Structural laminate and method for making same

Details Structural laminate and method for making same Structural laminate and method for making same

1981-05-22

1982-08-24

Van Balen, William J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including grain, strips, or filamentary elements in...

428110, 428159, 428160, 428172, 428213, 4283179, 4283191, 4283073, B32B 520, B32B 526, B32B 528

Patent

active

043461336

ABSTRACT:
A structural laminate comprises at least one planar facing sheet with a rigid foam attached to one surface of the facing sheet. The rigid foam may be any polymeric material which is capable of being foamed. Distributed substantially evenly throughout the foam is a mat of long glass fibers arranged in layers substantially parallel to the facing sheet. The process for producing this structural laminate comprises the steps of contacting a thin, substantially incompressible yet expansible mat of long glass fibers with a foam-forming mixture, positioning a facing sheet on each face of the mat, and passing the facing sheets having the mat and the foam-forming mixture therebetween through means for metering the amount of foam-forming mixture and causing it to fully penetrate between the fibers of said glass mat.

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Modigliani, Piero, "Glasurethane--A New Dimension in Reinforced Plastics," Reinforced Plastics/Composites Division, the Society of the Plastics Industry, Inc., 25th Annual Technical Conference, Section 8-C, pp. 1-2, 1970.
Modigliani, Piero, "Reinforced Urethane Foam," Modern Plastics Encyclopedia, p. 282, 1972-1973.

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