ARTICLE:

• COMPARISON BETWEEN A NUMERICAL MODEL AND AN XPERIMENTAL APPROACH OF PREFORM INFRARED RADIATIVE HEATING-RECENT RESULTS  download article

Serge Monteix
Ecole des Mines d'Albi-Carmaux Campus Jarlard, Route de Teillet, 81013 ALBICT, Cedex 09, France

F. Schmidt
Ecole des Mines d'Albi-Carmaux Campus Jarlard, Route de Teillet, 81013 ALBICT, Cedex 09, France

Y. Le Maoult
Ecole des Mines d'Albi-Carmaux Campus Jarlard, Route de Teillet, 81013 ALBICT, Cedex 09, France

G. Denis
Perrier-Vittel M.T., BP 43 88805 Vittel Cedex, France

M. Vigny
Perrier-Vittel M.T., BP 43 88805 Vittel Cedex, France

ABSTRACT

The injection stretch-blow moulding process of thermoplastic bottles requires a heating step before forming. An amorphous preform is heated above the glass transition temperature (80°C for the P.E.T.) using an infrared oven. This step is fundamental in order to determine the thickness distribution along the preform height and then insure high quality bottles. Thus, the optimisation of the infrared oven is necessary. Various experiments have been conducted to characterise the heat source and the semi-transparent properties of the P.E.T. Measurements of air temperature inside the infrared oven and air cooling speed have been processed. These parameters have been implemented in a control volume software that simulates the heating step. The surface temperature distribution of the preform has been measured using an infrared camera. Comparisons between experimental and numerical results for a rectangular sheet and a rotating preform are presented.

 download article

1017-1024 pages

« Previous article         Next article »