Method of preparing composition board with improved polymeric sk

Details Method of preparing composition board with improved polymeric sk Method of preparing composition board with improved polymeric sk

1976-06-07

1978-04-11

Klein, David

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156278, 428530, B32B 2742

Patent

active

040837440

ABSTRACT:
A process for preparing a flexible, cured sheet material, the sheet material so prepared, and in particular composition boards with the sheet material as a surface covering, which process comprises: providing a first thin fibrous sheet material impregnated with a curable thermosetting resin; placing onto one surface of the first sheet material a second flexible fibrous sheet material which is capable of absorbing an adhesive material; and subjecting the first and second sheet materials to a high pressure of over about 20 kilos per centimeter square at a thermosetting resin-curing temperature, and for a period of time to bond the surface of the second sheet material to the contacting surface of the first sheet material by the cured resin. The thin sheet material is characterized by a hard, resin-cured surface and capable of absorbing an adhesive material. The sheet is bonded by contact pressure to a composition board surface with an adhesive layer thereon, which adhesive layer is absorbed into the sheet material.

REFERENCES:
patent: 2219447 (1940-10-01), Groff
patent: 3620899 (1971-11-01), Kelly et al.
patent: 3853686 (1974-12-01), Clendenin
patent: 3995090 (1976-11-01), Clendenin

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