发明授权
- 专利标题： Laminated polyester film for magnetic recording medium
- 专利标题（中）： 用于磁记录介质的层压聚酯薄膜
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申请号： US551252申请日： 1995-10-31
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公开(公告)号： US5702794A公开(公告)日： 1997-12-30
- 发明人: Masahiro Hosoi , Yasuhiko Saito , Yasuhiro Saeki , Masami Etchu
- 申请人： Masahiro Hosoi , Yasuhiko Saito , Yasuhiro Saeki , Masami Etchu
- 申请人地址： JPX Osaka
- 专利权人： Teijin Limited
- 当前专利权人： Teijin Limited
- 当前专利权人地址： JPX Osaka
- 优先权： JPX4-337169 19921217
- 主分类号： B29C55/12
- IPC分类号： B29C55/12 ; B29K67/00 ; B29L7/00 ; B29L9/00 ; B32B27/36 ; C08G63/181 ; C08G63/189 ; C09D123/08 ; G11B5/73 ; G11B5/735 ; G11B5/738 ; B32B27/08 ; B32B27/30 ; B32B27/40
摘要：
A magnetic recording tape or disk formed from a biaxially oriented laminated polyester base film which comprises a layer (A) of a polyester consisting essentially of 2,6-naphthalenedicarboxylic acid and ethylene glycol components and a layer (B) of a copolyester consisting essentially of 2,6-naphthalenedicarboxylic acid, ethylene glycol, and diethylene glycol components, wherein the copolyester contains 1-5% by weight of the diethylene glycol component, based on the weight of the layer (B) copolyester, layer (B) being present on one or both surfaces of layer (A).
公开/授权文献
- USD323651S Television set 公开/授权日：1992-02-04