B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
32/16, 117/54
B05D 1/06 (2006.01) B05B 5/047 (2006.01) B05B 5/08 (2006.01) B05B 5/16 (2006.01) B05B 15/04 (2006.01) B05B 7/14 (2006.01)
Patent
CA 1132009
- 1 - Abstract The purpose of the invention is to provide a method and the required apparatus to coat articles of any shape and size with a layer of protective coating in an effective, energy-efficient, safe and economical way, omitting the use of electrostatic generators and avoiding contamination of the environment and loss in materials. The coating agent contemplated is powdered plastic which is introduced into a structure (see Figure 3) which is in the form of a main closed circuit loop (8) in which a blower (7) circulates air carrying coating agent until it has acquired substantial electrostatic charge, which can be increased by the addition in that loop of a section (13) of increasing diameter in the direction of the flow of powder. When the requisite electrostatic charge has been achieved, valves (17) (18) (26) and (27) are opened putting the main loop (8) into communication with branch circuits (16) and (25), which contain articles to be coated (23) and (32). The powder and air flow into those branch circuits and the powder coats the articles (23) and (32) by adhering to them by electrostatic attraction. Any powder that is not used is then returned in the flow of circulating air for reuse. After removing articles (23) and (32) from communication with the loop (8) and heating these articles to melt said powder the process is completed.
334123
Etlin Vladimir
Kirby Eades Gale Baker
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