Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Surface finishing
Patent
1985-03-12
1986-11-25
Czaja, Donald
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Surface finishing
264246, 264247, 264255, 264256, 264261, 2642711, 428 45, 428 49, B28B 1108, B29C 3912, B32B 314, B32B 3106
Patent
active
046248153
ABSTRACT:
A process of making slabs for use as table tops, or other decorative purposes, comprising an array of individual stones arranged in mosaic patterns. A base of hard, essentially nonwarping wood is cut to the desired outline of the final slab and supported on a spacer member in a horizontal position above the level of a work surface. Border stones are placed upon the work surface to extend upwardly therefrom a predetermined, uniform distance essentially even with the surface of the base about the periphery thereof, and mosaic stones are arranged in a desired pattern within the border stones. A flexible constraining member is placed about the border stones and a layer of polyester resin in liquid state is poured over the mosaic and border stones to fill the interstices and to bond the stones to the wood base. After the resin hardens the exposed surfaces of the stones are polished and excess resin removed by buffing. The slab is inverted and the opposite surface is covered with resin to the level of the border stones, either before or after the polishing of the top surface. At least some of the stones are preferably shaped along edge portions thereof to provide an overlap of adjacent stones, giving added lateral stability.
REFERENCES:
patent: 3070866 (1963-01-01), Kastenbein
patent: 3349158 (1967-10-01), Maynard
patent: 4466937 (1984-08-01), Johnston
Czaja Donald
McGuire Charles S.
Tentoni Leo B.
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