Injection molding of fiber reinforced articles

Details Injection molding of fiber reinforced articles Injection molding of fiber reinforced articles

1990-12-21

1992-10-20

Ryan, Patrick J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

428224, 428285, 428288, 428408, 428902, B32B 2736

Patent

active

051569078

ABSTRACT:
A method for molding fiber reinforced articles with superior mechanical properties by injection molding. The method comprises heating a mixture of molding compound and chopper fiber to produce highly viscous substance. Pressure is applied to force the substance through an elongated injection slot oriented perpendicular to the major axial dimension of the finished article, causing the fiber planes to become oriented in a unique whorled, accordion like manner. The unusual fiber plane orientation reinforces the article such that it is resistant to crack propagation.

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patent: 4780432 (1988-10-01), Minford et al.
patent: 4786304 (1988-11-01), Chen

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