Preparation of differential thickness coatings by dip coating where the substrate is pivoted
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United States of America Patent
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Oct 6, 1992
Grant Date -
N/A
app pub date -
Jun 10, 1991
filing date -
Jun 10, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A substrate, bearing a coating having a thickness which varies in more than one direction across the surface of the substance, is prepared by a process wherein the substrate is immersed into a coating medium bath, then withdrawn in a predetermined direction and at a predetermined rate, and simultaneously pivoted at a predetermined angular velocity about an axis which is orthogonal to the direction of withdrawal.
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