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：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.

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：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：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.