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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：US20230077555A1
公开(公告)日：2023-03-16
申请号：US17800922
申请日：2021-03-01
Applicant: Toray Industries, Inc.
Inventor： Katsuhiro Miyoshi , Tadashi Watanabe , Yasukazu Ono
IPC: C08J5/24
Abstract: A reinforcing-fiber composite material includes not less than 20 wt % but less than 70 wt % of discontinuous reinforcing fibers, and a matrix resin, wherein at least a portion of the discontinuous reinforcing fibers forms a fiber aggregation, and at least one bundle of the fiber aggregation has a surface that, when projected onto a two-dimensional plane, has at least one region where the number of monofilaments constituting the aggregation is reduced, at opposite ends in a longitudinal direction of a minimum circumscribed rectangle of the projected surface, and at portions other than the opposite ends.
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公开(公告)号：US11492731B2
公开(公告)日：2022-11-08
申请号：US17130976
申请日：2020-12-22
Applicant: Toray Industries, Inc.
Inventor： Tetsuya Motohashi , Takafumi Hashimoto , Katsuhiro Miyoshi , Yoshihiro Kawahara , Tamotsu Suzuki , Chiasa Sato
IPC: D02J1/18 , B65H51/005 , D01D11/02 , B29B15/12 , D04H1/732 , B29C70/18 , B29K307/04
Abstract: A method of producing a partially separated fiber bundle wherein, while a fiber bundle includes a plurality of single fibers travels along a lengthwise direction of the fiber bundle, a separator provided with a plurality of projected parts is penetrated into the fiber bundle to create a separation-processed part, and entangled parts, where the single fibers are interlaced, are formed at contact parts with the projected parts in at least one separation-processed part, thereafter the separator is removed from the fiber bundle, and after passing through an entanglement accumulation part including the entangled parts, the separator is penetrated again into the fiber bundle, characterized in that a separation processing time t1 during being penetrated with the separator and a time t2 from being removed with the separator to being penetrated again into the fiber bundle satisfy Equation (1): 0.03≤t2/(t1+t2)≤0.5.
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Patent Agency Ranking
公开(公告)号：US20210108342A1
公开(公告)日：2021-04-15
申请号：US17130976
申请日：2020-12-22
Applicant: Toray Industries, Inc.
Inventor： Tetsuya Motohashi , Takafumi Hashimoto , Katsuhiro Miyoshi , Yoshihiro Kawahara , Tamotsu Suzuki , Chiasa Sato
IPC: D02J1/18 , B65H51/005 , B29B15/12 , B29C70/18
Abstract: A method of producing a partially separated fiber bundle wherein, while a fiber bundle includes a plurality of single fibers travels along a lengthwise direction of the fiber bundle, a separator provided with a plurality of projected parts is penetrated into the fiber bundle to create a separation-processed part, and entangled parts, where the single fibers are interlaced, are formed at contact parts with the projected parts in at least one separation-processed part, thereafter the separator is removed from the fiber bundle, and after passing through an entanglement accumulation part including the entangled parts, the separator is penetrated again into the fiber bundle, characterized in that a separation processing time t1 during being penetrated with the separator and a time t2 from being removed with the separator to being penetrated again into the fiber bundle satisfy Equation (1): 0.03≤t2/(t1+t2)≤0.5.
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公开(公告)号：US10676311B2
公开(公告)日：2020-06-09
申请号：US15539459
申请日：2015-12-09
Applicant: Toray Industries, Inc.
Inventor： Yoshihiro Kawahara , Tamotsu Suzuki , Katsuhiro Miyoshi
IPC: B65H51/005 , D01D11/02 , D02J1/18 , D01D5/42
Abstract: A method of manufacturing and a device for manufacturing a partial split-fiber fiber bundle and a partial split-fiber fiber bundle obtained are characterized by piercing a fiber splitting means provided with a plurality of protruding parts into a fiber bundle formed from a plurality of single fibers while making the fiber bundle travel along the longitudinal direction thereof and creating a split-fiber processed part, forming entangled parts where single fibers are interlaced at contact parts with the protruding parts in at least one split-fiber processed part, thereafter pulling the fiber splitting means out of the fiber bundle, and after passing through an entanglement accumulation part including the entangled parts, once again piercing the fiber splitting means into the fiber bundle.
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公开(公告)号：US10309045B2
公开(公告)日：2019-06-04
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 , C08J5/06 , C08K3/04 , C08K3/013 , C08J5/04
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%.
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公开(公告)号：US20190077050A1
公开(公告)日：2019-03-14
申请号：US16078716
申请日：2017-02-15
Applicant: Toray Industries, Inc.
Inventor： Katsuhiro Miyoshi , Takafumi Hashimoto , Tetsuya Motohashi
Abstract: A discontinuous fiber-reinforced composite material including 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, and the longer the fiber bundle length of the discontinuous reinforcing fiber bundle is, 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 is.
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20.发明申请公开(公告)号：US20170355550A1
公开(公告)日：2017-12-14
申请号：US15539459
申请日：2015-12-09
Applicant: Toray Industries, Inc.
Inventor： Yoshihiro Kawahara , Tamotsu Suzuki , Katsuhiro Miyoshi
IPC: B65H51/005 , D02J1/18 , D01D11/02
Abstract: A method of manufacturing and a device for manufacturing a partial split-fiber fiber bundle and a partial split-fiber fiber bundle obtained are characterized by piercing a fiber splitting means provided with a plurality of protruding parts into a fiber bundle formed from a plurality of single fibers while making the fiber bundle travel along the longitudinal direction thereof and creating a split-fiber processed part, forming entangled parts where single fibers are interlaced at contact parts with the protruding parts in at least one split-fiber processed part, thereafter pulling the fiber splitting means out of the fiber bundle, and after passing through an entanglement accumulation part including the entangled parts, once again piercing the fiber splitting means into the fiber bundle.
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