INJECTION-COMPRESSION MOLDING METHOD FOR PLASTIC GLAZING FOR USE AS AUTOMOTIVE GLASS

摘要

The present invention relates to an injection-compression molding method for plastic glazing for use as automotive glass, comprising: a first step (S1) for introducing a molten resin into a closed mold via an injection flow path; a second step (S2) for blocking the gate of the injection flow path after the molten resin has been introduced; a third step (S3) for compressing the molten resin by applying uniform pressure on the whole area thereof; a fourth step (S4) for cooling the compressed molten resin while maintaining the compressed state thereof; and a fifth step (S5) for opening the mold. When pressure is applied to the whole area of the molten resin, the molten resin can be prevented from flowing backward from the gate to the injection flow path, and the occurrence of pressure loss can be prevented, since the gate of the injection flow path is blocked after the molten resin has been introduced.