Technology and stress relaxation of biaxially oriented polyolefin shrink films

Arthur Bobovitch, Yakov Unigovski, Albert Jarashneli, Emmanuel M. Gutman

Research output: Contribution to journalArticlepeer-review

Abstract

In the present study the influence of the heating rate on the stability of the double bubble technological process was investigated. It was shown that increasing the heating rate decreases the stability of the process and causes the lower elongation of the films produced. The morphological transformations of linear low density polyethylene (LLDPE) film were explained using X-ray and transmission electrom microscopy (TEM) methods. The stress relaxation behavior of co-extruded LLDPE/ethylene-vinyl-acetate (EVA) film was studied using the relaxation time spectrum approach. The influence of vinyl-acetate (VA) content in EVA copolymers on the relaxation time spectrum was observed.

Original languageEnglish
Pages (from-to)241-250
Number of pages10
JournalMacromolecular Symposia
Volume214
DOIs
StatePublished - 1 Aug 2004

Keywords

  • Morphology
  • Polyolefin film
  • Relaxation time spectrum
  • Stress relaxation

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