Elcometer 155 Uncured Powder Film Comb
Test Method

The use of powder to coat a product has, up until now, one drawback - the ability to measure the uncured powder thickness.

With a wet film comb, the comb is placed perpedicular to the coating and removed and the thickness read. With a powder, this technique cannot be used as the powder would simply be crushed thereby making the test meaningless as it is necessary to have the two end teeth touching the substrate.

To this end, the Elcometer 155 Uncured Powder Comb, is placed perpendicular to the coating and drawn across the surface - thereby generating lines in the powder where the comb teeth touch it.

The uncured powder film thickness lies between the biggest value tooth generating a line in the powder and the smallest value tooth which has not generated a line in the powder.

In the example - this is between 100 and 75 microns.