Polymeric adhesive-coated paper and gypsum wallboard prepared th

Details Polymeric adhesive-coated paper and gypsum wallboard prepared th Polymeric adhesive-coated paper and gypsum wallboard prepared th

1978-06-22

1980-03-25

Dixon, Jr., William R.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

156;44, 428211, 428219, 428513, 428538, B32B 714, B32B 3112

Patent

active

041951093

ABSTRACT:
A composition comprising an aqueous suspension of a polymeric adhesive composition such as a latex or emulsion is coated on a paper cover sheet in a selective pattern such that the composition is disposed only at limited areas of the bond liner surface, and wherein substantial areas of the bond liner surface are free of coating; the coated paper, either in the wet stage or after drying being used in the form of paper cover sheets to form gypsum wallboard by applying an aqueous slurry of calcined gypsum, which may be free of any additional adhesive material, to the coated surface and setting the gypsum, resulting in a gypsum wallboard having excellent adhesion between the paper cover sheets and the gypsum core.

REFERENCES:
patent: 3887748 (1975-06-01), Swedenberg et al.
patent: 4009062 (1977-02-01), Long
patent: 4117183 (1978-09-01), Long
patent: 4119752 (1978-10-01), Long

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