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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 11007675 B1

PDFFull Text
Date of Patent:
May. 18, 2021

Filed:

Feb. 15, 2017

Discontinuous fiber-reinforced composite material

Applicant:

Toray Industries, Inc., Tokyo, JP;

Inventors:

Katsuhiro Miyoshi, Nagoya, JP;

Takafumi Hashimoto, Nagoya, JP;

Tetsuya Motohashi, Nagoya, JP;

Assignee:

Toray Industries, Inc., Tokyo, JP;

Attorney:

DLA Piper LLP (US)

Primary Examiner:

Camie S Thompson

Int. Cl.
CPC ...
B29B 15/12 (2006.01); B29C 70/10 (2006.01); B29B 11/16 (2006.01); B29C 45/00 (2006.01); B29C 65/00 (2006.01); B29C 70/14 (2006.01); B29C 70/20 (2006.01); B29K 101/10 (2006.01); B29K 101/12 (2006.01); B29K 105/12 (2006.01); B29C 70/54 (2006.01);
U.S. Cl.
CPC ...
B29B 15/122 (2013.01); B29B 11/16 (2013.01); B29C 45/0005 (2013.01); B29C 66/73921 (2013.01); B29C 70/10 (2013.01); B29C 70/14 (2013.01); B29C 70/202 (2013.01); B29C 70/543 (2013.01); B29K 2101/10 (2013.01); B29K 2101/12 (2013.01); B29K 2105/12 (2013.01);
Abstract

A discontinuous fiber-reinforced composite material including a discontinuous reinforcing fiber aggregate of a discontinuous reinforcing fiber having a number average fiber length of 3 to 100 mm and a matrix resin, the discontinuous reinforcing fiber aggregate including a plurality of discontinuous reinforcing fiber bundles having a predetermined number of unidirectionally-bundled single yarns of the discontinuous reinforcing fiber, wherein the discontinuous reinforcing fiber bundle has a cut surface inclined at a predetermined angle with respect to an orientation direction of the single yarn of the discontinuous reinforcing fiber bundle and has different fiber bundle lengths defined as a distance between both ends along the orientation direction of the single yarn of the discontinuous reinforcing fiber bundle, and the longer the fiber bundle length of the discontinuous reinforcing fiber bundle is, the smaller a tip angle defined as an acute angle at an end of a two-dimensional plane projection of the discontinuous reinforcing fiber bundle is.

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