Method for embossing mineral fiber board

Details Method for embossing mineral fiber board Method for embossing mineral fiber board

1976-10-20

1978-02-14

Rader, Ralph T.

Printing

Embossing or penetrating

Processes

101 21, B44C 124

Patent

active

040732304

ABSTRACT:
A method for surface embossing mineral fiber sheets, comprising mineral fibers, perlite and binders, is disclosed. A liquid, preferably water, is sprayed on the surface of the board to be embossed and the wet surface is compressed at an elevated temperature of from 550.degree. to 750.degree. F for about 0.1 to about 2 seconds. The elevated temperature rapidly forms steam which penetrates the sheet surface to be embossed by the simultaneous application of pressure.

REFERENCES:
patent: 2551005 (1951-05-01), Johnson
patent: 2703463 (1955-03-01), McElroy
patent: 2803188 (1957-08-01), Duvall

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