Self-absorbing gas-barrier receptacle for food packaging and food package obtained therefrom
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65B-031/02
출원번호
US-0483583
(2002-07-04)
우선권정보
EP-01116999(2001-07-12)
국제출원번호
PCT/EP02/007464
(2002-07-04)
§371/§102 date
20040109
(20040109)
국제공개번호
WO03/066337
(2003-06-23)
발명자
/ 주소
Longo,Eugenio
출원인 / 주소
Cryovac, Inc.
인용정보
피인용 횟수 :
15인용 특허 :
9
초록▼
A receptacle (110, 112) suitable for food packaging which comprises a bottom or base portion (111, 121) defining a storage compartment or zone and a flange (113,123) circumferentially extending all around the receptacle contour providing an area for the closing lid to be sealed, said receptacle bein
A receptacle (110, 112) suitable for food packaging which comprises a bottom or base portion (111, 121) defining a storage compartment or zone and a flange (113,123) circumferentially extending all around the receptacle contour providing an area for the closing lid to be sealed, said receptacle being made of a multi-layer thermoplastic structure comprising at least i) an upper liquid absorbent layer (1) that is devised to be either in direct contact with the food product to be packaged in the receptacle or separated therefrom by one or more liquid pervious layers (5,6) allowing passage of liquids from the receptacle inner surface into the absorbent layer, and ii) a non-perforated liquid and gas-barrier thermoplastic film (2), and being characterized in that the surface exposed along a closed line in the circumferential flange (113, 123 ) is of the lower non-perforated liquid and gas-barrier thermoplastic film (2). By sealing a liquid-and gas-barrier lid to the exposed surface of the liquid-and gas-barrier film of the receptacle along said closed line in the circumferential flange, it is then possible to obtain a self-absorbing, gas-barrier, package.
대표청구항▼
What is claimed is: 1. A receptacle useful in packaging a food product between the receptacle and a lid, the receptacle comprising: a product storage zone for supporting the product; and a sealing zone circumferentially extending around the product storage zone; and a multi-layer structure comprisi
What is claimed is: 1. A receptacle useful in packaging a food product between the receptacle and a lid, the receptacle comprising: a product storage zone for supporting the product; and a sealing zone circumferentially extending around the product storage zone; and a multi-layer structure comprising: a liquid absorbent layer integral with the multi-layer structure; a gas-barrier film; and a support layer, wherein: the multi-layer structure has a product storage side; in the product storage zone of the receptacle, the liquid absorbent layer is closer than the gas-barrier film to the product storage side of the multi-layer structure; and in the sealing zone of the receptacle, the gas-barrier film forms the surface of the product storage side of the multi-layer structure, whereby the lid may be sealed directly to the gas-barrier film in the sealing zone. 2. The receptacle of claim 1 wherein: the receptacle comprises a depressed region and a flange circumferentially extending around the depressed region; and the flange comprises the sealing zone. 3. The receptacle of claim 1 wherein the liquid absorbent layer forms the surface of the product storage side of the multi-layer structure in the product storage zone of the receptacle. 4. The receptacle of claim 1 wherein the multi-layer structure has a configuration comprising: a bottom portion; one or more side walls extending from the bottom portion; and a flange extending outwardly from the one or more side walls substantially parallel to the bottom portion, wherein the flange comprises the sealing zone. 5. The receptacle of claim 1 wherein in the product storage zone the support layer is farther than the gas-barrier film from the product storage side of the multi-layer structure. 6. The receptacle of claim 1 wherein the liquid absorbent layer comprises an open cell foam. 7. The receptacle of claim 1 wherein the liquid absorbent layer comprises a superabsorbent polymer. 8. The receptacle of claim 1 wherein the gas-barrier film comprises: a gas-barrier layer; and a heat-seal layer, wherein the heat-seal layer is closer than the gas-barrier layer to the product storage side of the multi-layer structure. 9. The receptacle of claim 8 wherein: a first side of the heat-seal layer is directly adjacent the liquid absorbent layer and a second side of the heat-seal layer is directly adjacent another layer; the heat-seal layer has a first bond strength to the liquid absorbent layer; the heat-seal layer has a second bond strength to the another layer; and the first bond strength is less than the second bond strength. 10. The receptacle of claim 1 wherein the multi-layer structure has an oxygen transmission rate of less than 10 cm3 /m2.day.atm measured at 23째 C. and 0% relative humidity according to ASTM D-3985. 11. A method of packaging a product comprising: placing a product onto the product storage zone of the receptacle of claim 1; sealing a lid to the gas-barrier film at the sealing zone of the receptacle to enclose the product between the lid and the receptacle. 12. The method of claim 11 wherein the product comprises a food product. 13. The method of claim 11 further comprising vacuumizing the space between the receptacle and the lid. 14. The method of claim 11 further comprising flushing the space between the receptacle and the lid with a modified atmosphere capable of extending the shelf life of the product. 15. A package comprising: the receptacle of claim 1; and a lid circumferentially sealed to the gas-barrier film at the sealing zone of the receptacle. 16. A receptacle useful in packaging a food product between the receptacle and a lid, the receptacle comprising: a product storage zone for supporting the product; and a sealing zone circumferentially extending around the product storage zone; and a multi-layer structure comprising: a liquid absorbent layer integral with the multi-layer structure; and a gas-barrier film, wherein: the multi-layer structure has a product storage side; in the product storage zone of the receptacle, the liquid absorbent layer is closer than the gas-barrier film to the product storage side of the multi-layer structure; in the sealing zone of the receptacle, the gas-barrier film forms the surface of the product storage side of the multi-layer structure, whereby the lid may be sealed directly to the gas-barrier film in the sealing zone; and the multi-layer structure further comprises a liquid pervious layer forming the surface of the product storage side of the multi-layer structure in the product zone of the receptacle, the liquid pervious layer being adapted to allow liquid from the product to pass through the liquid pervious layer to the liquid absorbent layer. 17. The receptacle of claim 16 wherein the liquid pervious layer defines a plurality of perforations. 18. A receptacle useful in packaging a food product between the receptacle and a lid, the receptacle comprising: a product storage zone for supporting the product; and a sealing zone circumferentially extending around the product storage zone; and a multi-layer structure comprising: a liquid absorbent layer integral with the multi-layer structure; and a gas-barrier film, wherein: the multi-layer structure has a product storage side; in the product storage zone of the receptacle, the liquid absorbent layer is closer than the gas-barrier film to the product storage side of the multi-layer structure; in the sealing zone of the receptacle, the gas-barrier film forms the surface of the product storage side of the multi-layer structure, whereby the lid may be sealed directly to the gas-barrier film in the sealing zone; and the liquid absorbent layer comprises a material selected from an open cell foam and a superabsorbent polymer. 19. The receptacle of claim 18 wherein the liquid absorbent layer comprises an open cell foam. 20. The receptacle of claim 18 wherein the liquid absorbent layer comprises a superabsorbent polymer. 21. The receptacle of claim 18 wherein the liquid absorbent layer forms the surface of the product storage side of the multi-layer structure in the product storage zone of the receptacle. 22. The receptacle of claim 18 wherein the multi-layer structure further comprises a liquid pervious layer forming the surface of the product storage side of the multi-layer structure in the product zone of the receptacle, the liquid pervious layer being adapted to allow liquid from the product to pass through the liquid pervious layer to the liquid absorbent layer. 23. The receptacle of claim 18 wherein the gas-barrier film comprises a gas-barrier polymer selected from one or more of ethylene/vinyl alcohol copolymer, vinylidene chloride copolymer, and polyamide. 24. The receptacle of claim 23 wherein the gas-barrier film comprises: a gas-barrier layer comprising the gas-barrier polymer; and a bulk layer. 25. The receptacle of claim 18 wherein the multi-layer structure has an oxygen transmission rate of less than 10 cm3 /m2.day.atm measured at 23째 C. and 0% relative humidity according to ASTM D-3985. 26. A method of packaging a product comprising: placing a product onto the product storage zone of the receptacle of claim 18; sealing a lid to the gas-barrier film at the sealing zone of the receptacle to enclose the product between the lid and the receptacle.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.