Method of molding an acoustic diaphragm part of para aromatic po

Details Method of molding an acoustic diaphragm part of para aromatic po Method of molding an acoustic diaphragm part of para aromatic po

1993-02-26

1994-02-01

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

26433112, B29C 4304

Patent

active

052830276

ABSTRACT:
An acoustic diaphragm is manufactured from a film of para-orientation aromatic polyamide through a molding process. In the molding process, the die for the molding process is heated to a predetermined temperature and then the molding press is conducted onto the film of para-orientation aromatic polyamide. The combination of the dies and film are cooled into about 80.degree. C. and then the clamping of dies is released to take the pressed film off.

REFERENCES:
patent: 4315557 (1982-02-01), Nakaya et al.
patent: 4752643 (1988-06-01), Imanishi et al.
patent: 4857255 (1989-08-01), Imanishi et al.
patent: 5066351 (1991-11-01), Knoll

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