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Electrophoretic Molding

IP.com Disclosure Number: IPCOM000077878D
Original Publication Date: 1972-Oct-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Damm, EP: AUTHOR [+2]

Abstract

The poor adhesion property of indium mercury alloy is utilized to form intricately shaped insulative films. The liquid alloy is deposited in a film over a plastic part which serves as a form or mandrel. The coated form is suspended as an electrode in an electrocoating bath. Material suspended in the bath is deposited over the liquid alloy film by electrophoresis. The electrophoretic deposit is easily separated from the alloy film due to the poor adhesion of the latter, and the alloy film is separable from the form for the same reason.

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Electrophoretic Molding

The poor adhesion property of indium mercury alloy is utilized to form intricately shaped insulative films. The liquid alloy is deposited in a film over a plastic part which serves as a form or mandrel. The coated form is suspended as an electrode in an electrocoating bath. Material suspended in the bath is deposited over the liquid alloy film by electrophoresis. The electrophoretic deposit is easily separated from the alloy film due to the poor adhesion of the latter, and the alloy film is separable from the form for the same reason.

Thus, the form is useful to replace more costly molds. The alloy is used instead of more toxic pure mercury.

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