Coating processes – Direct application of electrical – magnetic – wave – or... – Electrostatic charge – field – or force utilized
Reexamination Certificate
2006-08-01
2006-08-01
Parker, Fred J. (Department: 1762)
Coating processes
Direct application of electrical, magnetic, wave, or...
Electrostatic charge, field, or force utilized
C427S475000, C427S480000, C427S484000, C427S486000
Reexamination Certificate
active
07083830
ABSTRACT:
A process for the production of special effect base coat/clear coat two-layer coatings on substrates by application of a special effect base coat layer of a liquid special effect base coat onto the substrate in one or more successive spray passes, optional drying or curing of the special effect base coat layer, followed by application of a clear coat layer and curing of the clear coat layer, wherein, at least in the final spray pass, application of the special effect base coat proceeds by electrostatically-assisted high-speed rotary application using at least one high-speed rotary coating device comprising a high-speed rotary bell, wherein an electrode ring is rotatably positioned around the high-speed rotary bell and used for external electrostatic charging of the effect base coat spray mist and performs rotational movements about the common axis of rotation with the high-speed rotary bell.
REFERENCES:
patent: 5865380 (1999-02-01), Kazama et al.
patent: 6093497 (2000-07-01), Wiemann et al.
patent: 2004/0137165 (2004-07-01), Lassmann et al.
patent: 0379373 (1990-07-01), None
patent: 1418009 (2004-05-01), None
patent: WO 0179360 (2001-10-01), None
Thomas Brock, European Coatings Handbook, Curt R. Vincentz Verlag, Hannover 2000, pp. 294 to 296.
Copy of the European Search Report Application No. EP 04023267, Mailed: Feb. 16, 2006.
E. I. duPont de Nemours and Company
Parker Fred J.
Sebree Chyrrea J.
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