Patent ID: 8992209
Filing Date: 2015-03-31
Classification: B29C

Abstract:
1. An injection molding die used for producing, by injection molding, a frame-mounted plate glass that comprises a plate glass and a plastic frame integrally molded to a peripheral portion of the plate glass, the injection molding die comprising: a lower die that is set to face a vehicle inside surface of the plate glass; an upper die that is set on the lower die in a manner to face a vehicle outside surface of the plate glass; and a series of a cavity, an auxiliary cavity and a narrowed communication opening of the lower die arranged to face the peripheral portion of the plate glass when the plate glass is set between the lower and upper dies, wherein the narrowed communication opening is arranged between the cavity and the auxiliary cavity to communicate between the cavity and the auxiliary cavity, wherein the cavity, the auxiliary cavity and the narrowed communication opening overlap the peripheral portion of the glass plate in a direction perpendicular to the vehicle inside surface of the plate glass, wherein the auxiliary cavity and the narrowed communication opening are arranged to expose only to the vehicle inside surface of the plate glass, wherein an end of the narrowed communication opening adjacent to the cavity is located away from an outer edge of the plate glass a distance greater than twice a thickness of the narrowed communication opening in a direction perpendicular to the vehicle inside surface of the plate glass, and a ratio (w