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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9034138 B1

PDFFull Text
Date of Patent:
May. 19, 2015

Filed:

Oct. 23, 2013

Method for manufacturing polarizing plate

Applicant:

Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;

Inventors:

Mie Nakata, Ibaraki, JP;

Tetsurou Takeda, Ibaraki, JP;

Shunsuke Murayama, Ibaraki, JP;

Tomohiro Yamashita, Ibaraki, JP;

Assignee:

NITTO DENKO CORPORATION, Ibaraki-shi, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

John Goff

Int. Cl.
CPC ...
B29C 65/00 (2006.01); B32B 1/00 (2006.01); G02B 5/30 (2006.01); B29C 65/48 (2006.01); B32B 7/00 (2006.01); B32B 37/00 (2006.01); B29C 65/52 (2006.01); B29L 11/00 (2006.01); B32B 37/12 (2006.01); B29C 65/14 (2006.01);
U.S. Cl.
CPC ...
B32B 1/00 (2013.01); G02B 5/305 (2013.01); G02B 5/3041 (2013.01); G02B 5/3033 (2013.01); B29C 65/48 (2013.01); B29C 65/52 (2013.01); B29C 65/4825 (2013.01); B29C 66/1122 (2013.01); B29C 66/342 (2013.01); B29C 66/45 (2013.01); B32B 7/00 (2013.01); B29C 66/7315 (2013.01); B29C 66/73365 (2013.01); B29C 66/7338 (2013.01); B29C 66/81457 (2013.01); B29C 66/83413 (2013.01); B29C 66/929 (2013.01); B29C 66/939 (2013.01); B29L 2011/00 (2013.01); B29C 65/482 (2013.01); B29C 65/4865 (2013.01); B32B 2307/42 (2013.01); B32B 37/003 (2013.01); B32B 37/12 (2013.01); B32B 2307/412 (2013.01); B32B 2309/06 (2013.01); B29C 66/934 (2013.01); B29C 65/1403 (2013.01); B29C 65/4845 (2013.01); B29C 66/83415 (2013.01);
Abstract

A method for manufacturing a polarizing plate, the method comprising bonding a first transparent protective film and a second transparent protective film to both sides of a polarizer with an adhesive layer interposed between the polarizer and each of the first and second transparent protective films, wherein the first and second transparent protective films have different elasticities (elastic modulus×thickness (μm)), the three films are pressure-bonded by being simultaneously allowed to pass between a pair of rolls, a direction in which the polarizer is fed and allowed to pass between the pair of rolls is inclined toward the high-elasticity film. The polarizing plate obtained by the method can be suppressed the occurrence of bubbles between the polarizer and the transparent protective films.

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