| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for molding a thin molding having a thickness of 0.1 to 1 mm to bring about a molding fault even by using normal thermoplastic resin. SOLUTION: The method for molding the molding uses first and second molds 10, 11, melted resin injecting unit 14 for injecting melted resin in a cavity 15, an insert 16 disposed at least one of the molds 10, 11 and manufactured by inorganic material having a thickness of 0.5 to 10 mm, elastic modulus of 0.8×10<6> kg/cm<2> or more and thermal conductivity of 0.2 to 2×10<-2> cal/ cm.sec.deg, and mold assembly for satisfying L<=kiαt0 <2> (L>=3), where t0 (unit: mm) denotes a distance of the cavity 15 when the mold is clamped, ki denotes fluid coefficient (1.5<=ki <=10),αdenotes flow index (40<=α<=800), and L (unit: mm) denotes a distance from part of the cavity 15 disposed at the farthest place from a melted resin injecting unit 14 to the unit 14, and comprises the step of injecting melted thermoplastic resin from the unit 14 in the cavity 15. |
