Plastic and nonmetallic article shaping or treating: processes – With step of making mold or mold shaping – per se – Utilizing surface to be reproduced as an impression pattern
Patent
1991-10-25
1993-06-15
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With step of making mold or mold shaping, per se
Utilizing surface to be reproduced as an impression pattern
264255, B29C 3340
Patent
active
052195112
ABSTRACT:
The present invention is directed to a method of constructing a tool for forming an impression in a surface of a moldable material. The method includes the steps of: providing a mold for forming a tool, the mold including a pattern forming element for forming a pattern in a surface of the tool, and dispensing a first layer of flowable material into the mold. The first layer includes upper and lower surfaces and a predetermined pattern is formed in the lower surface of the first layer. The first layer is substantially hardened and a handle is positioned on the upper surface of the first layer. A second layer of flowable material is dispensed into the mold to cover at least substantially the entire surface of the first layer subsequent to hardening of the first layer, and the second layer is substantially hardened.
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Davis Robert B.
Woo Jay H.
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