发明授权
- 专利标题： Co-extruded film with non-crystalline core
- 专利标题（中）： 非晶核心共挤出薄膜
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申请号： US752369申请日： 1996-11-19
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公开(公告)号： US5759756A公开(公告)日： 1998-06-02
- 发明人: Thomas M. Laney , Jehuda Greener , Wen-Li A. Chen
- 申请人： Thomas M. Laney , Jehuda Greener , Wen-Li A. Chen
- 申请人地址： NY Rochester
- 专利权人： Eastman Kodak Company
- 当前专利权人： Eastman Kodak Company
- 当前专利权人地址： NY Rochester
- 主分类号： B29C55/12
- IPC分类号： B29C55/12 ; B29D7/01 ; B29K67/00 ; B29L9/00 ; B32B27/08 ; B32B27/36 ; G03C1/795
摘要：
The present invention is a photographic support including a core layer of a transparent non-crystalline polymer having a glass transition temperature Tg. The core layer has a first surface and a second surface. A first outer layer of a transparent crystalline polymer having a first stretch temperature Ts.sub.1 greater than the Tg is superposed on the first surface of said core layer. A second outer layer of a transparent crystalline polymer having a second stretch temperature Ts.sub.2 greater than the Tg is superposed on the second surface of said core layer.
公开/授权文献
- US4648639A Apparatus and method for a security lock 公开/授权日：1987-03-10