| Titre : |
IR-marked sewing and embroidery yarns for protection against forgery |
| Type de document : |
texte imprimé |
| Auteurs : |
Karola Schäfer, Auteur ; Rostislav Vinokur, Auteur ; Andrij Pich, Auteur ; Martin Möller, Auteur ; Volkan Yavuz, Auteur ; Philipp Kreis, Auteur ; Simon König, Auteur ; Michael R. Buchmeiser, Auteur ; Stefan Schindler, Auteur ; Bauder Hans-Jürgen, Auteur ; Götz T. Gresser, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 200-203 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Broderie
Caractérisation
Couture
Dispersions et suspensions
Falsification -- Lutte contre
Fil partiellement orienté
Hexaborure de lanthane
Mélanges-maîtres (chimie)
Nanoparticules
Pigments
Polyéthylène téréphtalate
Rayonnement infrarouge
Tungstate de césium
|
| Index. décimale : |
677 Textiles |
| Résumé : |
Sewing and embroidery yarns containing NIR-absorbing nanopigments as safety markers based on lanthanum hexaboride and cesium tungstate nanoparticles were developed. Homogeneous dispersion of the nanopigments within polyethylene terephthalate (PET) yarns was achieved by appropriate surface modification of the particles. The nanopigments were added in masterbatches to the PET melt for fabrication of partially oriented yarns (POY). These were processed further by drawing and twisting for sewing and embroidery yarns. The safety marking can be detected by NIR-irradiation and visualized by thermal imaging. More detailed analysis of the pigment composition and fiber structure, e.g. by electron microscopy combined with EDX element analysis allows unambiguous verification of the genuineness. |
| Note de contenu : |
- Selection and characterization of NIR nanopigments
- Masterbatch fabrication and spining of marked PET POY
- Production of marked drawn yarns
- Production of marked sewing and embroidery yarns
- Embroidery samples
- Proof of the effect
- Unambiguous proof of evidence |
| En ligne : |
https://drive.google.com/file/d/1LpAR2qmVkMBSFT5wZfyQvG7_k8TR6NLm/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38479 |
in CHEMICAL FIBERS INTERNATIONAL > Vol. 72, N° 4 (11/2022) . - p. 200-203
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