Using a broadband laser with white light, SBI Solutions By Innovation in Hollabrunn, Austria, has developed a thickness gauge that can measure barrier layers in clear film.

Using a broadband laser with white light, SBI Solutions By Innovation in Hollabrunn, Austria, has developed a thickness gauge that can measure barrier layers in clear film. The sensor picks up reflections off the interfaces between layers in film up to 300 microns thick. The device can't distinguish between regrind and virgin layers of the same material, between multiple layers of PE, or between a tie layer and PE. But it can measure one or more barrier layers that are at least 10 microns thick. +43 (2952) 341 39 . www.sbi.at