Patent ID: 6194027
Filing Date: 2001-02-27
Classification: B05B

Abstract:
A method of powder spray-coating objects, comprising the steps of:pneumatically conveying of a powder from a container (48) through an injector (26) and a powder line (22) to a spraying system (2), using a conveying-air flow (30) moving through the injector (26) and generating a vacuum in a vacuum zone (40) of the injector, thereby sucking powder out of the container and conveying the powder through the powder line to the spraying system,automatically and consecutively moving the objects through a spray-coating zone of the spraying system (2),interrupting powder conveyance at object gaps (12) formed between consecutively moving objects (6) by inserting controlling air (52) guided into the vacuum zone (40) of the injector (26) to reduce the vacuum to a degree that powder conveyance is interrupted.