FOLIENBLASKOPF UND VERFAHREN ZUR HERSTELLUNG VON SCHLAUCHFOLIEN

摘要

Blown film die for producing tubular film (3) from thermoplastics has inner and outer cooling rings (1) for the film. These are divided into sectors and the air in each of these can be blown on to the film under different conditions. Blown film die for producing tubular film (3) from thermoplastics has inner and outer cooling rings (1) for the film. These are divided into sectors and the air in each of these can be blown on to the film under different conditions. The die is also divided into sections whose temperature can be varied and/or there are additional bores (6) in its circumference at right angles to the outer cooling ring, through which air can be blown under different conditions. Control units (7, 8) alter parameters to adjust the film thickness. An independent claim is also included for a method for producing tubular film from thermoplastics using the die.