Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1979-09-28
1981-08-18
Van Balen, William J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428298, 428310, 428313, 428317, 4284228, B32B 520, B32B 526, B32B 528
Patent
active
042846838
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 straight 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 straight glass fibers with a foam-forming mixture on each face of the mat, and passing the facing sheets having the mat and the foam-forming mixture there between through the nip of two rotating rolls.
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Hagan Joseph R.
Hipchen Donald E.
Skowronski Michael J.
Grace James W.
Murphy David R.
The Celotex Corporation
Van Balen William J.
Vanecek Charles W.
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