IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0651625
(2012-10-15)
|
등록번호 |
US-8541081
(2013-09-24)
|
발명자
/ 주소 |
- Ranganathan, Sumita Sanjeevi
- Westmoreland, Blake L
- Moehlenbrock, Andrew W
- Frost, Amy Joe
- Shaver, Vivian Ann
- Karam, Debra Chandler
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
11 |
초록
▼
An easy-open, reclosable package includes a tray with tray liner; a product; and a lidstock, including a substrate including a first layer of high modulus thermoplastic material, and a second layer including an oxygen barrier; and a coextruded film including a first layer including a blend of from 8
An easy-open, reclosable package includes a tray with tray liner; a product; and a lidstock, including a substrate including a first layer of high modulus thermoplastic material, and a second layer including an oxygen barrier; and a coextruded film including a first layer including a blend of from 80% to 88% ionomer resin, and from 12% to 20% olefinic polymer, a second layer including a pressure sensitive adhesive, and optionally a third layer including a polymeric adhesive; wherein the first layer of the coextruded film is sealed to the tray liner; the coextruded film is adhered to an inner surface of the substrate film; and after the package is opened, and the pressure sensitive adhesive is exposed, the package can be reclosed by adhering the adhesive to a portion of the first layer of the coextruded film that remained sealed to the tray liner when the package was opened.
대표청구항
▼
1. An easy-open, reclosable package comprising: a) a tray comprising a tray liner, tray bottom, tray sides, and a tray flange, wherein the tray bottom and tray sides define a tray cavity, and wherein the tray liner comprises a sealant layer comprising at least 80%, by weight of the sealant layer, of
1. An easy-open, reclosable package comprising: a) a tray comprising a tray liner, tray bottom, tray sides, and a tray flange, wherein the tray bottom and tray sides define a tray cavity, and wherein the tray liner comprises a sealant layer comprising at least 80%, by weight of the sealant layer, of ionomer resin;b) a product disposed in the tray cavity; andc) a laminated lidstock, sealed to the tray liner as a seal, comprising i) a substrate film, having an outer surface and an inner surface, comprising (a) a first layer comprising a high modulus thermoplastic material selected from the group consisting of biaxially oriented polyethylene terephthalate, biaxially oriented polypropylene, and biaxially oriented nylon, and(b) a second layer comprising a polymeric oxygen barrier having an oxygen permeability, of the barrier material, less than 50 cm3 O2/m2·day·atmosphere measured at a thickness of 1 mil (ASTM D 3985); andii) a coextruded film, having an outer surface and an inner surface, comprising (a) a first layer comprising a blend of from 80% to 88%, by weight of the blend, of an ionomer resin, and from 12% to 20%, by weight of the blend, of an olefinic polymer, and(b) a second layer comprising a pressure sensitive adhesive;whereinthe first layer of the coextruded film is sealed to the tray liner;the coextruded film is adhered to the inner surface of the substrate film; andafter the package has been opened, at least a portion of the pressure sensitive adhesive is exposed, and the package can be reclosed by adhering the pressure sensitive adhesive to a portion of the first layer of the coextruded film that remained sealed to the tray liner when the package was opened. 2. The package of claim 1 wherein the oxygen barrier comprises polyvinylidene chloride copolymer. 3. The package of claim 1 wherein the high modulus thermoplastic material comprises biaxially oriented polyethylene terephthalate. 4. The package of claim 1 wherein the second layer comprising a pressure sensitive adhesive is adhered to the inner surface of the substrate film. 5. The package of claim 1 wherein at least one of the outer and inner surfaces of the substrate film comprises printed indicia. 6. The package of claim 1 wherein the laminated lidstock further comprises a printed film, adhered to the outer surface of the substrate film, comprising a support layer comprising biaxially oriented polyethylene terephthalate, and a print layer. 7. The package of claim 1 wherein the coextruded film further comprises a third layer comprising a polymeric adhesive. 8. The package of claim 7 wherein the third layer comprising a polymeric adhesive is adhered to the inner surface of the substrate film. 9. The package of claim 1 wherein the first layer of the coextruded film comprises a blend of from 80% to 88%, by weight of the blend, of an ionomer resin, and from 12% to 20%, by weight of the blend, of an olefinic polymer selected from low density polyethylene, ethylene/vinyl acetate copolymer, ethylene/butyl acrylate copolymer, ethylene/acrylic acid copolymer, ethylene/methacrylic acid copolymer, ethylene/acrylate copolymer, and ethylene/methacrylate copolymer. 10. The package of claim 1 wherein the third layer of the coextruded film comprises a blend of from 80% to 88%, by weight of the blend, of an ionomer resin, and from 12% to 20%, by weight of the blend, of low density polyethylene. 11. The package of claim 1 wherein a portion of the laminated lidstock comprises a pull tab disposed at one end or corner of the package. 12. A laminated lidstock comprising: a) a substrate film, having an outer surface and an inner surface, comprising i) a first layer comprising a high modulus thermoplastic material selected from the group consisting of biaxially oriented polyethylene terephthalate, biaxially oriented polypropylene, and biaxially oriented nylon, andii) a second layer comprising a polymeric oxygen barrier having an oxygen permeability, of the barrier material, less than 50 cm3 O2/m2·day·atmosphere measured at a thickness of 1 mil (ASTM D 3985); andb) a coextruded film, having an outer surface and an inner surface, comprising i) a first layer comprising a blend of from 80% to 88%, by weight of the blend, of an ionomer resin, and from 12% to 20%, by weight of the blend, of an olefinic polymer,ii) a second layer comprising a pressure sensitive adhesive;wherein the coextruded film is adhered to the inner surface of the substrate film. 13. The laminated lidstock of claim 12 wherein the oxygen barrier comprises polyvinylidene chloride copolymer. 14. The laminated lidstock of claim 12 wherein the high modulus thermoplastic material comprises biaxially oriented polyethylene terephthalate. 15. The laminated lidstock of claim 12 wherein the second layer comprising a polymeric adhesive is adhered to the inner surface of the substrate film. 16. The laminated lidstock of claim 12 wherein at least one of the outer and inner surfaces of the substrate film comprises printed indicia. 17. The laminated lidstock of claim 12 further comprising a printed film, adhered to the outer surface of the substrate film, comprising a support layer comprising biaxially oriented polyethylene terephthalate, and a print layer. 18. The laminated lidstock of claim 12 wherein the coextruded film further comprises a third layer comprising a polymeric adhesive. 19. The laminated lidstock of claim 18 wherein the third layer comprising a polymeric adhesive is adhered to the inner surface of the substrate film. 20. The laminated lidstock of claim 12 wherein the first layer of the coextruded film comprises a blend of from 80% to 88%, by weight of the blend, of an ionomer resin, and from 12% to 20%, by weight of the blend, of an olefinic polymer selected from low density polyethylene, ethylene/vinyl acetate copolymer, ethylene/butyl acrylate copolymer, ethylene/acrylic acid copolymer, ethylene/methacrylic acid copolymer, ethylene/acrylate copolymer, and ethylene/methacrylate copolymer.
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