Method for surface treatment of plastic material and apparatus used therefor
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United States of America Patent
Stats
-
Dec 14, 1993
Grant Date -
N/A
app pub date -
Oct 20, 1992
filing date -
Oct 25, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Using a treating solution which is easy to dispose after use, the surface of a plastic material is treated so that the treated surface has good adhesion to a coating film to be formed thereon. An aqueous dispersion containing an abrasive which is harder than a plastic material to be surface-treated, is pressurized to about 1.0-200 kg/cm.sup.2 and then is injected onto the surface of said plastic material through an injection nozzle. An airless spray gun having said injection nozzle is supported by a polyaxis type or articulated type robot. Thus, the surface of a plastic material is ground and converted into a rough surface and then coatings are applied thereon.
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