发明名称 |
METHOD FOR MANUFACTURING FILM |
摘要 |
PROBLEM TO BE SOLVED: To manufacture an excellent film having no line-like defect on its surface by means of a molten extrusion method. SOLUTION: A film is manufactured by melting and extruding a thermoplastic resin by use of an extruder and a die wherein surface roughness Ry of a connecting pipe portion from the outlet of the extruder to the die is not more than 1.0S, surface roughness Ry of a die lip portion is not more than 0.5S, surface roughness Ry of the flow portion of the die is not more than 0.6S, surface roughness Ry of a die manifold portion is not more than 0.7S and surface roughness Ry of a die supply portion is not more than 0.8S respectively. |
申请公布号 |
JP2002331564(A) |
申请公布日期 |
2002.11.19 |
申请号 |
JP20010141396 |
申请日期 |
2001.05.11 |
申请人 |
KANEGAFUCHI CHEM IND CO LTD |
发明人 |
KONOO YUTAKA |
分类号 |
B29C47/12;B29C47/36;B29K101/12;B29L7/00;C08F210/00;C08F212/04;C08F220/42;C08F222/40;C08L23/02;C08L25/00;C08L33/18;C08L35/00;C08L101/02;(IPC1-7):B29C47/12 |
主分类号 |
B29C47/12 |
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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