Coating processes – Electrical product produced – Welding electrode
Patent
1980-07-03
1982-02-02
Pianalto, Bernard D.
Coating processes
Electrical product produced
Welding electrode
4272084, 427236, 427282, 427422, B05D 306
Patent
active
043139701
ABSTRACT:
A method of masking a workpiece at a demarcation zone to facilitate precise spray painting of a workpiece first area on one side of the zone. The method includes providing a mask which has an adhesive backing on one face thereof and a protective liner removably secured to the adhesive backing. The liner is cut or severed so that the resultant sever line has the same conformation therealong as that desired for the demarcation zone. That section of liner associated with the portion of the mask to be affixed to a workpiece second area on the opposite side of the demarcation zone from the workpiece first area is removed from the mask. Thereafter, the mask may be affixed to have the liner sever line precisely aligned with the demarcation zone. Pressure is exerted against the mask at a thin pressure zone coextensive with the demarcation zone to automatically lift that portion of the mask which overlaps the workpiece first portion at and along the demarcation zone to generally form an acute angle therewith. The workpiece first area may then be spray painted from a direction generally normal to the workpiece plane at least adjacent the demarcation zone. The pocket-like area of the mask causes the paint to be feathered toward the demarcation zone and thereby enhance blending of the painted areas precisely along that zone. A paint drape may also be accommodated by and affixed to the mask to protect a larger portion of the workpiece second portion. An alternative construction for the mask employs a thin vinyl sheet material with heat being subsequently applied to effect lifting.
Frappier David E.
Haas John F.
Jones Wallace R.
Krieger Paul A.
Pianalto Bernard D.
The Excello Speciality Company
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