| Titre : |
Perspectives on the transition from batch to continuous mixing technologies in the compounding industry |
| Type de document : |
texte imprimé |
| Auteurs : |
J. L. White, Auteur ; S. H. Bumm, Auteur |
| Année de publication : |
2010 |
| Article en page(s) : |
p. 322-325 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Ecoulement visqueux
Fluides, Mécanique des
Malaxeurs et mélangeurs
Mélanges (chimie)
Polymères
|
| Index. décimale : |
668.9 Polymères |
| Résumé : |
During the last quarter of the 20th century, there was a transition from batch to continuous mixing in the polymer and food industries. We present and summarize experimental studies of flows in both internal and continuous mixers. Simulation of flow in these machines is also described. It is argued that the primary reason for this transition was that continuous mixers produce more uniform and better quality mixes, and that this is inherent in their different fluid mechanics. Batch mixers are always starved and largely unpressurized. Their complex fluid mechanics produce non-uniform mixing in the various portions of the compound material. Continuous mixers set up a steady state hydrodynamic flow field generally consisting of alternating regions of pressurized fully filled flow and starved flow. All of the compounds must pass through these regions to reach the die exit and thus possess uniform mixing histories. This uniform deformation history which includes pressurized mixing regions produces superior uniform products. |
| DOI : |
10.3139/217.2293 |
| En ligne : |
https://drive.google.com/file/d/19bAi7f7DGKhQDMpIye_t-RBs2qTCTLN2/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10249 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXV, N° 5 (11/2010) . - p. 322-325
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Perspectives on the transition from batch to continuous mixing technologies in the compounding industry in INTERNATIONAL POLYMER PROCESSING, Vol. XXV, N° 5 (11/2010)
