Metal Mold for Injection Molding of Framed Glass and Manufacturing Method for Framed Glass
AssigneeCentral Glass Company, Limited
InventorsOsamu Nakata, Mitsuhiro Takayama
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Abstract
Disclosed herein is an injection molding die used for producing a frame-mounted plate glass by injection molding. The die is characterized in that an auxiliary cavity is provided at a position to exposed a surface of a plate glass and communicated with a cavity for a frame through a communication opening, the cavity for the frame being provided at position facing a vehicle inside surface of the plate glass. When the die is practically used for injection molding, a load applied to a peripheral portion of the plate glass during the injection molding is reduced, so that when the frame is molded onto the plate glass by injection molding, undesired breakage of the plate glass is suppressed.
Claims5
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 being characterized in that an auxiliary cavity is provided at a position to expose a surface of the plate glass and communicated with a cavity for a frame through a communication opening, the cavity for the frame being provided at a position facing a vehicle inside surface of the plate glass.
An injection molding die as claimed in claim, which is further characterized in that a thickness of the auxiliary cavity is 1.0 to 5.0 mm.
Dependencies are inferred from the claim text.