Film-Inspect

Thin film inspection at production rate

Ultrathin plasma coatings are applied to packaging materials as diffusion barriers. These coatings are more sustainable and cost-effective than conventional polymer composite materials. The correct application of the plasma coating, which in many cases is just a few nanometers thick, is crucial in ensuring its barrier function. The Film-Inspect optical sensor inspects the quality of plasma coatings in the production line. Measuring the coating thickness inline enables coating processes to be readjusted and also serves as proof of the quality of barrier coatings for manufacturers of packaging materials.

Infrared optical characteristics provide information about the thickness of barrier layers

Plasma coatings made of silicon oxide or aluminum oxide provide a good barrier against gas and water vapor diffusion while also being easily recyclable. Film-Inspect measures the coating based on its specific infrared signature at a suitable wavelength within just 0.2 seconds with an accuracy of up to ±1 nm. The sensor head is as small as a USB power supply unit. Several sensors can be operated simultaneously. Thanks to cost-effective components, this is also perfectly feasible under economic aspects. Measurements can be taken on plane, but also on textured and curved surfaces as well as on moving objects.