| Titre : |
PET : from A to C : Upcycling of mixed APET bottle flakes into thermally stable rCPET food trays |
| Type de document : |
texte imprimé |
| Auteurs : |
Sven Engelmann, Auteur ; Christoph Stoye, Auteur ; Georg Sposny, Auteur ; Carl-Jürgen Wefelmeier, Auteur ; Daniel Ganz, Auteur ; Nicky Klammt, Auteur ; Janine Wyss, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 41-43 |
| Langues : |
Anglais (eng) |
| Catégories : |
Bouteilles en matières plastiques -- Recyclage
Emballages en matières plastiques
Extrudeuse à système multirotatif
Matières plastiques -- Additifs
Matières plastiques -- Extrusion
Matières plastiques -- Recyclage
Matières plastiques -- Thermoformage
Polyéthylène téréphtalate
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Enhancing mixed bottle flakes by turning them into extrudable recycled crystalling polyethylene terephthalate (rCPET) was the goal of a joint development project looking to close the gap in the PET recycling system. By successfully producing a sheedt made from recycled material suitable for high-quality applications such as thermoformed food trays, Gneuss, Sukano and Illig have demonstrated that this approach is indeed possible. |
| Note de contenu : |
- Homogeneous melt with MRS extrusion
- Additives for color and crystallization
- rCPET food trays
- Extrusion of the sample sheets with different additives
- Process-controlled thermoforming technology
- Striking a balance between forming accuracy and thermal stability
- Oven tests in packaging lab
- In conclusion : potential for high-quality applications
- Figure : Thermally stable rCPET food trays made from multicolor APET bottle flakes
- Fig. 1 : Process overview : from multicolor APET bottle flakes to CPET for oven-safe food trays
- Fig. 2 : Multi rotation extruder system with satellite screws arranged around main screw
- Fig. 3 : Surface renewal for the decontamination of plastics : the MRS technology is 100 times more effective than conventional single-screw technology thanks to its satellite screws
- Fig. 4 : The timeline of the dynamic melt viscosity shows an increase from around 800 to 1000 Pa-s as a result of the addition of 1% rPET IV enhancer
- Fig. 5 : Chain-growth polymerization mechanism using the rPET IV enhancer
- Fig. 6 : Oven tests at 200°C for 20 min : rCPET trays ; upper heater at 250°C ; upper and lower heating lower heater at 270°C
- Fig. 7 : rCPET food trays made from material sheet 5 before and after the oven test at 270°C on upper and lower heater
- Table 1 : Material rolls with different additives
- Table 2 : Forming accuracy for the thermoforming test of the sample material rolls (control sample and rCPET) at different temperatures of upper and lower heaters (OHZ UHZ) |
| En ligne : |
https://drive.google.com/file/d/1tEsSXTOfdquNUDWrN-qtGmz_JZ14TY7n/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32990 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 109, N° 6-7 (06-07/2019) . - p. 41-43
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Ajouter le résultat dans votre panier Affiner la rechercheTransparent and temperature-resistant up to 100 °C / Daniel Ganz in KUNSTSTOFFE INTERNATIONAL, Vol. 111, N° 9 (2021)
