Method for the production of a decorative gypsum board

Details Method for the production of a decorative gypsum board Method for the production of a decorative gypsum board

1973-06-06

1976-02-24

Drummond, Douglas J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Weight per unit area specified

156 44, 156 45, 156277, 428425, 428537, 428538, B32B 3112

Patent

active

039405419

ABSTRACT:
In the production of decorative gypsum board, wherein a hemihydrate gypsum slurry is continuously injected between decorative gypsum board card paper and conventional gypsum board card paper and the thus slurry-injected sheets are pressed by a suitable means to form the sheets in a predetermined thickness and then dried to form the decorative gypsum board, the improvement comprising coating with an urethane resin solution over decorative low-weight basis paper such as tissue paper or machine glazed white paper, drying the coated paper and laminating the resultant paper to a gypsum board card paper to obtain said decorative gypsum board card paper.

REFERENCES:
patent: 3616144 (1971-10-01), Kenney
patent: 3660187 (1972-05-01), Shortway et al.
patent: 3677874 (1972-07-01), Sterrett et al.
patent: 3694298 (1972-09-01), Veschuroff et al.
patent: 3798098 (1974-03-01), Ogawa et al.

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