B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
B05D 1/12 (2006.01) B05B 7/14 (2006.01) B05C 7/00 (2006.01) B05C 19/06 (2006.01) B65G 47/51 (2006.01)
Patent
CA 2194059
A powder coating apparatus and method feeds fine powdered coating material such as thermoplastic type material to a succession of discrete articles passing by the apparatus which includes a vibratory feeder bowl and a spiral track for delivering a substantially constant supply of powder coating material to the articles, wherein the powdered coating material is mixed with a pressurized airstream that delivers the powdered coating material to the articles. A sensor is also used to regulate an amount of powdered coating material supplied to the auger to the vibratory feeder. The invention also provides a powder feed system that deposits an excess of powdered coating material than that required to form the coating and provides for recirculation of the powder not ultimately used to form the coating back to the powder feeding apparatus.
On décrit un appareil (10) et un procédé qui permettent d'appliquer un matériau de revêtement (16) à base de poudre, de type thermoplastique par exemple, sur une succession d'articles distincts (12) passant par cet appareil (10). L'invention concerne aussi un système d'alimentation en poudre qui dépose un matériau de revêtement (16) à base de poudre en quantité dépassant celle nécessaire à la formation de ce revêtement, et qui permet le recyclage de la poudre inutilisée pour ce revêtement vers le système d'alimentation en poudre.
Macrae & Co.
Nd Industries Inc.
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