The surface of the substrate to be coated must be clean, i.e. free of dust, silicones,
detaching agents or any residue from previous processes or chemical treatments.
Avoid using silicones or detaching agents near the coating booth.
1. Blow out any dust or dirt residue from the profiles with compressed air. The
compressor has to be equipped with an oil-water separator to avoid
contamination of the surface.
2. Remove the protective film.
3. Smooth the sharp edges, if any, with scotch brite (e.g. 3M Grey ultra fine) or with
fine abrasive paper (320 grit) with the aid of a soft cloth.
4. Clean the substrate with a cloth in microfiber or lint-free cotton or industrial paper
soaked with AP M088. Change the microfiber/cotton/paper cloth often.
Due to the wide variety of PVC substrates available on the market, should
the microfiber/cotton/paper cloth be insufficient to properly clean the
substrate (which would result in poor adhesion of the coating on the PVC
profile), use scotch brite (e.g. 3M Grey ultra fine) soaked with cleaner AP
M088.
5. Prior to the cleaner evaporation, dry out the surface with an industrial paper cloth
or with a clean and dry fabric. Do not allow the cleaner to dry on the surface being
cleaned.
Supports must be perfectly dry before the coating or low adhesion problems
and/or coating defects (craters/cissings, etc…) might occur.                                                                                                 6. Proceed to the masking of the areas not to be coated; to this purpose use an
impermeable to waterbased coatings adhesive tape (es. tesa® 4334).
7. Once the profile has been cleaned, it has to be protected from external
contamination (e.g. dust, silicone in the air, gloves or dirty hands).
8. Proceed to the coating within 20 minutes from cleaning.