RESIN MOLDING AND MANUFACTURE THEREOF

摘要

PURPOSE:To preferably cut a disc gate without retaining burrlike broken pieces by providing a resin cut portion at the curved surface of a circular plate. CONSTITUTION:A disc gate 9 of a connector of molded portion 7 made of resin for molding the outer periphery 2a of a circular plate 2 with a runner 8 is disposed on the curved surface 2b of a boundary between the outer periphery 2a and the upper surface 2c of the plate 2. The gate 9 provided on the curved surface 2b has a V-shaped sectional groove so that the angle theta formed between the axial direction of the plate 2 and the molded portion 7 of the groove is set, for example, to 30 deg.. The portion 7 is cut by the gate 9.