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On-Line Calipers Measure Opaque Sheet.

A new electromechanical gauge measures the true absolute thickness of opaque extruded, calendered, or foamed sheet--and even nonwovens. Thickness profile is displayed on a video screen. Model 360 Caliper Gauge from NDC Infrared Engineering, Irwindale, Calif., has a steel reference platen below the web and a round, 1-in.diam. sensor with an aluminum oxide coating that touches the web's top surface. Upper and lower caliper heads scan back and forth across the web, measuring MD and TD variation of webs up to 0.200 in. thick.
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Publication:Plastics Technology
Article Type:Brief Article
Geographic Code:1USA
Date:Mar 1, 2000
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