发明名称 |
Unit for production of tubular resin film |
摘要 |
A manufacturing apparatus is provided for manufacturing a tubular resin film of high quality and little thickness variations, which is stretched and given an orientation, and suitable as retardation film or the like. It comprises a stretching section (6) for stretching the tubular resin film (20), and a maintaining section (7) for maintaining a shape of said tubular resin film (20) stretched. Further, said stretching section (6) is arranged to apply a stretching force to said tubular resin film for longitudinally and/or circumferentially stretching said tubular resin film (20).
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申请公布号 |
US7625194(B2) |
申请公布日期 |
2009.12.01 |
申请号 |
US20030543612 |
申请日期 |
2003.12.24 |
申请人 |
SUMITOMO BAKELITE COMPANY, LTD. |
发明人 |
YOSHIDA SHINGO;AKAZAWA SEIGOU;AKAZAWA, LEGAL REPRESENTATIVE KEIKO;MARUYAMA TOYOTARO;TAKEUCHI TAKESHI;FURUHARA SHIGEYOSHI;IKENAGA MASANORI;NAKAO TOSHIO |
分类号 |
B29C47/20;B29C47/90;B29C47/00;B29C55/22;B29C55/24;B29C55/26;B29L7/00;B29L23/00 |
主分类号 |
B29C47/20 |
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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