发明名称 |
Method for forming multilayer sheets and extrusion die therefor |
摘要 |
Broad parts are formed on at least one passage including a passage for forming the thinnest layer among passages for respective resin layers of a multilayer sheet at an upstream side of a confluence. In the broad parts, clearances become larger to both ends of the passage along the width thereof.
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申请公布号 |
US6203742(B1) |
申请公布日期 |
2001.03.20 |
申请号 |
US19980137833 |
申请日期 |
1998.08.21 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
KEGASAWA TADAHIRO;OZAKI KAZUO;OGAWA SHOTARO;KATSUMOTO RYUICHI;USUI HIDEAKI |
分类号 |
B29C47/06;B29C47/14;B29C47/16;B29L7/00;B29L9/00;(IPC1-7):B29C47/16 |
主分类号 |
B29C47/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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