发明授权
US08057911B2 Twist-wrap film and use thereof as packaging film 有权
作为包装薄膜,将其作为包装膜使用

  • 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
Twist-wrap film and use thereof as packaging film
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.
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