Battenfeld Gloucester Engineering Co. Ltd. said its air knife/soft box attachment, for cast polyprolylene lines, makes it easier to pin webs of different thickness to the chill roll immediately after it exits the die.
Each component is suited for a different film thickness, so a cast PP line uses one or the other separately. Now Battenfeld Gloucester brings them together by mounting the knife on top of the soft box. It can handle film thickness from 20-150 microns.
The component is attached in the same general area of the machine as conventional devices, between the die and chill roll. To change products and get the right air flow to pin the web to the chill roll, you make a mechanical adjustment and index the correct side into place. Because the system doesn't have to be removed, processors eliminate downtime required to disconnect one device and install the other one.
The device is available on new equipment or as a retrofit.
The company in Gloucester, Mass., said it installed the first air knife/soft box component on a production line installed in China in late 2003.
Tel. (978) 282-9268, fax (978) 282-9111, e-mail [email protected]