logo

For the Inventor, By the Inventor

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 10836112 B1

PDFFull Text
Date of Patent:
Nov. 17, 2020

Filed:

Feb. 08, 2017

Laminate of aramid paper sheet and polyimide film and method for producing same

Applicant:

Dupont Teijin Advanced Papers (Japan), Ltd., Tokyo, JP;

Inventors:

Koichi Ukigaya, Tokyo, JP;

Tatsushi Fujimori, Tokyo, JP;

Shinji Naruse, Tokyo, JP;

Chihiro Kondo, Tokyo, JP;

Yasunori Tanaka, Tokyo, JP;

Assignee:

DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD., Tokyo, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Mark A Osele

Assistant Examiner:

Nickolas R Harm

Int. Cl.
CPC ...
B29C 65/00 (2006.01); B29C 65/02 (2006.01); B32B 27/34 (2006.01); D21H 27/30 (2006.01); D21H 25/04 (2006.01); B32B 37/06 (2006.01); D21H 13/26 (2006.01); B32B 37/00 (2006.01); B29C 65/18 (2006.01); B29C 65/44 (2006.01);
U.S. Cl.
CPC ...
B29C 65/02 (2013.01); B32B 27/34 (2013.01); B32B 37/06 (2013.01); D21H 13/26 (2013.01); D21H 25/04 (2013.01); D21H 27/30 (2013.01); B29C 65/18 (2013.01); B29C 65/44 (2013.01); B29C 66/1122 (2013.01); B29C 66/45 (2013.01); B29C 66/71 (2013.01); B29C 66/712 (2013.01); B29C 66/73117 (2013.01); B29C 66/73132 (2013.01); B29C 66/73521 (2013.01); B29C 66/83413 (2013.01); B29C 66/919 (2013.01); B29C 66/91421 (2013.01); B29C 66/91941 (2013.01); B29C 66/91943 (2013.01); B29C 66/929 (2013.01); B32B 37/0053 (2013.01); B32B 2037/0092 (2013.01); B32B 2250/03 (2013.01); B32B 2250/24 (2013.01); B32B 2307/206 (2013.01); B32B 2307/306 (2013.01); B32B 2309/02 (2013.01); B32B 2309/12 (2013.01);
Abstract

Provided is a method for producing a laminate, comprising laminating an aramid paper sheet and a polyimide film together by performing heating and pressurizing process under conditions of a temperature of 275 to 320° C. and a pressure of 50 to 400 kgf/cm. In the present invention, an aramid paper sheet-polyimide film laminate with excellent heat resistance, electrical properties, chemical resistance, mechanical properties, and the like can be manufactured by laminating the aramid paper sheet and the polyimide film in a simple method without impairing their properties.

Find Patent Forward Citations

Loading…