FIBER-REINFORCED RESIN MOLDING MATERIAL

Title:

FIBER-REINFORCED RESIN MOLDING MATERIAL

Document Type and Number:

WIPO Patent Application WO/2018/143068

Kind Code:

A1

Abstract:

A fiber-reinforced resin molding material which is configured from at least constituent elements (I) and (II) that are composed of fiber-reinforced thermoplastic resin sheets, and which is characterized in that: the constituent element (I) is obtained by having a resin contain a reinforcing fiber bundle (i) that has an average number n1 of fibers of 5,000 or less, an average fiber length Lf1 of from 10 mm to 100 mm (inclusive) and a number of fibers per unit width of 2,000/mm or less; the constituent element (II) is obtained by having a resin contain a reinforcing fiber bundle (ii) that has an average number n2 of fibers of 500 or more, an average fiber length Lf2 of 3 mm or more but less than 10 mm and a number of fibers per unit width of 2,000/mm or less; and the constituent elements (I) and (II) are laminated such that the constituent element (I) is exposed in the surface. Consequently, the present invention provides a fiber-reinforced resin molding material which has excellent fluidity during the molding and excellent mechanical characteristics, especially excellent tensile strength and bending strength.

Inventors:

SEIKE SATOSHI (JP)
TATEYAMA MASARU (JP)
FUSE MITSUKI (JP)

Application Number:

PCT/JP2018/002402

Publication Date:

August 09, 2018

Filing Date:

January 26, 2018

Export Citation:

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Assignee:

TORAY INDUSTRIES (JP)

International Classes:

B29B11/16; B29C70/08; B29C70/10; B29K101/12

Domestic Patent References:

WO2015115225A1	2015-08-06
WO2015108021A1	2015-07-23

Foreign References:

JP2017001264A	2017-01-05
JPH059301A	1993-01-19
JP2013176984A	2013-09-09
JP2018035274A	2018-03-08
JP2000141502A	2000-05-23
JP2003080519A	2003-03-19
JP2014028510A	2014-02-13
JPH0647737A	1994-02-22
JP5985085B2	2016-09-06

Other References: