<http://schema.org/description>
"New Backdraft extruder from American Kuhne, Ashaway, R.I., has a reverse-air cooling system suited especially to blown film that removes heat and undesireable air currents from the extrusion area for optimum bubble stability while also improving energy efficiency."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ptonline.com/products/extrusion-extruder-minimizes-heat-losses-and-air-currents-in-process-area>