Mo-Con The Mo-Con (modular concept) die from Kuhne is a stackable blown film die that can be used to produce film with five to 17 layers. The die is side-fed, with the binary splitting of the melt taking place on the flat outer part of the plates, or modules. The modular design allows the die to be expanded to produce more layers. For example, a customer could buy a nine-layer die and expand it to produce 11 layers.
What's new? The design. The die's plates, instead of being completely flat as in a typical pancake-style die, have a cone in the center, with spiral channels for the melt. The die made its U.S. debut at NPE2018.
Benefits Better temperature control and improved film quality. Because the spirals are machined in a cone at the center of the modules, the die body has a smaller diameter, so there is less steel to heat. This yields better die temperature control and faster temperature changes. Also, the spirals orient the melt flow at a very shallow angle to merge with the other layers, reducing the risk of inter-facial instability.
Kuhne Anlagenbau GmbH, Mississauga, Ontario, 416-700-7444, www.kuhne-group.com
