A new multilayer blown film lay-flat measurement and control application combines the industry-proven web gauging capabilities of the 21Plus! Control Platform and FSIR Full Spectrum Infrared sensor. Ideal for manufacturers producing barrier films, the new application provides users with critical thickness and uniformity measurements and unprecedented control of individual polymers in the film stack. The application discriminates between various polymers and controls the amount of polymer exiting each extruder, helping maximize resin use, minimize scrap and lower operating costs. Advanced software distinguishes between top and bottom lay-flat film, and it rapidly scans and processes data, bringing more accurate die or air ring mapping to the end user.