1. Problems during the application 1.1 Fluidisation ... - BASF Coatings
1. Problems during the application 1.1 Fluidisation ... - BASF Coatings
1. Problems during the application 1.1 Fluidisation ... - BASF Coatings
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<strong>Problems</strong> <strong>during</strong> <strong>the</strong> <strong>application</strong><br />
<strong>1.</strong>4. Irregular film thickness distribution on object<br />
Detection Possible causes Remedy<br />
Colour changes caused by<br />
opacity differences<br />
(streaking) of powder coating<br />
film<br />
Surface does not look<br />
uniform<br />
Irregular powder output, distance<br />
between gun and object not ideal<br />
Relation between belt speed and<br />
stroke speed of guns not ideal; high<br />
voltage fluctuations<br />
Grain size distribution not ideal<br />
Object design (Faraday cage) and/or<br />
suspension unfavourable<br />
Feed fair pressure too high<br />
Powder coating film is blown off<br />
because fair speed is too high<br />
Optimise system parameters<br />
Optimise grain size distribution<br />
Change object design and/or<br />
suspension<br />
Reduce delivery pressure
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