The blown film process is a complex manufacturing process in which film properties are found to be greatly influenced by the fabrication vari ables from which the film was produced. This article will focus on the control of these variables to demonstrate the methods of process control used for op timization of film properties for a linear low density polyethylene (LLDPE). The influences of crystallinity and orientation of polymer molecules must be correlated to fabrication variables to provide insight as to why the film proper ties vary.
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