Abstract: Provided is a method for manufacturing a three-dimensional structure, capable of yielding a three dimensional structure that excels in buildability. The method for manufacturing a three-dimensional structure, comprises melting a filament that contains a thermoplastic resin by using a 3D printer, and depositing it onto a base, and comprising bonding the filament at one end of the filament to a surface of the base so as to achieve a bond strength to the base of 15 N or larger, and discharging the filament through a nozzle of the 3D printer onto a surface of the base so as to deposit thereon, while moving at least one of the base or the nozzle.

Abstract: Provided is a commingled yarn having a dispersing property and having a smaller amount of voids, a method for manufacturing the commingled yarn, and a weave fabric using the commingled yarn. The commingled yarn comprises a continuous thermoplastic resin fiber, a continuous reinforcing fiber, and a surface treatment agent and/or sizing agent, comprises the surface treatment agent and/or sizing agent in a content of 2.0% by weight or more, relative to a total amount of the continuous thermoplastic resin fiber and the continuous reinforcing fiber, and has a dispersibility of the continuous thermoplastic resin fiber and the continuous reinforcing fiber of 70% or larger.

Abstract: Provided is the method for manufacturing a three-dimensional structure with a less amount of internal voids or bubbles, and also to provide a 3D printer filament used for manufacturing such three-dimensional structure. The method for manufacturing a three-dimensional structure, the method comprises melting and depositing a filament using a 3D printer, the filament comprising a commingled yarn that contains a continuous reinforcing fiber (A) and a continuous thermoplastic resin fiber (B), with a dispersity of the continuous reinforcing fiber (A) in the commingled yarn of 60 to 100%.

Abstract: Provided is a wound body of a commingled yarn, the wound body being capable of effectively suppressing fraying and sagging, disorder of a lower layer, or breakage of the commingled yarn during winding or use. Also provided is a method for manufacturing the wound body.

Abstract: Provided is a polyester-based resin composition capable of giving a molded article excellent in transparency and gas-barrier property even though the molded article requires stretching treatment, and also provided is a method for producing the composition. The method for producing a polyester-based resin composition includes a step of obtaining a master batch (M) containing a polyester resin (A) having a cyclic acetal structure or an alicyclic hydrocarbon structure, and a polyamide resin (B), and a step of melt-kneading the master batch (M) with a polyester resin (R) in which 70 mol % or more of the dicarboxylic acid unit is derived from an aromatic dicarboxylic acid and 70 mol % or more of the diol unit is derived from an aliphatic diol, thereby giving a polyester-based resin composition, in this order,. The glass transition temperature of the polyester resin (A) is 105° C. or lower, the content of the polyester resin (A) in the polyester-based resin composition is 0.5 to 15.

Abstract: Provided is the method for manufacturing a three-dimensional structure with a less amount of internal voids or bubbles, and also to provide a 3D printer filament used for manufacturing such three-dimensional structure. The method for manufacturing a three-dimensional structure, the method comprises melting and depositing a filament using a 3D printer, the filament comprising a commingled yarn that contains a continuous reinforcing fiber (A) and a continuous thermoplastic resin fiber (B), with a dispersity of the continuous reinforcing fiber (A) in the commingled yarn of 60 to 100%.

Abstract: A post-heating treatment device performs a post-heating treatment for a welded section of a rail, after an induction heating coil is automatically disposed at a predetermined position based on the welded section. The device includes welded section detecting unit for detecting the position of a welded section on a rail, a first coil and a second coil that form an induction heating coil, first coil moving unit for moving the first coil to a position spaced apart from the rail at a predetermined distance, second coil moving unit for moving the second coil to a position separated from the rail at a predetermined distance, where the second coil is contacted to the first coil, clamping unit for pressing against the contact portion between the first coil and the second coil, and current applying unit for applying a predetermined current to the formed induction heating coil.

Abstract: Provided is the method for manufacturing a three-dimensional structure with a less amount of internal voids or bubbles, and also to provide a 3D printer filament used for manufacturing such three-dimensional structure. The method for manufacturing a three-dimensional structure, the method comprises melting and depositing a filament using a 3D printer, the filament comprising a commingled yarn that contains a continuous reinforcing fiber (A) and a continuous thermoplastic resin fiber (B), with a dispersity of the continuous reinforcing fiber (A) in the commingled yarn of 60 to 100%.

Abstract: Provided is a composite material capable of keeping a good appearance even after heat processed, a method for manufacturing a composite material and a method for manufacturing a molded article. The composite material of the present invention contains a commingled yarn that contains a continuous reinforcing fiber (A) and a continuous thermoplastic resin fiber (B) as fiber components thereof; and a thermoplastic resin fiber (C) that keeps the commingled yarn in place, a thermoplastic resin that composes the thermoplastic resin fiber (C) having a melting point 15° C. or more higher than the melting point of a thermoplastic resin that composes the continuous thermoplastic resin fiber (B).

Abstract: Provided is a pressure vessel having an outer layer with an improved gas barrier property, a lightweight liner with an excellent gas barrier property, and a novel method for manufacturing a pressure vessel. The pressure vessel contains a liner and an outer layer of the liner, wherein the outer layer is configured by a composite material that contains a continuous fiber and a polyamide resin impregnated into the continuous fiber; the polyamide resin contains a structural unit derived from diamine and a structural unit derived from dicarboxylic acid; and 50 mol % or more of the structural unit derived from diamine is derived from xylylenediamine.

Abstract: Provided is method for manufacturing a molded article that has a first portion, and a second portion that rises up from the first portion, the method comprising: placing a second material on a surface of a first material; the first material containing a reinforcing fiber (A) with a length exceeding 30 mm and a thermoplastic resin (B), the reinforcing fiber (A) being dispersed in the first material, and, the thermoplastic resin (B) being not substantially impregnated into the reinforcing fiber (A), and the second material containing a reinforcing fiber (a) with a length of 1 to 30 mm and a thermoplastic resin (b), the reinforcing fiber (a) being dispersed into the second material, and, the thermoplastic resin (b) being not substantially impregnated into the reinforcing fiber (a), and simultaneously forming the first portion and the second portion by one stroke of pressing, with a cohesive strength of the thermoplastic resin (B) and the thermoplastic resin (b) of 2 N/15 mm or larger, where the cohesive strength

Abstract: Provided is a material having large anti-piercing force and small surface roughness. The material contains continuous reinforcing fibers that are juxtaposed unidirectionally, and having a polyamide resin impregnated therein, wherein the continuous reinforcing fiber gives a non-circular cross sectional shape, when viewed perpendicularly to the longitudinal direction thereof, with a flatness ratio, given by long diameter (D2)/short diameter (D1), of 1.5 or larger, and in at least one cross section of the material taken perpendicularly to the direction of the continuous reinforcing fibers being juxtaposed, the percentage of area occupied by the continuous reinforcing fibers, whose long diameter (D2) lying at an angle of less than 20 degrees away from the direction of the continuous reinforcing fibers being juxtaposed, is 30 to 90% by area of the continuous reinforcing fibers.

Abstract: Provided is a polyester-based resin composition capable of giving a molded article excellent in transparency and gas-barrier property even though the molded article requires stretching treatment, and also provided is a method for producing the composition. The method for producing a polyester-based resin composition includes a step of obtaining a master batch (M) containing a polyester resin (A) having a cyclic acetal structure or an alicyclic hydrocarbon structure, and a polyamide resin (B), and a step of melt-kneading the master batch (M) with a polyester resin (R) in which 70 mol % or more of the dicarboxylic acid unit is derived from an aromatic dicarboxylic acid and 70 mol % or more of the diol unit is derived from an aliphatic diol, thereby giving a polyester-based resin composition, in this order,. The glass transition temperature of the polyester resin (A) is 105° C. or lower, the content of the polyester resin (A) in the polyester-based resin composition is 0.5 to 15.

Abstract: The present invention provides a honeycomb structure formed from a thermoplastic resin composition comprising: aromatic polyamide (A) which includes diamine units containing at least 70 mol % of xylylenediamine units and dicarboxylic acid units containing at least 50 mol % of C4-20 ?,?-linear aliphatic dicarboxylic acid units; and aliphatic polyamide (B) which includes aliphatic groups as repetitive units and in which the total of 10 to 24 carbons form the aliphatic groups. The composition ratio of aromatic polyamide (A):aliphatic polyamide (B) is within a range of 100:25 to 400 by mass standard. Also provided is a sandwich structure obtained by disposing flat plates at the top surface and bottom surface of the honeycomb structure, and a honeycomb substrate obtained by molding the thermoplastic resin composition into a film or a sheet.

Abstract: Provided are: a method for manufacturing a molded article having high compressive strength and excellent appearance by compressing a shaped article obtained using a 3D printer, and a material containing another resin; and a manufacturing device for the same. The method for manufacturing a molded article includes: shaping a filament containing a resin and continuous reinforcing fibers using a 3D printer; and manufacturing a molded article by compressing a second material containing resin against a shaped article formed by the shaping, wherein the shaped article has a void ratio of from 5 to 30%.

Abstract: Provided is a method for manufacturing a formed article that excels in shape retainability and appearance, using a sheet that contains a thermoplastic resin fiber and a continuous reinforcing fiber. The method for manufacturing a formed article comprises irradiating laser light onto a sheet having, arranged therein with a certain directionality, yarns that contain a thermoplastic resin fiber and a continuous reinforcing fiber, so as to allow at least a part of the thermoplastic resin fiber to be impregnated into the continuous reinforcing fiber; the laser light being irradiated so as to satisfy at least one of A or B below, over at least 70% or more of the laser irradiation area; A: irradiated in a direction 5 to 85° away from the direction of arrangement of yarns in the in-plane direction of the sheet; and B: irradiated in a direction 30 to 60° away from the direction perpendicular to the sheet plane.

Abstract: An object of the invention is achieved by a method for producing a composite material, including the steps of combining a resin precursor and a reinforcing fiber and carrying out a polymerization reaction of the resin precursor. That is, a thermoplastic resin composite material having high strength can be obtained by the production method.

Abstract: Provided is a method for manufacturing a three-dimensional structure, capable of yielding a three dimensional structure that excels in buildability. The method for manufacturing a three-dimensional structure, comprises melting a filament that contains a thermoplastic resin by using a 3D printer, and depositing it onto a base, and comprising bonding the filament at one end of the filament to a surface of the base so as to achieve a bond strength to the base of 15 N or larger, and discharging the filament through a nozzle of the 3D printer onto a surface of the base so as to deposit thereon, while moving at least one of the base or the nozzle.

Abstract: To provide a novel material that maintains suppleness which is the advantage of a material using fibers and has a low thermal shrinkage ratio, and a method for producing the material, a partially welded material using the material, a composite material, and a method for producing a molded product.

Abstract: Provided is a method for manufacturing a formed article that excels in shape retainability and appearance, using a sheet that contains a thermoplastic resin fiber and a continuous reinforcing fiber. The method for manufacturing a formed article comprises irradiating laser light onto a sheet having, arranged therein with a certain directionality, yarns that contain a thermoplastic resin fiber and a continuous reinforcing fiber, so as to allow at least a part of the thermoplastic resin fiber to be impregnated into the continuous reinforcing fiber; the laser light being irradiated so as to satisfy at least one of A or B below, over at least 70% or more of the laser irradiation area; A: irradiated in a direction 5 to 85° away from the direction of arrangement of yarns in the in-plane direction of the sheet; and B: irradiated in a direction 30 to 60° away from the direction perpendicular to the sheet plane.