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특허 상세정보

Coextruded multi-layer polyethylene film and bag construction

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B65D-011/00    B32B-007/02    B32B-027/08   
미국특허분류(USC) 428/35 ; 156/229 ; 229/53 ; 229/55
출원번호 US-0126932 (1980-03-03)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 62  인용 특허 : 5
초록

Laminar thermoplastic film constructions comprising a layer of low density polyethylene bonded to a layer of a dissimilar polymer blend comprising high density polyethylene and polyethylene copolymers. In particular such copolymers comprise polyethylene copolymerized with another alpha olefin containing from about 3 up to about 15 carbon atoms. Such copolymers are also characterized by being linear, low density polymers having densities which are below about 0.94 grams/cc.

대표
청구항

A thermoplastic bag structure having film walls comprising an inner layer and an outer layer coextruded therewith, said inner layer consisting essentially of branched low density polyethylene homopolymer and said outer layer comprising a resinous blend of a high density polyethylene homopolymer and linear low density ethylene-alpha-olefin copolymer, wherein said blend contains a major amount of said copolymer, said layer of low density polyethylene having a thickness on the order of from about 65% up to about 85% of the overall thickness of said laminate...

이 특허를 인용한 특허 피인용횟수: 62

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