PURPOSE: To enhance the high dimensional accuracy by a method wherein expandable resin sheet is wound round the periphery of a core and further resin- impregnated fiber is piled outside onto the sheet and the resultant assembly is charged in a female mold and heated and hardened.
CONSTITUTION: Expandable resin sheet 2 is wound on a core 1 and further resin-impregnated fiber 3 is laminated onto the sheet. After that, the resultant assembly is charged in a female mold 4 and heated. By heating, the expandable resin sheet 2 expands and set, resulting in pushing the resin-impregnated fiber 3 against the inside of the female mold 4 so as to produce three dimensional structural member. Thus, member favorable in dimensional accuracy and external appearance can be manufactured with a simple manufacturing process.
TSUJI NOBUYUKI
MAIKUMA HIRONORI
KUBOMURA KENJI
