Process of producing preforms containing light weight filler par

Details Process of producing preforms containing light weight filler par Process of producing preforms containing light weight filler par

1997-03-20

1998-09-29

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Removal of liquid component or carrier through porous mold...

264257, 264DIG26, 162116, 162141, 162145, 162146, 162148, 428373, D21J 700

Patent

active

058142568

ABSTRACT:
A method and apparatus of producing and using composite fibers in a liquid molding process. The composite fibers are formed from a base material and filler particles which are lighter or less expensive than the base material. A preform screen is placed at the bottom of a tank. The tank is filled with liquid, the composite fibers and a mass of reinforcing fibers creating a slurry above the screen. The screen is raised up through the slurry causing the composite fibers and the reinforcing fibers to be deposited on the screen creating a fiber preform. The preform is then removed from the screen and is placed in a mold for use in a liquid molding process.

REFERENCES:
patent: 2612679 (1952-10-01), Ladisch
patent: 4740346 (1988-04-01), Freeman
patent: 4849147 (1989-07-01), Freeman
patent: 4863771 (1989-09-01), Freeman
patent: 5039465 (1991-08-01), Freeman
patent: 5091252 (1992-02-01), Hruska
patent: 5286326 (1994-02-01), Greve

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