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

1978-01-25

1979-01-02

McCamish, Marion E.

Coating processes

Foraminous product produced

Filter, sponge, or foam

427314, 427316, 427322, 427373, 428 95, 428 97, 428310, 428425, B05D 500

Patent

active

041328175

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: 3519526 (1970-07-01), Carey
patent: 4035529 (1977-07-01), Meisert
patent: 4078100 (1978-03-01), Doerfling

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