| Titre : |
Foam beads in gliding flight : A glossy surface quality for particle components |
| Type de document : |
texte imprimé |
| Auteurs : |
Erwin Bürkle, Auteur ; Thomas Schwachull, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 45-48 |
| Langues : |
Anglais (eng) |
| Catégories : |
Billes de mousse
Mousses plastiques
Ondes électromagnétiques
Polyuréthanes
Sellerie
Surfaces (technologie)
Technique des plasmas
Température -- Contrôle
Vélo -- Matériaux
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The particle foam crowd cannot complain about a lack of interest by potential users. At least as far as demand for products with high-quality functional and optical surfaces is concerned. However, development has stagnated since the joint research project SamPa sponsored by the German Federal Ministry of Education and Research reached its conclusion. There is an urgent need for action. |
| Note de contenu : |
- Skin forming for better surface quality
- Electromagnetic waves instead of steam
- Advantages of variotherm mold temperature control
- Using plasma to render EPP surfaces "compilant"
- Process monitoring requires complex sensor technology
- Figure : Before flow coating with PU, the EPP surface must be activated
- Fig. 1 : In the Wave Foamer, electromagnetic waves cause the polymer chains to oscillate, so that the foam beads are heated from the inside outward
- Fig. 2 : A-pillar of particle foam with textured surface
- Fig. 3 : Schematic representation of the skin formation in five steps
- Fig. 4 : Section through an A-pillar produced by the IMPFC process
- Fig. 5 : To activate the EPP surface, the chemical and physical interaction between the plasma and plastic causes, a) reaction of an isocyanate functional group with the PU layer, and b) a fixed atomic bond between the PU layer and EPP
- Fig. 6 : After pretreatment with plasma, EPP can be flow-coated with a semi-rigid foam, with which this pattern is flow-coated with a further PU system
- Fig. 7 : EPP saddle as a technology demonstrator : functionalized with a printed circuit and flow-coated with clear coat to investigate the depth effect (le) ; flow coated with "piano black" PU (right) in different layer thicknesses (0.5 mm, 1.5 mm and 2.5 mm), in order to illustrate the color intensity |
| En ligne : |
https://www.kunststoffe.de/en/journal/archive/article/a-glossy-surface-quality-f [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33983 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 110, N° 2 (02/2020) . - p. 45-48
Aller sur edunet
Accueil
Ajouter le résultat dans votre panier Affiner la rechercheBetter than compact injection molding ? in KUNSTSTOFFE INTERNATIONAL, Vol. 104, N° 2 (02/2014)
