Patent ID: 9427906
Filing Date: 2016-08-30
CPC Classification: B29C

Claim Text:
1. A device for calibrating and cooling an extruded plastic film or sheet from an extrusion slot die, the device comprising: an extruder; an extrusion slot die; a first calibrating roll; a second calibrating roll; and a cooling zone, wherein the first and second calibrating rolls form a roll nip into which an upper and lower surface of the extruded plastic film or sheet are simultaneously introduced from the extrusion slot die, wherein the first and second calibrating rolls are followed in a downstream direction by the cooling zone, wherein the cooling zone comprises pairs of rolls configured to directly contact the extruded plastic film or sheet, wherein the pairs of rolls are arranged one behind the other, and are arranged offset from each other, in the downstream direction configured to form a longer cooling zone, wherein the pairs of rolls are combined into modules.