Title:
PRODUCTION OF PLASTER BOARD MADE BY USING COATED PAPER FOR PLASTER BOARD
Document Type and Number:
Japanese Patent JPS53122806
Kind Code:
A
Abstract:
A composition comprising water, finely particulate gypsum and starch is coated on a paper cover sheet in a selective pattern such that the starch composition is disposed only at limited areas of the bond liner surface, and wherein substantial areas of the bond liner surface are free of the coating; the coated paper, either in the wet stage or after drying being used as paper cover sheets to form gypsum wallboard by applying an aqueous slurry of calcined gypsum, which may be free of starch, 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.
Inventors:
UIRIAMU JIEI RONGU
Application Number:
JP1665178A
Publication Date:
October 26, 1978
Filing Date:
February 17, 1978
Export Citation:
Assignee:
UNITED STATES GYPSUM CO
International Classes:
D21H19/54; E04C2/04; B32B13/08; (IPC1-7): B32B13/08; D21H1/24; E04C2/26
Domestic Patent References:
| JPS49121821A | 1974-11-21 | |||
| JP42027676A | ||||
| JP42027679A |