Affiliation:
1. Idemitsu Petrochemical Co. Ltd. , Chiba Ken , Japan
Abstract
Abstract
Theoretical analysis of the tubular film extrusion using computer simulation presented has been used to preduct bubble shapes, velocity profiles and stretching stresses. From the theoretical analysis, maximum stretching stresses, which are closely related to film physical properties, were predicted under various process conditions.
This theoretical analysis was applied to high molecular weight HDPE tubular film process. It was found that high strength HDPE film can be produced by maintaining high stretching stress, which is obtained on the conditions of high out-put rate, high take-up speed and low temperature by reducing the heat generated by viscous dissipation.
Further, the processability of HDPE film produced using bubble stabilizing equipment was discussed.
Subject
Materials Chemistry,Industrial and Manufacturing Engineering,Polymers and Plastics,General Chemical Engineering
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