INNER COOLING BODY FOR A BLOWN FILM EXTRUDER, BLOWN FILM EXTRUDER COMPRISING SAID INNER BODY AND METHOD FOR OPERATING SAID BLOWN FILM EXTRUDER

摘要

The invention relates to a device and method in which the formation of paraffin condensate on an inner cooling body (5) of a blown film extruder can be either avoided or allowed in a controlled manner and then removed, thereby reducing damages to the film tube (15) or even avoiding them.