Metal die acid etch apparatus and process
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United States of America Patent
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Nov 15, 1994
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N/A
app pub date -
Nov 29, 1993
filing date -
Nov 29, 1993
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Abstract
A metal die acid etch apparatus includes a bath for holding an acid etch solution and a hood assembly on which a metal die is supported above the bath. Structure is provided on the apparatus for exposing the metal die to the acid etch solution that is in the bath in order to etch the plate as desired. A weir is positioned at a predetermined height within the bath for draining acid solution from the top of the bath, and this drained solution is recirculated into the bath. The temperature of the acid etch solution in the bath is maintained at a predetermined temperature in order to provide a predictable and consistent etch of the metal die.
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