Roller Wave Distortion - Definition, Causes and a Novel Approach to Accurate, On-line Measurement

Mark Abbott, John Madocks

Roller wave distortion in heat-treated glass results in customer complaints and lost product. Roll distortion is defined in peak-to-valley measurement terms and related to optical distortion as seen by the customer. A technique is described to accurately measure roll distortion using on-line optical methods. Feedback to furnace operators has resulted in dramatic improvements in product quality.

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