| Titre : |
Stay cool, even when things get hot : Active cooling zone for foam extrusion |
| Type de document : |
texte imprimé |
| Auteurs : |
Kai Johann, Auteur ; Christian Bonten, Auteur ; Philipp Thieleke, Auteur ; Timo Räpple, Auteur ; Johannes Hahn, Auteur |
| Année de publication : |
2024 |
| Article en page(s) : |
p. 38-41 |
| Langues : |
Anglais (eng) |
| Catégories : |
Matières plastiques -- Refroidissement
Mousses plastiques -- Extrusion
Polypropylène
Polystyrène
Systèmes de refroidissement
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Plastic foams are important for resource conservation and material efficiency by reducing the part density. In order to produce a foam with a low density and a uniform bubble structure, the plastic melt, loaded with the blowing agent, must be cooled before entering the mold. Therefore, the IKT at the University of Stuttgart in Germany and Helix GmbH are developing a new, active cooling zone for foam extrusion in a joint research project. |
| Note de contenu : |
- "Static-dynamic" cooling
- Modular screw design
- Reduction of the melt temperature
- What affects foam density ?
- Fig. 1 : Schematic representation of the newly developed foam extrusion system
- Fig. 2 : Pressure loss occurring along the newly developed cooling zone for four different screw geometries, two different materials and two oil temperatures
- Fig. 3 : Melt temperature of PP after exiting the cooling zone as a function of oil temperature for four different screw geometries at 50 rpm
- Fig. 4 : Melt temperature of PS after exiting the cooling zone as a function of oil temperature for four different screw geometries at 50 rpm
- Fig. 5 : Light microscopy images of PS foamed with 0.1 wt. % N2 (top) and PP foamed with 0.2 wt.% N2 (bottom). The gas-filled voids are depicted in black |
| En ligne : |
https://drive.google.com/file/d/1C1X7hFAzrjCkJ06neqjupS8Rw-OaY29I/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40805 |
in PLASTICS INSIGHTS > Vol. 114, N° 1-2024 (2024) . - p. 38-41
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Stay cool, even when things get hot in PLASTICS INSIGHTS, Vol. 114, N° 1-2024 (2024)
