Battenfeld Gloucester Engineering Co. Inc: Cast film tooling
For pinning the web to the chill roll as the web exits the die on cast PP film lines, Battenfeld Gloucester Engineering has developed a combination air knife and soft box attachment.
It handles a broad range of film thicknesses with no trade off in performance and substantial reductions in downtime for product 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.