Rheological Properties and Processing

  • Helmut Münstedt
  • Friedrich Rudolf Schwarzl


Rheological properties of a polymer can be very useful to assess some aspects of processing. For a successful application of rheological data it has to be taken into account, however, that they strongly depend on temperature, time, and stress or strain rate, respectively. Therefore, the rheological behavior measured in laboratory tests can be of relevance for processing only, if the regimes of the parameters mentioned above are comparable to each other. The role of melt flow rate and viscosity functions for processing is discussed. Furthermore it is shown, how the measurement of flow profiles can be used to get a deeper insight into the reduction of “shark skin” and the extrusion of cast films. Finally, the importance of the elongational behavior of melts for film blowing and foaming is addressed.


Strain Hardening Flow Profile Elongational Rate Film Casting Elongational Viscosity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Lehrstuhl für PolymerwerkstoffeFriedrich-Alexander-Universität Erlangen-NürnbergErlangenGermany

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