发明名称 |
POLYVINYL ALCOHOL FILM ROLL |
摘要 |
Provided are: a roll obtained by winding a PVA film that is at least 2,000 m long and no more than 45 μm thick, wherein the average gap between adjacent films is no more than 5 μm; and a method for manufacturing a roll obtained by winding a PVA film that is at least 2,000 m long and no more than 45 μm thick, wherein a touch-winding scheme is employed, the pressure between a film roll and a contact roll is 3-30N per meter of axial length of the film roll, and the winding speed is no more than 30 m/min. Thereby provided is a PVA film roll that has excellent external appearance and does not readily become wrinkled or eccentric even when the PVA film is thin and has a high winding length. |
申请公布号 |
WO2017038955(A1) |
申请公布日期 |
2017.03.09 |
申请号 |
WO2016JP75731 |
申请日期 |
2016.09.01 |
申请人 |
KURARAY CO., LTD. |
发明人 |
SATO, Naoto;SASAI, Kouji;HADA, Hideyuki;KAMEOKA, Seiji;HAMAOKA, Takashi;YAMAMOTO, Shota |
分类号 |
B65H75/00;B65H18/16;G02B5/30 |
主分类号 |
B65H75/00 |
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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