Method for manufacturing speaker-use center cap

Details Method for manufacturing speaker-use center cap Method for manufacturing speaker-use center cap

2007-11-06

2007-11-06

Donovan, Lincoln (Department: 2837)

Acoustics

Diaphragm

Critically defined material or coating

C264S275000, C264S277000, C264S271100, C264S272160

Reexamination Certificate

active

11129380

ABSTRACT:
A method is for manufacturing a speaker-use center cap provided with a first cap member layer of synthetic resin 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 includes: 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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patent: 7-111695 (1995-04-01), None
patent: 2000-004496 (2000-01-01), None
patent: 2003-52100 (2003-02-01), None

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