WALL BOARD FOR INTERIOR FINISHING OF PREMISES AND METHOD OF ITS MANUFACTURING Russian patent published in 2011 - IPC E04C2/26 B32B13/02 

FIELD: construction.

SUBSTANCE: gypsum wall board suitable for fine finish of the 4^th level contains a facing material in the form of the first nonwoven glass fibre mat with coating on one main surface, and the second glass fibre mat with coating on the other main surface applied optionally. The first glass fibre mat contains fibres, most of which has a rated diametre of fibre from 8 to 11 micron and length of fibre from 0.635 cm to 1.905 cm (from 1/4 to 3/4 inch), and also has the main weight approximately from 0.083 kg/sq.m. to 0.098 kg/sq.m. (from 1.7 pound/100 sq. feet to 2.0 pound/100 sq. feet). The first glass fibre mat contains fibres, most of which have a rated diametre of fibre of at least 13 micron but not more than approximately 16 micron and length of fibre from approximately 1.905 cm to 2.54 cm (from 3/4 to 1 inch), and also has the main weight approximately from 0.0879 kg/sq.m. to 0.1074 kg/sq.m. (from 1.8 pound/100 sq. feet to 2.2 pound/100 sq. feet), besides, fibres in both nonwoven glass fibre mats are glued together with the help of the acrylic adhesive binder.

EFFECT: reduced buckling with sufficient bending strength.

18 cl, 2 dwg, 1 tbl, 1 ex