发明授权
- 专利标题： Easily tearable biaxially oriented polyester film
- 专利标题（中）： 易撕双轴取向聚酯薄膜
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申请号： US947145申请日： 1997-10-08
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公开(公告)号： US6156441A公开(公告)日： 2000-12-05
- 发明人: Tomohiro Hamada , Minoru Kishida , Tetsuo Matsumoto
- 申请人： Tomohiro Hamada , Minoru Kishida , Tetsuo Matsumoto
- 申请人地址： JPX Hyogo
- 专利权人： Unitika Ltd.
- 当前专利权人： Unitika Ltd.
- 当前专利权人地址： JPX Hyogo
- 优先权： JPX8-268987 19961009
- 主分类号： B29D7/01
- IPC分类号： B29D7/01 ; B32B27/36 ; C08J5/18 ; C08L67/02 ; B65D30/02 ; B65D33/00 ; C08F20/10
摘要：
The present invention provides a biaxially oriented polyester film having a linearly tearable property at least in a longitudinal direction, and excellent in the producability at mass production scale, which can be produced from the mixture of polybutylene terephthalate containing 5 to 20% by weight of a polytetramethylene glycol (PTMG) unit having a molecular weight of 600 to 4,000 (modified PBT) and polyethylene terephthalate (PET) in a weight ratio (PET/modified PBT) of 70/30 to 95/5.
公开/授权文献
- US5232592A Cap for underdrains in gravity filters 公开/授权日：1993-08-03