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WO2013006927A1 - Contenant pourvu d'une fermeture ayant une membrane interne et procédé de fabrication correspondant - Google Patents

Contenant pourvu d'une fermeture ayant une membrane interne et procédé de fabrication correspondant Download PDF

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Publication number
WO2013006927A1
WO2013006927A1 PCT/BE2012/000038 BE2012000038W WO2013006927A1 WO 2013006927 A1 WO2013006927 A1 WO 2013006927A1 BE 2012000038 W BE2012000038 W BE 2012000038W WO 2013006927 A1 WO2013006927 A1 WO 2013006927A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
closure
closure system
opening
vacuum
Prior art date
Application number
PCT/BE2012/000038
Other languages
English (en)
Inventor
Dirk De Cuyper
William Dierickx
Original Assignee
Resilux
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Resilux filed Critical Resilux
Priority to EP12761877.5A priority Critical patent/EP2731890A1/fr
Publication of WO2013006927A1 publication Critical patent/WO2013006927A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D79/00—Kinds or details of packages, not otherwise provided for
    • B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
    • B65D79/0087—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a closure, e.g. in caps or lids

Definitions

  • the present invention relates to a container, in particular to a hot-fill container with closure element, especially of the cap type, provided with an internal membrane.
  • Hot-fill is an old technique, wherein the material to be bottled, such as fruit juice, is heated to 85°C and is then filled, especially into old-style traditional glass bottles.
  • bottling can be carried out at up to 90°C, whereupon all micro-organisms are killed whilst the vitamins are retained.
  • hot-fill is still widely used and, indeed, is coming increasingly back into fashion.
  • the advantage of hot-fill is, after all, that the bottle does not have to be made aseptic, which is an expensive process.
  • the product is heated to 85°, though, where appropriate, it is already at 75° sufficient to make the PET container aseptic. At these temperatures, most microorganisms are generally dead, already at 65°-70°. Since vitamins die only at 105°C, the vitamins, however, are retained. All of this can take place in an open space where no germ-free area is necessary. It is consequently very simple.
  • the vacuum formed in the container can be absorbed by means of so-called panels, which are fitted round about the container in the side wall and/or the base hereof, with a depressionnary effect which proceeds to compensate the pressure drop in the container.
  • panels exist in locally deformable surface parts, in particular elastic, which are formed by, for example, notches provided in the container, and which are flexible.
  • the forces which are generated by the vacuum in the fill product space after hot-fill act upon these flexible parts, which, because of their flexibility, proceed to deform and hereupon virtually proportionately and uniformly contract and go inwards.
  • the other, non flexible parts of the container do not proceed to deform and thus keep the container uncreased from the aesthetic aspect, but also maintain its functionality by virtue of the container being kept upright.
  • the panels thus ensure that the shrinkage can be contained in the container.
  • Such panel elements or mechanisms are very effective for maintaining a balanced pressure by preventing the build-up of pressure differences and thereby maintaining the structural geometry of the container by preventing undesirable deformation hereof.
  • Such panels are difficult to mould, however, and also have the further drawback that the labelling of the container is made difficult by the presence of a network of ribs and grooves on the surface of the container, which, as a result of its existence, appreciably limits the available surface on the container wall, which also presents a major obstacle with respect to the scope of design for the container.
  • a base which can be pressed in if pressure is applied thereto.
  • the vacuum makes the container so hard that the base, as it were, goes inwards.
  • This base is thus impressionable and relatively displaceable with respect to the wall of the container.
  • a base is made, which base is very strong for the stability of the walls. If pressure is applied to it, then it can be pressed in.
  • the deformation of the container is a consequence of the pressure difference between the atmospheric pressure which acts from outside upon the container walls as a result of the cooling-induced vacuum in the inside thereof.
  • a vacuum or underpressure can be generated, after all, in the region contained between the bottling level and the closure.
  • This tendency of the container to proceed to deform under the influence of the cooling of the warm-bottled fill material can certainly be countered by a greater wall thickness of the plastics container.
  • Document CH699800A1 describes an analogous system, though there is also a vent opening seated in the top side of the cap.
  • a vent opening seated in the top side of the cap.
  • the presence of concentric rings is required, which imposes requirements in terms of fits and tolerances and the like.
  • This also describes in essence a deformable section, which is at the level of the cover surface of the container. Consequently the top surface of the closure element is herewith deformable, wherein this, moreover, is bonded to the container wall at the level of the pouring opening or mouth. It is also in this deformable section that a vent opening is made. Precisely owing to the fact that this section is deformable, this consequently does not absolutely ensure the good working of the opening in view of the fact that this opening must be kept small, especially where the container is intended to receive dairy products or fresh fruit juice herein.
  • This document further describes a closure element not only with small opening diameter, but also with larger opening diameters, virtually without discrimination.
  • the herein quoted larger orders of magnitude harbour a risk that, as a result of a possibly over-large diameter or section, this can affect the content of the container, especially where it is a matter of dairy products, or else fresh fruit juice and other fresh products which ideally have as limited a contact as possible with or are as little exposed as possible to the outside air.
  • This virtually arbitrarily presented choice between smaller and larger opening diameters is also the reason for stipulating that they do not destroy the required rigidity of the deformable section in which the opening is made.
  • the object of this invention consists in eliminating the above-described drawbacks of the prior art and in providing a container with closure element with which a satisfactory solution to the aforementioned problems in terms of vacuum build-up is provided, especially in hot-fill bottling. It is herewith endeavoured, on the one hand, to provide a closure element for a plastics container which can be easily produced and at reasonable cost, which closure element at the same time also effects a satisfactory compensation of the pressure differences resulting from warm bottling, and, on the other hand, to counter vacuum which is generated after cooling of the warm-bottled containers. In this context, it is also the intention to ensure the required sealing of the closure element, and visible signs of the aforementioned vacuum formation, such as the inadmissible deformation of the container hereby, must also be eliminated.
  • the sealable lid-screw cap can assume various forms, but all are provided with an air hole in the external surface hereof.
  • the membranes deform through the action of the vacuum forces and revert after the opening of the packaging back into their original state or not, according to their elastic or dynamic deformability.
  • a membrane which is produced from a flexible material, preferably having a high barrier characteristic, more preferably also having a memory, is provided.
  • the forces generated in the fill product chamber after hot-fill suck the membrane downwards into a deformed state.
  • this small hole is provided in the sealable lid-screw cap.
  • the said opening has, by contrast, a diameter which is as small as possible, to be precise such that this is just sufficient to be in limited contact with the outside of the container - normally at atmospheric pressure -, in order herewith to be able to make the necessary contribution to the prevention of the aforementioned pressure build-up with compensation hereof, without however forming an inadmissible entry port for the penetration of external air in order hereby as far as possible to prevent possible oxidation of the content.
  • the opening is dimensioned such that it acts as a virtually unidirectional valve, which triggers degassing of the fill product in the inside and which only makes a flow possible under pressure -e.g. induced by the aforementioned vacuum formation- and not without the presence of a stimulating pressure which creates this flow.
  • a mere atmospheric pressure is thus not sufficient to be able to produce such a flow in such a micro-opening.
  • the container has a cylindrical section, particularly being virtually smooth, and/or having more particularly graphic markings on its shell surface, in particular an identification means such as a brand name, logo, and the like of the contained fill product, which is virtually only possible thanks to the absence of panels in the shell surface which is made possible owing to this invention.
  • the membrane is a separate injection moulding part made of a flexible material such as PP, PE or TPE having a very thin wall thickness, where appropriate provided with panel systems or hinged surface parts in the material of the container at localized sites thereof, in order to enable the expansion/contraction oscillation.
  • a membrane can deform under the action of the vacuum forces, into a deflected position with respect to the rest state.
  • the membrane consists of an inner ring, also as a seal between bottle and sealable lid-screw cap and a plunger. After the hot-fill operation, the inner ring and the plunger are mounted in the represented state, but under action from the vacuum forces after hot-fill, the plunger moves downwards into the working position.
  • the membrane consists of a flexible material with PP, PE, TPE which is formed by thermoforming of a foil, wherein the cup can deform through the action of the vacuum forces.
  • the plastics container is a jar, more specifically having an opening of at least 50 mm.
  • Figures 1 to 4 each represent an embodiment of a sealed container according to the invention with variants, viewed in perspective view, according to a general representation.
  • Figures 5 to 8 represent the embodiments represented in the previous figures, yet viewed in respective side views, on a reduced scale.
  • Figures 9 to 12 represent the embodiments represented in the previous figures, yet viewed in cross section along the line A-A, on a reduced scale.
  • Figures 13 to 16 represent the embodiments represented in previous figures 1 to 4, yet viewed in cross section along the line A-A, according to a detailed view hereof in enlarged section of the respective top parts.
  • Fig. 17 is a detailed representation of the sectional representation represented in Fig. 14, in an enlarged view of a first embodiment of a closure element fastened to the container according to Fig. 3.
  • Fig. 18 is a detailed representation of the sectional representation represented in Fig. 14 in an enlarged view of a first embodiment of a closure element fastened to the container according to Fig. 4.
  • Fig. 19 is a detailed representation of the sectional representation represented by Fig. 15 in an enlarged view of a first embodiment of a closure element fastened to the container according to Fig. 2.
  • Fig. 20 is a detailed representation of the sectional representation represented in the previous Fig. 16 in an enlarged view of a first embodiment of a closure element fastened to the container according to Fig. 1.
  • the present invention relates to containers which are sealed by means of a detachable closure element provided with at least 1 opening of small dimension.
  • a vacuum delimiter in particular a membrane, advantageously elastic, which is fitted in the inside of the closure element in such a way that the aforementioned opening is and remains isolated from the inside of the container.
  • This deformable membrane acts as a vacuum delimiter of the inside of the container from the aforementioned opening, wherein the aforementioned membrane is elastically deformable between a rest state and an operating state et al.
  • Figs.1 to 12 show a standardly constructed bottle, that is without panels herein, neither in the walls hereof, nor in the base.
  • a panel system is, however, provided in the sealable lid-screw cap.
  • This sealable lid-screw cap can assume different forms 2, 6, 8, 11 , whilst they are respectively provided with an air hole 3.
  • the inlays or membranes deform through the action of the vacuum forces and, after the packaging has been opened, revert to their original state, depending on their deformability, elastic or plastic.
  • An inlay 4 is produced from a flexible material, particularly advantageously with a high barrier characteristic and with a memory.
  • the forces generated in a fill product chamber 5 after hot-fill suck the inlay downwards into a state 4'.
  • a small hole 3 should be provided in the sealable lid-screw cap.
  • a construction variant of the inlay 7 consists of a separate injection moulding part made of a flexible material such as, for example, PP, PE, TP having a very thin wall thickness. These can be provided with panel systems or hinges in order to be able to effect the expansion/contraction as a pressure difference compensating element.
  • the membrane 7 can deform, under the action of the vacuum forces, into position 7'.
  • a further construction variant of the inlay according to Fig. consists of an inner ring 9, also acting as a seal between the bottle 1 and the sealable lid-screw cap 8, and a plunger 10. Following hot-fill, 9 and 10 are mounted in the illustrated state, but when acted upon by the vacuum forces after the hot-fill, the plunger 10 moves downwards into position 10'.
  • An inlay according to 12 consists of a flexible material, such as, for example, PP, PE, TPE, which is formed by, for example, thermoforming of a foil, wherein, through the action of the vacuum forces, the cup can deform into 12'.
  • a flexible material such as, for example, PP, PE, TPE, which is formed by, for example, thermoforming of a foil, wherein, through the action of the vacuum forces, the cup can deform into 12'.
  • the deformable section is formed by the flexible membrane which is disposed between the aforementioned top surface of the closure element and the inside of the container, more specifically the fill level herein, as represented in the figures.
  • the flexible foil is connected at its margin to the inner edge of the neck of the container, in particular welded hereto.
  • Membrane-inlay embodiment 1 Membrane-inlay embodiment 1 when chamber
  • Membrane-inlay embodiment 4 Membrane-inlay embodiment 4 when chamber

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

L'invention concerne un système de fermeture de contenant particulièrement adapté au remplissage à chaud ou conditionnement à chaud, et pouvant être fermé au moyen d'une fermeture provisoire (2, 6, 8, 11) laquelle présente sur sa partie haute une surface supérieure. Le système selon l'invention se caractérise en ce que la fermeture (2, 6, 8, 11) est pourvue d'une ouverture ménagée sous la forme d'un moyen de compensation de la pression (3) de petites dimensions, disposée à l'extérieur et servant de passage entre l'extérieur du contenant et l'intérieur du contenant. Le système comprend également un limiteur sous vide interne qui est ménagé à l'intérieur de la fermeture de sorte que le moyen de compensation de la pression (3) est séparé de l'intérieur du contenant, et il agit en tant que limiteur sous vide pour l'intérieur du contenant par rapport à l'ouverture (3). L'invention concerne également un procédé correspondant.
PCT/BE2012/000038 2011-07-08 2012-07-09 Contenant pourvu d'une fermeture ayant une membrane interne et procédé de fabrication correspondant WO2013006927A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12761877.5A EP2731890A1 (fr) 2011-07-08 2012-07-09 Contenant pourvu d'une fermeture ayant une membrane interne et procédé de fabrication correspondant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2011/0429A BE1022366B1 (nl) 2011-07-08 2011-07-08 Behouder met afsluiter voorzien van een inwendig membraan en werkwijze voor het vervaardigen hiervan
BE2011/0429 2011-07-08

Publications (1)

Publication Number Publication Date
WO2013006927A1 true WO2013006927A1 (fr) 2013-01-17

Family

ID=46888275

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BE2012/000038 WO2013006927A1 (fr) 2011-07-08 2012-07-09 Contenant pourvu d'une fermeture ayant une membrane interne et procédé de fabrication correspondant

Country Status (3)

Country Link
EP (1) EP2731890A1 (fr)
BE (1) BE1022366B1 (fr)
WO (1) WO2013006927A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014135552A1 (fr) * 2013-03-06 2014-09-12 Nestec S.A. Récipient pour contenu aseptique
WO2020251873A1 (fr) * 2019-06-10 2020-12-17 Amcor Rigid Packaging Usa, Llc Fermeture de récipient à membrane souple

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002070394A1 (fr) * 2001-03-08 2002-09-12 Alcoa Deutschland Gmbh Verpackungswerke Procédé et dispositif pour fermer des contenants
US20080083693A1 (en) 2006-10-05 2008-04-10 Gottlieb Norman J Pressure equalization cap and bottle for use therewith
US20090179032A1 (en) 2008-01-11 2009-07-16 Ball Corporation Method and Apparatus for Providing A Positive Pressure in the Headspace of a Plastic Container
CH699800A1 (de) 2008-10-29 2010-04-30 Alpla Werke Verschluss für Kunststoffbehälter, insbesondere Kunststoffflaschen.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002070394A1 (fr) * 2001-03-08 2002-09-12 Alcoa Deutschland Gmbh Verpackungswerke Procédé et dispositif pour fermer des contenants
US20080083693A1 (en) 2006-10-05 2008-04-10 Gottlieb Norman J Pressure equalization cap and bottle for use therewith
US20090179032A1 (en) 2008-01-11 2009-07-16 Ball Corporation Method and Apparatus for Providing A Positive Pressure in the Headspace of a Plastic Container
CH699800A1 (de) 2008-10-29 2010-04-30 Alpla Werke Verschluss für Kunststoffbehälter, insbesondere Kunststoffflaschen.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014135552A1 (fr) * 2013-03-06 2014-09-12 Nestec S.A. Récipient pour contenu aseptique
CN105008241A (zh) * 2013-03-06 2015-10-28 雀巢产品技术援助有限公司 用于无菌内含物的容器
EP2964542B1 (fr) 2013-03-06 2017-09-06 Nestec S.A. Récipient pour contenu aseptique, utilisation et méthode de fabrication
CN105008241B (zh) * 2013-03-06 2018-02-06 雀巢产品技术援助有限公司 用于无菌内含物的容器
US9981795B2 (en) 2013-03-06 2018-05-29 Nestec S.A. Container for aseptic content
WO2020251873A1 (fr) * 2019-06-10 2020-12-17 Amcor Rigid Packaging Usa, Llc Fermeture de récipient à membrane souple

Also Published As

Publication number Publication date
BE1022366B1 (nl) 2016-03-17
EP2731890A1 (fr) 2014-05-21

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