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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 11084187 B1

PDFFull Text
Date of Patent:
Aug. 10, 2021

Filed:

Apr. 15, 2016

Fiber-reinforced composite material molded article and method for manufacturing same

Applicant:

Mitsubishi Chemical Corporation, Chiyoda-ku, JP;

Inventors:

Masao Tomioka, Tokyo, JP;

Takeshi Ishikawa, Tokyo, JP;

Akinobu Sasaki, Tokyo, JP;

Assignee:

Mitsubishi Chemical Corporation, Chiyoda-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Joanna Pleszczynska

Int. Cl.
CPC ...
B32B 5/02 (2006.01); B32B 5/26 (2006.01); B32B 5/28 (2006.01); B32B 9/00 (2006.01); B32B 27/04 (2006.01); B29C 43/20 (2006.01); B29C 45/14 (2006.01); B29C 70/08 (2006.01); C08J 5/04 (2006.01); B29B 15/08 (2006.01); B29C 70/48 (2006.01); B29C 37/00 (2006.01); B29C 65/52 (2006.01); B29C 70/34 (2006.01); B29C 45/56 (2006.01); B29C 65/02 (2006.01);
U.S. Cl.
CPC ...
B29B 15/08 (2013.01); B29C 37/0078 (2013.01); B29C 43/20 (2013.01); B29C 45/14 (2013.01); B29C 45/14631 (2013.01); B29C 65/52 (2013.01); B29C 70/081 (2013.01); B29C 70/34 (2013.01); B29C 70/48 (2013.01); B29C 45/561 (2013.01); B29C 65/02 (2013.01); C08J 5/042 (2013.01); C08J 2323/12 (2013.01);
Abstract

The purpose of the present invention is to obtain a fiber-reinforced composite material molded article having high adhesive strength in a boundary portion between an insert portion comprising a fiber-reinforced resin substrate and an integrally molded portion molded integrally with the insert portion. A fiber-reinforced composite material molded article () containing reinforcing fibers and a thermoplastic resin and being provided with a first layer (), a second layer (), and a third layer () in this order, the thickness of each layer, the ratio of the total volume of reinforcing fibers (x) having a fiber length of 3 mm to less than 100 mm with respect to the total volume of reinforcing fibers present in the layer, the ratio of the total volume of reinforcing fibers (y) having a fiber length of 0.02 mm to less than 3 mm with respect to the total volume of reinforcing fibers present in the layer, and the volume content of fibers in each layer being controlled so as to be in specific ranges.

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