Fireproof laminates

Details Fireproof laminates Fireproof laminates

1979-08-20

1981-03-17

Van Balen, William J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428313, 428444, 428920, 428921, B32B 520

Patent

active

042567998

ABSTRACT:
A fireproof laminate passing Grade 2 incombustibility according to Japanese Industrial Standard (JIS) A-1321 combustion test is disclosed. The laminate comprises a urethane modified polyisocyanurate foam as a core material and particular surface materials piled on both sides of the foam through self-adhesion of the foam and has a density of the core material of 0.02-0.04 g/cm.sup.3 and a total thickness of not more than 30 mm.

REFERENCES:
patent: 2151024 (1939-03-01), Gilbert
patent: 3814659 (1974-06-01), Nadeau
patent: 3940517 (1976-02-01), De Leon
patent: 4054710 (1977-10-01), Botsolas
patent: 4067833 (1978-01-01), Austin et al.
patent: 4073997 (1978-02-01), Richards et al.
patent: 4118533 (1978-10-01), Hipchen et al.
patent: 4121958 (1978-10-01), Koonts
patent: 4189541 (1980-02-01), Ohashi et al.
patent: 4205136 (1980-05-01), Ohashi et al.

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