Method for forming a layer of blown cellular urethane on a carpe

Details Method for forming a layer of blown cellular urethane on a carpe Method for forming a layer of blown cellular urethane on a carpe

1979-01-02

1983-09-20

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 79, 156 80, 156238, 156344, 264 462, 264243, 264257, 427244, 428 95, 428 97, 4283193, 4283044, B32B 3100, B32B 520

Patent

active

044053932

ABSTRACT:
A method of forming a layer of blown cellular urethane on a primary carpet backing comprising the steps of preparing a mixture of reactive urethane forming agents, controlling the temperature of the reactive mixture, shaping the reactive mixture into a layer upon a latex film, heating the urethane forming mixture to initiate chemical blowing of the mixture, applying the underside of a previously tufted and heated primary carpet backing directly to the upper surface of the mixture, heating the mixture to a predetermined temperature, applying pressure to the carpet and mixture and stripping the carpet and cellular urethane layer from the conveyor belt.

REFERENCES:
patent: 3269882 (1966-08-01), Willy
patent: 3328225 (1967-06-01), Urbanic et al.
patent: 3519526 (1970-07-01), Carey et al.
patent: 4035529 (1977-07-01), Meisert et al.
patent: 4078100 (1978-03-01), Doerfling
patent: 4132817 (1979-01-01), Tillotson

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