Metal squeegee blade with a titanium nitride coating
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United States of America Patent
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Sep 7, 1999
Grant Date -
N/A
app pub date -
Nov 4, 1997
filing date -
Nov 4, 1997
priority date (Note) -
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Abstract
A squeegee blade comprising a base metal core coated with titanium nitride. Preferably, the blade also comprises a nickel coating between the base metal and the titanium nitride. The core blade is provided with an edge with a desired radius of curvature by chemical milling, and then the whole blade is chemically polished or electropolished and optionally nickel plated to produce a very smooth finish. The blade is then coated with titanium nitride to produce a blade with an extremely hard, low-friction surface. A squeegee incorporating the blade can be used, for example, for screen printing solder paste, conductive epoxy, or the like onto printed circuit boards.
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