公开(公告)号：US20190084186A1

公开(公告)日：2019-03-21

申请号：US16084373

申请日：2017-02-23

Applicant: Toray Industries, Inc.

Inventor： Tetsuya Motohashi ,  Takafumi Hashimoto ,  Katsuhiro Miyoshi ,  Tamotsu Suzuki ,  Yasumoto Noguchi

IPC: B29B11/16 ,  B29C70/12

Abstract: A fiber-reinforced resin molding material containing at least bundled aggregates [A] of discontinuous reinforcing fibers and a matrix resin [M], wherein each of the bundled aggregates [A] is obtained by cutting a partially-separated fiber bundle, prepared by forming separation treatment sections separated into a plurality of bundles and non-separation treatment sections alternately along a lengthwise direction of a fiber bundle including a plurality of single fibers, at an angle θ (0°

公开(公告)号：US20180001580A1

公开(公告)日：2018-01-04

申请号：US15545076

申请日：2015-11-12

Applicant: Toray Industries, Inc.

Inventor： Katsuhiro Miyoshi ,  Takafumi Hashimoto ,  Tetsuya Motohashi ,  Kenta Bamba

IPC: B29C70/50 ,  B29C70/14 ,  B29B11/16

CPC classification number: B29C70/508 ,  B29B11/16 ,  B29C70/12 ,  B29C70/14 ,  B29C70/506

Abstract: A reinforcing fiber composite material includes at least a matrix resin and discontinuous reinforcing fibers which include discontinuous reinforcing fiber aggregates, wherein the discontinuous reinforcing fibers include at least 5 wt % of discontinuous reinforcing fiber aggregates (A) in each of which a most widened section, where the width of the discontinuous reinforcing fiber aggregate in a direction intersecting the alignment direction of the discontinuous reinforcing fibers is made greatest when the discontinuous reinforcing fiber aggregate is two-dimensionally projected, is present at a position excluding both ends of the discontinuous reinforcing fiber aggregate, and the aspect ratio (width of the discontinuous reinforcing fiber aggregate/thickness of the discontinuous reinforcing fiber aggregate) of the most widened section is 1.3 times or more the aspect ratio of at least one of the ends of the discontinuous reinforcing fiber aggregate.

公开(公告)号：US20170260345A1

公开(公告)日：2017-09-14

申请号：US15512333

申请日：2015-08-31

Applicant: Toray Industries, Inc.

Inventor： Kenta Bamba ,  Tetsuya Motohashi ,  Katsuhiro Miyoshi ,  Takafumi Hashimoto

IPC: C08J5/04 ,  C08J5/24

CPC classification number: C08J5/042 ,  C08J5/04 ,  C08J5/24 ,  C08J2335/02

Abstract: A fiber-reinforced resin molding material includes at least bundled discontinuous reinforcing fiber aggregates and matrix resin, wherein said bundled reinforcing fiber aggregates include both reinforcing fiber aggregates (A) which are formed by cutting continuous reinforcing fiber strands after fiber splitting, in which said strands are completely split into multiple bundles, and reinforcing fiber aggregates (B) having at least unsplit strand sections in which fiber splitting is incomplete, an incision substantially originating from fiber splitting is present at least at one of both end portions of said reinforcing fiber aggregates (B), and a ratio of the weight of said reinforcing fiber aggregates (B) to the total weight of reinforcing fibers in said material is 5-50%.