[article]
| Titre : |
Improving flow balance during filling a multi-cavity mold with modified runner systems |
| Type de document : |
texte imprimé |
| Auteurs : |
T.-C. Huang, Auteur ; P.-H. Huang, Auteur ; S.-Y. Yang, Auteur ; T.-Y. Ko, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
p. 363-369 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
Multi-cavity injection molding has been regarded as low cost mass-production method for producing plastic products such as optical elements. However, the flow imbalance during filling a multi-cavity mold using symmetrical runner system is a serious problem. This paper is devoted to improving the flow balance by modifying the runner system design. For this purpose, four eight-cavity molds with four modified symmetrical runner systems are designed, constructed and tested. They are tapering H-type runners, pinned H-type runners, curved A runners, and curved B runners. The flow imbalance in each runner system is observed and measured with the aid of short-shot experiments. The experimental results indicate that the tapering H-type runner system can improve flow balance. The pinned H-type runner system fails to improve flow balance. The curved A and B runner system can reverse the imbalance trend, but the stability of the curved systems is poor at high melt temperature. |
| DOI : |
10.3139/217.2075 |
| En ligne : |
https://drive.google.com/file/d/1iLprWRv9qTDPxgusQzXTC7QvZuNnKH-1/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2617 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIII, N° 4 (09/2008) . - p. 363-369
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