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Title:
MANUFACTURING METHOD OF CELLULOSE ACYLATE FILM AND OPTICAL COMPENSATION FILM FOR LIQUID CRYSTAL DISPLAY PANEL MANUFACTURED BY USING IT
Document Type and Number:
Japanese Patent JP2006334841
Kind Code:
A
Abstract:

To provide a manufacturing method of a cellulose acylate film capable of forming the cellulose acylate film having no streak trouble and enhanced in thickness precision and capable of obtaining high optical characteristics by stretching the formed cellulose acylate film.

A molten cellulose acylate resin is extruded in a sheetlike form from a die 24 to be supplied to the nip between a pair of polishing rollers 26 and 28, and the sheetlike extrudate is cooled while held between the pair of polishing rollers 26 and 28 under pressure to form the cellulose acylate film 12. The formed cellulose acylate film 12 is stretched by 1-2.5 times in its longitudinal and lateral directions in a longitudinal stretching process part 16 and a lateral stretching process part 18.


Inventors:
FUJITA AKIHIDE
OTOSHI MASAAKI
NAKAI SHINICHI
Application Number:
JP2005160002A
Publication Date:
December 14, 2006
Filing Date:
May 31, 2005
Export Citation:
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Assignee:
FUJIFILM HOLDINGS CORP
International Classes:
B29C48/08; B29C48/305; B29C48/395; B29C55/02; C08J5/18; G02B5/30; B29K1/00; B29L7/00; B29L11/00; C08L1/08
Domestic Patent References:
JP2000280315A2000-10-10
JP2000084995A2000-03-28
JP2004155101A2004-06-03
JP2002311240A2002-10-23
JP2000263642A2000-09-26
JP2005104149A2005-04-21
Attorney, Agent or Firm:
Kenzo Matsuura



 
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