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특허 상세정보

Multilayer preform and container with polyethylene naphthalate (PEN), and method of forming same

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B32B-001/08    B32B-027/08   
미국특허분류(USC) 428/036.7 ; 428/036.6 ; 428/036.91 ; 428/480 ; 428/542.8 ; 428/903.3 ; 264/512 ; 264/513
출원번호 US-0835444 (1997-04-08)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Wolf, Greenfield & Sacks, P.C.
인용정보 피인용 횟수 : 70  인용 특허 : 2
초록

A multilayer preform and container, and method of forming the same, having at least one layer including polyethylene naphthalate (PEN) to provide enhanced oxygen barrier performance and thermal stability. The PEN layer may be a homopolymer, copolymer, or blend of PEN. In a first high-PEN embodiment, the exterior layer contains on the order of 80-100% PEN and 0-20% PET by total weight of the layer, and a core layer of a non-strain hardenable polyester such as PETG. In a second low-PEN embodiment, the exterior layer includes a strain hardenable low-PEN cop...

대표
청구항

[ What is claimed is:] [1.] A unitary expanded multilayer container having inner and outer exterior layers of a first polymeric material including a strain-crystallizable homopolymer, copolymer or blend of polyethylene naphthalate (PEN), and an interior core layer of a second polymeric material including a homopolymer, copolymer or blend of polyethylene terephthalate (PET), wherein the rate of thermal crystallization of the second polymeric material is substantially less than that of the first polymeric material within the orientation temperature range f...

이 특허를 인용한 특허 피인용횟수: 70

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