Using an extrusion for the production of a film based on a thermoplastic, sheet and use of the sheet.

Using an extrusion for the production of a film based on a thermoplastic material being melted and transported the thermoplastic material on the extrusion installation, containing an extruder, an extrusion die (10) with a hole shaped outlet slot die and chill roll (30) which is fixed to a roller mill (50), and leaving as a continuous strip of melt web (20), and being placed the web melt by the chill roll (30) and cooled, wherein an extrusion is used, in which the distance (80) between the outlet of the extrusion nozzle (10) and the roll surface chill roll (30) in the operating state varies by no more than +/- 50 microns.