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公开(公告)号：US12030218B2
公开(公告)日：2024-07-09
申请号：US17287801
申请日：2019-10-30
Applicant: Toray Industries, Inc.
Inventor： Yasukazu Ono , Takafumi Hashimoto , Tetsuya Motohashi , Tadashi Watanabe
IPC: B29B11/16 , B29K105/12 , B29K101/10
CPC classification number: B29B11/16 , B29K2101/10 , B29K2105/12
Abstract: A fiber-reinforced resin molding material [C] includes a chopped fiber bundle [A] and a matrix resin [B], the material being characterized in that, when divided into n layers along the thickness direction of the fiber-reinforced resin molding material [C], the number-average fiber length [Lk] of the chopped fiber bundle [Ak] constituting each layer Fk (1≤k≤n) gradually increases from one outermost layer F1 of the fiber-reinforced resin molding material [C] toward the other outermost layer Fn. Also provided is a molded article obtained by molding the fiber-reinforced resin molding material. This fiber-reinforced resin molding material exhibits excellent flowability, and can exhibit excellent mechanical properties when made into a molded article.
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公开(公告)号：US20220176647A1
公开(公告)日：2022-06-09
申请号：US17598504
申请日：2020-03-09
Applicant: Toray Industries, Inc.
Inventor： Yusuke Yamanaka , Takafumi Hashimoto , Tetsuya Motohashi , Yasukazu Ono
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.
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公开(公告)号：US11162196B2
公开(公告)日：2021-11-02
申请号：US16310694
申请日：2017-06-01
Applicant: Toray Industries, Inc.
Inventor： Tetsuya Motohashi , Takafumi Hashimoto , Katsuhiro Miyoshi , Chiasa Sato
IPC: D02J1/18 , B29B15/12 , B65H51/005 , C08J5/24 , C08J5/06
Abstract: A partially separated fiber bundle includes separation-processed sections and not-separation-processed sections that are alternately formed along the lengthwise direction of a fiber bundle that includes a plurality of single fibers, wherein the separation-processed sections include a plurality of divided fiber bundles that have been divided by separation processing. The partially separated fiber bundle is characterized in that the numbers of single fibers of the divided fiber bundles in the separation-processed section are nonuniform.
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公开(公告)号：US11001012B2
公开(公告)日：2021-05-11
申请号：US16085018
申请日：2017-02-23
Applicant: Toray Industries, Inc.
Inventor： Tetsuya Motohashi , Takafumi Hashimoto , Chiasa Sato , Ichiro Taketa
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.
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公开(公告)号：US10688734B2
公开(公告)日：2020-06-23
申请号：US16079606
申请日：2017-02-15
Applicant: Toray Industries, Inc.
Inventor： Katsuhiro Miyoshi , Takafumi Hashimoto , Tetsuya Motohashi
Abstract: A fiber-reinforced material includes 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, the shorter the fiber bundle length of the discontinuous reinforcing fiber bundle, 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.
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Patent Agency Ranking
公开(公告)号：US10569986B2
公开(公告)日：2020-02-25
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 , C08J5/04 , C08J5/18 , C08J5/24 , D02J1/06 , D02J1/18 , D04H1/64 , D04H1/732 , D06H3/02 , D06H7/02 , B29K101/10
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.
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公开(公告)号：US20190054707A1
公开(公告)日：2019-02-21
申请号：US16079606
申请日：2017-02-15
Applicant: Toray Industries, Inc.
Inventor： Katsuhiro Miyoshi , Takafumi Hashimoto , Tetsuya Motohashi
Abstract: A fiber-reinforced material includes 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, the shorter the fiber bundle length of the discontinuous reinforcing fiber bundle, 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.
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公开(公告)号：US09850368B2
公开(公告)日：2017-12-26
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
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
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公开(公告)号：US20150353713A1
公开(公告)日：2015-12-10
申请号：US14763188
申请日：2014-02-19
Applicant: TORAY INDUSTRIES, INC.
Inventor： Katsuhiro Miyoshi , Takashi Shimada , Takafumi Hashimoto , Tetsuya Ohara , Yoshihiro Naruse
IPC: C08K7/06
CPC classification number: C08K7/06 , C08J5/042 , C08J2377/00 , D04H1/4242 , D04H1/60 , D04H1/74 , Y10T428/24994
Abstract: A stampable sheet includes a resin and carbon fiber sheet including fiber bundles of discontinuous carbon fibers, wherein the carbon fiber sheet includes fiber bundles having a bundle width of 50 μm or greater and opened fibers ranging from fiber bundles having a bundle width less than 50 μm to fibers obtained by opening to the single-fiber level. When the direction along which the opened fibers have been oriented most is a 0° direction and the range of from the 0° to 90° direction is divided into angular zones, the distribution curve showing the proportion of the number of fiber bundles in each angular zone to that in all angular zones and the distribution curve showing the proportion of the number of opened fibers in each angular zone to that in all angular zones are reverse to each other in terms of gradient of the 0° to 90° direction.
Abstract translation: 可冲压片材包括包含不连续碳纤维的纤维束的树脂和碳纤维片，其中碳纤维片包括束宽度为50μm或更大的纤维束，并且具有范围从束宽度小于50μm的纤维束开放的纤维 通过开放到单纤维水平获得的纤维。 当打开的纤维已经取向最多的方向是0°方向，并且从0°到90°方向的范围被分成角区时，分布曲线示出了每个角度的纤维束数量的比例 区域和所有角区域中的分布曲线，并且表示在每个角区域中的开放纤维的数量与所有角区域中的开纤量的比例的分布曲线相对于0°至90°方向的梯度而相反。
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公开(公告)号：US20210323196A1
公开(公告)日：2021-10-21
申请号：US17287801
申请日：2019-10-30
Applicant: Toray Industries, Inc.
Inventor： Yasukazu Ono , Takafumi Hashimoto , Tetsuya Motohashi , Tadashi Watanabe
IPC: B29B11/16
Abstract: A fiber-reinforced resin molding material [C] includes a chopped fiber bundle [A] and a matrix resin [B], the material being characterized in that, when divided into n layers along the thickness direction of the fiber-reinforced resin molding material [C], the number-average fiber length [Lk] of the chopped fiber bundle [Ak] constituting each layer Fk (1≤k≤n) gradually increases from one outermost layer F1 of the fiber-reinforced resin molding material [C] toward the other outermost layer Fn. Also provided is a molded article obtained by molding the fiber-reinforced resin molding material. This fiber-reinforced resin molding material exhibits excellent flowability, and can exhibit excellent mechanical properties when made into a molded article.
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