Polyisocyanurate foam laminate and process

Details Polyisocyanurate foam laminate and process Polyisocyanurate foam laminate and process

1978-09-11

1980-05-20

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

156 79, 428313, 428314, 428315, 4284228, 521902, B32B 326, B32B 520, B32B 3114

Patent

active

042040191

ABSTRACT:
A polyisocyanurate foam laminate produced by admixing a polyisocyanate component and a polyol component and coating the mixture between two flexible sheet substrates. The three-layered laminate is then passed between two substantially immovable barriers which restrict the expansion of the laminate caused by foaming of the reaction mixture as a result of the evaporation and entropment of a blowing agent within the polyisocyanurate closed cell structure. Thus, a board is produced with excellent flame spread and dimensional characteristics suitable for use as insulation in steel deck construction.

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