FIELD: process engineering.
SUBSTANCE: invention relates to gypsum-bearing articles, particularly, to gypsum wall boards with low dusting. Boards feature large volume of pores corresponding to low density. They comprises gypsum core arranged between, in fact, parallel cover sheets. Note here that hardened gypsum core has definite pore distribution by sizes and is made from suspension including water, foam, stucco, pre-gelated starch and naphthalensulfonic dispersing agent.
EFFECT: decreased amount of dust in processing.
33 cl, 10 dwg, 7 tbl, 9 ex
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