| 发明名称 |
Polyester film |
| 摘要 |
A polyester film having an opaque first polyester layer having an optical density greater than 2.0 and a second white polyester layer, wherein the film is made by coextrusion. The opaque first layer preferably contains carbon black. The film is suitable for use as a base for a photographic sheet.
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| 申请公布号 |
US6436219(B1) |
申请公布日期 |
2002.08.20 |
| 申请号 |
US20000242248 |
申请日期 |
2000.05.05 |
| 申请人 |
DUPONT TEIJIN FILMS U.S. LIMITED PARTNER |
发明人 |
FRANCIS JOHN;HIGGINS DAVID EDWARD |
| 分类号 |
B32B27/36;C08J5/18;C08J7/04;G03C1/795;G03C8/52;(IPC1-7):B32B27/18;B32B27/20;B32B31/30 |
主分类号 |
B32B27/36 |
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