MANUFACTURE OF PRODUCT MADE OF FRP CONTAINING CONTINUOUS LONG-SIZED FIBER

PURPOSE:To mold a product having a complicated form easily, by a method wherein a meshy cylinder is formed by winding reinforced fiber roving around a wind-up core and the meshy cylinder is molded with a molding tool by heat-treating the meshy cylinder. CONSTITUTION:Reinforced fiber roving 2a into which a resin solution has been infiltrated/stuck is wound round the external circumference of a wind-up core 1 for formation of a meshy cylinder 2. The meshy cylinder 2 is removed from the core 1 under a state where the resin solution possesses flexibility while the same holds a form of the meshy cylinder 2. The meshy cylinder 2 is molded by performing heat treatment under a state where the meshy cylinder 2 is bent into a desired form by a molding tool 3. The core 1, for example, is provided with a core bar 1a of a hexagonal cross section and three supporting rods 1b, 1c, 1d of the hexagonal cross section and the supporting rods 1b, 1c, 1d each possess notches 1e. The core bar 1a and supporting rods 1b, 1c, 1d are in a bundled state, over both ends of which snap rings 1f are fitted and the core 1 is assembled. Winding of the roving 2a is guided by the notch 1e. The ring 1f is removed, the core bar 1a is pulled out, the supporting rods 1b, 1c, 1d each are beaten by facing to the center part and the meshy cylinder 2 is released from the mold.