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公开(公告)号：US10392482B2
公开(公告)日：2019-08-27
申请号：US15512333
申请日：2015-08-31
Applicant: Toray Industries, Inc.
Inventor： Kenta Bamba , Tetsuya Motohashi , Katsuhiro Miyoshi , Takafumi Hashimoto
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%.
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公开(公告)号：US10066084B2
公开(公告)日：2018-09-04
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
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.
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公开(公告)号：US09481770B2
公开(公告)日：2016-11-01
申请号：US14403677
申请日：2013-05-15
Applicant: Toray Industries, Inc.
Inventor： Yoshihiro Naruse , Katsuhiro Miyoshi , Takashi Shimada , Takafumi Hashimoto , Tetsuya Ohara
CPC classification number: C08J5/06 , B32B2250/05 , B32B2260/046 , B32B2262/106 , B32B2305/076 , B32B2305/28 , B32B2307/54 , C08J5/042 , C08J2377/02
Abstract: A carbon fiber composite material which includes a carbon fiber sheet as a reinforcing material and a thermoplastic resin as a matrix resin, the carbon fiber sheet exhibiting a work per areal weight of 1×10−3 to 30×10−3 [(N·mm)/(g/m2)] in a tensile test using a specimen having a width of 25 mm. The carbon fiber composite material exhibits excellent flowability in molding and ensures excellent moldability even when molded into a complicated shape. Further, the composite material can yield a molded product which has high mechanical properties with minimized dispersion, thus being suitable for press molding.
Abstract translation: 作为增强材料的碳纤维片和作为基质树脂的热塑性树脂的碳纤维复合材料，所述碳纤维片的每面重为1×10-3〜30×10-3 [（N· mm）/（g / m 2）]在使用宽度为25mm的试样的拉伸试验中。 碳纤维复合材料在成型时表现出优异的流动性，并且即使在模制成复杂形状时也确保优异的成型性。 此外，复合材料可以产生具有高机械性能并且最小化分散体的模制产品，因此适合于压制成型。
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公开(公告)号：US20150183941A1
公开(公告)日：2015-07-02
申请号：US14403677
申请日：2013-05-15
Applicant: Toray Industries, Inc.
Inventor： Yoshihiro Naruse , Katsuhiro Miyoshi , Takashi Shimada , Takafumi Hashimoto , Tetsuya Ohara
IPC: C08J5/06
CPC classification number: C08J5/06 , B32B2250/05 , B32B2260/046 , B32B2262/106 , B32B2305/076 , B32B2305/28 , B32B2307/54 , C08J5/042 , C08J2377/02
Abstract: A carbon fiber composite material which includes a carbon fiber sheet as a reinforcing material and a thermoplastic resin as a matrix resin, the carbon fiber sheet exhibiting a work per areal weight of 1×10−3 to 30×10−3 [(N·mm)/(g/m2)] in a tensile test using a specimen having a width of 25 mm. The carbon fiber composite material exhibits excellent flowability in molding and ensures excellent moldability even when molded into a complicated shape. Further, the composite material can yield a molded product which has high mechanical properties with minimized dispersion, thus being suitable for press molding.
Abstract translation: 作为增强材料的碳纤维片和作为基质树脂的热塑性树脂的碳纤维复合材料，所述碳纤维片的每面重为1×10-3〜30×10-3 [（N· mm）/（g / m 2）]在使用宽度为25mm的试样的拉伸试验中。 碳纤维复合材料在成型时表现出优异的流动性，并且即使在模制成复杂形状时也确保优异的成型性。 此外，复合材料可以产生具有高机械性能并且最小化分散体的模制产品，因此适合于压制成型。
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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.
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Patent Agency Ranking
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°
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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%.
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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。
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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：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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