INJECTION-MOLDING DIE AND IN-MOLD MOLDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an injection-molding die which certainly holds down a continuous film with the following achievements: a foreign substance is prevented from finding its way into a cavity; the deterioration of the yield due to a dent or the like is minimized; the correct positioning of the continuous film is ensured; the continuous film is prevented from sagging during releasing it; a peeling line formed by the sagging of the continuous film is prevented from occurring; and the continuous film is held down in a timely manner and used for double-sided transfer.;SOLUTION: The injection-molding die comprises a cavity-side half 3 and a movable half 4, on the parting face 4a of at least either of which the continuous film passes. In addition, the die has a set of pressing plates 40 and 41 which are arranged at the forward end part and the rear end part of the die respectively, in a direction where the continuous film 14 passes and straddle the continuous film 14 in the width direction, allowing the passage of the film 14 between the parting faces 4a of the die and air cylinders 42 and 43 which separate the pressing plates 40 and 41 from the die and bring the plates 40 and 41 into contact with the latter independently of the operation to open/close the die.;COPYRIGHT: (C)2004,JPO