Defects of coating

Blisters in the coating

If you encounter this problem after the powder coatings have cured, perform a step-by-step check of the technology parts mentioned below.

 

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Blisters in the coating
Blisters in the coating
Blisters in the coating
Blisters in the coating

Compressed air

  • moist compressed air

Application equipment setup

  • very high coating thicknesses
  • electrostatic application voltage set too high

Paint (powder coating)

  • defective powder coating batch
  • wet powder coating
  • different coatings of the same shade have been mixed together

Part and its hanging

  • poorly dried base material
  • porous base material
  • insufficiently degreased base material

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