In this paper, a model is presented that enables us to get a better understanding of the relationship between polymer type, machine parameters and blown film properties for PE. For the mechanical properties it appears that the key parameter is the stress at the freeze line. Validation of the model on different blown film lines has proven its reliability for LDPE. Furthermore, the model has been extended to binary LDPE/LLDPE blends, demonstrating its versatility for PE in general.
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