Abstract: A dry tape material for fiber placement includes a plurality of reinforcing fiber strands that satisfy (i) to (iii): (i) the reinforcing fiber strand has thicknesses T1 and T3 at both ends in a width direction of a section of the reinforcing fiber strand, and both T1 and T3 are 50 to 200% relative to a thickness T2 at a central portion of the reinforcing fiber strand, (ii) the reinforcing fiber strand has a number of filaments N and a width W that satisfy a relationship of 4.8<N/W<12, and (iii) the reinforcing fiber strand has a form kept by a first resin material having a glass transition temperature Tg or a melting point Tm of 40° C. to 200° C., the first resin material being heat-meltable, wherein the plurality of reinforcing fiber strands are bound and integrated with each other by a second resin material.

Abstract: A dry tape material for fiber placement includes a plurality of reinforcing fiber strands that satisfy (i) to (iii): (i) the reinforcing fiber strand has thicknesses T1 and T3 at both ends in a width direction of a section of the reinforcing fiber strand, and both T1 and T3 are 50 to 200% relative to a thickness T2 at a central portion of the reinforcing fiber strand, (ii) the reinforcing fiber strand has a number of filaments N and a width W that satisfy a relationship of 4.8<N/W<12, and (iii) the reinforcing fiber strand has a form kept by a first resin material having a glass transition temperature Tg or a melting point Tm of 40° C. to 200° C., the first resin material being heat-meltable, wherein the plurality of reinforcing fiber strands are bound and integrated with each other by a second resin material.

Abstract: A reinforced fiber sheet exhibits a stable shape and favorable bulking properties, a method of manufacturing same, and a fiber-reinforced resin molded body. The reinforced fiber sheet includes a plurality of reinforced fiber bundles arranged in one direction, wherein first and second reinforced fiber bundle layers, in which there is no direct binding force between reinforced fiber bundles within a layer, are disposed to have mutually distinct fiber orientations, and are integrally formed by being fastened together using fastening elements, satisfying conditions (i) and (ii): (i) fastening surfaces of the first and second reinforced fiber bundle layers have fastening sections that include at least one fastening element, and an average surface area S1 of 100 mm2; (ii) in the fastening sections, the surface area ratio of the fastening elements to the fastening section is 0.1% to 80%.