Method and apparatus for forming a layer of foam urethane on a c

Details Method and apparatus for forming a layer of foam urethane on a c Method and apparatus for forming a layer of foam urethane on a c

1977-03-30

1979-10-16

McCamish, Marion E.

Stock material or miscellaneous articles

Pile or nap type surface or component

Particular backing structure or composition

156 72, 156 79, 156322, 156499, 156543, 156555, 428 97, 428310, 428315, 428425, B32B 302

Patent

active

041713958

ABSTRACT:
A method of forming a layer of blown cellular urethane on a carpet backing comprising the steps of providing a mixture of reactive urethane forming agents, shaping the reactive mixture into a layer upon a latex film, applying the underside of a heated carpet backing directly to the layer of reactive mixture, and heating the layer of reactive mixture to expedite reaction of the reactive mixture and chemical blowing of the reactive mixture into an enlarged layer of cellular urethane on the carpet backing between the backing and the latex film. Apparatus for performing the method is disclosed as is the resultant product.

REFERENCES:
patent: 3519526 (1970-07-01), Carey
patent: 3679469 (1972-07-01), Moore
patent: 3700515 (1972-10-01), Terry
patent: 3705834 (1972-12-01), Terry
patent: 3975562 (1976-08-01), Madebach

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