Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...
Patent
1977-04-18
1978-04-25
Hoag, Willard E.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Coating or impregnating workpiece before molding or shaping...
4421, 264 73, 264247, 264255, 264259, 264265, 427385C, 428446, B29C 500, B29C 2500, B29G 700
Patent
active
040863182
ABSTRACT:
The invention is a molding process adapted for the production of plumbing fixtures, such as a toilet whose functional surfaces are resistant to erosion by moving water wherein a ceramic shell forms a liner having external surfaces and the functional surfaces of the plumbing fixture. In the case of the toilet the ceramic shell includes a bowl, a siphon trap and a water flush ring. The molding process includes the steps of coating the external surfaces of the ceramic shell with a layer of resilient material and then suspending the ceramic shell upside down within a female mold member having internal surfaces so that the internal surfaces of the female mold member are slightly spaced from the external surfaces of the ceramic shell thereby leaving a gap between the internal surfaces of the female mold member and the external surfaces of the ceramic shell. The molding process also includes the steps of filling the gap with a catalyzed polyester resin matrix mixed with a filler and pigments and permitting the matrix to bond and to cure to the coated external surfaces of the ceramic shell. The molding process further includes the step of removing the female mold member thereby producing a plumbing fixture, such as a toilet, that has an attractive exterior appearance which matches other plumbing fixtures to be used in the same room in both their color texture and their design.
REFERENCES:
patent: 2657153 (1953-10-01), Russell
patent: 3060608 (1962-10-01), Stahmann
patent: 3172775 (1965-03-01), Shaines
patent: 3212106 (1965-10-01), Noel
patent: 3575916 (1971-04-01), Bockstie
patent: 3607606 (1971-09-01), Beninga
patent: 3660214 (1972-05-01), Nichols
patent: 3664799 (1972-05-01), Wallick et al.
Garasi Louis A.
Hayes Ronald F.
Gruber Systems, Inc.
Hoag Willard E.
Johansen W. Edward
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