[article]
| Titre : |
Visualization of melt-flow behavior inside the runner in ultra high speed injection molding |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Hasegawa, Auteur ; H. Yokoi, Auteur |
| Année de publication : |
2006 |
| Article en page(s) : |
p. 464-472 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
Ultra-high-speed injection molding is a highly effective technique for realizing very thin-walled molded parts; its application to the production of new high value-added products is anticipated. The melt-flow behavior in ultra-high-speed injection molding is expected to differ from that in conventional molding. However, thus far, very few studies pertaining to the phenomena occurring within cavities and runners at such high filling speeds have been reported, thus necessitating the direct observation of melt-flow behavior inside the molds. In this study, we attempted to dynamically visualize the meltflow behavior at the runner split portion, especially under ultra-high-speed injection molding. Visualization experiments were conducted using a glass-inserted mold, which was modified from the original visualization mold structure in order to improve the pressure endurance of the glass-inserted visible area. This paper discusses the visualization analyses of meltflow behavior in two types of experimental split runner systems (three inclined split runners and cross-shaped runners in a cascade layout). The behavior at the runner split area was studied under low to ultra-high-filling rates. The analyses clarified the effects of inertia at the runner branching point, which has not been verified in general injection molding, and the consequent changes in the filling behavior. |
| DOI : |
https://doi.org/10.3139/217.0997 |
| En ligne : |
https://drive.google.com/file/d/1SttkV178jpaTfR20bVuN3FeALuvqWQqu/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2800 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXI, N° 5 (11/2006) . - p. 464-472
[article]
|
Aller sur edunet
Accueil
Visualization of melt-flow behavior inside the runner in ultra high speed injection molding in INTERNATIONAL POLYMER PROCESSING, Vol. XXI, N° 5 (11/2006)
