| 摘要 |
PROBLEM TO BE SOLVED: To provide an intermediate base material for molding a cylindrical fiber-reinforced plastic, the intermediate base material is easily adaptable even to a product having a shape with variable cross-section and peripheral length, and to provide a method for producing a fiber-reinforced plastic component including the intermediate base material.SOLUTION: The intermediate base material is used for molding a fiber-reinforced plastic and is composed of mixed fiber yarns in which at least part of fibers are provided by commingling reinforcing fibers consisting of continuous fibers with thermoplastic fibers consisting of continuous fibers, and is knitted into a shape having a hollow part extending cylindrically in a longitudinal direction, and has elasticity of ±15% or more in a circumferential direction. The method for producing a fiber-reinforced plastic component using the intermediate base material includes: preheating the intermediate base material to temperature that is equal to or higher than a melting point of a resin used for the thermoplastic fibers; arranging the preheated material in a molding before mold fastening at temperature lower than a solidification point of the resin; fastening the molding while applying pressure to the intermediate base material from inside; and cooling the intermediate base material through contact with the molding so as to solidify as a hollow component in which a cross-sectional shape varies in a longitudinal direction. |
