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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 10703019 B1

PDFFull Text
Date of Patent:
Jul. 07, 2020

Filed:

Mar. 09, 2017

Resin-impregnated fiber bundle, compression molded article, and a method for producing the same

Applicant:

Daicel Polymer Ltd., Minato-ku, Tokyo, JP;

Inventors:

Shigeyuki Kosaka, Tokyo, JP;

Satoru Shibata, Tokyo, JP;

Assignee:

DAICEL POLYMER LTD., Minato-ku, Tokyo, JP;

Attorney:

Flynn Thiel, P.C.

Primary Examiner:

Brent T O'Hern

Int. Cl.
CPC ...
B29B 9/14 (2006.01); B29B 9/06 (2006.01); B29C 43/00 (2006.01); B29B 7/90 (2006.01); C08L 101/00 (2006.01); C08J 5/04 (2006.01); B29C 43/34 (2006.01); C08J 5/24 (2006.01); B29K 105/06 (2006.01); B29C 43/02 (2006.01); B29K 307/04 (2006.01); B29C 43/52 (2006.01); B29K 23/00 (2006.01); B29K 309/08 (2006.01);
U.S. Cl.
CPC ...
B29B 9/14 (2013.01); B29B 7/90 (2013.01); B29B 9/06 (2013.01); B29C 43/003 (2013.01); B29C 43/006 (2013.01); B29C 43/34 (2013.01); C08J 5/04 (2013.01); C08J 5/24 (2013.01); C08L 101/00 (2013.01); B29C 43/02 (2013.01); B29C 43/52 (2013.01); B29K 2023/12 (2013.01); B29K 2105/06 (2013.01); B29K 2307/04 (2013.01); B29K 2309/08 (2013.01); C08J 2323/12 (2013.01);
Abstract

A resin-impregnated fiber bundle that can provide a molded article with a high surface impact strength is prepared by impregnating and integrating 100 parts by mass of a bundle of a fiber material (A) with 25 to 300 parts by mass of a thermoplastic resin (B). The fiber bundle has a flattened shape with a lateral cross-sectional shape having a major axis and a minor axis (length of the major axis>length of the minor axis). An average length (D1) of the major axis is 0.5 to 2.0 mm. An average flatness ratio (D1/D2), determined from the average length (D1) of the major axis and an average length (D2) of the minor axis, is 1.2 to 8.01. The fiber bundle has a length (L) of 11 to 50 mm, a ratio (L/D1) between L and D1 is 10 to 50, and a bulk density is 0.1 to 0.4 g/cm.

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