公开(公告)号：US20150005434A1

公开(公告)日：2015-01-01

申请号：US14377392

申请日：2013-02-05

Applicant: Toray Industries, Inc.

Inventor： Katsuhiro Miyoshi ,  Takashi Shimada ,  Takafumi Hashimoto ,  Tetsuya Ohara ,  Tomonori Iizuka ,  Shoji Nakashima

IPC: C08K7/06

CPC classification number: C08K7/06 ,  C08J5/042 ,  C08J2323/12 ,  C08K2201/004

Abstract: A carbon fiber composite material includes the material is made of carbon fibers and a thermoplastic resin; the proportion Y, relative to the total weight of carbon fibers, of carbon fiber bundles for which Mn/(Ln×D) is 8.5×10−1 (mg/mm2) or more, is 30≦Y

Abstract translation: 碳纤维复合材料包括由碳纤维和热塑性树脂制成的材料; Mn /（Ln×D）为8.5×10-1（mg / mm2）以上的碳纤维束的比例Y相对于碳纤维的总重量为30重量％，Y <90重量％ ; 碳纤维束的Mn / Ln的平均值X为1.1×10 -2＆nlE; X＆lt; N1; 8.1×10 -2（mg / mm）; Y满足Y≥100X+ 30，其中Mn：碳纤维束的重量，Ln：碳纤维的纤维长度，D：碳纤维的纤维直径。 碳纤维复合材料结合了高流动性和机械性能，机械性能的变化很小，并且对于诸如肋骨的小零件，显示出优异的碳纤维适应性。

公开(公告)号：US11794419B2

公开(公告)日：2023-10-24

申请号：US17598504

申请日：2020-03-09

Applicant: Toray Industries, Inc.

Inventor： Yusuke Yamanaka ,  Takafumi Hashimoto ,  Tetsuya Motohashi ,  Yasukazu Ono

IPC: B29C70/12 ,  B29B15/10 ,  B29C70/42 ,  C08J5/04 ,  B29K101/10 ,  B29K105/12 ,  B29K307/04

CPC classification number: B29C70/12 ,  B29B15/105 ,  B29C70/42 ,  C08J5/042 ,  B29K2101/10 ,  B29K2105/12 ,  B29K2307/04

Abstract: A fiber-reinforced resin molding material molded product includes a fiber-reinforced resin molding material prepared by impregnating chopped fiber bundles obtained by cutting a reinforcing fiber bundle with a matrix resin, wherein in a region excluding 30 mm from an edge of the molded product, when an arbitrary rectangular region having an area of 40 mm2 or more and defined by a thickness of the molded product and a width in a direction perpendicular to a thickness direction of the molded product is set in a cross section in an arbitrary thickness direction of the molded product, with respect to a bundle thickness of the chopped fiber bundles present in the set rectangular region.

公开(公告)号：US20230091427A1

公开(公告)日：2023-03-23

申请号：US17909349

申请日：2021-03-15

Applicant: Toray Industries, Inc.

Inventor： Yusuke Yamanaka ,  Takafumi Hashimoto ,  Yasukazu Ono ,  Tadashi Watanabe

IPC: B65H69/06

Abstract: A jointed strand includes a superposed portion in which a first strand end in which fibers are oriented in one direction and a second strand end in which fibers are oriented in one direction are superposed; and a joint portion in which fibers of the first strand and the second strand are interlaced at the superposed portion, wherein the joint portion has a slit extending in a fiber orientation direction and a joint spot adjacent to the slit at one location or a plurality of locations aligned in a direction orthogonal to the fiber orientation direction, and monofilaments of the first strand and the second strand are interlaced at the joint spot.

公开(公告)号：US11371171B2

公开(公告)日：2022-06-28

申请号：US16310165

申请日：2017-06-06

Applicant: Toray Industries, Inc.

Inventor： Tetsuya Motohashi ,  Takafumi Hashimoto ,  Katsuhiro Miyoshi ,  Chiasa Sato

IPC: B29C70/54 ,  D02J1/18 ,  C08J5/06 ,  C08J5/24 ,  B29C70/02 ,  B29B11/00 ,  B29B15/12 ,  B65H51/005 ,  B65H54/02 ,  B65H73/00

Abstract: A production method for a separated fiber bundle includes at least: [A] a partial separation step for obtaining a partially separated fiber bundle in which separation-processed parts, each separated into a plurality of bundles, and not-separation-processed parts are alternately formed along the lengthwise direction of a fiber bundle comprising a plurality of single fibers; and [B] a cutting step for cutting the not-separation-processed parts of the partially separated fiber bundle formed in the step [A] along the lengthwise direction of the fiber bundle. A separated fiber bundle produced by the method, a fiber-reinforced resin molding material that uses the separated fiber bundle, and a production method for the fiber-reinforced resin molding material.

公开(公告)号：US11168190B2

公开(公告)日：2021-11-09

申请号：US16341054

申请日：2017-09-28

Applicant: Toray Industries, Inc.

Inventor： Tetsuya Motohashi ,  Takafumi Hashimoto

IPC: C08J5/24 ,  B29B15/08 ,  D04H1/72 ,  D04H1/732 ,  C08J5/04 ,  B29K307/04 ,  B29K105/12

Abstract: A random mat includes a chopped fiber bundle [A] obtained by obliquely cutting a partially separated fiber bundle [B] prepared by alternately forming separation-processed sections, each of which is separated into a plurality of bundles, and not-separation-processed sections, along the lengthwise direction of a fiber bundle, wherein the total cross-sectional area of reinforcing fibers exhibits a specific change amount between both tips of the chopped fiber bundle [A]; a production method produces the random mat; and a fiber-reinforced resin molding material uses the random mat.

公开(公告)号：US11097448B2

公开(公告)日：2021-08-24

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 ,  B29K307/04

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：US20190263625A1

公开(公告)日：2019-08-29

申请号：US16307678

申请日：2017-06-01

Applicant: Toray Industries, Inc.

Inventor： Tetsuya Motohashi ,  Takafumi Hashimoto ,  Yasumoto Noguchi ,  Yoshihiro Kawahara ,  Tamotsu Suzuki ,  Chiasa Sato

IPC: B65H51/005 ,  B29B15/10 ,  D02J1/18 ,  D02J1/06 ,  D06H3/02 ,  D06H7/02 ,  D04H1/64 ,  D04H1/732 ,  C08J5/04 ,  C08J5/18 ,  C08J5/24

Abstract: A partially separated fiber bundle includes separation-processed sections, each divided into a plurality of bundles of at least three bundles, and not-separation-processed sections, that are alternately formed along the lengthwise direction of a fiber bundle that comprises a plurality of single fibers. The partially separated fiber bundle is characterized in that, at any width-direction cross-section taken along the lengthwise direction thereof, a rate of single fibers contained in a region at which adjacent divided fiber bundles are joined by a not-separation-processed part is 67% or less relative to the total single fibers in the width-direction cross-section.

公开(公告)号：US20190091944A1

公开(公告)日：2019-03-28

申请号：US16085018

申请日：2017-02-23

Applicant: Toray Industries, Inc.

Inventor： Tetsuya Motohashi ,  Takafumi Hashimoto ,  Chiasa Sato ,  Ichiro Taketa

IPC: B29C70/14 ,  B29C70/54 ,  B29C70/46 ,  B29B11/02

Abstract: A molded article of a fiber-reinforced resin contains at least a bundled aggregate [A] of discontinuous reinforcing fibers and a matrix resin [M], wherein the average layer thickness h in the molded article of the fiber-reinforced resin is 100 μm or less and the CV value of the average layer thickness h is 40% or less; and a compression molding method therefor. It is possible to reliably and greatly reduce the occurrence of stress concentration in the molded article and to thereby achieve higher mechanical properties and further reduce variation in the mechanical properties.

公开(公告)号：US20180094368A1

公开(公告)日：2018-04-05

申请号：US15562510

申请日：2016-03-17

Applicant: Toray Industries, Inc.

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

IPC: D04H1/4242 ,  C08J5/04 ,  C08K3/04 ,  C08K3/013

CPC classification number: D04H1/4242 ,  C08J5/042 ,  C08J5/06 ,  C08J2300/22 ,  C08J2300/24 ,  C08J2363/10 ,  C08K3/013 ,  C08K3/046

Abstract: A fiber-reinforced resin forming material contains at least a matrix resin and bundled aggregates of discontinuous reinforcing fibers, wherein: the bundled aggregates include both reinforcing fiber aggregates A having a shape formed by cutting after having performed a splitting treatment to completely split the strands of continuous reinforcing fibers into a plurality of bundles of strands, and reinforcing fiber aggregates B1 having a shape that includes unsplit parts where splitting treatment was inadequate and/or reinforcing fiber aggregates B2 having a shape not subjected to splitting treatment; and both the ratio of the weight of the reinforcing fiber aggregates B1 with respect to the total weight of reinforcing fibers in the fiber-reinforced resin forming material, and the ratio of the total weight of the reinforcing fiber aggregates B1 and the reinforcing fiber aggregates B2 with respect to the total weight of reinforcing fibers in the fiber-reinforced resin forming material, are 50-95%.

公开(公告)号：US20150292146A1

公开(公告)日：2015-10-15

申请号：US14435831

申请日：2013-10-15

Applicant: TORAY INDUSTRIES, INC.

Inventor： Katsuhiro Miyoshi ,  Takashi Shimada ,  Takafumi Hashimoto ,  Tetsuya Ohara ,  Yoshihiro Naruse

IPC: D06M15/59

CPC classification number: D06M15/59 ,  B29B11/16 ,  B29C70/12 ,  B29K2101/12 ,  B29K2307/04 ,  C08J5/042 ,  C08J5/06 ,  C08K7/06 ,  D06M2101/40

Abstract: A stampable sheet includes discontinuous carbon fibers and a thermoplastic resin as a matrix resin, wherein viscosity η of the stampable sheet in a state where the matrix resin in the stampable sheet is molten is η0≦η

Abstract translation: 可冲压片材包括不连续碳纤维和作为基质树脂的热塑性树脂，其中粘度和等级 在冲压片材中的基质树脂熔融的状态下，0＆nlE＆lt; eegr＆lt; 0 exp（0.20Vf）（Pa·s）和精制碳纤维束（A）的比Z） 其中与冲压片材中的碳纤维的总重量相比，Mn /（Ln×D）小于8.5×10-1（mg / mm2）为10＆lt; NlE; Z <70（wt％）。 该构造使得可以提供具有受控范围的条件的冲压片材，并且在成型期间实现高流动性和成型后的高机械性能。