Process for coating selected portions of a substrate using a pow

Details Process for coating selected portions of a substrate using a pow Process for coating selected portions of a substrate using a pow

1998-06-23

1999-12-14

Parker, Fred J.

Coating processes

Direct application of electrical, magnetic, wave, or...

Electrostatic charge, field, or force utilized

427428, 427486, 427197, B05D 128, B05D 302

Patent

active

06001427&

ABSTRACT:
A process for powder coating selected portions of a substrate comprises the steps of electrostatically applying a controlled thickness of a powder to an entire surface of a transfer member to form a powder coating thereon, said powder having a gel point, the temperature at which the powder turns into a gel, heating a substrate to a temperature above the gel point of the powder, pressing the heated substrate against the powder coating of the transfer member to melt the powder coating on the transfer member and cause the melted powder to stick to the substrate and coat selected portions of the substrate, and polymerizing and curing the coated portions of the substrate to fix the melted powder to the substrate.

REFERENCES:
patent: 3377183 (1968-04-01), Hurt, Jr. et al.
patent: 3765330 (1973-10-01), Gundlach
patent: 4304179 (1981-12-01), Katou et al.

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