发明授权
- 专利标题: MULTILAYER POLYOLEFIN FILM AS A PVC REPLACEMENT FILM
- 专利标题(中): 聚烯烃复合膜作为替代PVC薄膜
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申请号: EP01966525.6申请日: 2001-08-30
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公开(公告)号: EP1318908B1公开(公告)日: 2004-06-16
- 发明人: RAY, Carl, Douglas , DIPOTO, James, Peter , PATEL, Shailesh, Chunilal
- 申请人: Tredegar Film Products Corporation
- 申请人地址: 1100 Boulders Parkway Richmond, VA 23225 US
- 专利权人: Tredegar Film Products Corporation
- 当前专利权人: Tredegar Film Products Corporation
- 当前专利权人地址: 1100 Boulders Parkway Richmond, VA 23225 US
- 代理机构: Hayes, Adrian Chetwynd
- 优先权: US667383 20000922
- 国际公布: WO2002024450 20020328
- 主分类号: B32B27/32
- IPC分类号: B32B27/32
摘要:
A coextruded multilayer film laminate featuring a polyolefin based formulation which closely matches the mechanical performance criteria of a plasticized PVC film is disclosed. This film is particularly suitable for use as a replacement film for plasticized PVC in a variety of medical and non-medical applications. The multilayer films of the present invention offer a particular set of mechanical properties, normally associated with plasticized PVC, including easy stretch, high degree of recovery, low fatigue and minimal permanent set. Moreover, these polyolefin based formulations do not contain any known or suspected carcinogenic compounds and may be produced at costs that are highly competitive with the costs associated with a conventional, plasticized PVC film. This film comprises a core layer of a metallocene ULDPE polyolefin plastomer/ethylene copolymer blend and at least one skin layer of a LLDPE/LDPE blend coextruded on either side of said core layer.
公开/授权文献
- EP1318908A1 MULTILAYER POLYOLEFIN FILM AS A PVC REPLACEMENT FILM 公开/授权日:2003-06-18
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