# Measurement of thermal contact resistance between the mold and the polymer for the stretch-blow molding process

Abstract : In the stretch-blow molding process, the heat transfer between the polymer and the mold is of prime interest. Although the time of contact is very short (typically around 0.5 s), the heat transfer affects the mechanical properties of the bottle, and the quality of final parts. In order to model heat transfers at the interface, a classical approach - generally adopted in numerical softwares - is to impose the heat flux density boundary condition thanks to a parameter called Thermal Contact Resistance (TCR). This paper focuses on describing the experimental method developed in order to measure evolution of this thermal parameter (TCR) versus time, as well as results obtained on the CROMeP blowing machine. In this study, a mold has been instrumented with two different sensors. The first probe allows to estimate the heat flux density and temperature at the mold surface temperature, using a linear inverse heat condution problem (Function Specification Method). The second device is used to measure the surface temperature of the PET during the blowing. This measurement is non intrusive, and can be applied within an industrial environment during the blowing step. In addition, air pressure inside the preform is also measured during the blowing. This work is part of the European project APT_PACK'' (Advanced knowledge of Polymer deformation for Tomorrow's PACKaging).
Keywords :
Document type :
Conference papers

Cited literature [9 references]

https://hal.archives-ouvertes.fr/hal-01709507
Contributor : Imt Mines Albi Ecole Nationale Supérieure Des Mines d'Albi-Carmaux <>
Submitted on : Tuesday, March 5, 2019 - 5:47:24 PM
Last modification on : Thursday, March 21, 2019 - 11:00:20 AM
Long-term archiving on: Thursday, June 6, 2019 - 5:55:47 PM

### File

MS14-11.pdf
Files produced by the author(s)

### Identifiers

• HAL Id : hal-01709507, version 1

### Citation

Maxime Bordival, Fabrice Schmidt, Yannick Le Maoult, Elian Coment. Measurement of thermal contact resistance between the mold and the polymer for the stretch-blow molding process. 10th ESAFORM conference on material forming, Apr 2007, Zaragoza, Spain. p.1245-1250. ⟨hal-01709507⟩

Record views