Necessity and method of wet-film and powder thickness measurement and estimation of Dry-Film

 When applying liquid or powder coatings, it is possible to determine the thickness of the final dry film by measuring the uncured film thickness.

In the actual coating process, coating too much paint will inevitably waste time and materials, which will affect the performance and final effect of the product. Too thick wet film will cause cracks in the coating during curing; too little paint will increase the risk that the substrate will not be adequately protected, resulting in rust spots.

In the powder coating industry, ensuring that the final product has the correct adhesion and appearance grade depends on the thickness of the powder prior to the curing process. Too much powder reduces adhesion, and too little powder causes the coating to fade and reduce gloss.

Wet film thickness measurements include wet film combs, Thickness Gauges, and wet film wheels. No matter which instrument is used, the coating thickness is measured and the final dry film thickness is estimated using the coating dry: wet ratio.