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

1986-05-21

1987-12-29

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156238, 156322, 156324, 264 462, 427244, 4283193, B32B 3100, B32B 520

Patent

active

047159120

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: 3251092 (1966-05-01), Printz
patent: 3821067 (1974-06-01), Taylor et al.
patent: 4096303 (1978-06-01), Doerfling
patent: 4132817 (1979-01-01), Tillotson
patent: 4171395 (1979-10-01), Tillotson
patent: 4372900 (1983-02-01), Doerfling
patent: 4405393 (1983-09-01), Tillotson
patent: 4512831 (1985-04-01), Tillotson

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