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WO1995022494A1 - Ensemble monobloc support et bouchon a indicateur d'effraction - Google Patents

Ensemble monobloc support et bouchon a indicateur d'effraction Download PDF

Info

Publication number
WO1995022494A1
WO1995022494A1 PCT/US1994/001793 US9401793W WO9522494A1 WO 1995022494 A1 WO1995022494 A1 WO 1995022494A1 US 9401793 W US9401793 W US 9401793W WO 9522494 A1 WO9522494 A1 WO 9522494A1
Authority
WO
WIPO (PCT)
Prior art keywords
fitment
cap
skirt
intermediate product
spout
Prior art date
Application number
PCT/US1994/001793
Other languages
English (en)
Inventor
Brian M. Adams
Daniel Luch
Rawson L. Chenault
Original Assignee
Portola Packaging, Inc.
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 Portola Packaging, Inc. filed Critical Portola Packaging, Inc.
Priority to PCT/US1994/001793 priority Critical patent/WO1995022494A1/fr
Priority to AU66961/94A priority patent/AU6696194A/en
Priority to GB9617293A priority patent/GB2301098B/en
Publication of WO1995022494A1 publication Critical patent/WO1995022494A1/fr

Links

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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5877—Non-integral spouts connected to a planar surface of the package wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • 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
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/08—Threaded or like closure members secured by rotation; Bushes therefor
    • 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • 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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D55/024—Closures in which a part has to be ruptured to gain access to the contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • B29C2045/0065—Joining parts moulded in separate cavities the parts being interconnected before assembling by a breaking or shearing point

Definitions

  • This invention relates to a new and improved spout fitment and a plug type cap for closing same. More particularly, the invention relates to a fitment which fits around a hole in a panel of a paperboard carton or around a hole in a flexible container such as used for packaging liquid products and powders and to a closure for such fitment. The invention is further characterized in that it is tamper evident. More particularly, the invention relates to a unitary fitment and closure molded in a single mold wherein the cap and the fitment are molded axially spaced apart.
  • An elongated tear tab (which is one of the elements of the tamper-evident feature of the assembly) extends from the fitment up to the cap and functions during the molding process as a "runner."
  • plastic material flows into the portion of the mold which forms the cap, thence down the tear tab runner and finally into the portion of the mold which forms the fitment.
  • the cap may be assembled with the fitment as part of the molding process in that as the core of the mold retracts, the cap is drawn along with the core and assembles the two components together. The cap is then stripped from the core since the cap can move no further.
  • the invention is applicable to aseptic packaging wherein a separate piece of foil or plastic material is welded to the inner wall of the container and likewise to the underside of the flange of the fitment and to the underside of the bottom edge of the cap. If the container is then filled with a sterile product, the sterility will be preserved until the cap is removed from the spout by the consumer. 2. Description of the Related Art Generally speaking, prior fitments have spouts formed with external threads closed by caps with internal threads. Some fitments are used in conjunction with plastic bag containers, the fitment being integrally welded to the plastic bag.
  • Prior art fitments are attached to a polymer- coated paperboard container, such as a gable-top, half-gallon container which, optionally, may be lined with foil or plastic.
  • a polymer- coated paperboard container such as a gable-top, half-gallon container which, optionally, may be lined with foil or plastic.
  • Prior art fitments for paperboard cartons usually include a thin flange which is welded to the polymer-coated paperboard surface of the container. It will be understood that instead of a screw thread attachment of the cap to the spout of the fitment, a snap-on, snap-off attachment may be used. Such an attachment has been previously used in the fitment art.
  • Aseptic packaging has been used in the metal container and glass container industries.
  • the container and closure are made sterile and the container is filled with a sterile product under sterile conditions.
  • the present invention enables this principle to be used with paperboard cartons or other barrier containers.
  • Fitments of the prior art have a number of deficiencies as compared to the present invention. In the first place, they employ multiple components, which increase the cost of the combination very greatly over the simple structure of the present invention. Secondly, the assembly is difficult and often involves rotary equipment which is difficult to control in practice and is expensive to install.
  • barrier layers such as shown in U.S. Patent No.4,813,578.
  • barrier layers are, however, usually part of the laminate of which the container panel is formed. Portions of the plug or cap are secured to the barrier so that when the plug is removed, the barrier is fractured, providing access to the interior of the container.
  • the use of the laminate as the barrier involves manufacturing difficulties which do not occur in accordance with the present invention.
  • a fitment having a spout into which the skirt of the cap fits is provided. Either the spout and cap skirt are formed with mating threads or the telescoping surfaces are so formed that they are liquid tight when assembled.
  • a feature of the present invention is that the cap and fitment are molded in a single cavity, and the portion of the cavity which forms the cap is spaced from the portion which molds the fitment. The two portions are interconnected by a runner which ultimately comprises an elongated tear tab for the tamper-evident features of the assembly of cap and spout. The tab may be made long enough to be conveniently gripped by the consumer by reason of the fact that the two mold cavity portions are spaced apart.
  • the core which forms the interior of the cap as it moves downward relative to the spout, pulls the cap with it and assembles the cap and spout together by the time the molding operation is completed.
  • the interior of the cap may be formed with an internal ring which seats in a groove in the mold core and prevents dislodgment of the core from the cap until the completion of the assembly operation.
  • connection between the runner (tear tab) and the cap is frangible and ruptures through a sub-gating design.
  • the tear tab slides relative to the cap.
  • locking lugs on the tab slip through a hole in a flange extension of the cap to lock the system together in a tamper-evident manner.
  • the fitment is then inserted through the hole in the container, and the flange of the fitment is welded to the container.
  • a foil disk of greater diameter than the flange of the fitment is attached to the underside of the flange by welding, and the foil is also welded to the bottom edge of the plug which fits into the spout of the fitment.
  • the assembled fitment and plug are inserted through the opening in the container panel from the underside of the container and the foil is welded to the underside of the container panel in liquid-tight fashion.
  • This construction is useful in aseptic packaging, since the sealing of the foil to the container panel around the opening in the container prevents contamination of the interior of the container after filling.
  • mating seals are provided which inter- engage when the cap is seated in the fitment preventing leakage.
  • Fig. 1 is a side elevational view of the cap and fitment at the stage of the molding operation where molding is completed but prior to retraction of the mold core.
  • Fig. 2 is a top plan view of the structure of Fig. 1.
  • Fig. 3 is a sectional view taken substantially along the line 3 — 3 of Fig. 2.
  • Fig. 4 is a side elevational view of the cap and spout assembled together and installed on a container, the view being partially broken away in section to reveal internal construction.
  • Fig. 5 is a view similar to Fig. 1 of a modification.
  • Fig. 6 is a top plan view of the structure of Fig. 5.
  • Fig. 7 is a vertical sectional view taken substantially along the line 7 — 7 of Fig. 6.
  • Fig. 8 is an enlarged vertical, sectional view of the assembled structure of Fig. 7 applied to a container panel and also showing an aseptic foil attached thereto.
  • cap 12 comprises a top 16 from the periphery of which depends skirt 17.
  • the exterior of the upper half of skirt 17 is formed with external vertical ribs 18 which assist the user in unscrewing the cap after assembly.
  • An outward extending flange 19 is formed at the lower ends of the ribs 18 having a shoulder 21 on its underside.
  • a seat 22 which comprises an enlargement on the exterior of skirt 17.
  • External threads 23 are formed on the portion of skirt 17 below the seat 22.
  • Cap 12 terminates in a lower, bottom edge 24; and one of the features of the present invention is the fact that the external surface 39 of the skirt above bottom edge 24 is smooth so that it may seal against the fitment 11 in assembled position.
  • internal bead 26 is formed on skirt 17 just above the level of flange 19.
  • the bead 26 is formed by a groove in the core (not shown) of the mold. The function of the bead 26 is the insure that the cap 12 retracts with the core just prior to the completion of the molding operation.
  • space 27 between ribs 18 which is a flat surface on the top of flange 19 formed with an aperture 28.
  • the underside of space 27 is formed with a bevel 29 below aperture 28.
  • the fitment portion 11 comprises an annular flange 31 having an upward offset 32 at its inner edge merging into an annular rim 33 parallel to flange 31. Extending up from the inner edge of rim 33 is spout 34 which has an upper edge 36 with a peripheral flange 35 dimensioned to fit against the shoulder 21 in the assembled position shown in Fig. 4.
  • the seat 22 of cap 12 fits immediately inside the upper edge of the spout 34.
  • Internal threads 37 are formed on the interior of spout 34 shaped to mesh with the threads 23.
  • the materials of which the fitment 11 and cap 12 are molded are sufficiently flexible so that when the cap 12 is pulled down relative to the fitment 11, the threads 23 and 37 slip past each other and then interengage.
  • a seal ring 38 slants downward-inward to engage the smooth surface 39 on the exterior of skirt 17 below threads 23.
  • the primary seal of the fitment and cap is preferably the seal of surface 38 with smooth surface 39.
  • a flange 35 Projecting outward at the upper end of spout 34 immediately below edge 36 is a flange 35 and extending vertically upwardly in alignment with aperture 28 is tear tab 42 which, as heretofore explained, functions as a runner to deliver molten plastic from the cap to the fitment during the molding process.
  • a notch 43 is made in the outer, lower corner of the juncture of flange 35 and tab 42 so that the tab 42 may be torn off. So long as the tab 42 is connected to fitment 11, however, the assembly shown in Fig.4 is tamper evident.
  • tangs 44 Extending outwardly and inwardly of tab 42 above upper edge 36, at distance slightly greater than the thickness of space 27, are tangs 44. When the two parts are drawn together as shown in Fig. 4, tangs 44 slip through the aperture 28 and lock above the space 27 preventing the parts from being disassembled so long as the tab 42 is attached to the fitment 11.
  • the assembly of fitment 11 and cap 12 may be installed on a panel of container 51 having a hole 52 dimensioned therein which is approximately equal to the outside diameter of offset 32.
  • the assembly of fitment and cap is inserted through hole 52 from below panel 51 as viewed in Fig. 4.
  • Projections 47 on offset 32 engage the top surface of container 51 to hold fitment 11 in place.
  • the flange 31 is welded or otherwise permanently secured to the polymer surface of container panel 51.
  • the user pulls the tab 42, fracturing the connection at the notch 43 and then unscrews cap 12.
  • plastic fills the portion of the cavity forming the cap 12 and runs down the tear tab 42 which acts as a runner.
  • the molten plastic then fills the lower portion of the cavity which forms the fitment 11.
  • core not shown
  • the internal bead 26 fills a circumferential groove in such core. As the molding operation terminates, the core retracts and because the bead 26 fits into the groove in the core, the cap 12 is pulled downward toward the fitment 11.
  • Skirt 17a of cap 12a has an external retention bead 61 formed thereon while the interior of spout 34a has an internal retention bead 62 formed therein.
  • the beads 61 and 62 fit tightly against each other.
  • Top 16a is formed with a peripheral flange 56 which seats upon a peripheral flange 35a on the top edge 36a of fitment 11a.
  • tab 57 projects outwardly and is formed with an aperture 58 shaped to receive tear tab 42a.
  • the tab 57 has an additional use: It may be used to remove the cap 16a from the fitment spout 34a when it is necessary to dispense the contents of the container.
  • Fig. 8 shows a further modification of the invention.
  • the container is further sealed with a foil 66.
  • Aseptic or hermetic packaging can be achieved in this way.
  • the disk of foil 66 is larger than the exterior of flange 31a.
  • This foil 66 may be of a metal or plastic composition. Adjacent the outer edge of foil 66, it is attached, for example by means of weld 67 to the underside of the container wall 51a and is also welded to the underside of flange 31a and preferably to the bottom edge of skirt 17a.
  • weld 67 Adjacent the outer edge of foil 66, it is attached, for example by means of weld 67 to the underside of the container wall 51a and is also welded to the underside of flange 31a and preferably to the bottom edge of skirt 17a.
  • the disk 66 keeps the container sterile during transportation and storage.
  • the weld 69 is preferably sufficiently secure so that the foil which would otherwise block the aperture is removed along with the cap. Teeth or sharp serrations 90 may be incorporated to assist rupture of the foil so that the removal force is not excessive.
  • attachment means other than welds i.e. adhesives or mechanical attachment
  • Fig. 8 shows the aseptic foil 66 applied to the structure of Figs. 5-7. However, it will be understood that the same principle may be used in connection with a modification of Figs. 1-4.

Landscapes

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

Abstract

Un support thermoplastique (11) à indicateur comportant un goulot (34) et un bouchon (12) destiné audit goulot, sont soudés à un récipient plastique ou revêtu de plastique. Le support et le bouchon sont moulés simultanément, avec entre eux un écartement substantiel, une glissière de forme allongée (42) les reliant. Après rétraction du noyau de moulage, le bouchon est enfoncé dans le goulot jusqu'à obtenir le contact réciproque des épaulements des deux pièces, à la suite de quoi le bouchon est détaché du noyau de moulage. La glissière se compose d'une patte d'arrachage coulissant au travers d'un espace ajouré (27) du bouchon. Lorsque les pièces s'enclenchent réciproquement, des tenons (44) appartenant à la patte d'arrachage s'introduisent dans l'espace (27), donnant ainsi à l'ensemble sa caractéristique d'indication d'effraction. Le support comporte un bord (31) qui peut être soudé ou fixé au récipient d'une autre façon. Pour ouvrir le récipient, le consommateur doit tirer sur la patte, puis dévisser ou dégager le bouchon du goulot.
PCT/US1994/001793 1994-02-17 1994-02-17 Ensemble monobloc support et bouchon a indicateur d'effraction WO1995022494A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/US1994/001793 WO1995022494A1 (fr) 1994-02-17 1994-02-17 Ensemble monobloc support et bouchon a indicateur d'effraction
AU66961/94A AU6696194A (en) 1994-02-17 1994-02-17 Unitary tamper-evident fitment and closure assembly
GB9617293A GB2301098B (en) 1994-02-17 1994-02-17 Unitary tamper-evident fitment and closure assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1994/001793 WO1995022494A1 (fr) 1994-02-17 1994-02-17 Ensemble monobloc support et bouchon a indicateur d'effraction

Publications (1)

Publication Number Publication Date
WO1995022494A1 true WO1995022494A1 (fr) 1995-08-24

Family

ID=22242288

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/001793 WO1995022494A1 (fr) 1994-02-17 1994-02-17 Ensemble monobloc support et bouchon a indicateur d'effraction

Country Status (3)

Country Link
AU (1) AU6696194A (fr)
GB (1) GB2301098B (fr)
WO (1) WO1995022494A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1019138C2 (nl) * 2001-10-08 2003-04-09 Itsac Nv Samenstel voor een afsluitbare fluïdumverbinding.
US8276777B2 (en) 2008-10-03 2012-10-02 Chuck Shieh Closure with tamper evident strip for container
EP3048064A1 (fr) * 2015-01-21 2016-07-27 Liqui-Box Corporation Ensemble d'éléments de perçage pour récipient souple
US11059633B2 (en) 2019-10-31 2021-07-13 Cheer Pack North America Flip-top closure for container

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1812228T3 (da) 2004-11-12 2012-05-07 Elopak Systems Forbedringer af eller vedrørende hældetud-indretninger

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4813578A (en) * 1988-03-11 1989-03-21 International Paper Company Self opening pour spout and screw cap
US5012941A (en) * 1990-01-12 1991-05-07 Robert S. Abrams Tamper-proof container and cap assembly
US5108029A (en) * 1990-02-16 1992-04-28 Capitol Spouts, Inc. Reclosable attachment for containers
US5174465A (en) * 1991-03-05 1992-12-29 Cap Snap Co. One-piece fitment and cap with tamper-evident band
US5176300A (en) * 1989-12-28 1993-01-05 Toppan Printing Co., Ltd. Pouring plug for liquid paper-containers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4813578A (en) * 1988-03-11 1989-03-21 International Paper Company Self opening pour spout and screw cap
US5176300A (en) * 1989-12-28 1993-01-05 Toppan Printing Co., Ltd. Pouring plug for liquid paper-containers
US5012941A (en) * 1990-01-12 1991-05-07 Robert S. Abrams Tamper-proof container and cap assembly
US5108029A (en) * 1990-02-16 1992-04-28 Capitol Spouts, Inc. Reclosable attachment for containers
US5174465A (en) * 1991-03-05 1992-12-29 Cap Snap Co. One-piece fitment and cap with tamper-evident band

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1019138C2 (nl) * 2001-10-08 2003-04-09 Itsac Nv Samenstel voor een afsluitbare fluïdumverbinding.
WO2003031161A1 (fr) * 2001-10-08 2003-04-17 Itsac N.V. Assemblage conçu pour un raccordement fluidique fermable
US7690528B2 (en) 2001-10-08 2010-04-06 Itsac N.V. Assembly for a closable fluid connection
US8276777B2 (en) 2008-10-03 2012-10-02 Chuck Shieh Closure with tamper evident strip for container
EP3048064A1 (fr) * 2015-01-21 2016-07-27 Liqui-Box Corporation Ensemble d'éléments de perçage pour récipient souple
US9862531B2 (en) 2015-01-21 2018-01-09 Liqui-Box Corporation Piercing fitment assembly for flexible container
US11059633B2 (en) 2019-10-31 2021-07-13 Cheer Pack North America Flip-top closure for container

Also Published As

Publication number Publication date
GB9617293D0 (en) 1996-09-25
GB2301098A (en) 1996-11-27
GB2301098B (en) 1997-09-10
AU6696194A (en) 1995-09-04

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