Blown Film Dies and Cooling Rings


RW 80, RW 120, RW 160

Blown Film Dies

Multi-layer dies for 2 up to 13 layers are suitable for different number of layers. For these processes, Collin delivers dies with radial spiral mandrel distributors, moreover, different mandrels and matrices are available.

  • Optimized distributor design ensures highest layer thickness constancy over the circumference
  • As option, IBC (inner bubble cooling) is available
  • Fully linear, constant bubble diameter control (LBVC – linear bubble volume control), thus, large diameter variance as well as highly precise control of the bubble diameter
  • Easy retrofit between different layers – e. g. from 3-layer to 5-layer
  • Very good thermal decoupling of the layers

Cooling rings

Collin cooling rings are mainly characterized by the following characteristics:

  • Very good flow distribution
  • Compact design
  • Modular and exchangeable inserts