Stress development in plastic sheet extrusion

T. W.David Chan, L. James Lee*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The development of flow‐induced stresses in extruded sheet made of polypropylene was analyzed. A theoretical model was developed to simulate velocity, temperature, and stress profiles for polymeric materials flowing inside a slit die. The output of this simulation was then used to compute temperature and stress profiles as the extrudate emerged from the die, cooled, and relaxed under no draw conditions. Simulated surface stresses and stress profile across the extruded sheet agreed well with the experimental data for the die temperature effect and the die gap effect at low draw ratios.

Original languageEnglish
Pages (from-to)731-739
Number of pages9
JournalPolymer Engineering & Science
Issue number11
StatePublished - Jun 1989


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