Trash covers any foreign particle that lands on the part or the uncured powder and cures into the film: shop dust, rag lint, sanding debris, flakes of cured powder off hooks or oven ducts, even insects. It is the most common cosmetic reject on high-gloss and dark colors. Pressurized booths, clean hooks, good blow-off and a clean oven keep it down.
Gloss black looks like sandpaper, there's trash in every panel, when did anyone last vacuum the oven?
Also heard as
- dirt
- dirt in film
- nibs
Related terms
Seeds
Small hard lumps in the cured film from gelled or fused bits of powder rather than outside dirt.
Cross-contamination
Specks of a different color or chemistry carried into a powder run from equipment, air or reclaim.
Blow-off
Blasts of compressed air used to clear water from pockets or dust from parts before they are coated.
Hooks
The wire hangers that hold parts on the conveyor and carry the ground connection.