Diaphragm for speaker and method of producing same

Details Diaphragm for speaker and method of producing same Diaphragm for speaker and method of producing same

1980-09-24

1981-12-29

Chin, Peter

Paper making and fiber liberation

Processes and products

Article forming processes

162135, 162136, 162137, 162164R, 162166, 162177, 162201, 162221, 162223, 162224, 162231, 427304, 427305, 427306, 427404, 4274071, D21J 312

Patent

active

043080944

ABSTRACT:
A diaphragm for a speaker obtained by forming a diaphragm base by screen processing a mixture of carbon fiber, pulp and polyvinyl alcohol fiber as a binder in a manner similar to that employed for making paper, depositing a thermosetting resin on the diaphragm base by impregnation or coating, and subjecting the diaphragm base, on which the thermosetting resin has been deposited, to electroless plating to deposit a metal film in the interstices between fibers and on the entire fiber surface.

REFERENCES:
patent: 1700530 (1929-01-01), Holland
patent: 1715598 (1929-06-01), Hawley et al.
patent: 1829585 (1931-10-01), Dreyfus
patent: 2124330 (1938-07-01), Pascoe et al.
patent: 3930130 (1975-12-01), Buszor
patent: 3935924 (1976-02-01), Nagao et al.
patent: 4066804 (1978-01-01), Andrews

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