公开(公告)号：US20180265685A1

公开(公告)日：2018-09-20

申请号：US15764214

申请日：2016-09-28

Applicant: KYORAKU CO., LTD.

Inventor： Ryohei YUASA ,  Takashi NOMURA

IPC: C08L23/12 ,  B33Y70/00 ,  B29B11/10 ,  B29B11/16

CPC classification number: C08L23/12 ,  B29B11/10 ,  B29B11/16 ,  B29C48/022 ,  B29C48/05 ,  B29C48/28 ,  B29C48/919 ,  B29C64/118 ,  B29C2948/92123 ,  B29C2948/92428 ,  B29C2948/92438 ,  B29K2023/12 ,  B29K2023/16 ,  B29K2023/22 ,  B29K2105/12 ,  B29K2307/04 ,  B29K2507/04 ,  B33Y10/00 ,  B33Y70/00 ,  C08K7/06 ,  C08L23/16 ,  C08L101/00 ,  C08L2205/025 ,  C08L2207/04 ,  C08K7/14

Abstract: Provided is a molded resin strand configured so that interlayer fusion of a shaped object can be improved and mechanical aptitude (specifically, stiffness) in a 3D printer can be more improved even in a case where an inorganic filler such as carbon fibers is mixed. The molded resin strand contains thermoplastic resin, an inorganic filler, and α-olefin elastomer. The thermoplastic resin is polypropylene, for example. The inorganic filler is carbon fibers, for example. The α-olefin elastomer is ethylene-α-olefin copolymer, for example. The molded resin strand of the present invention is used for a 3D printer employing a fused deposition modeling method.

公开(公告)号：US20190390071A1

公开(公告)日：2019-12-26

申请号：US16480696

申请日：2018-01-30

Applicant: KYORAKU CO., LTD.

Inventor： Ryohei YUASA ,  Takashi NOMURA

IPC: C09D11/037 ,  C09D11/102 ,  B33Y70/00 ,  B29B11/10 ,  B29B11/16

Abstract: Provided is a filament resin molded article capable of reliably maintaining a shape of a 3D model when a shape memory resin is three-dimensionally formed. With the filament resin molded article, it is possible to form 3D models of various shapes, and to improve a curing speed. The filament resin molded article contains a shape memory resin and an inorganic filler. The inorganic filler is, for example, a glass fiber or a carbon fiber. The filament resin molded article is used for a hot melt lamination type 3D printer. A deformed shape is fixed by deforming a 3D shaped object formed using the filament resin molded article containing the shape memory resin, at a temperature which is equal to or higher than a glass transition temperature (Tg) of the shape memory resin and lower than a melting temperature or a decomposition temperature, and cooling the 3D shaped object to the glass transition temperature or lower while maintaining its shape. An original molded shape is recovered by heating the 3D-shaped object in the temperature which is equal to or higher than a glass transition temperature, and lower than a melting temperature or a decomposition temperature.

公开(公告)号：US20240367370A1

公开(公告)日：2024-11-07

申请号：US18775152

申请日：2024-07-17

Applicant: KYORAKU CO., LTD.

Inventor： Ryohei YUASA ,  Takashi NOMURA

IPC: B29C64/118 ,  B29K21/00 ,  B33Y10/00 ,  B33Y70/00

Abstract: The present invention provides a granular material for a fused deposition three-dimensional printer that enables a flexible molded object to be manufactured with high precision. According to the present invention, provided is a granular material for a fused deposition three-dimensional printer. The granular material is formed of a thermoplastic elastomer, and thermoplastic elastomer has a Shore A hardness of 0 to 10 and a melt flow rate of 10 to 200 g/10 min at least one of measurement temperatures of 120 to 230° C.

公开(公告)号：US20220105675A1

公开(公告)日：2022-04-07

申请号：US17425082

申请日：2020-02-04

Applicant: KYORAKU CO., LTD.

Inventor： Ryohei YUASA ,  Takashi NOMURA

IPC: B29C64/118 ,  B33Y10/00 ,  B33Y70/00

Abstract: The present invention provides a granular material for a fused deposition three-dimensional printer that enables a flexible molded object to be manufactured with high precision. According to the present invention, provided is a granular material for a fused deposition three-dimensional printer. The granular material is formed of a thermoplastic elastomer, and thermoplastic elastomer has a Shore A hardness of 0 to 10 and a melt flow rate of 10 to 200 g/10 min at least one of measurement temperatures of 120 to 230° C.

公开(公告)号：US20210170633A1

公开(公告)日：2021-06-10

申请号：US16760993

申请日：2018-11-02

Applicant: KYORAKU CO., LTD.

Inventor： Ryohei YUASA ,  Takashi NOMURA

IPC: B29B11/10 ,  B29B15/12 ,  B33Y10/00 ,  B33Y70/10 ,  B29C64/118 ,  D01D5/34 ,  D01F8/04

Abstract: A filament can enable an arbitrary material to exhibit shape memory characteristics. A filament includes a linear core; and a covering layer covering the core; wherein: the core is formed with a shape memory material; and the covering layer is formed with a material different from the material of the core.

公开(公告)号：US20240262037A1

公开(公告)日：2024-08-08

申请号：US18569856

申请日：2022-08-23

Applicant: KYORAKU CO., LTD.

Inventor： Ryohei YUASA ,  Tomoyuki TOMITA

IPC: B29C64/321 ,  B29C64/118 ,  B29C64/209 ,  B29C64/241 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B29C64/321 ,  B29C64/118 ,  B29C64/209 ,  B29C64/241 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29K2995/0097

Abstract: Provided is a thermal melting three-dimensional printer capable of preventing molding defects. According to the present invention, there is provided a thermal melting three-dimensional printer comprising an extruder, and a push-in mechanism, wherein the extruder includes a hopper, a cylinder, and a nozzle, the hopper is configured to feed pellets into the cylinder through a raw material feed port provided in the cylinder, the extruder is configured to melt and knead, in the cylinder, the pellets fed into the cylinder to form a molten resin and to extrude the molten resin through the nozzle to form a strand, and the push-in mechanism is configured to push pellets loaded on a loading surface of the hopper into the cylinder through the raw material feed port.

公开(公告)号：US20220332041A1

公开(公告)日：2022-10-20

申请号：US17760643

申请日：2020-09-25

Applicant: KYORAKU CO., LTD.

Inventor： Ryohei YUASA ,  Takashi NOMURA

IPC: B29C64/118 ,  B29C64/209 ,  B29C64/321 ,  B33Y10/00 ,  B33Y70/10

Abstract: A granular material for a fused deposition three-dimensional printer that enables a flexible molded object to be manufactured with high precision. A granular material for a fused deposition three-dimensional printer is provided. The granular material is formed of a thermoplastic elastomer, and the thermoplastic elastomer has, at at least one of the measurement temperature of 120 to 270° C., a loss tangent tan δ of 0.40 or more and a loss modulus G″ of 11000 Pa or less, which are measured with a rotary rheometer having a pair of parallel plates with a diameter of 20 mm and a measurement gap of 1.3 mm at a frequency of 1 Hz.

公开(公告)号：US20210186154A1

公开(公告)日：2021-06-24

申请号：US17252457

申请日：2019-06-28

Applicant: KYORAKU CO., LTD.

Inventor： Ryohei YUASA

IPC: A43B17/14 ,  B32B7/02 ,  B32B5/18 ,  B32B27/06 ,  B29C64/118 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y80/00 ,  A43B17/00 ,  B33Y30/00

Abstract: A structure in which complexity of the moving path of the nozzle during forming is suppressed even if the structure has regions with different elasticity and a manufacturing method for a structure that can suppress complexity of the moving path of the nozzle when forming the structure with regions with different elasticity. The structure includes a formed body with a linear structure formed of a linear resin. The formed body includes first and second elastic regions, and the linear resin forming the first elastic region is thinner than the linear resin forming the second elastic region.

公开(公告)号：US20180093413A1

公开(公告)日：2018-04-05

申请号：US15562516

申请日：2016-03-31

Applicant: Kyoraku Co., Ltd.

Inventor： Ryohei YUASA ,  Takashi NOMURA ,  Naoki UEDA

IPC: B29C64/118 ,  B29C47/00 ,  B29C47/06 ,  C08L55/02 ,  C08J5/04 ,  B33Y70/00

CPC classification number: B29C64/118 ,  B29C48/02 ,  B29C48/022 ,  B29C48/05 ,  B29C48/18 ,  B29C48/21 ,  B29C48/266 ,  B29C48/49 ,  B29C48/905 ,  B29C48/908 ,  B29C48/92 ,  B29C64/209 ,  B29C64/314 ,  B29C67/00 ,  B29C2948/92123 ,  B29C2948/92438 ,  B29C2948/92619 ,  B29C2948/92942 ,  B29K2055/02 ,  B29K2105/16 ,  B29K2507/04 ,  B29K2509/00 ,  B29K2995/007 ,  B33Y70/00 ,  C08J5/042 ,  C08L55/02

Abstract: A molded resin strand includes a first layer containing thermoplastic resin, and a second layer covering the first layer and containing thermoplastic resin exhibiting physical properties different from those of the first layer. For example, the second layer is melt-extruded with the second layer covering the first layer. A three-dimensional object is modeled by lamination deposition by fusion between adjacent second layers. In a molded resin strand manufacturing method, a melt-kneaded resin material is continuously extruded from a ferrule of an extruder. The extruded molded resin strand is vacuum-sucked while passing through a sizing device. Subsequently, the molded resin strand is wound up after cooling solidification. The sizing device is provided with a space having a circular cross section, and a surface of the sizing device facing the space is provided with a plurality of vacuum suction grooves.