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Method for manufacturing speaker-use center cap

  • US 7,290,639 B2
  • Filed: 05/16/2005
  • Issued: 11/06/2007
  • Est. Priority Date: 05/18/2004
  • Status: Expired due to Fees
First Claim
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1. A method for manufacturing a speaker-use center cap in a multi-layer structure provided with a first cap member layer of synthetic resin molded in a predetermined shape by injection molding and a second cap member layer layered in intimate contact with the first cap member layer and made of a material different from that of the first cap member layer, the method comprising:

  • a pre-molding step of attaching a non-molded sheet-like material which is a raw material of the second cap member layer to a mating surface of one of die parts of an injection molding die and thereafter closing the injection molding die to apply a predetermined cap shape to the sheet-like material; and

    an injection molding step of injecting the synthetic resin material into the injection molding die closed by the pre-molding step to form the first cap member layer to be intimate contact with the second cap member layer.

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