GYPSUM BOARD PANELS AND METHODS FOR PRODUCTION THEREOF Russian patent published in 2014 - IPC C04B28/14 

FIELD: chemistry.

SUBSTANCE: invention relates to gypsum board panels which contain a novel binding substance, and methods of making such panels. The binding substance meant for use in making gypsum board panels contains starch material, having: (i) cold suspension viscosity of not more than 250 mPa·s; (ii) maximum viscosity of not more than 600 BU; and (iii) water retention of not more than 90 g/m². Said binder is used in the core of the gypsum board panel, which includes core material and one or more sheets of reinforcing material. The gypsum board panel is made using a method involving: a) mixing material selected from a group consisting of plaster material or gypsum material with water and said binding substance to obtain a suspension; b) shaping the suspension into a panel; and c) drying the panel.

EFFECT: high mechanical strength.

13 cl, 1 tbl, 1 ex