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      On Induced Properties and Self Heating during Free Blowing of PET Preform

      1 , , 1 , *

      International Polymer Processing

      Carl Hanser Verlag

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          Abstract

          The great influence of temperature on polymer's behavior is well known and a 10°C increase can lead to a 10-time reduction of the viscosity near the glass transition temperature. To manage accurate simulation of thermoforming processes, and particularly the stretch blow molding process that is managed in the vicinity of T g, it is necessary to take into account the self heating phenomena that may have impact on induced properties. In the particular case of polyethylene terephthalate (PET), injected preforms have been blown with different initial temperature and followed using a thermal camera. For an identical final volume of the blown preform, the influence of initial temperature on self-heating is discussed. Back to room temperature, induced mechanical properties are measured using digital image correlation: bottles are blown under different pressures and the strain fields are measured. Using the virtual field method on a region of interest of the bottle, these results allow the identification of the induced mechanical properties. Comparison between the self-heating and the induced modulus is managed and the effect of the self heating on the free blown shapes and induced properties is discussed.

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          Most cited references 15

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          Experimental study and numerical simulation of preform or sheet exposed to infrared radiative heating

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            Effects of temperature profiles through preform thickness on the properties of reheat-blown PET containers

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              Experimental investigation of stretch blow molding, Part 2: Analysis of process variables, blowing kinematics, and bottle properties

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                Author and article information

                Journal
                ipp
                International Polymer Processing
                Carl Hanser Verlag
                0930-777X
                2195-8602
                3 July 2019
                : 34
                : 3
                : 330-338
                Affiliations
                1 Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, Marne-la-Vallée, France
                Author notes
                [* ] Correspondence address, Mail address: Luc Chevalier, Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, Marne-la-Vallée, France, E-mail: luc.chevalier@ 123456univ-paris-est.fr
                Article
                IPP3759
                10.3139/217.3759
                © 2019, Carl Hanser Verlag, Munich
                Page count
                References: 23, Pages: 9
                Product
                Self URI (journal page): http://www.hanser-elibrary.com/loi/ipp
                Categories
                Regular Contributed Articles

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