Boundary layer disruptive preconditioning in atmospheric-plasma process
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United States of America Patent
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Issued Date -
Mar 11, 2010
app pub date -
Sep 9, 2008
filing date -
Sep 9, 2008
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Abstract
The boundary layer of a substrate is exposed to a low-energy inert-gas atmospheric plasma that disrupts the layer's bonds, thereby permitting the removal of most oxygen from the surface of the substrate. The substrate is then passed through an exhaust section to remove the disrupted boundary layer prior to conventional plasma treatment. The subsequent plasma treatment is carried out in conventional manner in a substantially oxygen-free environment. As a result of the invention, the high surface-energy levels provided by plasma treatment are more lasting and plasma applications requiring a substantially oxygen-free environment are more efficient.
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