| Titre : |
Modelling of the plastisol knife over roll coating process |
| Type de document : |
texte imprimé |
| Auteurs : |
Y. Abdesselam, Auteur ; Y. Demay, Auteur ; Romain Castellani, Auteur ; Jean-François Agassant, Auteur ; R. Peres, Auteur ; D. Gourdin, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 555-561 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Chlorure de polyvinyle
Formulation (Génie chimique)
Modèles numériques
Revêtements de sols
Rhéologie
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The knife-over-roll coating process of plastisol formulations for flooring applications has been investigated. The coexistence of smooth spherical PVC particles and rough calcium carbonate aggregates in a Newtonian plasticizer makes this suspension a more complex system than those encountered in the literature. The shear viscosity has been measured with Couette and capillary devices in the wide range of shear rates encountered in the process, resulting in a non-monotonous viscosity curve. A numerical model based on the lubrication approximation theory allows accounting for this non-monotonous behavior. It predicts the deposited thickness, the pressure field between roll and knife and the separating force as a function of the plastisol rheology and the coating parameters.
|
| Note de contenu : |
- INTRODUCTION : Bibliography - The different plastisol formulations - Modelling
- RHEOLOGY OF PLASTISOL FORMULATIONS : Rheology measurements protocol - Typical rheology curve
- MODELING OF THE COATING PROCESS : The lubrification approximations - Rheology and stress balance equations - The numerical computation
- RESULTS : Influence of the processing parameters - Influence of the plastisol formulation |
| DOI : |
10.3139/217.3422 |
| En ligne : |
https://drive.google.com/file/d/1aALu3hsyR0Ww_HhL1cN5L1qEJbl4QnXE/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29421 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXII, N° 5 (11/2017) . - p. 555-561
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