Technical Information > Powder Coating Processes

Powder Coatings Equipment and Processes

Electrostatic Powder Air Spray Equipment is used to apply a powder which is held in suspension by a constant stream of air. An electrical charge is placed on the powder and the opposite electrical charge is placed on the item being coated. This creates a powerful attraction between the two allowing for high deposition rates and even coatings. This is especially useful for creating thick film, abrasion and wear resistant coatings such as Tefzel ^®, PFA, ETFE, ECTFE and Rilsan ^®.

Fluidized bed equipment is used to apply a powder evenly and quickly to complex shapes. The item to be coated is first pre-heated and then placed in a bed of powder held in suspension by air. The length of time it is held in the bed and the preheating temperature determine the thickness of the coating that is applied. The coated item is then placed into an oven for curing. With some coatings the preheating can be eliminated or used in conjunction with electrostatic charges to apply coatings which are subsequently cured in an oven.

Rotational Molding is used to apply a powder to the interior surfaces of a tank, vessel or pipe. Using this equipment, a predetermined and pre-measured amount of coating is placed into the item to be coated and the item is rotated in all directions while being heated to the curing temperature. This technique is very useful for applying uniformly thick Teflon ^®, Halar ^®, Kynar ^® and other fluoropolymer and plastic coatings.

Please note that many coatings can be applied using different equipment and techniques. The choice of how the coating is applied can affect its physical properties such as dry film thickness, abrasion resistance and release properties.

For help selecting the right coating for your situation, contact ICS TECHNOLOGIES.

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