| Titre : |
Flow visualization of filling process during micro-injection molding |
| Type de document : |
texte imprimé |
| Auteurs : |
S.-Y. Yang, Auteur ; S. C. Nian, Auteur ; C. Sun, Auteur |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 354-360 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
Micro-injection molding has been under development for the mass manufacture of micro parts. This paper presents fundamental research on the filling characteristics during micro-injection molding. Flow visualization was employed to observe the fast filling process. A lab-made impact type micro-injection machine was developed and used in this study. Filling of 4 x 4 x 0.2 mm3 and 2 x 2 x 1 mm3 cavities in quartz glass molds was recorded with a high-speed video camera. The effects of the processing conditions on the filling behaviors are systematically studied. The processing parameters include air pressure, mold temperature, and melt temperature. Based on the analysis of flow patterns, it was found that the melt fronts advanced quickly and filled the cavity in less than 0.1 seconds. The filling process can be divided into impact-filling and pressure-filling stages. Mold temperature and air pressure are found to be the dominant processing parameters. |
| Note de contenu : |
- EXPERIMENTAL SET-UP : Impact type micro-injection machine - Mold construction - Image capture system and operation procedure - Processing conditions
- RESULTS AND DISCUSSION : Flow visualization of the filling process during filling of the shell-shaped cavity - Flow visualization of the filling process during filling of the block-shaped cavity - Effects of processing conditions in filling behaviors during micro-injection molding - Effects of air pressure - Effects of mold temperature - Effects of melt temperature |
| DOI : |
10.3139/217.1706 |
| En ligne : |
https://drive.google.com/file/d/1DCPLSdI11t9o9-8P3ETib79_x-4SfevY/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16039 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XVII, N° 4 (12/2002) . - p. 354-360
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Flow visualization of filling process during micro-injection molding in INTERNATIONAL POLYMER PROCESSING, Vol. XVII, N° 4 (12/2002)
