| Titre : |
Balanced mixing screw for single-screw extruder : Design of mixing elements for demanding extrusion processes |
| Type de document : |
texte imprimé |
| Auteurs : |
Christian Marschik, Auteur ; Otto Skrabala, Auteur ; Jürgen Miethlinger |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 46-49 |
| Langues : |
Anglais (eng) |
| Catégories : |
Malaxeurs et mélangeurs
Matières plastiques -- Extrusion -- Appareils et matériels
Vis d'extrusion simple
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The homogenization of the melt – for example when coloring plastic – is a fundamental prerequisite for good end product quality in extrusion. Homogeneity is determined to a large extent by the mixing section. However, a supposedly intensive mixer is not always the best choice. |
| Note de contenu : |
- Variety of geometries
- Result 1 - Velocity field
- Result 2 - Pressure consumption
- Result 3 - Dissipation
- Result 4 - Distributive mixing
- Result 5 - Stretching
- Conclusion : Basis for new geometries
- Table : lnvestigated single-screw mixer geometries : the number of flights and blocks was varied; the identical single screw no. 3 and 5 serves as the reference geometry
- Fig. 1 : Investigated block-head mixers : the nominal dia-meter of the block-head mixers is 60 mm. Reference geometries 3 and 5 are identical
- Fig. 2 : Velocity field of high-molecular HDPE pipe grades : a) in the axial direction, b) in the cross-section of one block, and c) in the cross-section in between two blocks
- Fig. 3 : Pressure loss: influence of the number of flights per block (a) and blocks (b)
- Fig. 4 : Dissipation: influence of the number of flights per block (a) and blocks (b)
- Fig. 5 : Particle distribution for geometry 1: a) at the start and b) at the end of the block-head mixer
- Fig. 6 : Particle distribution at the end of the block-head mixer: a) for geometry 1 and b) geometry 8
- Fig. 7 : Particle surface stretching at the end of the block-head mixers: influence of the number of flights per block and blocks |
| En ligne : |
https://drive.google.com/file/d/1iyPeNsI01amr1CobMm3433IKSohAmXst/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31030 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 108, N° 6 (06-07/2018) . - p. 46-49
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Balanced mixing screw for single-screw extruder in KUNSTSTOFFE INTERNATIONAL, Vol. 108, N° 6 (06-07/2018)
