Powder Coating Process

Powder coating is a method by which electrically charged powder coating material is spray-applied to a grounded work piece. Electrostatic attraction holds the powder to the part to be coated until heat is added to flow the powder together and cure it.

Since powder may adhere to the part for several hours, heat curing can be done at the user's convenience. Should the uncured powder coat become damaged or blemished during handling, the powder can be simply blown off with air or vacuumed, and a new coat applied.

Benefits of Powder Coating

Economy

• Up to 99 percent of powder overspray can be captured and recycled
• One-coat coverage without runs or sags
• Easy cleanup.  No solvents to mix or recover
• No viscosity balance to maintain
• No flash-off time requirements
• No need to provide heat booth make-up when air is returned to work area
• Reject rate can be kept low because damaged coating can be blown off and recoated before heat cure

Excellence of Finish

• Readily available resins can provide one or a combination of desirable characteristics including: durability, resilience, high gloss, electrical  insulation, toughness; and resistance to wear, corrosion, impact, chemical action, and weather
• Powder manufacturers now offer a complete range of colors plus excellent color matching

Ease of Application

• Consistent finish characteristics and electrostatic "wrap-around" reduce the need for highly skilled operators
• Process is easily automated and can include automatic gun movers and/or contouring mechanisms
• Production time can often be reduced,
  as one coat will do the job