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Spray Painting on PolyOlefins

Polyolefin rods
 
Polyolefins are a group of plastics formed by the polymerization of olefin monomer units. The most common polyolefins are polypropylene (PP) and polyethylene (PE). Subgroups of these are high-density polyethylene (HDPE), low-density polyethylene (LDPE) and polypropylene (PP). HDPE is commonly used for fuel tanks, bottle caps and plastic bottles. LDPE is used for liquid containers, tubing and plastic wrap (eg plastic milk jugs). PP is used for piping, carpet, roofing, hinges and auto parts. Polyolefins have excellent chemical resistance and are unaffected by common solvents, but this also means they have poor adhesion properties to both paints and adhesives.
 
We have done qualitative testing and have determined that you can improve adhesion by sanding the surface first, then priming with our Primer for Acrylic Enamel then top coating with our Hedrix fast dry spray paint (orderable from any color page).
 
We would still recommend testing this yourself to make sure it meets your specific requirements. The adhesion may be improved further by using an adhesion promoter like "Bulldog" in place of the primer. This is commonly used in automotive applications where the painting is done over polymetric panels like Polypropylene.


*MyPerfectColor uses Kelly Moore or proprietary paints to create or match any color imaginable. MyPerfectColor has matched the colors on this page based on the color specifications of the original. Select a color to see MyPerfectColor's duplication of the colors you desire. Please note that since the paint used to match this color is unique to MyPerfectColor, the finish of the paint may vary from the original. Please note that, other than Kelly Moore, RAL, and Pantone, MyPerfectColor is not offering the actual branded color or paint product for sale and has no affiliation with the color-referenced brands. MyPerfectColor reference to any trademark is for color comparison only. On-screen and printed color representations may vary from actual paint colors. The actual paint color will also vary depending on the specific paint product, application method, gloss level, film variance, surface substrate, age and light source. Please note on small batch size orders, the potential variation of colors is increased.