A powder coating has many advantages over a wet coating system, in particular there is little or no waste (excess powder or oversprayed powder can be recycled and reused) and no solvents – tighter environmental controls of VOC emissions and legislation increases the need to use less or no solvents.
Making sure that the end product has the correct levels of adhesion and appearance - in particular gloss and colour – is dependent upon the thickness of the powder prior to the curing process, and the temperature profile of the oven. Measuring the thickness of powder however, is difficult as touching it changes the powder thickness compressing it under the force. Elcometer have therefore developed two solutions to this problem.
