Control of your process is achieved when you produce the desired results. Will the material pass your quality checks? Can you send the material to the next phase of manufacturing or to the customer? Tests for adhesion, hardness, flexibility, gloss, texture, stain or scratch resistance, chemical rub, cross hatch, abrasion rub, color ID or registration are some of the checks commonly done during quality checks.
Operating in the “range” or “window” that produces good quality products is referred to as operating in the “ process window”. Establishing and maintaining the process variables and conditions to get the desired results is a balancing act and series of tradeoffs and choices. Process windows that have latitude and offer flexibility are described as “wide”. Process windows that offer little flexibility and require a very strict set of process conditions are said to be “narrow”.
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