| 发明名称 |
MANUFACTURING METHOD OF POLYVINYL ALCOHOL FILM FOR OPTICAL USE |
| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a polyvinyl alcohol film which has little color shade and is useful as a raw material for production of a polarizing film for liquid crystal display of high quality. <P>SOLUTION: Water content of the polyvinyl alcohol film of ≥2m width is adjusted while giving the film tension of 10 to 50 N/m in a flow direction of the film and then the film is drawn. <P>COPYRIGHT: (C)2004,JPO |
| 申请公布号 |
JP2004020635(A) |
申请公布日期 |
2004.01.22 |
| 申请号 |
JP20020171844 |
申请日期 |
2002.06.12 |
| 申请人 |
KURARAY CO LTD |
发明人 |
ISOZAKI TAKANORI;HAYASHI TETSUSHI |
| 分类号 |
G02B5/30;B29C55/02;B29K29/00;B29L7/00;G02F1/1335 |
主分类号 |
G02B5/30 |
| 代理机构 |
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