Patents by Inventor Tsuneo Takano
Tsuneo Takano has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11660785Abstract: A method for producing a fiber reinforced plastic can suppress with which wrinkling or bridging in a convex surface or a concave surface having a large curvature at the same time even if the fiber reinforced plastic has a complicated three-dimensional shape. Such methods for producing a fiber reinforced plastic may involve shaping a prepreg sheet in which continuous fibers are impregnated with a resin material into a three-dimensional shape to produce a fiber reinforced plastic (a); wherein at least a portion of the continuous fibers in an area (X) of the prepreg sheet corresponding to an area (X?) in which the fiber reinforced plastic (a) is shear-deformed is bent in an in-plane direction in advance.Type: GrantFiled: July 8, 2019Date of Patent: May 30, 2023Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Takashi Honma, Satoshi Kaji
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Publication number: 20220168974Abstract: Provided is a method of manufacturing a FRP product that is obtained by integrally curing a prepreg where fibers are arranged in a specific direction, such as a unidirectional prepreg, a cloth prepreg, or a tow prepreg and a chopped fiber prepreg, such as a sheet molding compound, in which disorder of fiber arrangement in a portion obtained by curing the prepreg is suppressed to obtain an expected strength.Type: ApplicationFiled: February 16, 2022Publication date: June 2, 2022Applicant: Mitsubishi Chemical CorporationInventors: Satoshi Kaji, Tsuneo Takano, Yuma Furuhashi
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Patent number: 11325325Abstract: Provided is a method for manufacturing a fiber reinforced plastic molded body, the method including: performing thermocompression molding, by using a molding die, on a molding precursor which is obtained by arranging a prepreg including a thermosetting resin and a fiber around a thermoplastic solid body.Type: GrantFiled: April 23, 2019Date of Patent: May 10, 2022Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Takashi Honma, Satoshi Kaji
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Patent number: 11312090Abstract: This fiber-reinforced resin molded article has: a sheet molding compound layer; a continuous fiber reinforcing material layer; and a harrier layer, wherein the barrier layer is interposed between the sheet molding compound layer and the continuous fiber reinforcing material layer.Type: GrantFiled: April 10, 2019Date of Patent: April 26, 2022Assignee: Mitsubishi Chemical CorporationInventors: Satoshi Kaji, Tsuneo Takano, Kazuhisa Ikeda
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Publication number: 20210394462Abstract: A main object of the present invention is to provide beneficial improvements relating to a method for producing a fiber reinforced plastic product, the method including curing while pressurizing a prepreg preform by using a core having a fusible part as means for pressurizing.Type: ApplicationFiled: September 3, 2021Publication date: December 23, 2021Applicant: Mitsubishi Chemical CorporationInventors: Satoshi Kaji, Tsuneo Takano, Takashi Honma
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Patent number: 11000977Abstract: The present invention applies to a molding method for a fiber-reinforced plastic structure having an internal cavity. Firstly, grain groups, which mainly consist of a plurality of high-rigidity grains, are accommodated in bags, and a plurality of cores are formed. A reinforcing fiber substrate, is placed between the plurality of adjacent cores so as to be interposed therebetween. For example, a plurality of molding base materials are prepared by surrounding each core with a prepreg, and the plurality of molding base materials are combined and placed inside a molding die, and the molding base materials are compression molded. When compression molding, a part of the outer surface of the cores is locally pressurized, and the internal pressure of the cores is increased, changing the shape thereof, thus eliminating voids that are present between the cores and the prepreg and/or the prepreg and the molding surface of the die.Type: GrantFiled: August 16, 2019Date of Patent: May 11, 2021Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
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Publication number: 20210001517Abstract: What is provided is a molding device which enables a molded article to be excellently released, has a region that is on a molding surface and exhibits excellent abrasion resistance by being treated to show mold release properties, and can suppress the deterioration of mold release properties. Also provided is a method for manufacturing a fiber-reinforced composite material molded article. A fiber-reinforced composite material molding device (101) includes a molding die (130) for obtaining a fiber-reinforced composite material molded article by molding a fiber-reinforced composite material prepared by impregnating a reinforcing fiber base material with a resin composition, in which a surface free energy of a portion or the entirety of cavity surfaces (113a) and (123a) of the molding die (130) is equal to or lower than 25.0 mJ/m2 which is measured by a three liquid method.Type: ApplicationFiled: September 23, 2020Publication date: January 7, 2021Applicant: Mitsubishi Chemical CorporationInventors: Masahiro Ichino, Tsuneo Takano, Shirou Asada
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Patent number: 10773472Abstract: Provided is a method for manufacturing a fiber-reinforced plastic molded body by which, when a molded article having a hollow part is being molded using a molding mold, it is possible to deform the peripheral surface area of a core by increasing the pressure inside the core without using pressurized gas or pressurized fluid. A group of particles and the like including a particle group and a core block is accommodated in a flexible bag to form a core. The particle group is composed of multiple rigid particles. The core is arranged inside a prepreg containing a resin and fibers, and the prepreg including the core is arranged inside a molding mold and is molded by applying pressure.Type: GrantFiled: May 30, 2016Date of Patent: September 15, 2020Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Takashi Honma
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Patent number: 10532498Abstract: The present invention applies to a molding method for a fiber-reinforced plastic structure having an internal cavity. Firstly, grain groups, which mainly consist of a plurality of high-rigidity grains, are accommodated in bags, and a plurality of cores are formed. A reinforcing fiber substrate, is placed between the plurality of adjacent cores so as to be interposed therebetween. For example, a plurality of molding base materials are prepared by surrounding each core with a prepreg, and the plurality of molding base materials are combined and placed inside a molding die, and the molding base materials are compression molded. When compression molding, a part of the outer surface of the cores is locally pressurized, and the internal pressure of the cores is increased, changing the shape thereof, thus eliminating voids that are present between the cores and the prepreg and/or the prepreg and the molding surface of the die.Type: GrantFiled: June 11, 2013Date of Patent: January 14, 2020Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
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Publication number: 20190381704Abstract: The present invention applies to a molding method for a fiber-reinforced plastic structure having an internal cavity Firstly, grain groups, which mainly consist of a plurality of high-rigidity grains, are accommodated in bags, and a plurality of cores are formed. A reinforcing fiber substrate, is placed between the plurality of adjacent cores so as to be interposed therebetween. For example, a plurality of molding base materials are prepared by surrounding each core with a prepreg, and the plurality of molding base materials are combined and placed inside a molding die, and the molding base materials are compression molded. When compression molding, a part of the outer surface of the cores is locally pressurized, and the internal pressure of the cores is increased, changing the shape thereof, thus eliminating voids that are present between the cores and the prepreg and/or the prepreg and the molding surface of the die.Type: ApplicationFiled: August 16, 2019Publication date: December 19, 2019Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Tsuneo TAKANO, Yuuji KAZEHAYA, Mitsushi NISHIMURA
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Publication number: 20190329460Abstract: Provided is a method for producing a fiber reinforced plastic with which the occurrence of wrinkling or bridging in a convex surface or a concave surface having a large curvature can be suppressed at the same time even if the fiber reinforced plastic has a complicated three-dimensional shape, the method for producing a fiber reinforced plastic, including a step of shaping a prepreg sheet in which continuous fibers are impregnated with a resin material into a three-dimensional shape to produce a fiber reinforced plastic(a); wherein at least a portion of the continuous fibers in an area (X) of the prepreg sheet corresponding to an area (X?) in which the fiber reinforced plastic (a) is sheared and deformed is bent in an in-plane direction in advance.Type: ApplicationFiled: July 8, 2019Publication date: October 31, 2019Applicant: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Takashi Honma, Satoshi Kaji
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Patent number: 10434688Abstract: A method for molding fiber-reinforced plastic. A core is formed in a desired shape by accommodating, in a flexible bag, a grain group containing plurality of grains. The core is placed inside a prepreg containing resin and fibers, and the prepreg, in which the core is housed is placed in a molding die and compression molded. When doing so, the grain group contains first and second grains (a,b) that satisfy the equation (1). (1) 1.1?(Da/Db)?2.0 In the equation Da is the grain diameter of the grains (a), and Db is the grain diameter of the grain (b). When using a molding die to mold a molded article having a cavity, the above mentioned molding method enables an increase in the internal pressure of the core in order to change the peripheral surface area of the core, without using a pressurized gas and/or pressurized liquid.Type: GrantFiled: March 19, 2018Date of Patent: October 8, 2019Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
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Publication number: 20190270225Abstract: Provided is a method for manufacturing a fiber reinforced plastic molded body, the method including: performing thermocompression molding, by using a molding die, on a molding precursor which is obtained by arranging a prepreg including a thermosetting resin and a fiber around a thermoplastic solid body.Type: ApplicationFiled: April 23, 2019Publication date: September 5, 2019Applicant: Mitsubishi Chemical CorporationInventors: Tsuneo TAKANO, Takashi HONMA, Satoshi KAJI
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Publication number: 20190232577Abstract: This fiber-reinforced resin molded article has: a sheet molding compound layer; a continuous fiber reinforcing material layer; and a harrier layer, wherein the barrier layer is interposed between the sheet molding compound layer and the continuous fiber reinforcing material layer.Type: ApplicationFiled: April 10, 2019Publication date: August 1, 2019Applicant: Mitsubishi Chemical CorporationInventors: Satoshi KAJI, Tsuneo TAKANO, Kazuhisa IKEDA
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Patent number: 10265928Abstract: A fiber reinforced composite material structure comprises a thin sheet that includes a first surface and a plurality of convex portions which protrude and are regularly arranged on the first surface and each of which includes a top face; and a surface material that includes a second surface and is bonded to the top faces on the second surface.Type: GrantFiled: July 18, 2013Date of Patent: April 23, 2019Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura, Akihiro Maeda
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Publication number: 20180243946Abstract: A reinforced fiber substrate in which a plurality of thermally fusible binders are disposed on a surface thereof, a sum of areas of thermally fusible binders having a projected area equivalent circle diameter less than 300 times the average diameter of reinforced fibers constituting the reinforced fiber substrate is 10% or less of the total area of the thermally fusible fibers disposed on the surface. The reinforced fiber substrate imparts excellent shape retaining property and property to be impregnated with a matrix resin to a shaping fabric and exhibits excellent productivity.Type: ApplicationFiled: August 26, 2016Publication date: August 30, 2018Applicant: Mitsubishi Chemical CorporationInventors: Tsuneo TAKANO, Takashi HONMA
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Publication number: 20180229406Abstract: A method for molding fiber-reinforced plastic. A core is formed in a desired shape by accommodating, in a flexible bag, a grain group containing plurality of grains. The core is placed inside a prepreg containing resin and fibers, and the prepreg, in which the core is housed is placed in a molding die and compression molded. When doing so, the grain group contains first and second grains (a,b) that satisfy the equation (1). (1) 1.1?(Da/Db)?2.0 In the equation Da is the grain diameter of the grains (a), and Db is the grain diameter of the grain (b). When using a molding die to mold a molded article having a cavity, the above mentioned molding method enables an increase in the internal pressure of the core in order to change the peripheral surface area of the core, without using a pressurized gas and/or pressurized liquid.Type: ApplicationFiled: March 19, 2018Publication date: August 16, 2018Applicant: Mitsubishi Chemical CorporationInventors: Tsuneo TAKANO, Yuuji KAZEHAYA, Mitsushi NISHIMURA
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Patent number: 10022898Abstract: A method for molding fiber-reinforced plastic. A core is formed in a desired shape by accommodating, in a flexible bag, a grain group containing plurality of grains. The core is placed inside a prepreg containing resin and fibers, and the prepreg, in which the core is housed is placed in a molding die and compression molded. When doing so, the grain group contains first and second grains (a,b) that satisfy the equation (1). (1) 1.1?(Da/Db)?2.0 In the equation Da is the grain diameter of the grains (a), and Db is the grain diameter of the grain (b). When using a molding die to mold a molded article having a cavity, the above mentioned molding method enables an increase in the internal pressure of the core in order to change the peripheral surface area of the core, without using a pressurized gas and/or pressurized liquid.Type: GrantFiled: June 11, 2013Date of Patent: July 17, 2018Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
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Publication number: 20180162074Abstract: Provided is a method for manufacturing a fiber-reinforced plastic molded body by which, when a molded article having a hollow part is being molded using a molding mold, it is possible to deform the peripheral surface area of a core by increasing the pressure inside the core without using pressurized gas or pressurized fluid. A group of particles and the like including a particle group and a core block is accommodated in a flexible bag to form a core. The particle group is composed of multiple rigid particles. The core is arranged inside a prepreg containing a resin and fibers, and the prepreg including the core is arranged inside a molding mold and is molded by applying pressure.Type: ApplicationFiled: May 30, 2016Publication date: June 14, 2018Applicant: Mitsubishi Chemical CorporationInventors: Tsuneo TAKANO, Takashi HONMA
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Patent number: 9925703Abstract: The present invention relates to a method for molding fiber-reinforced plastic that is characterized: in comprising a process (1) for accommodating flowable grains comprising multiple particles in a flexible bag to form a core, a process (2) for interposing the core between fabric configured from fibers and placing the fabric and core inside a molding die, and a process (3) for injecting a resin into the molding die into which the fabric and core have been placed and curing; and in that, when performing the curing in process (3), a portion of one of the outer surfaces of the core is pressed and deformed by a pressing means to increase the internal pressure inside the core. The present invention provides a method for manufacturing fiber-reinforced plastics of excellent external appearance in which there are no defects such as wrinkles in the outer surface during forming using a core.Type: GrantFiled: October 24, 2012Date of Patent: March 27, 2018Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Yuuji Kazehaya