Contouring gypsum articles

摘要

An improved process for forming cast articles of plaster reinforced with fibers is disclosed wherein low consistency plaster slurries that include a fluidizing agent and fibrous reinforcing materials are co-sprayed onto a sectionalized casting bed having a flexible membrane section connecting rigid sheet forming bed portions; allowed to stand in a horizontal position through initial stiffening; and then before the slurry has set, the sectionalized casting bed is reformed so as to produce a contoured shape to the gypsum cement sheet.