TWO-COLOR MOLDING/AND MOLD APPARATUS FOR TWO-COLOR MOLDING AND METHOD FOR TWO-COLOR MOLDING

摘要

PURPOSE: To form a transparent window respectively on a base panel part and a side panel part of a base of a cassette tape storing case. ;CONSTITUTION: Besides a fixed side mold member 21 and a movable side mold member 22, three slide cores 24, 25 and 26 are provided. The first slide core 24 and the third slide core 26 are movable in the direction crossing at right angles to a base panel part and the second slide core 25 is movable in the direction crossing at right angles to a side panel part. The first cavity 41 is formed by closing transparent windows and a communication part therefor in the cavity by using the side cores 24, 25 and 26. After the first resin is filled in the first cavity 41, corresponding parts to the transparent window and the communicating part are opened to form the second cavity. The second resin is filled in the second cavity. It is therefore possible to form transparent windows on both the base panel part 11 and the side panel part 12 by using one mold with a simple structure.;COPYRIGHT: (C)1993,JPO&Japio