[article]
| Titre : |
How many layers are enough ? : Properties of multi-layer stretch films compared |
| Type de document : |
texte imprimé |
| Auteurs : |
Maximilian Vielhauer, Auteur ; Pierre Nollau, Auteur ; Irene Schröter, Auteur ; Bert Wölfli, Auteur ; Peter Sandkühler, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 71-75 |
| Langues : |
Anglais (eng) |
| Catégories : |
Films plastiques -- Propriétés mécaniques
Films plastiques étirables
Structures multicouches
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Ever since pallet stretch wrap was introduced, the number of layers in high-performance films has been steadily rising. But how many layers does a film need in order to form a stable load unit? Polifilm Extrusion asked itself this question and compared films with 11, 13, and 55 layers. |
| Note de contenu : |
- Types of load units and stretch wrapping methods
- Types of stretch films
- Investigation of versatility and complexity
- Tests
- Evaluation
- FIGURES : 1. Different shaped load units : straight and flush with the pallet (type A), with protrusion sabove and/or below (middle : type B) and very unevenly arranged goods (type C) - 2. Elongation behavior of a stretch film with mainly elastic zone (A), plateau (C) and working zone (D) - 3. Stretching force-elongation diagram of films with low elongation and high holding forces, medium elongation and moderate holding forces and very high elongation - 4. Layer structure of coextruded 13- and 55-layer fims : Extruder A, D to G in each case 10% of overall thickness, extruder B and C each 25% of overall thickness - 5. Test equipment and process : FPT-750 from ESTL and practical test on the test pallet with puncture and plate test
- Table : Overview of the formulations tested on the 13- and 55, layer line - 6. Stretching force-elongation diagram of fims from the 13- and 55-layer line : a) easy flow film with 12, 15, and 23 µm thicknesses, b) strong film with 12 and 15 µm and c) high elongation film with 15 and 23 µm - 7. Stretching force-elongation diagram of a 15 µm thick high elongation film from the 11-, 13-, and 55-layer lines |
| En ligne : |
https://drive.google.com/file/d/1JiNq9PUpkepW4jvih9RCRVTQGVS_YnAP/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29285 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 10 (10/2017) . - p. 71-75
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