SEED CRYSTAL COATING FOR GYPSUM WALLBOARD FACING

摘要

Facing material useful in the manufacture of gypsum wallboard is surfaced treated in order to adhere an amount of seed crystals to improve the adhering affinity of the facing material for wet plaster thereby permitting the manufacture of gypsum wallboard with little or no added starch and reduced amounts of water. Various means for adhering the seed crystals to the facing material are described as well as, a method of converting the facing material and wallboards containing the facing material are also described.