B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
154/113, 117/161
B32B 5/20 (2006.01) A47G 27/02 (2006.01) B29D 27/04 (1980.01) B32B 31/08 (1980.01)
Patent
CA 1122506
ABSTRACT OF THE DISCLOSURE 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.
296102
Meredith & Finlayson
Tillotson John G.
LandOfFree
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