It handles a broad range of film thicknesses with no tradeoff in performance and substantial reductions in downtime for prouduct changeover. The air knife/soft box component handles a web thickness range from 20 to 150 microns. The air knife expels air in a concentrated stream at high velocity, making it effective for thicker films. The soft box usually has a screened opening that expels a higher volume of air; it works best with films less than 30 microns thick.
