Method of making metal molds and dies

Details Method of making metal molds and dies Method of making metal molds and dies

1987-02-24

1989-05-23

Lacey, David L.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156658, 1566591, 252 792, 427276, 427277, 264132, 264293, C23F 102

Patent

active

048327905

ABSTRACT:
A method of forming a metal mold or die from a model of the mold contours. A workpiece for the mold is coated with a material which is resistant to an acidic etchant, and is then immersed in the etchant and brought into contact with a template for the metal mold or dies. Those portions of the coating contacted by the template are displaced until the template contacts the surface of the workpiece. The template is then withdrawn to permit the echant to etch any portions of the workpiece exposed by displacement of the coating. The process is progressively repeated until the surface of the workpiece conforms to any contouring of the surface of the template.

REFERENCES:
patent: 3290192 (1966-12-01), Kelley
patent: 4035226 (1977-07-01), Farber et al.
patent: 4108716 (1978-08-01), Pritchard et al.
patent: 4325779 (1982-04-01), Rossetti

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