Tape Adhesion
Test used to check for adhesion of a coating to the surface usually following a mechanical test.

Telegraphing
Phenomenon that occurs when a surface defect on an un-coated part is visible in the final cured film.

TGIC
Triglycidyl Isocyanurate. Hardener used in exterior quality polyester powder systems.

Theoretical Coverage
The capacities of a given mass of a specific powder to coat in a cured state an area of substrate at a determined film thickness.

Thermocouple
A pair of dissimilar metal wires that generates an electrical force at a point of contact that varies in proportion to temperature.

Thermoplastic
A powder coating that will repeatedly melt when subjected to heat and solidifies when cooled.

Thermosetting
A powder coating designed to undergo an irreversible chemical change during heating and will not revert to the liquid stage when reheated.

Threshold
Limit Value Air concentration of chemical substances to which workers may be exposed to daily without adverse effect.

Throughput
The production output of a system at a given line speed using a predetermined part or hanging pattern.

Tote Bins
Large containers for shipping bulk powder coatings.

Toxic
Poisonous.

Transportability
A coating's ability to be carried in an air stream and passed through tubing and ducts designed to transport powder coatings.

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

Triggering
Intermittant squeezing and releasing of a spray gun trigger. Can cause surging in the powder equipment.