Method and composition for forming a plaster object
OwnerAllen A. Greenberginventor
Life of this patent
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Abstract
Formation of toy figurines from tap water and a molding powder mixture of calcium sulphate hemihydrate with xanthan gum in a shaker molding assembly. The molded article dries into a porous lightweight object. The materials are non-toxic.
Claims7
A method of forming a molded plaster object which comprises mixing together approximately 100 parts by weight of water and 60-90 parts by weight of a molding powder by weight, said molding powder comprising calcium sulphate hemihydrate and finely divided xanthan gum in quantities of from 0.25%-1.5% by weight of the molding powder thereof placing the mixture in a mold, allowing the mixture to solidify in said mold, removing the solidified, shaped mixture from the mold, and allowing same to dry to form a porous, low-density plaster object.
A molding powder consisting essentially of 0.25-1.5% by weight of finely divided Xanthan gum, 0-7.5% K.sub.2 SO.sub.4, 0-15% CaSO.sub.4.2H.sub.2 O, and the balance CaSO.sub.4.1/2H.sub.2 O.
Dependencies are inferred from the claim text.