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Chapter 6- Powder-spray Booths and Recovery Systems (eChapter from User's Guide to Powder Coating, Fourth Edition) Image

Chapter 6- Powder-spray Booths and Recovery Systems (eChapter from User's Guide to Powder Coating, Fourth Edition)


Author(s)/Editor(s): Nicholas Liberto PE
Published By:
SME

Published: 02/28/2003
Product ID:
BK03PUB1_E_CH-6
ISBN:
978-1-62104-046-0

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SME Members: $ 8.00
Non members: $ 10.00

Description

Efficient recovery of over-sprayed material is one of the most important aspects of an electrostatic powder-spray system. Of the amount of powder leaving a spray gun, 30–90% adheres to the part. Over-sprayed material must be collected effectively for disposal or recycling, depending upon its economic value. Recycling powder overspray (reclaim) is the best way to achieve the high system efficiency that is characteristic of the powder-coating process. Air movement is the primary tool in virtually all methods of collecting over-sprayed powder materials. Collection systems must address several important requirements: containment of overspray to limit worker exposure and minimize housekeeping; efficient separation of powder from air volumes; ease and time of color change; control of air movement in spray zones for augmentation of application transfer efficiencies; minimization of operational-noise levels for worker protection; adherence to safety and insurance agency regulations, particularly in the areas of fire and explosion prevention; ease and time of installation; and comfort and convenience for the worker during system operation.