Abstract — Manufacturers of multi-layer films can realize significant cost savings, product quality improvements, and reduce the risk of product failures by accurately measuring individual layer thicknesses of multi-layer materials instead of relying on gauging that can only provide total thickness.
Lumetrics and InDev A-C-T (www.indevsystems.com) are co-exhibiting at the ICE (International Converting Exhibition) conference in Orlando Florida April 25-27. Lumetrics is featuring the OptiGauge II utilized for measuring multi-layer films, (including EVOH layer) and coatings. Click here to download our white paper on measuring food packaging materials.
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A customer presented Lumetrics with a 5 layer product constructed of a liner, adhesive, middle layer, adhesive and a liner. The product is made in two operations. The first operation coats the liner with adhesive then adds the middle layer. The second operation adds adhesive to the middle layer and then adds the final liner.
The ability to control the adhesive layer was a critical parameter. The customer needed to know the adhesive thickness when applied in a wet state and again when cured in a dry state.