WO2004005153A1 - Element de fermeture etanche - Google Patents

Element de fermeture etanche Download PDF

Info

Publication number
WO2004005153A1
WO2004005153A1 PCT/IB2003/002606 IB0302606W WO2004005153A1 WO 2004005153 A1 WO2004005153 A1 WO 2004005153A1 IB 0302606 W IB0302606 W IB 0302606W WO 2004005153 A1 WO2004005153 A1 WO 2004005153A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
foil
sealing member
seal
cap
Prior art date
Application number
PCT/IB2003/002606
Other languages
English (en)
Inventor
Ernest George Simpkins
Original Assignee
Ernest George Simpkins
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 Ernest George Simpkins filed Critical Ernest George Simpkins
Priority to AU2003281353A priority Critical patent/AU2003281353A1/en
Publication of WO2004005153A1 publication Critical patent/WO2004005153A1/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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
    • B65D51/1616—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of a filter

Definitions

  • THIS invention relates to a sealing member for a container.
  • a plastic or glass container is sealed by applying a suitable foil to the opening of the container by induction heating.
  • foil is laminated on one side with polyethylene or any other plastics material which is compatible with the material of the container.
  • the uncoated surface of the aforementioned laminated foil is attached to a board (cardboard) backing by a wax adhesive.
  • the laminated foil is placed in the cap of a container and the cap is applied to the container so that the foil is held between the cap and the opening of the container.
  • the cap of the container is then passed under an induction sealing head and the electrical field created by the induction sealing head melts the polyethylene or plastic on the foil which, because of the pressure between the cap and container, is attached to the opening of the container. In this way the foil is sealed to the container.
  • the cap is removed and the seal is broken.
  • the seal is inserted into a cap with the board portion abutting the inside of the cap.
  • the board is fixed within the cap by an adhesive or by clips within the cap.
  • the cap is applied to the opening of a container so that the seal is held between the cap and the opening of the container.
  • the cap is then passed under an induction sealing head.
  • the electrical field created by the induction sealing head melts the polyethylene laminated foil and, because of the pressure between the cap and the container, the foil is attached to the rim of the container.
  • the wax adhesive in the seal melts, releasing the foil from the board.
  • the container is opened by removing the cap and breaking the seal.
  • the board is held within the cap by the adhesive or clips and serves to seal the container when the cap is once again attached to the container.
  • a problem which arises with containers sealed in the abovementioned manner is that either a vacuum or pressure is created within the container when the container moves from a higher to a lower altitude and from a lower to a higher altitude, respectively.
  • Containers which have flexible walls tend to either collapse or bulge when moving from a higher altitude to a lower altitude, or from a lower altitude to a higher altitude, respectively.
  • a sealing member for a container including a selective membrane which is liquid-resistant and gas-permeable.
  • the sealing member includes a foil, preferably an aluminium foil with at least one aperture extending through the foil, with the selective membrane sealing the at least one aperture in the foil.
  • the foil is coated with a plastics film which is responsive to induction heating, such as polyethylene.
  • the sealing member may also include a board having at least one aperture which is in communication with the at least one aperture extending through the foil, with the selective membrane sealing the at least one aperture in the foil and the board.
  • the invention also covers a container including a sealing member as described above, and a method of sealing a container using the sealing member described above.
  • Figure 1 is a cross-sectional side view of a sealing member for a container, according to a first embodiment of the invention
  • Figure 2 is a pictorial view of the sealing member of Figure 1 ;
  • Figure 3 is a pictorial view of a sealing member for a container, according to a second embodiment of the invention.
  • Figure 4 is a cross-sectional side view of the sealing member of
  • Figure 5 is a cross-sectional side view of a sealing member according to a third embodiment of the invention attached to a container.
  • a sealing member according to a first embodiment of the invention is shown generally by the reference numeral 10 and includes a strip of foil 12 which is a metal foil, typically aluminium foil having a thickness of 0,1mm.
  • the operatively lower surface of the foil 12 is coated with a plastics film 14 which is responsive to induction heating.
  • the plastics film 14 is polyethylene.
  • a number of apertures 16 extend through the foil 12 and the film 14. The apertures may be of any size but typically have a diameter of from 5 to 0,1 mm.
  • a selective membrane 18 is bonded to the foil 12 with an adhesive material or by ultrasonic welding 20 at the periphery of the foil 12, so that the selective membrane 18 covers the apertures 16.
  • the selective membrane 18 is liquid-resistant and gas- permeable and thus provides a liquid-resistant seal over the apertures 16.
  • a typical selective membrane is coated expanded polytetraflouroethylene membrane 18 which is available from WL Gore & Associates Inc.
  • FIG 2 shows the sealing member 10 of Figure 1 , for use in sealing the closure of a container having a round opening.
  • the selective membrane 18 is bonded to the foil 12 by an adhesive or ultrasonic welding 20 around the periphery of the foil 12 so that the apertures 16 are covered by the selective membrane 18. This ensures that there is a liquid- resistant seal between the foil 12 and membrane 18.
  • the sealing member 10 shown in Figures 1 and 2 includes a plurality of apertures 16 extending through the foil 12, there may, of course, be only one large aperture extending through the foil 12.
  • the apertures 16 extending through the foil 12 may be grouped together on a portion of the foil 12 and the selective membrane 18 may be of smaller size than the foil 12, but still of sufficient size to seal the apertures 16
  • the seal member 10 shown in Figures 1 , 2 or 3 is attached to the opening 26 of a container 22 containing a product 24
  • the product 24 may be a liquid product, or a solid product such as a powder
  • the seal member 10 may be attached to the opening 26 of the container 22 by any method known in the art, for example by the induction sealing method described in the background to the invention
  • the seal member 10 allows gas 28 to pass into, or out of, the container 22
  • liquid 30 is prevented from entering, or leaving, the container 22 by the selective membrane 18
  • gas in this case air
  • gas is allowed to pass from the atmosphere into the container and from the container 22 into the atmosphere, respectively, so that the gas pressure within the container 22 is the same as the atmospheric pressure and there is no build-up of a vacuum or of pressure within the container 22
  • gas in this case air
  • a seal member 32 is attached to the opening 34 of a container 36, below a screw-cap 38 which is attached to the container 36
  • the seal member 32 includes an aluminium foil 40 (having a thickness of 0,6mm), the lower surface of which is coated with a plastics film 42 (in this case polyethylene) which has already been inductively heated and which seals the foil 40 to the opening 34 to the container 36
  • a plastics film 42 in this case polyethylene
  • the operatively upper surface of the foil 40 is attached to a board 44 by a wax adhesive ⁇ " ⁇ r ' ⁇ ⁇ board 44 may have a thickness of from 0,5 to 1,2mm.
  • Apertures 48 extend through the plastics film 42, foil 40, board 44 and wax adhesive 46.
  • the apertures 48 are covered by a selectively permeable membrane 50.
  • the selectively permeable membrane 50 is adhered to the periphery of the board 44, by adhesive 52 and provides a liquid resistant seal over the apertures 48 which extend through the board 44.
  • the wax 46 may melt during the inducting heating process, the pressure of the screw-cap 38 on the seal 32, ensures that there is an effective liquid-resistant seal between the board 44 and foil 40.
  • the seal 32 works in the same way as the seal 10 shown in Figures 1, 2 and 3.
  • Gas in the form of air, is able to move through the seal 32 and out of the container 36 under the cap 38, or under the cap 38, through the seal 32 and into the container 36 when the container 36 is moved from a higher altitude to a lower altitude or from a lower altitude to a higher altitude, respectively, while liquid is not able to pass through the seal member 32.

Landscapes

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

Abstract

Cette invention concerne un opercule (10) servant à fermer un récipient. Cet opercule (10) comprend un support (12) comportant au moins une ouverture (16) s'étendant à travers le support, ainsi qu'une membrane (18) sélective servant à fermer la ou les ouvertures (16) du support. Cette membrane (18) sélective est étanche et perméable au gaz. Lorsqu'il est fixé sur un récipient, l'opercule permet à l'air d'entrer ou de sortir du récipient et empêche ainsi les récipients en plastique de s'écraser ou de gonfler lorsqu'ils montent ou descendent en altitude.
PCT/IB2003/002606 2002-07-04 2003-07-03 Element de fermeture etanche WO2004005153A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003281353A AU2003281353A1 (en) 2002-07-04 2003-07-03 Sealing member

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200205349 2002-07-04
ZA2002/5349 2002-07-04

Publications (1)

Publication Number Publication Date
WO2004005153A1 true WO2004005153A1 (fr) 2004-01-15

Family

ID=30116344

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2003/002606 WO2004005153A1 (fr) 2002-07-04 2003-07-03 Element de fermeture etanche

Country Status (2)

Country Link
AU (1) AU2003281353A1 (fr)
WO (1) WO2004005153A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2429009A (en) * 2005-08-09 2007-02-14 Jason Andrew Titton Venting drinks can for effervescent liquids
EP2011741A1 (fr) * 2007-07-05 2009-01-07 Kraft Foods Holdings, Inc. Récipients alimentaires adaptés pour l'accommodation des changements de pression et procédés de fabrication
WO2010081081A3 (fr) * 2009-01-09 2010-11-18 Porex Corporation Event intermédiaire pour récipient de fluides de remplissage chauds
JP2020011773A (ja) * 2018-07-18 2020-01-23 デサン・コーポレイション ガス排出用パッキングシートおよびこれを含む食品容器
DE102021119972A1 (de) 2021-08-02 2023-02-02 alfi GmbH Isoliergefäße, Metall- und Haushaltswaren Elastisches Dichtelement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160978A2 (fr) * 1984-05-07 1985-11-13 Nyffeler, Corti AG Membrane de fermeture pour un récipient dont le contenu dégage des gaz
US4863051A (en) * 1986-08-18 1989-09-05 Schering Aktiengesellschaft Lid for a liquid container
US5730306A (en) * 1994-03-31 1998-03-24 The Clorox Company Bi-directional venting liner
WO1998013273A1 (fr) * 1996-09-27 1998-04-02 Nuclear Filter Technology, Inc. Procede de fabrication et dispositifs utilisant des events

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160978A2 (fr) * 1984-05-07 1985-11-13 Nyffeler, Corti AG Membrane de fermeture pour un récipient dont le contenu dégage des gaz
US4863051A (en) * 1986-08-18 1989-09-05 Schering Aktiengesellschaft Lid for a liquid container
US5730306A (en) * 1994-03-31 1998-03-24 The Clorox Company Bi-directional venting liner
WO1998013273A1 (fr) * 1996-09-27 1998-04-02 Nuclear Filter Technology, Inc. Procede de fabrication et dispositifs utilisant des events

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2429009A (en) * 2005-08-09 2007-02-14 Jason Andrew Titton Venting drinks can for effervescent liquids
EP2011741A1 (fr) * 2007-07-05 2009-01-07 Kraft Foods Holdings, Inc. Récipients alimentaires adaptés pour l'accommodation des changements de pression et procédés de fabrication
US8584876B2 (en) 2007-07-05 2013-11-19 Kraft Foods Group Brands Llc Food containers adapted for accommodating pressure changes using skip seals and methods of manufacture
WO2010081081A3 (fr) * 2009-01-09 2010-11-18 Porex Corporation Event intermédiaire pour récipient de fluides de remplissage chauds
JP2020011773A (ja) * 2018-07-18 2020-01-23 デサン・コーポレイション ガス排出用パッキングシートおよびこれを含む食品容器
US10926926B2 (en) 2018-07-18 2021-02-23 Daesang Corporation Packing sheet for discharging gas and food container including the same
DE102021119972A1 (de) 2021-08-02 2023-02-02 alfi GmbH Isoliergefäße, Metall- und Haushaltswaren Elastisches Dichtelement

Also Published As

Publication number Publication date
AU2003281353A1 (en) 2004-01-23

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