Abstract: A fiber-reinforced resin material used for molding a fiber-reinforced resin which includes a matrix resin and reinforcing fiber bundles A including chopped fiber bundles each including 100 or more single fibers, wherein the product of an average porosity within fiber bundles Pfav (?) and an average fiber bundle thickness tfav (mm) is 0 mm or more and 0.01 mm or less and a porosity of composite Pc (?) is 0.02 or more and 0.4 or less, and a method for producing the same. The fiber-reinforced resin material is a molding material excellent in terms of productivity and reduction in LCA, which can give high mechanical properties to a molded article using the molding material and further which is excellent also in flowability during molding.

Abstract: A partially separated fiber bundle includes a separated fiber section and an unseparated fiber section, being configured to give a ratio Amax/Amin of 1.1 or larger and 3 or smaller, when the number of fiber bundles contained in the width direction of the partially separated fiber bundle (fiber separating number: Nn) measured at a freely selected point Pn (where, n represents an integer of 1 to 100, and freely selected points Pn and Pn+1, excluding n=100, being 50 cm or more away from each other), is divided by a full width of Wn of the partially separated fiber bundle, to calculate the fiber separating number per unit width An, and assuming its maximum value as Amax and its minimum value as Amin.

Abstract: A heating apparatus that heats a thermoplastic resin sheet includes a vertically-movable heating wall that is indirectly heated with a saturated steam of a heat medium and heats the thermoplastic resin sheet above a melting point of the thermoplastic resin by bringing the heating wall into contact with the thermoplastic resin sheet.

Abstract: A reinforcing fiber mat includes reinforcing fiber bundles having an average fiber length of 5 mm to 100 mm, wherein reinforcing fiber bundles consisting of 86 or more fibers per bundle are contained at a weight content of more than 99 wt % to 100 wt % and the reinforcing fiber bundles contain single yarns by 500 fibers/mm-width or more and 1,600 fibers/mm-width or less and have a drape level of 120 mm or more and 240 mm or less.

Abstract: A partially separated fiber bundle includes a separated fiber section and an unseparated fiber section, being configured to give a ratio Amax/Amin of 1.1 or larger and 3 or smaller, when the number of fiber bundles contained in the width direction of the partially separated fiber bundle (fiber separating number: Nn) measured at a freely selected point Pn (where, n represents an integer of 1 to 100, and freely selected points Pn and Pn+1, excluding n=100, being 50 cm or more away from each other), is divided by a full width of Wn of the partially separated fiber bundle, to calculate the fiber separating number per unit width An, and assuming its maximum value as Amax and its minimum value as Amin.

Abstract: A partially separated fiber bundle having a surface of a reinforcing fiber coated with a sizing agent containing a water-soluble polyamide-based resin, in which a separated fiber section consisting of a plurality of separated fiber bundles and an unseparated fiber section are provided alternately along a longitudinal direction of the reinforcing fiber bundle consisting of a plurality of single yarns, wherein the reinforcing fiber bundle contains 600 fibers/mm or more and less than 1,600 fibers/mm of fibers per unit width while the reinforcing fiber has a drape level of 120 mm or more and 240 mm or less.

Abstract: A fiber-reinforced resin material used for molding a fiber-reinforced resin which includes a matrix resin and reinforcing fiber bundles A including chopped fiber bundles each including 100 or more single fibers, wherein the product of an average porosity within fiber bundles Pfav (?) and an average fiber bundle thickness tfav (mm) is 0 mm or more and 0.01 mm or less and a porosity of composite Pc (?) is 0.02 or more and 0.4 or less, and a method for producing the same. The fiber-reinforced resin material is a molding material excellent in terms of productivity and reduction in LCA, which can give high mechanical properties to a molded article using the molding material and further which is excellent also in flowability during molding.

Abstract: A heating apparatus that heats a thermoplastic resin sheet includes a vertically-movable heating wall that is indirectly heated with a saturated steam of a heat medium and heats the thermoplastic resin sheet above a melting point of the thermoplastic resin by bringing the heating wall into contact with the thermoplastic resin sheet.

Abstract: A reinforcing fiber bundle base material has a reinforcing fiber bundle surface to which a sizing agent adheres, wherein a reinforcing fiber bundle has a fiber number per unit width of 600 fibers/mm or more and less than 1,600 fibers/mm while the reinforcing fiber bundle has a drape level of 120 mm or more and 240 mm or less.

Abstract: A method of producing a partially separated fiber bundle includes a partial separation processing step for alternately forming separation-processed sections, each divided into a plurality of bundles, and not-separation-processed sections along the lengthwise direction of a fiber bundle, wherein a separation means provided with a plurality of projected parts is penetrated into the fiber bundle to create separation-processed parts, the separation means is removed from the fiber bundle, and the separation means is penetrated into the fiber bundle again, characterized in that a sizing agent is applied at an arbitrary timing during the production process of the partially separated fiber bundle. A partially separated fiber bundle is obtained by the production method, a fiber-reinforced resin molding material uses the partially separated fiber bundle, and a production method makes the fiber-reinforced resin molding material.

Abstract: A fiber-reinforced thermoplastic resin forming material contains reinforcing fiber bundles in a thermoplastic resin, wherein a first component (I) and a second component (II) are laminated in such a manner that the first component (I) is arranged in the surface of the forming material. The fiber-reinforced thermoplastic resin forming material has excellent mechanical properties and excellent formability into a complicated shape. The first component (I): a sheet-like material having a heat conductivity (?1) of 0.2 W/m·K or less; and the second component (II): a fiber-reinforced thermoplastic resin sheet-like material having a product (B2) of a density and a specific heat of 1.7×106 J/m3·K or more.

Abstract: A reinforcing fiber mat includes reinforcing fiber bundles having an average fiber length of 5 mm to 100 mm, wherein reinforcing fiber bundles consisting of 86 or more fibers per bundle are contained at a weight content of more than 99 wt % to 100 wt % and the reinforcing fiber bundles contain single yarns by 500 fibers/mm-width or more and 1,600 fibers/mm-width or less and have a drape level of 120 mm or more and 240 mm or less.

Abstract: A fiber-reinforced resin forming material includes fiber-reinforced thermoplastic resin sheet components (I) and (II), wherein: component (I) includes a resin containing reinforcing fiber bundle (i) having average fiber number n1 of 5,000 pieces or less, average fiber length Lf1 of 10 mm or more and 100 mm or less, and fiber number per unit width of 2,000 pieces/mm or less; component (II) includes a resin containing reinforcing fiber bundle (ii) having average fiber number n2 of 500 pieces or more, average fiber length Lf2 of 3 mm or more and less than 10 mm, and fiber number per unit width of 2,000 pieces/mm or less; and component (I) and component (II) are laminated to expose component (I) on a surface.

Abstract: A reinforcing fiber bundle is a continuous reinforcing fiber bundle having a length of at least 1 m and is characterized by the number of monofilaments per unit width being at most 1,600/mm and the average number of fibers in the bundle being at most 1,000 in a region (I), and the drape level found in a region (II) being 120-240 mm. The continuous reinforcing fiber bundle has a length of at least 1 m and is characterized by the adhesion amount of a sizing agent (I) in the region (I) being 0.5-10% by weight and the drape level found in the region (II) being 120-240 mm. The continuous reinforcing fiber bundle has superior mechanical properties, formability into complex shapes, and continuous producibility.

Abstract: A partially separated fiber bundle having a surface of a reinforcing fiber coated with a sizing agent containing a water-soluble polyamide-based resin, in which a separated fiber section consisting of a plurality of separated fiber bundles and an unseparated fiber section are provided alternately along a longitudinal direction of the reinforcing fiber bundle consisting of a plurality of single yarns, wherein the reinforcing fiber bundle contains 600 fibers/mm or more and less than 1,600 fibers/mm of fibers per unit width while the reinforcing fiber has a drape level of 120 mm or more and 240 mm or less.

Abstract: A method of producing a partially separated fiber bundle includes a partial separation processing step for alternately forming separation-processed sections, each divided into a plurality of bundles, and not-separation-processed sections along the lengthwise direction of a fiber bundle, wherein a separation means provided with a plurality of projected parts is penetrated into the fiber bundle to create separation-processed parts, the separation means is removed from the fiber bundle, and the separation means is penetrated into the fiber bundle again, characterized in that a sizing agent is applied at an arbitrary timing during the production process of the partially separated fiber bundle. A partially separated fiber bundle is obtained by the production method, a fiber-reinforced resin molding material uses the partially separated fiber bundle, and a production method makes the fiber-reinforced resin molding material.