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.

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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.