Masking for Powder Coating                   Back to Powder-Coater Home Page



When a manufactured part is powder coated there may be certain

areas of the surface that must be free of coating. For example, threaded areas may not fit properly if they are coated.


Bearing surfaces with close tolerance cannot be coated. Some parts may require a bare spot for electrical-grounding contact. It is important to select a mask that is effective, easy to use and reasonable in cost.


Masking parts will add additional labor to the coating process. It is

important to understand the different types of masking products that can be used.


Masking can be as simple as placing a plug in a single hole or it may

require a specially made mask or fixture. One large hole in a large

part will require very little labor while some smaller parts may have

numerous spots that need masking and require a lot of labor.

Selection of the right masking procedure will affect the cost of the


The mask must be reasonable in cost and it must do an effective job of

keeping the coating off the masked surface.


hi temp tape              masking for powder coating

There are many commercially available masking materials for and

powder coated parts. Tapes, plugs, caps and steel fixtures can be

used. These cost and benefit issues are considered to determine the

best possible way to mask a part:

  • the cost per mask
  • the number of times it can be reused
  • the effectiveness of the mask
  • the ease of application and removal
  • ability to leave a clean parting line between the mask edge and the coating
  • the need to be stripped and the frequency
  • the temperature resistance of the mask material
  • the ease of removal of adhesive backing
powder coating masking  


Masking is a very important step in the coating process. It is labor

intensive and expensive. The type of masking material and its properties will be important to the effectiveness of the mask and its impact on production efficiency.


Keep in mind that any mask that is used must be efficient to apply and

remove, it must be effective at keeping the coating from the target

surface, it must stand up to the rigors of the process, and it must be

cost effective.


Powder Coaters Manual


Back to Powder-Coater Home Page


abrasive blasting   adhesion problems  caps and plugs

chemical cleaning  cure ovens  defects  fluidized bed

infrared oven  masking  outgassing  powder formulations

pretreatment  quality  tape  powder selection

powder vs. liquid  racking spray booth  spray gun  substrates

hi-temp tapes  types of powder troubleshooting

June 14, 2012