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WO2005000706B1 - Food bag release valve - Google Patents

Food bag release valve

Info

Publication number
WO2005000706B1
WO2005000706B1 PCT/US2004/017145 US2004017145W WO2005000706B1 WO 2005000706 B1 WO2005000706 B1 WO 2005000706B1 US 2004017145 W US2004017145 W US 2004017145W WO 2005000706 B1 WO2005000706 B1 WO 2005000706B1
Authority
WO
WIPO (PCT)
Prior art keywords
set forth
vent
area
layer
release valve
Prior art date
Application number
PCT/US2004/017145
Other languages
French (fr)
Other versions
WO2005000706A1 (en
Inventor
Richard L Sandt
William G Hartman
Paula A Buford
Original Assignee
Avery Dennison Corp
Richard L Sandt
William G Hartman
Paula A Buford
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 Avery Dennison Corp, Richard L Sandt, William G Hartman, Paula A Buford filed Critical Avery Dennison Corp
Publication of WO2005000706A1 publication Critical patent/WO2005000706A1/en
Publication of WO2005000706B1 publication Critical patent/WO2005000706B1/en
Priority to US11/238,566 priority Critical patent/US7244223B2/en
Priority to US11/758,705 priority patent/US7399263B2/en

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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2023—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum in a flexible container
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/84—Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
    • B31B70/85—Applying patches or flexible valve inserts, e.g. applying film-like valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A release valve (10) for a food bag (12) comprising a vent layer (30) and a cover layer (32). The vent layer (30) is positioned over an opening (24) in a bag structure (13) of the food bag (12) and the cover layer (32) positioned over the vent layer (30) and attached thereto. A sealable area (52) forms a sealed passageway between the bag structure (13) and the vent layer (30), and a sealed area (56) forms a sealed passageway between the vent layer (30) and the cover layer (32). A slit (42) in the cover layer (32) forms an exit from the sealed area (56), whereby released gas passes from the area (52), through the vent layer (30), to the area (56), and exits through the slit (42).

Claims

AMENDED CLAIMS [received by the International Bureau on 20 December 2004 (20.12.2004); original claims 1, 29-32 and 36 amended; original claim 45 cancelled; remaining claims unchanged (6 pages)]
1. A release valve (10) for a flexible container (12) comprising: a vent layer (30) positioned over an opening (24) in a bag structure (13) of the flexible container (12), the vent layer (30) being pervious with respect to expected gasses and substantially impervious with respect to expected liquids; a sealable area (52) forforming a sealed passageway between the vent layer (30) and the bag structure (13), the area (52) having at least a portion positioned for alignment with the opening (24) in the bag structure (13); a cover layer (32) positioned over the vent layer (30) and attached thereto, the periphery of the cover layer (32) not extending beyond the periphery of the vent layer (30); a sealed area (56) forming a sealed passageway between the vent layer (30) and the cover layer (32), the sealed area (56) having a least a portion aligned with the sealable area (52); and at least one slit (42) through the cover layer (32) forming an exit from the sealed area (56), whereby released gas can pass from the area (52), through the vent layer (30) to the area (56), and exit the area (56) through the at least one slit (42).
2. A release valve (10) as set forth in the preceding claim, wherein the vent layer (30) and the cover layer (32) are of substantially the same shape and size, and are coextensive with each other.
3. A release valve (10) as set forth in either of the preceding claims, wherein the vent layer (30) and the cover layer (32) are each of a substantially circular shape. 4. A release valve (10) as set forth in any of the preceding claims, wherein the vent layer (30) comprises a non-woven polymer fabric.
5. A release valve (10) as set forth in any of the preceding claims, wherein the cover layer (32) comprises a polymer film.
20 AMENDED SHEET (ARTICLE, 19)
6. A release valve (10) as set forth in any of the preceding claims, wherein the sealable area (52) is formed by an adhesive area (50) on the inner surface (34) of the vent layer (30), the adhesive area (50) bordering the periphery of the inner surface (34) and surrounding, and sealing, the sealable area (52). 7. A release valve (10) as set forth in the preceding claim, wherein the adhesive area (50) can be used to attach the valve (10) to the bag structure (13).
8. A release valve (10) as set forth in either of the preceding two claims, wherein the adhesive area (50) is formed from a pressure-sensitive adhesive (62).
9. A release valve (10) as set forth in any of the preceding claims, wherein the sealed area (56) is formed by an adhesive area (54) bordering the periphery of the outer surface (36) of the vent layer (30).
10. A release valve (10) as set forth in the preceding claim, wherein the adhesive area (54) also attaches the cover layer (32) to the vent layer (30).
11. A release valve (10) as set forth in either of the two preceding claims, wherein the adhesive area (54) is formed from a curable adhesive (66).
12. A release valve (10) as set forth in any of the preceding claims, wherein the sealable area (52) and the sealed area (56) are of substantially the same size and shape, and wherein the sealable area (52) and the sealed area (56) are substantially aligned with each other. 13. A release valve (10) as set forth in any of the preceding claims, wherein the sealable area (52) and the sealed area (56) each have a substantially circular shape.
1 . A release valve (10) as set forth in any of claims 1 - 13, wherein the at least one slit (42) forms at least one flap (44) which lifts relative to the rest of the cover layer (32) when released gas passes through the slit (42).
21
AMENDED SHEET (ARTICLE, 19)
15. A release valve (10) as set forth in the preceding claim, wherein the at least one slit (42) forms a plurality of flaps (44) which Irft relative to the rest of the cover layer (32) when released gas passes through the slit (42).
16. A release valve (10) as set forth in either of the preceding two claims, wherein the at least one slit (42) comprises a plurality of slits (42).
17. A release valve (10) as set forth in any of claims 1 - 13, wherein the at least one slit (42) is of a flapless design.
18. A release valve (10) as set forth in claim 17, wherein the at least one slit (42) comprises a plurality of perforations. 19. A release valve (10) as set forth in claim 17, wherein the at least one slit (42) comprises a plurality of linear cuts.
20. A web (80) comprises a plurality of the release valves (10) set forth in any of the preceding claims and a release liner (78) to which the valves (10) are temporarily attached for selective removal therefrom for integration into the bag structure (13).
21. A web (80) as set forth in claim 20 in a roll form.
22. A web (80) as set forth in claim 20 in a sheet form.
23. A web (80) as set forth in any of claims 20 - 22, when they depend from claim 6, wherein the adhesive area (50) temporarily attaches the valves (10) to the release liner (80).
24. A method of making a plurality of the release valves (10) set forth in any of the preceding claims, said method comprising the steps of:
22
AMENDED SHEET (ARTICLE, 19) overlaying a vent material (70) and a cover material (60) so that an outer surface (74) of the vent material (70) is adjacent an inner surface (62) of the cover material (60); positioning an adhesive (68) between the outer surface (74) of the vent material (70) and the inner surface (62) of the cover material (60) in a pattern corresponding to the baffle areas (56); positioning an adhesive (76) on the inner surface (72) of the vent material (70) in a pattern corresponding to the sealable areas (52); cutting the cover material (60) and the vent material (70) into shapes corresponding to the overall shape of the valves (10); and cutting the cover material (60) with cuts corresponding to the slits (42).
25. A method as set forth in the preceding claim, wherein said step of positioning the adhesive (62) on the inner surface of the vent material (60) comprises the step of applying the adhesive (62) to the inner surface of the vent material (60).
26, A method as set forth in the preceding claim, further comprising the step of overlaying a release liner (64) over the adhesive (62) on the inner surface of the vent material (60). 27. A method as set forth in any of claims 24 - 26, wherein said step of overlaying the cover material (60) and the vent material (70) and said step of positioning the adhesive (76) between the cover material (60) and the vent material (70) comprises applying the adhesive (76) to the inner surface (62) of the cover material (60) and overlaying the vent material (70) over the adhesive (76).
28. A method as set forth in any of claims 24-27, wherein said slit-forming step is performed substantially simultaneously with said cutting step.
29. A flexible container (12) comprising a bag structure (13) having an opening (24) and the air release valve (10) set forth in any of claims 1 - 19, wherein the vent layer (30) is positioned so that the sealable area (52) has at least a portion
23 aligned with the opening (24) in the bag structure (13) and wherein the vent layer (30) is attached to the bag structure (13) so that the sealable area (52) forms a sealed passageway between the vent layer (30) and the bag structure (13).
30. A flexible container (12) as set forth in the preceding claim, wherein the bag structure (13) includes a recloseable seam (22).
31. A flexible container (12) as set forth in the preceding claim, wherein the bag structure (13) comprises a plurality of thermoplastic panels (14, 16) and wherein the opening (24) is on one of the panels (14).
32. A method of using the flexible container (12) set forth in any of claims 29 - 31 » said method comprising the steps of: placing a portion of food (F) into the bag structure (13); closing the bag structure (13); and applying pressure to the bag structure (13) to release air from its interior cavity through the air release valve (10). 33. A method as set forth in the preceding claim, further comprising the step of placing the closed bag structure (13) in a freezer after performing said pressure-applying step.
34. A method as set forth in either of the preceding two claims, wherein said placing, closing, and pressure-applying steps are performed by a consumer when storing food for later consumption.
35. A method as set forth in any of the preceding three claims, wherein said pressure-applying step comprises pushing a portion of the bag structure (13).
36. A method of making a plurality of the flexible containers (12) set forth in any claims 29 - 31, said method comprising the steps of: manufacturing a plurality of the bag structures (13); separately manufacturing a plurality of the release valves (10);
24 aligning the release valves (10) with the openings (24) in the bag structures (13) so that the sealable areas (52) will form sealed passageways between the vent layers (30) and the bag structures (13); securing the aligned release valves (10) to the bag structures (13).
g 37. A method as set forth in the preceding claim, wherein the bag- manufacturing step is performed at a bag-manufacturing location and the valve- manufacturing step is performed at a different valve-manufacturing location.
38. A method as set forth in either of the preceding claim, wherein saido valve-manufacturing step results in a web (80) comprising a plurality of the release valves (10) temporarily attached to a liner (78) for selective removal therefrom.
39. A method as set forth in the preceding claim, further comprising the step of removing the plurality of valves (10) from the liner (78) priorto said securing step. s 40. A method as set forth in claim 39, wherein said removing step is performed automatically by a machine.
41. A method as set forth in claim 39, wherein said removing step is performed by hand. 0 42. A method as set forth in any of claims 36 - 4 , wherein said aligning step and/or said securing step is performed automatically by a machine.
43. A method as set forth in any of claims 36 - 4 , wherein said aligning step and/or said securing step is performed by hand.
44. A release valve (10) for a flexible container (13) comprising a vent 25 layer (30), a cover layer (32), a passageway between the vent layer (30) and the cover layer (32), and an exit (42) for released gas; wherein the periphery of the cover layer (32) does not extend beyond the periphery of the vent layer (30).
25
PCT/US2004/017145 2003-05-30 2004-06-01 Food bag release valve WO2005000706A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/238,566 US7244223B2 (en) 2003-05-30 2005-09-29 Food bag release valve
US11/758,705 US7399263B2 (en) 2003-05-30 2007-06-06 Food bag release valve

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US47473503P 2003-05-30 2003-05-30
US60/474,735 2003-05-30
US51679103P 2003-11-03 2003-11-03
US60/516,791 2003-11-03

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US11/238,566 Continuation US7244223B2 (en) 2003-05-30 2005-09-29 Food bag release valve
US11/758,705 Continuation US7399263B2 (en) 2003-05-30 2007-06-06 Food bag release valve

Publications (2)

Publication Number Publication Date
WO2005000706A1 WO2005000706A1 (en) 2005-01-06
WO2005000706B1 true WO2005000706B1 (en) 2005-02-17

Family

ID=33514029

Family Applications (3)

Application Number Title Priority Date Filing Date
PCT/US2004/017145 WO2005000706A1 (en) 2003-05-30 2004-06-01 Food bag release valve
PCT/US2004/017385 WO2004108557A2 (en) 2003-05-30 2004-06-01 Food bag release valve
PCT/US2004/017373 WO2004108556A1 (en) 2003-05-30 2004-06-01 Food bag release valve

Family Applications After (2)

Application Number Title Priority Date Filing Date
PCT/US2004/017385 WO2004108557A2 (en) 2003-05-30 2004-06-01 Food bag release valve
PCT/US2004/017373 WO2004108556A1 (en) 2003-05-30 2004-06-01 Food bag release valve

Country Status (1)

Country Link
WO (3) WO2005000706A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8973789B2 (en) 2010-08-05 2015-03-10 Ds Smith Plastics Limited Closure valve assembly for a container

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US8419279B2 (en) 2004-06-29 2013-04-16 The Glad Products Company Flexible storage bag
US7726880B2 (en) 2004-06-29 2010-06-01 The Glad Products Company Flexible storage bag
US7597479B2 (en) 2005-01-20 2009-10-06 The Glad Products Company Storage bag with fluid separator
US7837387B2 (en) * 2005-04-06 2010-11-23 Avery Dennison Corporation Evacuatable container
USD593423S1 (en) 2006-11-03 2009-06-02 Reynolds Foil Inc. Evacuable, resealable bag
USD578020S1 (en) 2006-11-03 2008-10-07 Reynolds Foil Inc. Evacuable, resealable bag
USD595593S1 (en) 2006-11-03 2009-07-07 Reynolds Foil Inc. Evacuable, resealable bag
USD558597S1 (en) 2006-11-20 2008-01-01 Alcoa Inc. Evacuable, resealable bag
USD558599S1 (en) 2007-05-24 2008-01-01 Alcoa Inc. Evacuable, resealable bag
USD558600S1 (en) 2007-05-24 2008-01-01 Alcoa Inc. Evacuable, resealable bag
USD555510S1 (en) 2007-05-24 2007-11-20 Alcoa Inc. Evacuable, resealable bag
USD558598S1 (en) 2007-05-24 2008-01-01 Alcoa Inc. Evacuable, resealable bag
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EP2542482A2 (en) * 2010-03-05 2013-01-09 Avery Dennison Corporation Valve providing resistant seal and air expulsion in a receptacle
CO6660073A1 (en) 2011-10-19 2013-04-30 C I Banacol S A Packing with breathable valve for perishable products
ITVR20110215A1 (en) * 2011-12-02 2013-06-03 Plastar Pak S R L FLUID-HOLDING PATCH FOR VACUUM COOKING
ITMI20140037U1 (en) 2014-01-27 2015-07-27 Masterpack S P A LABELS - SELF-ADHESIVE VALVE
IT201700119051A1 (en) * 2017-10-20 2019-04-20 Masterpack S P A Adhesive valve, sheet and container for foodstuffs, as well as process for manufacturing this adhesive valve or sheet
IT201800003120A1 (en) * 2018-02-28 2019-08-28 Masterpack S P A Adhesive valve, foil and food container, as well as a process for making this adhesive valve or foil
WO2019077536A1 (en) * 2017-10-20 2019-04-25 Masterpack S.P.A. Adhesive valve, sheet and container for food, support as well as process for manufacturing this adhesive valve
KR102040443B1 (en) * 2019-06-03 2019-11-04 소윤섭 Gas Emission Valve for Packaging

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8973789B2 (en) 2010-08-05 2015-03-10 Ds Smith Plastics Limited Closure valve assembly for a container

Also Published As

Publication number Publication date
WO2005000706A1 (en) 2005-01-06
WO2004108556A1 (en) 2004-12-16
WO2004108557A2 (en) 2004-12-16
WO2004108557B1 (en) 2005-08-25
WO2004108557A3 (en) 2005-06-30
WO2004108556B1 (en) 2005-03-03

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