Film Thickness Tolerance

Q. I find your response to J.O.’s question about textured coatings in the November 2007 Powder Coating Clinic column to be somewhat misleading. Attached is information about Rohm and Haas’ Textra technology. I helped launch this technology in the late 1990s.

Its primary attributes include continuous (pinhole -free) films at thickness much lower than the 3–5 mils you state are typical for most textures and consistency of appearance over a very wide range of thicknesses.
Please consider a follow-up to your column stating that there are products available which perform quite well at thicknesses much lower than you cited in the response to J.O.’s question. V.D.

 

A. In the column you reference, I responded to a question about film thickness tolerances when using a textured powder coating. In this response, I stated: “Textured powder coatings are typically applied at 3.0 to 5.0 mils (0.003 to 0.005 inch).”

The operative word is “typically.” Evidently, your company has a textured powder coating that is “atypical.” I’ll let you off the hook this time with just a warning, but watch it in the future! Just kidding. Thanks for reading the column.