Thickness Optimisation of Inflated Preforms by Varying Infrared Heating Coefficients

Maxime Bordival (1) , Yannick Le Maoult (1) , Fabrice Schmidt (1)

1 ICA - Institut Clément Ader

Injection blow moulding process [1] is basically a two steps process where a cold preform is warmed above glass transition temperature and then stretch-blown in a bottle mould. The heat conditioning step is crucial, because it allows to design the temperature distribution of the perform before forming. Longitudinal temperature distribution has a strong influence on the final thickness distribution of the bottle while thickness temperature distribution influences more the mechanical properties. In this study, we have developed a coupled optimisation procedure [2] where the coefficient of the interpolated temperature are modified in order to achieve the best blown bottle. The objective function used for optimal design of the bottle is the thickness uniformity of the bottle. Validations have been performed by comparison with simple blown bottle and computed one. ABAQUS commercial software has been used for ISBM.

Domaines: Matériaux et structures en mécanique [physics.class-ph]

Maxime Bordival, Yannick Le Maoult, Fabrice Schmidt. Thickness Optimisation of Inflated Preforms by Varying Infrared Heating Coefficients. 3ème congrès Rotomoulage, Thermoformage et Soufflage, Mar 2009, Albi, France. ⟨hal-02194626⟩