Rigid composite articles

Details Rigid composite articles Rigid composite articles

1977-12-07

1979-05-15

Ansher, Harold

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428217, 428220, 428297, 428404, 428417, 428425, 428539, 428908, B32B 2740, B32B 2738, B32B 1302

Patent

active

041548884

ABSTRACT:
Rigid composite articles comprising a relatively thin, impression-retaining surface formed of a hard, rigid, room-temperature cured urethane resin and a relatively thick backing and reinforcing are made by casting a thin layer of urethane resin on the surface of a master, curing the urethane, then casting thereon a relatively thick backing layer of a casting material such as plaster or resin.

REFERENCES:
patent: 3276947 (1966-10-01), Waterman
patent: 3300370 (1967-01-01), Epstein et al.
patent: 3668058 (1972-06-01), Pappadakis
patent: 4017556 (1977-04-01), Wang
patent: 4018941 (1977-04-01), Tucker
patent: 4061815 (1977-12-01), Poole

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