发明授权
- 专利标题: Multilayer film having polyamide and polypropylene layers
- 专利标题(中): 具有聚酰胺和聚丙烯层的多层膜
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申请号: US13649379申请日: 2012-10-11
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公开(公告)号: US09248627B2公开(公告)日: 2016-02-02
- 发明人: Andreas Pawlik , Martin Wielpuetz , Harald Haeger
- 申请人: Andreas Pawlik , Martin Wielpuetz , Harald Haeger
- 申请人地址: DE Essen
- 专利权人: EVONIK DEGUSSA GmbH
- 当前专利权人: EVONIK DEGUSSA GmbH
- 当前专利权人地址: DE Essen
- 代理机构: Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权: DE102011084521 20111014
- 主分类号: B32B7/02
- IPC分类号: B32B7/02 ; B32B17/10 ; B32B27/00 ; B32B27/08 ; B32B27/32 ; B32B27/34 ; H01L31/049
摘要:
Multilayer films of polyamide and polypropylene which have good layer adhesion and are suitable for a back cover of a solar module are provided. In a first embodiment, the multilayer film contains in the order listed: a) a layer containing at least 35% by weight, of polyamide; c) a layer containing at least 35% by weight of a polypropylene; and e) a layer containing at least 35% by weight, of polyamide; wherein the layer c) further comprises a polypropylene having acid anhydride groups or a polypropylene compatible functionalized polyolefin having functional groups to adhere the layer c) to each of layers a) and e). In a second embodiment adhesion promoter layers are present between the respective polyamide and polypropylene layers.