Powder Application Tips Series: Powder Flowability

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Powder flowability is defined as the ease with which a powder will flow under a specified set of conditions. Some of these conditions include: the pressure on the powder, the humidity of the air around the powder, and the equipment the powder is flowing through or from. 

Powder Flow Rate or Ejector : Too High
  • High impact fusion
  • High venturi wear
  • Low transfer efficiency
  • Poor penetration into recesses – low wrap 


Powder Flow Rate or Ejector: Too Low
  • Powder spurting, surging, or puffing
  • Low powder film build
  • Poor penetration into recesses


Controlling the powder flow rate is a critical step required to create accurate process control. Spray equipment can be complicated, so if you need some additional assistance with your spray equipment and controlling powder flow rate, feel free to contact us today and we will be more than happy to help.


For more information on application, please see or download our powder coating technical guide on our website.

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