Title:
光学フィルムの製造方法、熱可塑性樹脂の成形方法
Document Type and Number:
Japanese Patent JP5428838
Kind Code:
B2
Abstract:
To provide a method for molding a thermoplastic resin by a melting method by which foreign matter contamination can be suppressed without using a filter of high filtration accuracy and without reducing productivity.
This method for producing an optical film is characterized in that at least one kind of thermoplastic resins is subjected to a process for mixing/pulverizing the resin to average particle size of 50 μm or below and then is subjected to melting extrusion molding while maintaining the resin at a temperature of its glass transition point Tg-50°C or below.
COPYRIGHT: (C)2011,JPO&INPIT
Inventors:
Kei Shimizu
Kenzo Kasahara
Manabu Matsuoka
Kenzo Kasahara
Manabu Matsuoka
Application Number:
JP2009290328A
Publication Date:
February 26, 2014
Filing Date:
December 22, 2009
Export Citation:
Assignee:
Konica Minolta Co., Ltd.
International Classes:
B29B13/10; B29C47/82; B29C48/305; B29L7/00
Domestic Patent References:
| JP2008137366A | ||||
| JP2006346942A | ||||
| JP60009710A | ||||
| JP7261458A |
Attorney, Agent or Firm:
Hatta International Patent Corporation
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