Abstract: A prepreg laminate is described that is a fiber-reinforced plastic material having high rigidity, lightweight properties and excellent moldability, where the prepreg laminate is obtained by a prepreg (A), in which non-continuous reinforcing fibers are impregnated with a thermosetting resin or thermoplastic resin, and a prepreg (B), in which non-continuous reinforcing fibers are impregnated with a thermoplastic resin, being laminated adjacent to each other, and by the prepreg (A) being disposed on at least one surface, at least some combinations of the prepreg (A) and the prepreg (B) adjacent to each other forming an overlap region that satisfies at least one of the requirements (1) and (2) as defined.

Abstract: A fiber-reinforced plastic capable of coping with a more complicated shape while maintaining lightweight properties and mechanical properties is provided, where a thermoplastic prepreg is obtained by impregnating a discontinuous reinforcing fiber web impregnated with a thermoplastic resin, the thermoplastic prepreg satisfying at least one of the following features (A) or (B): feature (A): a plurality of incisions cutting at least a part of discontinuous reinforcing fibers constituting the discontinuous reinforcing fiber web; and feature (B): a fiber length variation region in which a coefficient of variation in fiber length of the discontinuous reinforcing fibers constituting the discontinuous reinforcing fiber web is 40% or more.

Abstract: An object is to provide an incised prepreg having desired formability stably, wherein the incised prepreg contains unidirectionally oriented reinforcing fibers and matrix resin and has an incised region containing a plurality of incisions made to divide reinforcing fibers, wherein the incised region includes a plurality of incision rows, each containing a plurality of incisions having nearly equal fiber-directionally projected lengths and aligned at substantially constant intervals in the fiber direction and wherein the distance L1, measured at right angles to the fiber direction, between two incision rows located on either side of an arbitrarily selected incision row and the fiber-directionally projected length L2 of the latter incision row satisfy the following relation: ?1.0<L1/L2<0.5.

Abstract: A process is capable of producing a high-quality fiber-reinforced plastic with good yield in a short molding cycle time despite being atmospheric pressure molding. The process characterized uses local contact heating to give different temperature conditions to produce a fiber-reinforced plastic by atmospheric pressure molding from a fiber-reinforced material which contains a reinforcing fiber impregnated with a thermosetting resin composition.

Abstract: A process is capable of producing a high-quality fiber-reinforced plastic with good yield in a short molding cycle time despite being atmospheric pressure molding. The process characterized uses local contact heating to give different temperature conditions to produce a fiber-reinforced plastic by atmospheric pressure molding from a fiber-reinforced material which contains a reinforcing fiber impregnated with a thermosetting resin composition.