 defined by the container neck. As can be seen by comparison of FIGS. 7a and 7b , the closure 2 is configured such that, when the body is attached to the container via the complementary screw thread arrangement, the thread free regions of the body are aligned with the interruptions 40 of the neck of the container 4, such that the thread free regions are positioned to overlay the interruptions 40. In this way an increased space 36 is defined between the external face of the neck and the internal face of the body, thereby facilitating flexing of the side wall of the body in this region and consequently improving the snap release functionality of the closure.
As shown in FIG. 7b , the tabs 70 of the lid are arranged to overlap the thread free region of the body 12 (and consequently the regions of interruption 40 of the neck). By pressing the tabs in the direction of the central axis of the body 12 (as illustrated by the arrows in FIGS. 6 and 7 b), the additional flex in the side wall 12 a resulting from space 36 is exploited to facilitate disengagement of the second formation 28 from snap-fitting engagement with the first formation 26. Accordingly, improved release of the lid from the body is achieved.
Conversely, the regions of engagement between the screw thread 42 of the body and the screw thread 34 of the neck are overlapped by the reduced height portions 72. By pressing the side wall towards the central axis of the body (i.e. the central axis of the neck when the closure is on the neck) in this region, release of the lid is hindered by the relatively short overlap of side wall, by the bracing effect of the screw threads of the body, and by the screw thread 42 of the neck. Therefore, provision of the tabs 70 encourages a user to press the side wall of the lid at the point of most effective snap release functionality.
The side wall 12 a of the body can be thought of as comprising a neck portion 76, which is overlapped by the lid 14, and a base portion 78. The neck portion 76 and the base portion 78 are joined by a shoulder portion 80. The neck portion 76 has a diameter less than that of the base portion 78. The closure 2 is arranged such that at least a portion of the neck 76 is overlapped by the side wall 14 a of the lid 14, for example by the tabs 70 and the reduced side wall portions 72.
The side wall 12 a of the body 12, e.g. the neck 76, may comprise a formation or plurality of formations which are configured such that, when the lid 14 is releasably secured to the body 12, the formations occupy at least a portion of the region defined by the voids 74. For example, the formation(s) may comprise a projection or plurality of projections extending from the side wall 12 a of the body, e.g. extending from the neck 76. Such projection(s) may take the form of a ridge, a single protrusion or a plurality of protrusions extending from the side wall 12 a of the body 12, such that the projection or plurality of projections define a shape complimentary to at least a portion of the shape defined by the voids 74 of the lid. In this way, the lid may only be secured to the body when the voids 74 of the lid and the projection(s) of the body 12 are aligned. In other words, the length of the tabs is such that, when the lid 14 is positioned with the tabs 70 in alignment with the projection(s), the tabs 70 abut the projections and the first and second formations 26, 28 of the body 12 and lid 14 respectively are not brought close enough together to engage with each other in snap-fit engagement.
In exemplary embodiments, the side wall 12 a of the body 12 additionally or alternatively comprises a recess or plurality of recesses configured such that, when the lid is releasably secured to the body, the tabs 70 occupy at least a portion of the or each recess. Such recesses may be of complementary shape to the tabs 70. This arrangement has the effect that the lid 14 may only be secured to the body 12 when the tabs and recess(es) are aligned.
Accordingly, in this way, the lid 14 will only fit onto the body 12 in a limited number of predetermined orientations, for example 1, 2 etc. predetermined orientations; the predetermined orientations being determined by the relative positions of the voids of the lid and projections of the body and/or the relative positions of the tabs of the lid and recesses of the body. An advantage of this arrangement is that any design or labelling provided on the outer surfaces of the lid and body will be in alignment when the lid is replaced on the bofy, which can be particularly difficult to achieve with a screw thread cap.
In the embodiments of FIGS. 6 to 10, the shoulder 80 of the body 12 is shaped to compliment the lower edge 48 of the lid 14, in other words, to complement the shape defined by the tabs 70 and voids 74 of the lid 14. In this embodiment, the position of the shoulder 80 relative to the open mouth 20 of the neck 76, e.g. the distance of the shoulder 80 from the mouth 20, varies to form a profile complementary to that defined by the side wall 14 a of the lid. Since the base portion 78, i.e. the portion of the body below the shoulder 80, has a larger diameter than the neck 76, i.e. the portion of the body above the shoulder 80, and since the profile of the side wall 12 a defined by the shoulder 80 is complementary to the profile defined by the lid 14, the side wall 14 a of the lid 14 lies flush with the side wall 12 a of the base portion 78 i.e. the portion of the body 12 that is not overlapped by the lid 14, when the lid is releasably secured to the body 12.
This variation in the position of the shoulder 80 relative to the mouth of the body, complimentary to the variation in the lower edge 48 of the lid, results in the side wall of the body defining a pair of projections 82 and a pair of recesses 84. The pair of projections 82 are shaped to correspond to the pair of voids 74 of the lid such that each projection 82 is received by the respective void 74 when the lid is secured to the body. The pair of recesses 84 are shaped to correspond to the pair of tabs 70 of the lid such that each tab 70 is received by the respective recess 84 when the lid is secured to the body. This complimentary shaping of the lid and body ensures that the lid can only be secured to the body in a predetermined orientation. Of course, if the pair of tabs are positioned diametrically opposite each other, it is possible to secure the lid to the body in one of two predetermined orientations.
At least a portion of the shoulder 80, for example the portion of the shoulder 80 defining the recesses 84, comprises a concave surface 86 which engages the side wall of the lid 14, for example the lower edge of the side wall 48, and forces the lid 14 away from the body 12 as the side wall of the lid 14 is pressed into the recess 84. This is similar to the concave surface 54 a previously described in relation to the embodiment of FIGS. 1 to 5.
In the embodiments described herein, the open mouth 20 of the body comprises a rim 20 a. As discussed above, to facilitate the snap release functionality of the closure, it is advantageous if the rim 20 a of the body is spaced apart from the neck 6 of the container. In the embodiments described above, increased spacing between the rim of the body and the container is achieved by providing thread free regions on the body of the closure in alignment with, i.e. overlapping, interruptions 40 defined by the screw thread of the neck of the container.
In some embodiments, spacing between the rim 20 a of the body and the neck 6 of the container is increased by attaching the body of the closure to the neck via the lower portion of the body e.g. by attaching the second end of the body to the container. The rim of the body is then free to be spaced apart from the container. In some embodiments, the body is attached to the container via a complementary screw thread arrangement, wherein the screw thread of the body projects from the internal face of the body adjacent the second end of the body (e.g. the screw thread does not extend above the lower half of the body). In other words, the region of the body adjacent the snap-fit engagement formations is free from screw thread. The rim of the body can therefore be spaced apart from the neck of the container. In such embodiments, the screw threads of the container and/or body may be continuous.
Containers of the kind shown in FIGS. 11 to 13 are substantially the same as container 4 of the kind shown in FIGS. 1-5. However, in the embodiments of FIGS. 11 to 13, the body 12 does not comprise a screw thread, but instead the body 12 is attached to the neck of the container 4 by a plurality of resilient clips 86.
Resilient clips 86 are configured to form a series of hooks extending from the internal face of the body 12 and spaced around the circumference of the body 12 to form a ring (see FIG. 13). Each resilient clip 86 has a root 86 a, by which the clip is attached to the internal face 32 of the body 12, and an arm 86 b configured to extend from the root 86 a. The arm 86 b is configured to extend from the root 86 a in a direction towards the first end 16 of the body 12 and towards the central axis of the body 12 such that an acute angle is formed between the arm 86 b and the central axis of the body 12.
As can be seen from FIG. 12, the resilient clips 86 are configured to extend from a region of the body 12 proximal the second end 18, e.g. from an internal surface of the concave portion 54. The neck 6 of the container 4 includes a projecting ring 88 configured to project from the external surface 30 of the neck 6. For example, in the case where the container is a made of glass, the projecting ring 88 may also be formed of glass.
The resilient clips 86 are configured to flex such that, when a force is applied to the arm 86 b in the direction of the side wall, the arm 86 b is moved towards the side wall. When said force is removed, the resilient clip 86 springs back to its at rest position i.e. its original position.
The resilient clips 86 are arranged to attach the body 12 of the closure 2 to the neck 6 of the container 4 by hooking under the projecting ring 88 of the neck 6. In other words, the free end of the arm 86 b of the resilient clip 86 is configured to engage the projecting ring 88 (i.e. the underside of the ring) when the closure 2 is attached to the container 4.
To attach the closure to the container, the body 12 is positioned around the neck 6 of the container 4 and pushed down onto the container 4. In doing so, the arms 86 b of the resilient clips 86 are brought into contact with the projecting ring 88. As the closure 2 is pushed onto the container 4, a force is applied to the arms 86 b of the clips 86 by the projecting ring 88, in the direction of the side wall of the body i.e. away from the central axes of the neck and body, thereby causing the arms 86 b to move towards the side wall of the body and away from the neck of the container. In this way, the resilient clips 86 flex around the projecting ring 88 as the closure is attached to the container. In other words, the resilient clips 86 ride over the projecting ring 88 as the closure is pushed onto the container.
As the closure continues to be pushed onto the container, the free ends of the resilient clips 86 move past the projecting ring 88 such that a force is no longer applied to the clips 86 by the projecting ring 88. The resilient clips 86 therefore spring back to their original, at rest, position in which the free end of each clip 86 is spaced apart from the side wall of the body. In doing so, the free ends of the clips 86 engage the projecting ring 88 (i.e. the underside of the ring) to attach to closure to the container. In this way, the resilient clips 86 retain the closure 2 on the neck 6.
Since the resilient clips 86 are configured to extend from a region of the body 12 proximal the second end 18, e.g. from an internal surface of the concave portion 54, the body is attached to the neck via its second end i.e. the lower end. The region of the body 12 proximal the first end, i.e. proximal the open mouth, is not attached to the neck 6 of the container 4 but is spaced apart from the container thereby facilitating flexibility in the in the region adjacent the open mouth 20, i.e. the region in which the first formation 26 is provided, such that the open mouth of the body can flex to improve the snap-release function of the lid.
As shown in FIG. 13, the container has both a screw thread 34 and a projecting ring 88 configured to extend from the neck of the container. However, it will be understood that the container neck need not have a screw thread in containers according to this embodiment.
Containers of the kind shown in FIGS. 14 to 16 are substantially the same as container 4 of the kind shown in FIGS. 11 to 13. However, in the embodiments of FIGS. 14 to 16, the plurality of resilient clips 86 are configured to extend from the internal face 32 of the body side wall 12 a such that they are spaced around the circumference and along the axial length of the body 12 to form a helical arrangement. The helical arrangement formed is complementary to the screw thread 34 of the neck 6 of the container, such that the resilient clips 86 are configured to engage the screw thread 34 of the neck 6 to attach the body 12 to the container 4. The resilient clips 86 are configured to flex in the same manner as previously described in order to engage the screw thread of the neck of the container, rather than the projecting ring 88. Alternatively, the resilient clips 86 can be treated as a screw thread and closure 2 screwed onto the neck of the container in the usual manner.
Since the resilient clips 86 are arranged to flex under application of a force in the direction of the side wall, i.e. away from the central axis of the lid, flexibility of the body in the region proximal the open mouth is not inhibited by the resilient clips 86. On the contrary, the clips 86 are arranged to flex to permit movement of the open mouth of the body. When the lid (i.e. the lid overlapping the body) is pressed towards the central axis, the resilient clips 86 of the body are pressed against the neck of the container, thereby applying a force to the resilient clips in the direction towards the side wall, i.e. away from the central axis of the lid. The clips 86 are configured to flex on application of this force, as previously described, and hence permit flexing of the body 12, thereby facilitating the snap-fit and release functioning of the closure.
In some embodiments, the containers of the kinds shown in FIGS. 11 to 13 and 14 to 16 include a screw thread 34, the screw thread 34 projecting from the neck of the container and configured to form ridges and interruptions 40 therebetween, in the same manner as previously described in relation to the embodiments illustrated in FIGS. 1 to 10. FIGS. 12 and 15 show cross sections of the closure attached to the container for each respective embodiment, the cross section taken through the interruptions 40. As can be seen from these figures, increased spacing 36 is formed between the neck and the body in the regions of the interruptions 40 of the neck as compared to the spacing provided between the body and the ridges screw thread regions.
By increasing the spacing between the neck 6 and body 12 in this manner, flexing of the side wall of the body is facilitated in these regions of increased spacing i.e. in the regions in which the body overlaps the interruptions 40 of the neck 6. In other words, the screw thread 34 of the container does not inhibit flexing of the body in these regions. Pressing the side wall of the lid towards the regions of the body which overlap the interruptions 40 of the neck of the container has the effect of improving the snap release functionality of the closure since increase flex at the rim 6 a of the body is provided in these regions.
In some embodiments, indicia or other markers are provided on the container to indicate the regions of increased flexibility to a user and to direct a user to squeeze the lid of the container at the portions of the lid which overlaps these regions of increased flexibility.
In some embodiments, the lid of the kinds illustrated in FIGS. 11 to 13 and 14 to 16 may comprise tabs, the same as those described in relation to FIGS. 6 to 10. In other words, the closure may be formed of a body which is attached to the container via resilient clips 86, and a lid shaped to provide tabs which are complementary to recesses on the body as previously described in relation to FIGS. 6 to 10. In such embodiments, the closure may be attached to the container such that the tabs of the lid are aligned with the interruptions 40 of the neck of the container. In other words, the tabs are arranged to overlap the portions of the side wall of the body, which in turn overlap the interruptions 40 of the neck, when the body is attached to the container and the lid is secured to the body. By pressing the tabs in the direction of the central axis of the body 12, the additional flex in the side wall 12 a resulting from the increased space 36 between the body and neck in the region of the interruptions 40 is exploited to facilitate disengagement of the second formation 28 from snap-fitting engagement with the first formation 26. Accordingly, improved release of the lid from the body is achieved.
The lid 14 of embodiments described herein may be coupled to the body 12 by a hinge. Containers and closures of the kind shown in FIGS. 17 to 23 are substantially the same as the kind shown in FIGS. 6 to 10. However in the embodiments of FIGS. 17 to 23, the lid 14 is coupled to the body 12 by a hinge element.
The embodiment shown in FIGS. 17 to 23 comprises a body 12 having a neck portion 76, which is overlapped by the lid 14, and a base portion 78. The neck 76 and the base 78 are joined by a shoulder portion 80. The neck 76 has a smaller diameter than the base 78. The lid 14 is configured to overlap the neck when the lid 14 is releasably secured to the body 12, as previously described in relation to FIGS. 6 to 10.
The side wall 14 a of the lid 14 comprises a region of relatively long length and a region of relatively short length. In contrast to the container shown in FIGS. 6 to 10, the region of relatively long length defines a single tab 70 extending from the cover 14 b of the lid, substantially parallel to the side wall 12 a of the body 12, when the lid is releasably secured to the body. The region of relatively short length defines a single reduced side wall portion 72 extending from the cover 14 b of the lid, substantially parallel to the side wall 12 a of the body 12, when the lid is releasably secured to the body.
Due to this variation in the length of the side wall 14 a, a single void 74 is defined in the side wall 14 a of the lid 14 by the tab 70 and the reduced side wall portion 72, as can be seen clearly in FIG. 20.
The shoulder 80 of the body 12 is shaped to complement the shape of the lower edge 48 of the lid 14. In other words, the shoulder 114 is shaped to complement the shape defined by the tab 70 and void 74 of the lid 14. In this embodiment, the position of the shoulder 80 relative to the mouth of the body varies such that the distance between the shoulder 80 and the mouth of the body is smallest in the region corresponding to the void 74 of the lid and largest in the region corresponding to the tab 70 of the lid. As can be seen from FIG. 20, variation of the shoulder in this way defines a single recess 84, shaped such that, when the lid 14 is releasably secured to the body 12, the tab 70 occupies the region defined by the recess 84. This variation in the position of the shoulder 80 also defined a single projection 82 shaped such that, when the lid 14 is releasably secured to the body 12, the projection 82 occupies the space defined by the void 74.
A hinge component 90 is provided to couple the projection 82 of the body 12 to the reduced height portion 72 to the lid, thereby coupling the lid 14 to the body 12. The hinge component 90 is provided in the centre of the projection 82, i.e. equidistant from either side of the tab 70.
The outer face of the tab 70 defines a pair of depressions 92, for example positioned diametrically opposite each other, indicating an optimal position for the side wall 14 a to be pressed towards the body 12 in order to release the lid from the container (e.g. at the region of the lid which overlaps and is aligned with the thread free portions of the body and/or the interruptions 40 of the container). For example, each depression 92 is provided in the region of the side wall 14 a between 5 and 20 mm from a point of snap-fit engagement to an edge of the lid distal the cover e.g. from a crest of the ridge 46 of the second formation 28 to the lower edge 48 of the lid, for example, between 8 and 16 mm.
The depressions 92 are positioned equidistant from the hinge 90. By locating the depressions 92 in this position relative to the hinge 90, the lid 14 is pressed towards the body 12 at an optimal location to facilitate effective release of the lid 14 from the body 12.
The hinge component 90 is a live hinge. Alternatively, any other suitable hinge mechanism may be used, for example a hinge component comprising a hinge pin, a hinge component formed separately from the lid and/or body, a hinge comprising a plurality of hinge mechanisms, or any other suitable hinge as will be understood by those skilled in the art.
In use, to remove the lid 14 from the body 12, the tab 70 is pressed towards the body 12, preferably in the region of the depressions 92, in order to flex the side wall 14 a of the lid and thereby disengage the second formation 28 from snap-fitting engagement with the first formation 26. As the lid 14 is released from the body 12, the lid 14 pivots about the hinge 90 to occupy an open position. In this way, the lid and body remain coupled together while the container is in an open configuration. An advantage of this is that the container may be held in only one hand, leaving the other hand free to access the contents of the container.
As can be seen from FIGS. 18 to 20, the second formation 28 formed on the lid 14 is made up of a plurality of discrete projections, spaced radially from one another, about the inner circumference of the lid side wall 14 a.
The exemplary embodiment of FIGS. 24 to 31 comprises a container and closure of the kind illustrated FIGS. 17 to 23 adapted to include a tamper evident feature in the form of a strip 94.
In order to accommodate the tamper evident strip 94, the lid is provided with an additional void 74 in the tab 70, opposite the hinge 90, e.g. between the two depressions 92 previously described. Consequently the lid 14 comprises a pair of voids 74 positioned diametrically opposite each other and a pair of tabs 70 positioned diametrically opposite each other, wherein the hinge element 90 is provided coupled to the side wall of the lid 14 adjacent one void 74, and the tamper evident strip 94 is configured to occupy the other.
When in place on the closure 2 i.e. when the lid 14 is snap-fittingly secured to the body, the strip 94 is configured to occupy the region of the recess 84 defined by the body, in between the region occupied by the pair of tabs 70. In other words, the tamper evident strip 94 is arranged to occupy the additional void 74 provided opposite the hinge 90. Accordingly, when the tamper strip 94 is in place, a uniform and aesthetically pleasing appearance is provided, as shown in FIG. 24.
The neck 76 of the body is provided with a projection 96 extending circumferentially in the region of the recess 84 occupied by the strip 94, i.e. in the region of the recess 84 which is between that occupied by the tabs 70. The strip 94 is provided with a complementary projection 98 arranged to engage the projection 96 of the neck 76 (i.e. to engage the side of the projection 96 away from the lid).
When the tamper evident strip 94 is in place, the projection 98 of the strip 94 engages the projection 96 of the neck 76 of the body 12 and the strip 94, e.g. an edge of the strip, is fused to the lid 14 at a plurality of points along the edge of the strip 94. In this way, removal of the lid 14 is prevented while the tamper evident strip 94 is in place since the strip 94 is attached to the lid 14 and movement of the strip 94 away from the body is prevented by engagement of the projection 98 of the strip 94 with the projection 96 of the neck 76.
The tamper evident strip 94 also comprises a pull tab 100 extending from the strip 94. To remove the tamper evident strip 94, the pull-tab 100 is pulled away from the closure, thereby breaking the plurality of j oins between the lid 14 and the strip 94 (see FIG. 25). Once the tamper evident strip 94 has been removed, the lid 14 may be released from the body 12 in the manner previously described.
It will be appreciated that whilst the embodiments of FIGS. 17 to 31 are shown in relation to a closure configured for attachment to a container by means of a complementary screw thread arrangement, the resilient clip features described in relation to FIGS. 12 to 16 can alternatively be used.
FIGS. 32 to 36 illustrate a container 4 and closure 2, similar to the container and closure described in relation to FIGS. 1 to 5. The container 4 comprises a neck 6 coupled to a container body portion 8 via a shoulder portion 10. In this embodiment, the neck 6 of the container has a diameter that is smaller than the diameter of the container body portion 8 immediately below the shoulder 10. The container body portion 8 has a substantially square cross section, in contrast to those shown in FIGS. 1 to 23, wherein the cross section of the container body portion 8 is substantially circular.
The closure 2 takes the form of a body 12 and a lid 14 arranged for snap-fitting engagement and release between a closed configuration and an open configuration as previously described. Whilst no seal is provided between the lid 14 and the body 12, it will be appreciated that any of the sealing mechanisms described herein may be applied to the closure.
The body 12 of the closure 2 comprises a neck portion 76 coupled to a shoulder portion 80 at the second end of the body 18. The body 12 of the closure is configured for attachment to the container 4 via a snap-fit arrangement as will now be described.
The second end 18 of the body 12 has a pair of concentric circular walls 102 a, 102 b extending from the shoulder portion 80 of the body 12 and defining a channel 104 therebetween. The inner circular wall 102 a has a smaller diameter than the outer circular wall 102 b, thereby defining the channel 104 in between. The diameter of the container neck 6 is such that the channel 104 slots over and around the neck 6 when the closure 2 is attached to the container 4. In other words, the inner and outer walls 102 a,b are positioned either side of the container neck, such that the neck 6 occupies the channel 104 defined between the walls 102 a,b.
The outer face 30 of the container neck 6 includes a first circumferential catch 106 and the inner face of the outer circular wall 102 b includes a complementary second circumferential catch 108, wherein the first and second catches 106, 108 are configured for snap-fit engagement with each other when the closure 2 is attached to the container 4
The circumferential first catch 106 of the neck 6 comprises a sloped face 106 a configured to extend at an angle to the outer face 30 of the neck, and an abutment face 106 b configured to extend substantially orthogonal to the outer face 30 of the neck. Similarly, the second circumferential catch 108 of the outer circular wall 102 b comprises a sloped face 108 a configured to extend at an angle to the inner face of the wall 102 b, and an abutment face 108 b configured to extend substantially orthogonal to the inner face of the wall 102 b.
As the closure 2 is pushed onto the container 4, the rim 6 a of the container neck 6 enters the channel 104 defined by the circular walls 102 a,b. As the closure 2 is pushed further onto the container 4, the sloped wall 106 a of the first catch 106 engages the sloped wall 106 b of the second catch, such that the second catch 106 of the circular wall 102 b rides up and over the first catch 108 of the container neck. As the second catch 108 moves past the first catch 106 it snap-fits into position beneath the first catch 108 of the container, such that the abutment faces 106 b, 108 b are in contact with each other. In this way, the closure 2 is attached to the container 4.
It will be appreciated that a snap-fit attachment mechanism between the closure and container can apply to any embodiment described herein.
The closure illustrated in FIGS. 32 to 36 also comprise tamper evident features. The closure comprises a tamper evident strip 110 coupled to the body 12 and the lid 14 to prevent removal of the lid 14 from the body 12 when the tamper evident strip 110 is present. The tamper evident strip 110 comprises a band 112 arranged to encircle the container 10, overlapping a portion of the lid 14 and a portion of the body 12, for example overlapping the point at which the lower edge of the side wall 48 of the lid 14 meets the body 12.
As shown in FIG. 33, a circumferential projection 114 is provided on the body 12, e.g. between the shoulder portion 80 and the outer circular wall 102 b extending therefrom. The lower edge of the band 124 defines a lip 116 arranged to engage the projection 114 of the body 12 (i.e. to engage the side of the projection 114 facing away from the lid). When the tamper evident strip 112 is in place, the lip 116 of the band 112 engages the projection 114 of the body 12 and at least a portion of the band 112 e.g. an edge of the band, is fused to the lid 14 at a plurality of points around the circumference of the lid. In this way, removal of the lid 14 is prevented while the tamper evident strip 110 is in place since the lid 14 is attached to the band 112 and movement of the band 112 away from the body 12 is prevented by engagement of the lip 116 of the band 112 with the projection 114 of the body 12.
Further, attachment of the tamper evident strip 110 to the lid 14 in combination with the interlocking of the projection 114 with the lip 116 acts to prevent movement of the side wall of the lid 14 in a direction towards the central axis of the body 12. In this way, it is not possible to release the lid 14 from the body 12 by pressing the side wall 14 of the lid towards the central axis of the body, in the manner previously described.
The tamper evident strip 110 also comprises a pull tab 118 extending from the band 112. To remove the tamper evident strip 112, the pull-tab 118 is pulled away from the closure 2, thereby breaking the plurality of joins between the lid 14 and the band 112 (see FIG. 34). Once the tamper evident strip 110 has been removed from the closure 2, the lid 14 may be removed from the body 12 in the manner previously described.
FIGS. 37 to 43 illustrate a closure substantially the same as that shown in FIGS. 24 to 31, but configured for attachment with a container 4 via a snap-fit mechanism as described in relation to FIGS. 32 to 36. As can be seen in FIG. 42, a ring 118 projects from an internal surface of the lid (e.g. the internal cover surface 62) and is configured to sealingly engage against an internal surface 32 of the open mouth of the body 12, when the lid 14 is releasably secured to the body 12. Accordingly, the ring 118 has an outer surface 118 a contacts the inner surface 32 of the body 12, when the lid 14 is releasably secured to the body 12. The outer surface 118 a of the ring 118 has a slight incline towards the central axis of the body 12. Advantageously, this arrangement creates a bore seal between the mouth and the lid 14. To be specific, the ring 118 has an outer surface 118 a arranged to create a bore seal against the internal surface 32 of the open mouth.
In the embodiment of FIG. 42, the lid 14 is also configured to create an additional seal on the top of the rim 20 a of the body, by having a radial surface 120, extending from the external surface of the projecting ring 118, intended to abut against the upper surface of the rim 20 a of the body when the lid 14 is releasably secured on the body 12. Advantageously, the surface 120 serves to create a second seal point between the lid and the body.
Closures 2 described herein can be configured for sealing engagement between the lid 14 and body 12 and/or between the lid and container 4. In addition to the sealing mechanisms already described, the sealing mechanisms shown in FIGS. 44 to 60 can be used to seal between the lid and the body and/or between the lid and the container neck. The embodiments as shown in FIGS. 44-60 are illustrated in relation to sealing between a lid and the rim of a body, however, it will be readily understood that the sealing mechanisms described may also be adapted for sealing between the lid and the rim 6 a of the container neck.
FIG. 44 illustrates a similar seal arrangement between a lid and body of a closure 2 to that shown in FIG. 2a . The lid 14 includes an annular and resilient tongue 122, which defines a cantilever. The tongue 122 is configured so that an underside of the cantilever is in biased sealing contact with the upper surface of the rim 20 a of the body 12, when the lid 14 is releasably secured to the body 12. In exemplary embodiments, the tongue 122 has a normal state when the lid 14 is not engaged on the body, and an active state when the lid is releasably secured on the body 12. In the normal state, the tongue 122 extends naturally (e.g. in a direction orthogonal to the central axis of lid 14), but is upwardly deflected by the rim 20 a of the body, in the active state. This provides biased sealing engagement between the tongue 122 and the rim 20 a, in use.
In the specific embodiment of FIG. 44, the tongue 122 extends radially inwardly from the side wall of the lid 14. In exemplary embodiments, the tongue 122 is proximal but spaced from the internal cover surface 62. The tongue 122 has a thickness at its root, and the spacing between the tongue 122 and the internal cover surface 62 is no greater than three times said root thickness. Alternatively or additionally, the spacing between the tongue 122 and the internal cover surface 62 is no greater than the length of the tongue 122.
In exemplary embodiments, the internal surface 32 of the body defines an internal diameter for the open mouth 20. In exemplary embodiments, the tongue 122 terminates at a radial distance beyond the internal diameter of the open mouth. Advantageously, the tongue 122 provides a flexible top seal for the body 12, and is ideally suited to accommodate tolerances associated with the final location of the lid 14 relative to the body 12, when the lid 14 and body 12 are in snap-fitting engagement with one another.
In the embodiment shown in FIG. 45, the lid 14 includes a ring 124 (e.g. of resilient construction) depending down from an internal surface thereof (e.g. the internal cover surface 62 of the lid 14, or a point at the transition between the internal cover surface 62 and the lid side wall). The ring 124 is configured to be arranged in sealing contact with an upper surface of the rim 20 a of the open mouth on the body 12, when the lid 14 is releasably secured to the body 12. The ring 124 is continuous, and so a continuous top seal is provided on the rim 20 a of the open mouth. The ring 124 may be provided in the form of a deformable and resilient nipple, thereby allowing take up of tolerances associated with the closure mechanism of the closure 2. Similar to the preceding embodiment, the nipple will have a normal state when the lid 14 is not engaged on the body 12, and an active state when the lid 14 is releasably secured on the body 12. In the normal state, the nipple hangs freely, but is upwardly deflected by the rim 20 a, in the active state. This provides biased sealing engagement between the nipple and the rim 20 a, in use. The nipple may be over-moulded in TPE material or the like, to allow for additional flex.
As can be seen in FIG. 45, the ring 124 defines an internal diameter configured to be arranged substantially flush with the internal wall 32 of the open mouth, when the lid 14 is releasably secured to the body 12.
In those embodiments where both the first and second formations 26, 28 are continuous (e.g. proscribing a circle), the closure mechanism may be configured such that the first ramp surface 46 a of the lid is sealingly engaged with the second ramp surface 44 b of the body 12, when the lid 14 is releasably secured to the body 12, e.g. as shown in FIG. 46.
In the embodiment of FIG. 46, an alternative top seal is provided. The rim 20 a of the body 12 defines a point, for providing a point contact seal against a radially extending abutment surface 120 formed on the underside of the lid (e.g. at the transition between the side wall and internal cover surface 62 of the lid 14).
Put another way, the lid 14 for the closure 2 of FIG. 46 has an internal profile which defines a step between the side wall and internal cover surface 62, the step including a shoulder 120 configured to seat in sealing engagement with an upper surface of the rim 20 a of the body 12, when the lid 14 is releasably secured to the body 12. In exemplary embodiments, the shoulder 120 is configured to extend from the side wall 14 a of the lid no further than the internal diameter of the rim 20 a of the open mouth of the body (i.e. the shoulder does not extend across or into the open mouth).
FIG. 47 shows a closure similar to the preceding embodiments, but wherein the second ramp surface 44 b of the body 12 includes a circumferential groove, recess or other depression 126. The ridge 46 of the lid 14 is configured to lock into said groove, recess or other depression 126, when the lid 14 is releasably secured to the body 12. In exemplary embodiments, the closure mechanism is configured to create a circumferential point seal between the ridge 46 and the groove, recess or other depression 126 on the body 12.
The embodiment of FIG. 48 has a thin layer of wadding material 66 carried on an underside of the lid 14, wherein the wadding material extends across the open mouth of the body 12, when the lid 14 is releasably secured to the body 12. The wadding material 66 is arranged to be compressed by the rim 20 a of the open mouth, when the lid 14 is releasably secured to the body 12, in order to create a seal for the body 12. The wadding 66 may be configured to be compressed by both the rim 20 a of the open mouth of the body and the rim 6 a of the container neck 6, as described in relation to FIG. 2a . It will be appreciated that, whether the wadding 66 is configured to be compressed by the upper rim 20 a of the body and/or the rim 6 a of the container neck depends on the relative height to which the respective rims are configured to extend in the axial direction.
The wadding material 66 may serve as a carrier for a metallic foil (not shown) material, or other material, to be sealingly coupled with the rim 20 a of the open mouth, e.g. by induction welding. The wadding material 66 may be adhered to the lid (e.g. to the internal cover surface 62). Additionally or alternatively, the lid 14 may define a channel 64 intended to grip a periphery of the wadding 66, to hold it in place. As can be seen clearly in FIG. 48, the channel 64 is outboard of the rim 20 a of the open mouth, when the lid 14 is releasably secured on the body 12.
The embodiment of FIG. 49 is similar to the embodiment of FIG. 47, but in this embodiment, the lid 14 includes an internal circumferential groove 128 configured to receive the ridge 44 on the body 12, when the lid 14 is releasably secured to the body 12. More particularly, the closure mechanism is configured to bring about sealing engagement between an upper surface of said groove and a portion of the first ramp surface 44 a on the body 12, when the lid 14 is releasably secured to the body 12.
Turning now to FIG. 50, there is shown an embodiment similar to the previous embodiments described, in which the body 12 includes an annular and resilient tongue 130 configured for sealing engagement with an internal side wall of the lid 14, when the lid 14 is releasably secured to the body 12. The tongue is arranged between the first formation 26 and the rim 20 a at the open mouth of the body 12.
The closure 2 of the kind shown in FIG. 51 is configured so that a circumferential point seal is provided by interference between the ridge 44 on the body 12 and a portion of lid sidewall above the second projection 28, when the lid 14 is releasably secured to the body 12 (e.g. the seal is brought about as the lid 14 snaps onto the body 12). In embodiments of this kind, the second formation 28 defines a continuous ring projecting from the sidewall of the lid 14.
The embodiments shown FIGS. 47, 49, 50 and 51 are shown in combination with a resilient ring 124 projecting from an internal surface of the lid 14 (e.g. the internal cover surface 62 or the transition between the side wall and internal cover surface), and which is configured to be arranged in continuous sealing contact with an upper surface of the rim 20 a of the open mouth on the body 12, when the lid 14 is releasably secured to the body 12. The ring 124 has an internal diameter configured to be arranged flush with the internal wall 32 of the open mouth, when the lid is releasably secured to the body.
Closures of the kind shown in FIGS. 52 to 53 are similar to those previously described, but employ an O-ring 132 carried on an underside of the lid 14 (e.g. in or at a transition between the internal cover surface 62 and the side wall of the lid 14), in order to create a seal against an upper surface of the rim 20 a on the body 12. In FIG. 52, the O-ring 132 is of rectangular cross-section. In FIG. 53, the O-ring 132 is of circular cross-section. In FIG. 54, the O-ring 68 is of square cross-section. Other cross-sectional shapes are envisaged.
The O-ring 132 may be of any suitable material to deform and create a seal, as the lid 14 is snap-fittingly engaged on the body 12, e.g. an elastomeric, rubber or foam material.
In the illustrated embodiments, the O-ring 132 is located in a groove formed in the lid 14. The groove has an open end exposed in an axial direction of the body 12. The O-ring 132 does not protrude beyond the open end of the groove.
FIGS. 55 and 56 show further variants, similar to closures of the kind shown in FIG. 46. The embodiment of FIG. 55 includes a plurality of concentric rings 134 formed on the shoulder 120. These rings depend downwards from the lid 14, concentric with the central axis of the lid/mouth, and are configured to sealingly engage against the upper surface of the rim 20 a of the body 12, when the lid 14 is releasably secured on the body 12. The embodiment of FIG. 56 includes a plurality of concentric rings 134, 136 formed on the shoulder 120 and on the upper surface of the rim 20 a respectively and configured to form a seal on the shoulder 120 and on the upper surface of the rim 20 a of the body, respectively, wherein rings on the shoulder 120 are intended to engage a surface of the rim 20 a located between two rings on the rim, and vice versa.
For each of the embodiments in FIGS. 55 and 56, the size and quantity of the rings can be variable, dependent upon the size of the land on the rim.
FIGS. 57 and 60 show another embodiment of a closure wherein the lid 14 includes an annular and resilient tongue 138, which defines a cantilever depending from an internal surface of the lid 14. The tongue 138 is configured for sealing engagement with an upper surface of the rim 20 a of the open mouth of the body 12 when the lid 14 is releasably secured to the body 12. The tongue 138 is continuous and so a continuous top seal is provided on the rim 20 a of the open mouth.
The cover 14 b and the side wall 14 a of the lid are coupled via a transition portion 140, for example, a curved transition portion. The tongue 138 is arranged such that it depends from an internal surface of said transition portion 140 of the lid. In other words, a root of the tongue 140 is provided at the transition portion 140. The tongue 138 is configured to extend in a direction towards the central axis of the body, when the lid is secured to the body, such that an acute angle is formed between the side wall 14 a of the lid and the tongue 148. Similarly, an acute angle is also formed between the cover 14 b and the tongue 138.
In some embodiments, the tongue 138 is configured to extend from the transition portion 140 such that an angle of between 20 and 70° is formed between the tongue 138 and the cover 14 b a of the lid, for example, between, 30 and 60°, for example, between 40 and 50° from the cover 14 b. In some embodiments, the tongue 138 extends from the lid at an angle of 40 or 50° to the cover 14 b of the lid. In some embodiments, the tongue 138 extends from the lid at an angle of 40° or 50° to the side wall 14 a of the lid.
By positioning the root of the tongue 138 at the curved transition portion 140 rather than at the internal cover surface 62 and/or by angling the tongue 138 at an acute angle to the cover 14 b, an increased volume of space can be provided between the upper surface of the rim 20 a of the open mouth of the body 12 and the internal cover surface 62, when the lid 14 is releasably secured to the body 12. This may be useful, for example, to retain wadding.
As can be seen in particular from FIG. 57, the tongue 138 is provided with a first surface 138 a, facing the internal surface of the cover 62, and a second surface 138 b, facing the internal face 24 of the side wall of the lid 14. The first and second surfaces 138 a, 138 b are substantially parallel to each other. The free end of the tongue 138 is configured to abut the upper surface of the rim 20 a of the open mouth of the body 12, when the lid 14 is releasably secured to the body 12, thereby providing sealing engagement between the tongue 138 and the rim 20 a. In some embodiments (not illustrated) the free end of the tongue 138 is provided with a flat portion arranged to contact the upper surface of the rim 20 a of the body 12. This provides a greater area of contact between the tongue 138 and the rim 20 a and hence provides improved sealing.
In the embodiment shown in FIGS. 57 to 60, the first formation 26 of the body defines a ridge 44 between first and second ramp surfaces 44 a, 44 b. Similar to previous embodiments described herein, the first ramp surface 44 a terminates distal the ridge 44, at the open mouth of the body 12. The first ramp surface 44 a extends towards the interior of the body, such that the diameter of the body at the rim 20 a is less than the diameter of the body at the crest of the ridge 44. In this way the rim of the open mouth of the body is in alignment with the free end of the tongue 138 when the lid 14 is releasably secured to the body 12. The tongue 138 therefore abuts the rim 20 a of the open mouth of the body for sealing engagement between the lid 14 and the body 12.
Since the diameter of the body 12 at the rim 20 a is less than the diameter of the body at the ridge 44, a space 142 is provided between the lid 14 and the body 12, when the lid is secured to the body. Such a space may be occupied by the outer perimeter of a covering 144, for example a film or foil, provided across the open mouth of the body 12, as is shown in particular in FIG. 60 and which will be described further below.
In the exemplary embodiment shown in FIGS. 57 and 58, the rim 20 a of the open mouth of the body 12 has a sacrificial bead 146. This is provided at an upper surface of the rim at a point away from that at which the tongue 138 contacts the upper surface of the rim. For example, the bead 146 may be provided at an outermost edge of the upper surface, away from the central axis, and the tongue 138 may be arranged to contact an innermost edge of the upper surface, towards the central axis. The bead 146 is provided such that it does not interfere with the sealing action of the tongue 138 against the rim 20 a of the open mouth of the body 12, as can be seen in particular in FIG. 57.
In some instances, it may be desirable to cover the open mouth of the body 12 with a covering 144, e.g. a foil or film. This might be for reasons of hygiene. Such a covering 144 may be sealed to the open mouth of the body at the point of fill of the container. The covering 144 may then be removed to access the contents of the container. Subsequent sealing between the lid and the body may be provided by the sealing arrangements described herein, for example, by engagement of the resilient tongue 138 and the rim 20 a of the open mouth of the body.
The covering 144 is welded to the rim 20 a of the mouth of the body 12 (see FIGS. 59 and 60) e.g. by induction or conduction welding. When the covering 144 is welded to the rim 20 a of the mouth, the sacrificial bead 146 melts to weld the covering 144 in place. This can be seen in FIG. 59, for example.
The provision of the sacrificial bead 146 restricts the width of the weld area to that of the sacrificial bead 146, thereby leaving the region of the upper surface of the rim 20 a which is not provided with the sacrificial bead 146 (e.g., the edge of the surface nearest to the central axis) clean and free from weld. The tongue 138 is arranged to abut the upper surface at a point away from the sacrificial bead and so, when the covering 144 is removed, contacts a clean area of the rim 20 a, free from weld, to provide effective sealing. Alternatively, the sacrificial bead 146 may be provided at an innermost portion of the surface of the rim, and the tongue 138 arranged to abut an outermost portion of the surface of the rim 20 a.
When the lid 14 is releasably secured to the body 12, the edge of the covering 144 occupies the space 142 provided between the lid and the body and so does not impair the opening and closing of the closure.
It will be appreciated that the sealing arrangements configured to seal between the lid and the body of the closure described herein can also be applied to seal between the lid and the neck of the container.
It will be understood that multiple combinations of the sealing mechanisms described and illustrated herein are possible, e.g. to provide a top seal on the rim of the body and an additional seal between the side wall of the lid and a portion of an external wall on the body.
It will be understood that the features of the shaped lid e.g. to form tabs and/or voids, and/or the features of the shaped body side wall e.g. to form projections and recesses, are applicable to any of the embodiments described herein.
It will be understood that the hinge and/or tamper evident features may be applied to any of the embodiments described herein.
It will be understood that the features of the closure being attached to the container by a complementary screw thread arrangement, via resilient clips, and/or via a snap-fit mechanism may be applied to any of the embodiments described herein.
It will be appreciate that the closure of any of the embodiments 1 to 31 may be configured such that thread free portions of the body are is alignment with interruptions in the screw thread of the neck of the container, when the closure is attached to the container, as described in relation to, for example, the embodiment shown in FIGS. 1 to 5.
Although the embodiments described herein refer to the side wall 14 a of the lid 14 being arranged to extend from a cover 14 b of the lid 14, it will be appreciated that the cover 14 b need not be provided such that it is substantially perpendicular to the side wall 14 a.
Similarly, the cover 14 b is not limited to being substantially planar. In some embodiments the cover 14 b and side wall 14 a may comprise a curved outer profile, for example, such that they form a continuous curved outer surface. In some embodiments, the cover and/or side wall may comprise a substantially hemispherical outer profile.

Claims

1. A container having a closure mounted thereto, wherein the container comprises an opening defined by a neck, the neck having a central axis; wherein the closure comprises a lid and a body of plastics construction; wherein the body defines a conduit between a first end and a second end of the body, the first end defining an open mouth of the body; wherein the lid is movable between an open configuration and a closed configuration, the lid being arranged to cover said open mouth of the body when in the closed configuration; wherein the body comprises an external face and the lid includes an internal face intended to overlap at least a portion of said external face of the body when the lid is in the closed configuration; and wherein the body is attached to the container such that the open mouth of the body is in communication with the opening of the container, and the body and lid are configured to cooperate with one another to provide snap-fitting engagement therebetween in order to releasably secure the lid to the body in the closed configuration when the body is attached to the container.

2. A container according to claim 1, wherein the body of the closure comprises a side wall extending between the first and second ends, wherein the region of the side wall proximal the open mouth of the body is arranged to flex when the side wall is pressed in the direction of the central axis of the container, when the body is mounted onto the container.

3. A container according to claim 1, wherein the conduit defined by the body is arranged around the neck of the container such that the neck of the container extends through the conduit from the second end to a location proximal the first end such that a space is provided between a portion of the body proximal the open mouth of the body and the neck of the container, when the body is mounted onto the container.

4. A container according to claim 1, wherein the body comprises a side wall configured to extend between the first and second ends, and wherein the side wall of the body is attached to the neck of the container via attachment formations provided on the side wall.

5. A container according to claim 4, wherein the side wall of the body and the neck of the container comprise complementary attachment formations which are interengaged to attach the closure to the container.

6. A container according to claim 5, wherein the neck of the container comprises a screw thread, and the side wall of the body comprises a complementary screw thread, wherein the screw thread of the neck and the screw thread of the body are interengaged to attach the closure to the container.

7. A container according to claim 6, wherein the screw thread of the body projects from and extends around an internal surface of the side wall of the body, the screw thread is discontinuous thereby forming a plurality of discrete screw thread portions on the body with thread free regions therebetween.

8. A container according to claim 7, wherein the screw thread of the neck of the container projects from and extends around an external surface of the neck; wherein a depth is defined, orthogonal to the central axis of the container, between an outermost edge of the screw thread and the external surface of the container neck; the screw thread of the neck is configured to provide ridges and interruptions, wherein the defined depth varies between the ridges and the interruptions such that the ridges have a greater depth from the external surface of the neck than the interruptions; and wherein the thread free regions of the body overlap the interruptions of the container neck when the closure is attached to the container.

9. A container according to claim 7 or 8, wherein the extent to which the internal face of the lid overlaps the external face of the body varies around the lid to provide a first overlapping region and a second overlapping region, wherein the first overlapping region overlaps the external face of the body to a greater extent that the second overlapping region, wherein the first overlapping region defines a tab and wherein the closure is configured such that the thread free regions of the body align with the tab of the lid, when the lid is releasably secured to the body in the closed configuration.

10. A container according to claim 9, wherein the external face of the body defines at least one recess configured to receive the tab defined by the lid, when the lid is releasably secured to the body in the closed configuration.

11. A container according to claim 9, wherein the extent to which the internal face of the lid overlaps the external face of the body varies to define a pair of tabs, wherein the lid is coupled to the body via a hinge element provided equidistant from each of the tabs.

12. A container according to claim 1, wherein the closure comprises a tamper evident component coupled the body and/or the lid.

13. A container according to claim 12, wherein the extent to which the internal face of the lid overlaps the external face of the body varies to define a pair of tabs and a void therebetween, and wherein the tamper evident component comprises a strip arranged to occupy said void when the lid is releasably secured to the body.

14. A container according to claim 1, wherein said external face of the body defines a first formation extending in a direction radially away from the central axis of the neck, the internal face of the lid defines a second formation extending radially in the direction of the central axis, and wherein the second formation is configured for snap-fitting engagement over said first formation when the lid is applied to the body, in order to releasably secure the lid to the body in the closed configuration.

15. A container according to claim 1, wherein the closure is configured for sealing engagement with the opening of the container.

16. A container according to claim 15, wherein a wadding material is carried by the lid of the closure such that the wadding material extends across the opening of the container when the closure is attached to the container and the lid is in the closed configuration, wherein the wadding material is arranged to be compressed by a rim of the opening of the container, when the closure is attached to the container and the lid is in the closed configuration.

17. A container according to claim 16, wherein the wadding material serves as a carrier for a foil or film material to be sealingly coupled to the opening of the container.

18. A container according to claim 1, wherein the lid is configured for sealing engagement with the body.

19. A closure for use with the container of claim 1, the closure comprising a lid and a body of plastics construction; wherein the body defines a conduit between a first end and a second end of the body, wherein the first end defines an open mouth of the body, wherein the lid is movable between an open configuration and a closed configuration, the lid being arranged to cover said open mouth of the body when in the closed configuration; wherein the body comprises an external face and the lid includes an internal face intended to overlap at least a portion of said external face of the body when the lid is in the closed configuration; wherein the body is configured for attachment to a container to mount the closure onto the container, and the body and lid are configured to cooperate with one another to provide snap-fitting engagement therebetween in order to releasably secure the lid to the body in the closed configuration.

20. A container having a closure mounted thereto, wherein the container comprises an opening defined by a neck, the neck having a central axis; wherein the closure comprises a lid and a body of plastics construction; wherein the body defines a conduit between a first end and a second end of the body, the first end defining an open mouth of the body; wherein the lid is movable between an open configuration and a closed configuration, the lid being arranged to cover said open mouth of the body when in the closed configuration; and wherein the body is mounted onto the container by a complementary screw thread arrangement such that the open mouth of the body is in communication with the opening of the container, and the body and lid are configured to cooperate with one another to provide engagement therebetween in order to releasably secure the lid to the body in the closed configuration, when the body is attached to the container.