Powder coating is by far the youngest of the surface finishing techniques in common use today. It was first used in Australia about 1967.
Powder coating is the technique of applying talc powder to cables. In powder coating, the powdered talc applies by electrostatic technique. With this technique talc powder electrostatically charged and sprayed onto the cable.
The powder is applied with an electrostatic spray gun to cable that is at earth (or ground) potential.
Because the powder particles are electrostatically charged, the powder wraps around to the back of the part as it passes by towards the air offtake system. By collecting the powder, which passes by the job, and filtering it, the efficiency of the process can be increased to 95% material usage.