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Influence of chemical architecture of PET on ability to stretch blow moulding

Abstract : PET specific properties make this material a good candidate for stretch blow moulding. However chemical architecture of the resin can be varied by the supplier. These changes induce different draw abilities or different behaviours whilst blowing. In this study some well controlled PET resins are characterized both from the point of view of their intrinsic properties and from the point of view of their process abilities. Results enlighten clearly the tight correlation between the chemical structure and the behaviour of the polymer. Coupling effects between the structure, the laboratory properties and the process ability exist making this process a highly not intuitive processing. This study allows, in parallel, proposing a global approach to estimate blowing ability from laboratory analysis.
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Elise Deloye, Jean-Marc Haudin, Noëlle Billon. Influence of chemical architecture of PET on ability to stretch blow moulding. 11th ESAFORM Conference on Material Forming, Apr 2008, Lyon, France. pp.Pages 715-718, ⟨10.1007/s12289-008-0315-6⟩. ⟨hal-00510331⟩

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