| Titre : |
Luminous markers instead of holy grail : Improved sorting of plastic waste with luminescent pigments |
| Type de document : |
texte imprimé |
| Auteurs : |
Alexander Baumann, Auteur ; Dominik Uhlich, Auteur ; Helmut Löw, Auteur ; Walter Braumandl, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 39-43 |
| Langues : |
Anglais (eng) |
| Catégories : |
Dispositifs de tri
Luminescence
Marqueurs lumineux
Matières plastiques -- Déchets
Phosphorescence
Pigments à effets spéciaux
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The HolyGrail 2.0 Initiative aims to improve the sorting of plastic waste. For this purpose, digital watermarks containing information on packaging type, material, and usage will be applied on products. However, the method also has certain drawbacks. Here, luminescent pigments provide an alternative that is permanent and can withstand several processing cycles. |
| Note de contenu : |
- Difficulties of HolyGrail 2.0
- Processing-resistant permanent markers
- Robust luminescent pigments
- Fluorescence or phosphorescence
- Four application areas for the batches
- Supply chain monitoring with blockchain
- Combining marker and HolyGrail
- Fig. 1 : The luminescent pigments are stimulated by light, and their emissions measured. Evaluation software is used to visualize the results
- Fig. 2 : By selecting certain marker point (marker set), an individual product marking can be defined. The set is stored, and can later be used for identification
- Fig. 3 : The masterbatches are added during the extrusion process as usual. Hereby, sensors ensure that the correct marker and the right quantity are involved
- Fig. 4 : The stored star pattern is specific for every packaging
- Fig. 5 : When using recyclates, the masterbatch quantity is adapted to the concentration of TagTec markers contained in the recyclate, thereby ensuring that this is matched precisely to the manufactured product |
| En ligne : |
https://drive.google.com/file/d/1EiMBgMxvzpj31I7ssVhij9VbzLltAGLK/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38102 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 112, N° 6 (2022) . - p. 39-43
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