| Titre : |
Heating of the mash seam : Variothermal temperature control in extrusion blow molding improves quality of the weld line |
| Type de document : |
texte imprimé |
| Auteurs : |
Christian Hopmann, Auteur ; Dominik Foerges, Auteur ; Malte Schön, Auteur ; Martin Facklam, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 38-41 |
| Langues : |
Anglais (eng) |
| Catégories : |
Lignes de soudure
Matières plastiques -- Moulage par extrusion-soufflage
Simulation par ordinateur
Température -- Contrôle
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Extrusion blow molding enables cost-effective production of hollow plastic articles with complex geometries and differing volumes. One disadvantage, however, is that blow-molded components often fail at the weld line. Variothermal temperature control can be utilized to significantly improve the quality of the weld line. |
| Note de contenu : |
- Targeted introduction of heat
- Materials and methods
- Simulation of the weld line
- Formation of the weld line in the blow molding trials
- Simulation and practical trials in comparison
- Figure : Weldline as a problem : the view of extrusion blow molded hollow articles under a polarization microscope shows that without temperature control, a cold plug shringking inwards leads to a notch that reduces the quality of the weld line
- Fig. 1 : Variothermal temperature controlled cutting edge with integrated heating cartridge and cooling channel
- Fig. 2 : Schematic representation of blow molding cycle and temperature of the cutting edge
- Fig. 3 : Position and size of the microtome sections at the base of the bottle
- Fig. 4 : Parameters and boundary conditions for the simulation of the cutting edge
- Fig. 5 : Simulation of the cutting edge for different temperatures and times
- Fig. 6 : Polarization micrographs of the weld line at different cutting edge temperatures
- Table 1 : Experimental design of themachine parameters for flow molding tests with variothermal (v) and conventional (c) temperature control |
| En ligne : |
https://drive.google.com/file/d/1XUQVTth3cHP0lADVzq8qbd5iUJ_pH5Zk/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34074 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 3 (2020) . - p. 38-41
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