Method for continuous manufacture of foam boards with isocyanate

Details Method for continuous manufacture of foam boards with isocyanate Method for continuous manufacture of foam boards with isocyanate

1993-09-27

1994-10-04

Welsh, Maurice J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

427209, 427339, 427340, 427373, 4283111, 4284251, C08G 1808

Patent

active

053525108

ABSTRACT:
A method for the manufacture of paper faced foam which comprises (a) applying a foam-forming mixture to at least one advancing cellulosic sheet or composite thereof with an air- and/or moisture-impermeable material, the cellulosic sheet (i) being impregnated with cured polyisocyanate, (ii) being sufficiently flexible for unwinding from a roll for conveyance along a production line and (iii) having a moisture content which does not exceed about 10 percent and is evenly distributed throughout the cellulosic sheet, and (b) foaming and curing the faced foam-forming mixture.

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patent: 5220760 (1993-06-01), Dimakis

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