Title:
OPTICAL METHACRYLIC RESIN EXTRUSION PLATE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2006/046481
Kind Code:
A1
Abstract:
There is provided a methacrylic resin extrusion plate formed by a mixture having an apparent density of 0.80 g/ml or above prepared by mixing methacrylic resin polymer of a definite shape having an apparent density of 0.63 g/ml to 0.78 g/ml and methacrylic resin polymer of an indefinite shape having an apparent density of 0.55 g/ml to 0.63 g/ml. The plate thickness accuracy in the width direction is controlled to be within ± 1.0% of the average plate thickness. The methacrylic resin extrusion plate for a light guide plate is preferably used for office automation devices such as a personal computer and a word processor, display devices used for various monitors displaying an image signal such as a panel monitor and a television monitor, display devices used for indoor or outdoor illumination devices and sign boards.
Inventors:
KAMIYA SHUNJI (JP)
TSURUTA YOSHIKAZU (JP)
TSURUTA YOSHIKAZU (JP)
Application Number:
PCT/JP2005/019390
Publication Date:
May 04, 2006
Filing Date:
October 21, 2005
Export Citation:
Assignee:
ASAHI KASEI CHEMICALS CORP (JP)
KAMIYA SHUNJI (JP)
TSURUTA YOSHIKAZU (JP)
KAMIYA SHUNJI (JP)
TSURUTA YOSHIKAZU (JP)
International Classes:
B29C48/305; C08J5/18; C08L33/10; G02B6/00; G02F1/13357; B29C48/00; B29C48/07; B29K33/00; B29L7/00
Foreign References:
| JP2004237645A | 2004-08-26 | |||
| JP2004237585A | 2004-08-26 | |||
| JP2002120273A | 2002-04-23 | |||
| JP2003270447A | 2003-09-25 | |||
| JP2003234005A | 2003-08-22 | |||
| JP2003287626A | 2003-10-10 |
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