Patent ID: 8846181
Filing Date: 2014-09-30
Classification: B29C,B29L,B60R,Y10T

Abstract:
1. A resin-made interior panel molded into a thin-plate shape defined by an injection molding die comprising a cavity die for forming a front surface side of the panel and a core die for forming a back surface side of the panel, one of which is a fixed die having a molten resin supply channel structure integrated therein and the other one of which is a movable die opposing thereto, the panel comprising: portions which correspond to undercut portions with respect to the die-cutting direction of the molding die in the original shape of the panel, said portions including on the back surface side of the panel corresponding to the core die a flat bottom portion having a shape which cancels an entire undercut space on the back surface side corresponding to the core die, and a rib structure on the front surface of the panel having a plurality of ribs projecting in a shape of plugging back an undercut space on the back surface side corresponding to the core die, the rib structure having a plurality of grooves extending from the flat bottom portion in a die-cut direction, and in which each rib in the rib structure has a shape integrally connected by a connecting portion at a portion corresponding to a central portion or a top end portion of the rib structure.