Bumper preform and method of forming same

Details Bumper preform and method of forming same Bumper preform and method of forming same

1992-04-29

1993-09-28

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428 74, 428236, 428251, 428273, 428285, 428903, 264120, 264265, 264266, 5253276, 5253278, 5253295, 5253296, B32B 104, B32B 302, B32B 1710

Patent

active

052485510

ABSTRACT:
A process for producing a reinforced plastic motor vehicle bumper includes the steps of placing a woven roving (17) on a center section of a preform screen (10) that is retained by a vacuum draw from a suction fan (16). Chopped glass fibers (20) and a curable binder are sprayed onto the preform screen and woven roving. A second layer (22) of woven roving is placed onto the center section of chopped glass and first layer (17) of woven roving. Either the excess trim (39) is trimmed by a cutting die (50) before the preform is cured or the die is first cured and then the excess trim is trimmed by a cutter using a plastic base (35) in the screen that circumscribes the contoured section of the preform screen.

REFERENCES:
patent: 2719350 (1955-10-01), Slayter et al.
patent: 2956916 (1960-10-01), Voss et al.
patent: 3170197 (1965-02-01), Brenner
patent: 4117067 (1978-09-01), Charter et al.
patent: 4745028 (1988-05-01), Das et al.
patent: 5009821 (1991-04-01), Weaver

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