METHOD AND DEVICE FOR DESIGNING PREFORM

摘要

PROBLEM TO BE SOLVED: To materialize molding which can obtain a molding excellent in strength and molding stability and to reduce manhours and expense necessary for the design and trial manufacture of a mold. SOLUTION: Since the wall thickness distribution of a molding can be controlled generally by the shape of a preform, by designing the shape of a preform to obtain an aimed wall thickness distribution of a molding, manhours and expense necessary for the design and trial manufacture of the mold for molding the preform are reduced.