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Influence of an Increased Fiber Filler Content on the Elongation Behavior of Filled Films in the Thermoforming Process

Received: 15 May 2019     Accepted: 15 June 2019     Published: 26 June 2019
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Abstract

Thermoforming belongs to one of the most important processes in polymer processing, especially in the packaging industry. It enables the forming of thermoplastic components into shaped parts at high temperatures. Since the thermoforming of films takes place in the rubbery state, amorphous thermoplastics are mainly processed, which have a wide rubbery state. Radiation crosslinking can be used to widen the thermoforming window of semi-crystalline thermoplastics. A benefit of the crosslinking is the increased short-term temperature resistance. In general, there are only a few investigations concerning the thermoforming of filled thin films. Within this investigation, the influence of an increasing glass fiber content up to 15 vol.-% as well as the effect of radiation crosslinking on the elongation behavior and the wall thickness distribution was examined. It can be summarized that especially thermoforming with an increased filler content at high areal draw ratios represents a challenge. Whereas non-crosslinked glass fiber filled films are thermoformable only at low areal draw ratios, radiation crosslinked films can be also formed at higher areal draw ratios without difficulties. For high filler contents and high areal draw ratios, no forming is possible at high areal draw ratios, although the films have been crosslinked. The use of radiation crosslinking enables the process limit in thermoforming of thin filled films to be increased and thus the range of applications to be extended greatly.

Published in American Journal of Mechanical and Materials Engineering (Volume 3, Issue 2)
DOI 10.11648/j.ajmme.20190302.11
Page(s) 25-35
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Glass Fiber, Radiation Crosslinking, Elongation Behavior, Wall Thickness Distribution, Thermoforming

References
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Cite This Article
  • APA Style

    Lisa-Maria Wittmann, Michael Wolf, Dietmar Drummer. (2019). Influence of an Increased Fiber Filler Content on the Elongation Behavior of Filled Films in the Thermoforming Process. American Journal of Mechanical and Materials Engineering, 3(2), 25-35. https://doi.org/10.11648/j.ajmme.20190302.11

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    ACS Style

    Lisa-Maria Wittmann; Michael Wolf; Dietmar Drummer. Influence of an Increased Fiber Filler Content on the Elongation Behavior of Filled Films in the Thermoforming Process. Am. J. Mech. Mater. Eng. 2019, 3(2), 25-35. doi: 10.11648/j.ajmme.20190302.11

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    AMA Style

    Lisa-Maria Wittmann, Michael Wolf, Dietmar Drummer. Influence of an Increased Fiber Filler Content on the Elongation Behavior of Filled Films in the Thermoforming Process. Am J Mech Mater Eng. 2019;3(2):25-35. doi: 10.11648/j.ajmme.20190302.11

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  • @article{10.11648/j.ajmme.20190302.11,
      author = {Lisa-Maria Wittmann and Michael Wolf and Dietmar Drummer},
      title = {Influence of an Increased Fiber Filler Content on the Elongation Behavior of Filled Films in the Thermoforming Process},
      journal = {American Journal of Mechanical and Materials Engineering},
      volume = {3},
      number = {2},
      pages = {25-35},
      doi = {10.11648/j.ajmme.20190302.11},
      url = {https://doi.org/10.11648/j.ajmme.20190302.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmme.20190302.11},
      abstract = {Thermoforming belongs to one of the most important processes in polymer processing, especially in the packaging industry. It enables the forming of thermoplastic components into shaped parts at high temperatures. Since the thermoforming of films takes place in the rubbery state, amorphous thermoplastics are mainly processed, which have a wide rubbery state. Radiation crosslinking can be used to widen the thermoforming window of semi-crystalline thermoplastics. A benefit of the crosslinking is the increased short-term temperature resistance. In general, there are only a few investigations concerning the thermoforming of filled thin films. Within this investigation, the influence of an increasing glass fiber content up to 15 vol.-% as well as the effect of radiation crosslinking on the elongation behavior and the wall thickness distribution was examined. It can be summarized that especially thermoforming with an increased filler content at high areal draw ratios represents a challenge. Whereas non-crosslinked glass fiber filled films are thermoformable only at low areal draw ratios, radiation crosslinked films can be also formed at higher areal draw ratios without difficulties. For high filler contents and high areal draw ratios, no forming is possible at high areal draw ratios, although the films have been crosslinked. The use of radiation crosslinking enables the process limit in thermoforming of thin filled films to be increased and thus the range of applications to be extended greatly.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - Influence of an Increased Fiber Filler Content on the Elongation Behavior of Filled Films in the Thermoforming Process
    AU  - Lisa-Maria Wittmann
    AU  - Michael Wolf
    AU  - Dietmar Drummer
    Y1  - 2019/06/26
    PY  - 2019
    N1  - https://doi.org/10.11648/j.ajmme.20190302.11
    DO  - 10.11648/j.ajmme.20190302.11
    T2  - American Journal of Mechanical and Materials Engineering
    JF  - American Journal of Mechanical and Materials Engineering
    JO  - American Journal of Mechanical and Materials Engineering
    SP  - 25
    EP  - 35
    PB  - Science Publishing Group
    SN  - 2639-9652
    UR  - https://doi.org/10.11648/j.ajmme.20190302.11
    AB  - Thermoforming belongs to one of the most important processes in polymer processing, especially in the packaging industry. It enables the forming of thermoplastic components into shaped parts at high temperatures. Since the thermoforming of films takes place in the rubbery state, amorphous thermoplastics are mainly processed, which have a wide rubbery state. Radiation crosslinking can be used to widen the thermoforming window of semi-crystalline thermoplastics. A benefit of the crosslinking is the increased short-term temperature resistance. In general, there are only a few investigations concerning the thermoforming of filled thin films. Within this investigation, the influence of an increasing glass fiber content up to 15 vol.-% as well as the effect of radiation crosslinking on the elongation behavior and the wall thickness distribution was examined. It can be summarized that especially thermoforming with an increased filler content at high areal draw ratios represents a challenge. Whereas non-crosslinked glass fiber filled films are thermoformable only at low areal draw ratios, radiation crosslinked films can be also formed at higher areal draw ratios without difficulties. For high filler contents and high areal draw ratios, no forming is possible at high areal draw ratios, although the films have been crosslinked. The use of radiation crosslinking enables the process limit in thermoforming of thin filled films to be increased and thus the range of applications to be extended greatly.
    VL  - 3
    IS  - 2
    ER  - 

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Author Information
  • Institute of Polymer Technology, Friedrich-Alexander-University, Erlangen-Nuremberg, Germany

  • Institute of Polymer Technology, Friedrich-Alexander-University, Erlangen-Nuremberg, Germany

  • Institute of Polymer Technology, Friedrich-Alexander-University, Erlangen-Nuremberg, Germany

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