Coating processes – Direct application of electrical – magnetic – wave – or... – Electrostatic charge – field – or force utilized
Reexamination Certificate
2006-05-09
2006-05-09
Parker, Fred J. (Department: 1762)
Coating processes
Direct application of electrical, magnetic, wave, or...
Electrostatic charge, field, or force utilized
C427S460000, C427S461000, C118S634000
Reexamination Certificate
active
07041340
ABSTRACT:
A process for forming a coating on a conductive substrate, including the steps of: establishing a fluidised-bed of a powder coating composition, thereby effecting tribostatic charging of the powder coating composition, the fluidised-bed including a fluidising chamber at least a part of which is conductive, applying a voltage to the conductive part of the fluidising chamber, immersing the substrate wholly or partly in the fluidised bed, whereby charged particles of the powder coating composition adhere to the substrate, the substrate being either electrically isolated or earthed, withdrawing the substrate from the fluidised-bed and forming the adherent particles into a continuous coating over at least part of the substrate. The process offers advantages in terms of coating substrate areas which, because of the Faraday cage effect, are inaccessible in conventional electrostatic powder coating processes, and also enables the formation of thinner coatings than are obtainable by conventional fluidised-bed processes.
REFERENCES:
patent: 3248253 (1966-04-01), Barford et al.
patent: 3396699 (1968-08-01), Beebe et al.
patent: 3670699 (1972-06-01), Sargent
patent: 3690298 (1972-09-01), Venturi
patent: 3817211 (1974-06-01), Brown et al.
patent: 3871328 (1975-03-01), English
patent: 6506455 (2003-01-01), Bru et al.
patent: 99/30838 (1999-06-01), None
patent: 9930838 (1999-06-01), None
patent: 00/76677 (2000-12-01), None
patent: 00/76677 (2000-12-01), None
Liberto, N.P. (Ed.) Powder Coating The Complete Finisher's Handbook, pp. 88-89, 1994.
Falcone Michele
Kittle Kevin Jeffrey
International Coatings Limited
Parker Fred J.
LandOfFree
Powder coating process with tribostatically charged... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Powder coating process with tribostatically charged..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Powder coating process with tribostatically charged... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3575237