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특허 상세정보

Multi-layer barrier film

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B32B-027/08    B65D-011/00   
미국특허분류(USC) 428/35 ; 428/500 ; 428/516 ; 428/518
출원번호 US-0973943 (1978-12-28)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 118  인용 특허 : 19
초록

A delamination resistant multi-layer film comprises a core layer of vinyl alcohol polymers or copolymers such as polyvinyl alcohol or ethylene vinyl alcohol. Adhered to the core layer are one or more layers of a polyolefin blended with a chemically modified polyolefin having functional groups added to the basic polymer such that strong adhesion to the core layer is obtained. The core layer provides an excellent oxygen barrier, while the adjacent layers protect the core layer from degradation by exposure to water vapor. Additional layers of various polyme...

대표
청구항

A delamination resistant multi-layer structure comprising a barrier layer of a substantially pure polymer or copolymer of vinyl alcohol adhered directly to a layer of a modified polyolefin which consists essentially of a polyolefin polymer or copolymer blended with a graft copolymer of polyethylene and an unsaturated fused ring carboxylic acid anhydride. A delamination resistant coextruded multi-layer structure comprising (a) a substantially pure ethylene vinyl alcohol copolymer core layer; (b) a modified polyolefin layer on each side of and adjacent the...

이 특허에 인용된 특허 (19)

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