Maintaining Proper Moisture Control

Both PVB interlayer film and EVA interlayer film are ways of making laminated glass, used largely for the automotive and architectural industries. They are very sensitive to moisture and require great care in the processing.

Moisture is the most critical measurement in the production process of PVB & EVA film, but other measurements are also important. For example; PVB and EVA film thickness, this is important due to the fact that moisture level needs to be lower than a critical % and small differences in the film thickness could make all the difference to whether the product lies within specification or not.

PVB producers have been very successful in reducing out-of-spec products by installing the MoistTech IR3000 NIR sensor.  The new sensor provides a continuous accurate measurement of PVB film overall moisture ranges as low as .0% to 1% with ppm accuracy. By physically passing the laminated product through the IR beam, the manufacturer can instantly monitor the moisture level, the film thickness, and the temperature.