- Conference date: 30–31 July 2013
- Location: Zlin, Czech Republic
In this work, variational principle based film blowing model combined with Pearson and Petrie formulation, considering non-isothermal processing conditions and novel generalized Newtonian model allowing to capture steady shear and uniaxial extensional viscosities has been validated by using experimentally determined bubble shape and velocity profile for LDPE sample on large scale film blowing line. It has been revealed that the minute change in the flow activation energy can significantly influence the film stretching level.
- Variational principles
- Activation energies
- Extensional flows
- Shear rate dependent viscosity
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