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Why Paint Peels Off on Plastic Substrates

Does paint always peel off after plastic spray coating?
Is adhesion on PC/ABS, PP, and PA substrates inherently poor?
In most cases, the real issue is not the plastic itself, but incorrect resin selection
Using an unsuitable coating resin on low-surface-energy or highly crystalline plastics often leads to poor adhesion, peeling, and flaking
With the right resin system matched to each substrate, and proper surface treatment when needed, stable adhesion can be achieved

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