FOLIENBLASANLAGE ZUR HERSTELLUNG VON KUNSTSTOFFOLIEN

摘要

A film-blowing arrangement for manufacturing thermoplastic films has a blowing head above which a cooling ring (1) is mounted and a measurement device for measuring the film thickness located behind the film in the direction of motion of the film. The cooling effect over the periphery of the hose can be varied by varying the throughput of the cooling ring (1) and the corresponding adjustment in each region is controlled in accordance with the measured values obtained by the measurement device. It is proposed that the cooling ring have peripheral openings (4) in the region of and in front of the air outlet (2), and in the direction of flow of the air (3), through which air enters or leaves.