Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Anti-stick or adhesion preventing coating
Patent
1992-12-02
1995-08-22
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Anti-stick or adhesion preventing coating
264131, 264220, 264225, 264227, B28B 1106, B29C 3338, B29C 3356
Patent
active
054437741
ABSTRACT:
In order to manufacture low-weight, large-scale, artificial rocks resistant to weathering and faithfully rendered as in nature, first a malleable plastic reproduction is made of a natural-rock object. If called for, the reproduction is braced in a second method step, preferably by coating its back side with glass-fiber reinforced plastic. The work mold so manufactured receives a parting compound in a third operational step and thereupon preferably fiberglass mats are inserted and a coat of synthetic resin is applied to make a positive in the shape of a hollow artificial-rock blank. This artificial-rock blank is coated in a fourth operational step with a synthetic resin and fine-grain, preferably multicolored natural sand is deposited on or incorporated into the still moist coat of synthetic resin. Once this coat of synthetic resin with its incorporated natural sand has hardened, the artificial rock has been completed.
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Kluh Gorden
Precht Sven
Fa Felsdekor Kluh und Precht
Smith Duane S.
Woo Jay H.
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