Analysis of the non-isothermal Newtonian model in the blown film process

J. C. Bennett, J. J. Shepherd


Film blowing is an industrial process used to produce thin sheets of polymer with a wide range of applications; for example, plastic bags. We apply analytic and numerical techniques to model this process in the simplest case where the blown material is a Newtonian fluid operating under non-isothermal conditions. In particular, we obtain the thermal profile along the film, and the effects of this thermal variation on the film bubble radius.

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ANZIAM Journal, ISSN 1446-8735, copyright Australian Mathematical Society.