Bumper preform and method of forming same

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

1995-01-12

1996-05-28

Johnstone, Adrienne C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156245, 156267, 156285, 264112, 264118, 264121, 264163, 264258, 264309, 264517, 293102, 293120, B29B 1106, B29B 1116, B29C 7030, B60R 1903

Patent

active

055207588

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: 2577205 (1951-12-01), Meyer et al.
patent: 2929436 (1960-03-01), Hampshire
patent: 2983303 (1961-05-01), Voss
patent: 3177275 (1965-04-01), Brenner
patent: 4477243 (1984-10-01), Wallsten
patent: 5182065 (1993-01-01), Piotrowski et al.
patent: 5294394 (1994-03-01), Sakai et al.

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