The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2008
Filed:
Dec. 11, 2003
Kevin Jeffrey Kittle, Durham, GB;
Michele Falcone, Como, IT;
Kevin Jeffrey Kittle, Durham, GB;
Michele Falcone, Como, IT;
Akzo Nobel Coatings International B.V., Arnhem, NL;
Abstract
An apparatus and process for forming a coating on a substrate, including establishing a fluidised-bed having a fluidising gas and a powder coating composition, immersing the substrate wholly or partly in the fluidised bed, the substrate being either electrically isolated or earthed, providing an electrically conductive electrode, to which a voltage is applied, positioned to influence the extent to which charged particles adhere to a region of the substrate, withdrawing the substrate from the fluidised-bed and forming the adherent particles into a continuous coating over at least part of the substrates. The apparatus is arranged and the process is conducted such that the maximum potential gradient existing in the fluidised bed is below the ionisation potential of the fluidising gas.