Selective cooling of sheet to be embossed

Details Selective cooling of sheet to be embossed Selective cooling of sheet to be embossed

1978-06-26

1979-06-12

Lawrence, Evan K.

Coating processes

Measuring, testing, or indicating

118 69, 264284, 427264, 427374R, 427374D, 427398B, 427398D, B05D 500

Patent

active

041580702

ABSTRACT:
A mechanical embossing process wherein a web of material composed of a composite structure having at least a carrier and a thick foam layer to be embossed is heated in an oven to a temperature of 250.degree. F. to 350.degree. F. and thereafter cooled by wetting the carrier, which is the back surface of the web, to approximately 100.degree. F. below the top surface of the web prior to embossing of the foam. In certain areas of the web, hot spots may occur resulting in a top surface-back surface temperature of less than approximately 100.degree. F. Just prior to embossing, these hot spots are eliminated by selectively and intermittently cooling the back surfaces of the hot spot areas to obtain a top surface-back surface temperature difference of approximately 100.degree. F. The process is used for achieving multilevel mechanical embossing of a fused or cured wear layer in register with a print-on and expanded foam.

REFERENCES:
patent: 2928124 (1960-03-01), Hugger
patent: 3756844 (1973-09-01), Bunnell et al.
patent: 4070435 (1978-01-01), Lewicki, Jr. et al.

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