Method of forming moulded articles

Details Method of forming moulded articles Method of forming moulded articles

1975-04-14

1976-06-22

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

264129, 264245, 264293, 264317, 264321, 264333, 264337, 264338, 427133, 427336, B28B 1104

Patent

active

039652335

ABSTRACT:
A method of producing a moulded article from concrete or the like comprising; having at least a portion of a mould formed of expanded polystyrene; treating the moulding face of the expanded polystyrene to form a textured and/or patterned surface; applying a colored composition to the moulding face of the expanded polystyrene; filling the mould with concrete or the like; upon the solidification of the concrete or the like, applying an organic solvent to the expanded polystyrene, wherein a portion of the solution of the solvent and polystyrene is caused to remain on the moulded article, the amount of solution remaining upon the moulded article being controlled by the amount of solvent applied to the expanded polystyrene; permitting the solvent to evaporate from the solution remaining on the moulded article to form a colored glazed finish upon the moulded product.

REFERENCES:
patent: 3506749 (1970-04-01), Weissman

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