| Titre : |
High gloss - Paintless and painless : Predicting the surface finish of high-gloss plastic parts |
| Type de document : |
texte imprimé |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 28-31 |
| Langues : |
Anglais (eng) |
| Catégories : |
Brillance (optique)
Composites à fibres de verre
Matières plastiques -- Moulage par injection
Polyamide 6
Polycarbonates
Simulation par ordinateur
Surfaces (technologie)
Terpolymère acrylonitrile butadiène styrène
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Skilful application of the evaluation and analytical options afforded by process simulation, including designing the best temperature-control system and making comparisons with alternative manufacturing processes, smoothes the way to efficient product development and manufacturing. Doing this from the very start of a project enables investments to be weighed and qualified, and technical, economic or environmental concerns to be taken into account, as exemplified here by a part with a high-gloss surface. |
| Note de contenu : |
- Weighing the costs and benefits of variothermal temperature control
- High-gloss surface – with limitations
- Comparison of energy consumption: variothermal versus painting
- Simulation for the purpose of cost estimation
- All or nothing: high gloss on glass fiber
- Painting needed or even possible ? Use empirical values
- - Fig. 1 : The view of the mold interior in the simulation model shows the temperature difference at the end of the filling stage: variothermal control on the top side leads to higher mold temperatures than on the conventional temperature-controlled side (below)
- Fig. 2 : The PC+ABS reference part had a high-gloss surface in both process variants, but weld lines were absent only in the variothermal variant
- Fig. 3 : Particle tracking shows the temperature of the weld lines as they form. In the variothermal variant (right), the temperature of the melt fronts on the visible surface (top side) is still so high that they do not show up as weld lines
- Fig. 4 : The simulation of the shear stresses (bottom) indicates the direction in which the downstream surface quality of the PA6-GF30 real part is likely to trend – shown here is the higher-quality surface produced by variothermal temperature control
|
| En ligne : |
https://en.kunststoffe.de/a/specialistarticle/high-gloss-paintless-and-painless- [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37961 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 112, N° 4 (2022) . - p. 28-31
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High gloss - Paintless and painless in KUNSTSTOFFE INTERNATIONAL, Vol. 112, N° 4 (2022)
