发明名称 |
Method of manufacturing cellulose film, manufacturing apparatus, optical film, polarizing plate and liquid crystal display |
摘要 |
An optical film characterized by a high degree of flatness that can be used as a phase difference film of a liquid crystal display, and a method for manufacturing this optical film according to melt-casting film forming method. A melt including a cellulose resin is extruded onto a rotary support member 5 (cooling roll) from a flow casting die 4. A rotary pinch member 6 (touch roll) is energized to the rotary support member 5, and a nip is formed between them. When the melt is sandwiched and pressed by the nip, a die line and irregularity in thickness are removed. The linear pressure of the rotary pinch member 6 and the temperature of the melt immediately before the melt is sandwiched and pressed by the nip are set within a predetermined range, whereby effective correction of the film flatness is achieved.
|
申请公布号 |
US8349228(B2) |
申请公布日期 |
2013.01.08 |
申请号 |
US20060614210 |
申请日期 |
2006.12.21 |
申请人 |
KONICA MINOLTA OPTO, INC.;KAZAMA KENICHI |
发明人 |
KAZAMA KENICHI |
分类号 |
B29D7/01 |
主分类号 |
B29D7/01 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|