Some Common Glossary used in the powder coating industry

Salt Spray Test – Corrosion test using salt (NaCl) sprayed as a mist in a heated humidity chamber to simulate seashore conditions, or to accelerate corrosion at a controlled rate. ASTM B117.

Sandblast – Blast cleaning using sand as an abrasive.

Scale – Rust occurring in thin layers–commonly found on hot rolled steel.

Sealed Coating – Primer. Coating used for the prevention of excessive absorption of a first coat of paint by the substrate.

Seeding – Formation of small agglomerates or gel particles in a coating.

Shelf Life – Maximum interval a material may be stored and still be in usable condition.

Shot Blasting – Blast cleaning using steel shot as the abrasive.

Solution – Mixture formed when one material (solid or liquid) is dissolved into a liquid.

Soy Paint Soy Paint is paint made primarily from soy, it combines the advantage of being a renewable resource with the potential of non-toxic product

Surface Preparation – All operation necessary to prepare a surface to receive a coating of paint.

Taber Abraser – An instrument used to determine the abrasion resistance of a plastic or paint coating. (Taber abrasers utilize rubber wheels impregnated with an abrasive media. Results are reported in cycles to failure and/or weight loss per specified cycles per specified weight load.)

Tape Adhesion – Test used to check for adhesion of a paint to a surface. (Paint is scribed with an “x” or a cross-hatch line pattern, tape is then applied over the scribed areas, and ripped away to be examined for paint pulled from the surface.)

Polyester TGIC – Triglycidyl isocyanurate.

Thermoplastic – Type of polymer which softens and melts when heated but resolidifies upon

Thermosets – Type of polymer which does not soften appreciably when heated.

Tooth – Profile. Mechanical anchorage. Surface roughness.

Topcoat – Usually the final paint film applied to a surface.

Transfer Efficiency – Ratio of the liquid paint or powder Coating actually deposited on a substrate as compared to the amount directed at the part to be coated.

Tribocharging – The process of creating a static electric charge on powder particles by friction against a non-conductive material.

Venturi – A constricted throat in the air passage of powder pumps and used to determine velocities by the measurement of differential pressures generated at the throat as powder traverses the tube.

Virgin Powder – Unsprayed powder — as opposed to sprayed or reclaim powder.

Voltage Tester – Instrument used to measure voltage output at corona tip of electrostatic spray gun.

Voltmeter – Instrument used to measure electrical current in volts (voltage).

Water Blasting – Blast cleaning using high velocity water.

Water Spotting – The occurrence of whitish blemishes on a surface in areas where water droplets have dried leaving mineral solids behind. i.e. salt, calcium.

White Blast – Blast cleaning to white metal.

Wrap – A characteristic of liquid or powder coating in an electrostatic application to seek out and adhere to parts of the substrate not in direct line of sight of the delivery system end poin

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