发明授权
- 专利标题: Twist-wrap film and use thereof as packaging film
- 专利标题(中): 作为包装薄膜,将其作为包装膜使用
-
申请号: US11667830申请日: 2005-11-18
-
公开(公告)号: US08057911B2公开(公告)日: 2011-11-15
- 发明人: Waldemar Lohr
- 申请人: Waldemar Lohr
- 申请人地址: DE Wiesbaden
- 专利权人: Constantia Ebert GmbH
- 当前专利权人: Constantia Ebert GmbH
- 当前专利权人地址: DE Wiesbaden
- 代理机构: Young & Thompson
- 优先权: ATA2001/2004 20041129
- 国际申请: PCT/EP2005/012370 WO 20051118
- 国际公布: WO2006/058621 WO 20060608
- 主分类号: B32B27/08
- IPC分类号: B32B27/08 ; B65B7/12
摘要:
The invention relates to a twist-wrap film (1, 2, 3) which is produced by coextrusion of a plurality of plastic layers. The inventive film is characterized in that at least a) one or more plastic layer(s) (4, 4′) consist of one or more semicrystalline polyolefin(s) having a uniform structure and b) at least one additional layer from an amorphous cycloolefin copolymer (5) having a uniform structure, the layers a) and b) being in direct contact. The selection of an amorphous cycloolefin copolymer having a uniform structure in at least one layer of the inventive twist-wrap film combined with a semicrystalline polyolefin having a uniform structure allows to provide a twist-wrap film that can be easily produced and that has the rigidity required for twist-wrap packagings and a satisfactory deadfold behavior, i.e., recovery behavior.
公开/授权文献
- US20080003417A1 Twist-Wrap Film and Use Thereof as Packaging Film 公开/授权日:2008-01-03
信息查询