A method for producing a composite material in which a first fabric and a second fabric made from a fiber material are impregnated with a thermosetting resin and integrally molded, wherein a resin flow path through which thermosetting resin flows is provided between the first fabric and the second fabric, and the first fabric and the second fabric are impregnated with thermosetting resin from the resin flow path as well as being impregnated with thermosetting resin from the surface.

A method for producing a composite material in which a first fabric and a second fabric made from a fiber material are impregnated with a thermosetting resin and integrally molded, wherein a resin flow path through which thermosetting resin flows is provided between the first fabric and the second fabric, and the first fabric and the second fabric are impregnated with thermosetting resin from the resin flow path as well as being impregnated with thermosetting resin from the surface.

The present invention relates to a fiber-reinforced plastic, including: a reinforcing fiber group containing reinforcing fibers; a thermosetting resin layer containing a first thermosetting resin; and a thermoplastic resin layer, in which the thermoplastic resin layer is provided as a surface layer of the fiber-reinforced plastic, an interface between the thermoplastic resin layer and the thermosetting resin layer is positioned inside the reinforcing fiber group, and the thermoplastic resin layer contains a dispersed phase of a second thermosetting resin.

Provided are a method and an apparatus for manufacturing a fiber-reinforced resin molding material by which, when the fiber-reinforced resin molding material is manufactured, separated fiber bundles can be supplied to a cutting machine in stable condition while avoiding the influence of meandering of the fiber bundles or slanting or meandering of filaments occurring in the fiber bundles. A method for manufacturing a sheet-shaped fiber-reinforced resin molding material in which spaces between filaments of cut-out fiber bundles (CF) are impregnated with resin includes, so that a condition of the following expression (1) is satisfied, intermittently separating fibers of the continuous fiber bundles (CF) in a longitudinal direction by a rotational blade (18) serving as a fiber separating part and cutting out the fiber bundles with an interval therebetween in a longitudinal direction of a cutting machine (13A) to obtain the cut-out fiber bundles (CF). Expression (1): 1≤a/L (where a represents a length of a separated part of the continuous fiber bundles (CF) and L represents an interval when the fiber bundles (CF) are cut out in the longitudinal direction.)

Provided are a method and an apparatus for manufacturing a fiber-reinforced resin molding material by which, when the fiber-reinforced resin molding material is manufactured, separated fiber bundles can be supplied to a cutting machine in stable condition while avoiding the influence of meandering of the fiber bundles or slanting or meandering of filaments occurring in the fiber bundles. A method for manufacturing a sheet-shaped fiber-reinforced resin molding material in which spaces between filaments of cut-out fiber bundles (CF) are impregnated with resin includes, so that a condition of the following expression (1) is satisfied, intermittently separating fibers of the continuous fiber bundles (CF) in a longitudinal direction by a rotational blade (18) serving as a fiber separating part and cutting out the fiber bundles with an interval therebetween in a longitudinal direction of a cutting machine (13A) to obtain the cut-out fiber bundles (CF). Expression (1): 1≤a/L (where a represents a length of a separated part of the continuous fiber bundles (CF) and L represents an interval when the fiber bundles (CF) are cut out in the longitudinal direction.)

Flooring and floor panels are described that include a multi-layer tape. The multi-layer tape can include two or more layers at least one of which can include a unidirectional orientation of fibers. In some configurations, the panels can include a tape with multiple layers where each layer of the tape includes a unidirectional orientation of fibers, which may be the same or may be different. Vehicles and other devices including the panels are also described.

Flooring and floor panels are described that include a multi-layer tape. The multi-layer tape can include two or more layers at least one of which can include a unidirectional orientation of fibers. In some configurations, the panels can include a tape with multiple layers where each layer of the tape includes a unidirectional orientation of fibers, which may be the same or may be different. Vehicles and other devices including the panels are also described.

A reinforced pultruded profile having a top edge, a bottom edge spaced along a vertical axis extending between the top edge and the bottom edge, a transverse axis oriented perpendicular to the vertical axis, and a machine axis oriented along a length of the profile. The pultruded profile includes a first reinforcing layer spaced along the vertical axis and oriented along the transverse axis, a second reinforcing layer spaced along the vertical axis and oriented along the transverse axis, and a first structural layer located between the first reinforcing layer and the second reinforcing layer, the first structural layer having a modulus of elasticity of at least 175 GPa.

A reinforced pultruded profile having a top edge, a bottom edge spaced along a vertical axis extending between the top edge and the bottom edge, a transverse axis oriented perpendicular to the vertical axis, and a machine axis oriented along a length of the profile. The pultruded profile includes a first reinforcing layer spaced along the vertical axis and oriented along the transverse axis, a second reinforcing layer spaced along the vertical axis and oriented along the transverse axis, and a first structural layer located between the first reinforcing layer and the second reinforcing layer, the first structural layer having a modulus of elasticity of at least 175 GPa.

Provided are a method and an apparatus for manufacturing a fiber-reinforced resin molding material by which, when the fiber-reinforced resin molding material is manufactured, separated fiber bundles can be supplied to a cutting machine in stable condition while avoiding the influence of meandering of the fiber bundles or slanting or meandering of filaments occurring in the fiber bundles. A method for manufacturing a sheet-shaped fiber-reinforced resin molding material in which spaces between filaments of cut-out fiber bundles (CF) are impregnated with resin includes, so that a condition of the following expression (1) is satisfied, intermittently separating fibers of the continuous fiber bundles (CF) in a longitudinal direction by a rotational blade (18) serving as a fiber separating part and cutting out the fiber bundles with an interval therebetween in a longitudinal direction of a cutting machine (13A) to obtain the cut-out fiber bundles (CF). Expression (1): 1≤a/L (where a represents a length of a separated part of the continuous fiber bundles (CF) and L represents an interval when the fiber bundles (CF) are cut out in the longitudinal direction.)