Titre : |
A novel eco-combination tannage of chrome-free leather with softness and high shrinkage temperature |
Type de document : |
texte imprimé |
Auteurs : |
Luo Jian-Xun, Auteur ; Feng Yan-Juan, Auteur |
Année de publication : |
2022 |
Article en page(s) : |
p. 99-105 |
Note générale : |
Bibliogr. |
Langues : |
Anglais (eng) |
Catégories : |
Agents de tannage Cuirs et peaux de bovins Douceur (toucher) Formulation (Génie chimique) Tannage chrome free Tannage combinéLe tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en œuvre par exemple Chrome-Végétal ou Chrome-Synthétique Température de retrait
|
Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
Résumé : |
Chrome-tanned leathers have good comprehensive properties but, tannery effluents with high salinity, chromium and leather scraps containing chromium have a serious environmental impact. Non-chrome tannage is one of tannages that can reduce the pollution. Current non-chrome tanned leather can't, unfortunately meet the needs of the leather market regarding shrinkage temperature, softness, handle and other properties. In this study, a novel combination tannage was developed. The novel non-chrome tanning agent SL was directly employed to tan bated bovine hide producing wet-white. The shaved wet-white was further tanned by Tara, Sellatan RL and Lutan BN and was then fatliquored. It was found that the optimal consumption of the tannins — novel non-chrome tanning agent SL, Tara, Sellatan RL and Lutan BN was 5wt % for SL (based on 150% times of the weight of bated hide pelt) and 6wt% for each of the other three tannins (based on the weight of the shaved wet¬white). The shrinkage temperature of the finished leather can reach over 100°C and the leather has good softness, handle and mechanical properties. Compared with the traditional chrome tanning the conventional pickling process was eliminated, thus the process was shortened and the pollution by sodium chloride was reduced. The quality of the non-chrome leather approaches that of chrome-tanned leather. The non-chrome leathers of pilot production have been approved and accepted by the leather market. |
Note de contenu : |
- EXPERIMENTAL PROCEDURES : Materials - Design of the novel combination tannage - Tanning experiment with different chrome-free agents including the novel chrome-free agent SL, Tara, Sellatan RL and Lutan BN - Contrast experiment between the novel combination tannage and traditional chrome tanning - Pilot production of leather tanned by the novel combination tannage
- RESULTS AND DISCUSSION : Analysis of tanning properties of several chrome-free agents and the leather - Analysis of tanning properties of different tanning recipes and the softness of the leather - Comparison of the novel combination tannage and traditional chrome tanning -The properties of leather tanned by the novel combination tannage from pilot production
- Table 1 : Procedures of tanning with SL based on bated bovine hide
- Table 2 : Procedures of tanning with Tara based on the pickled bovine hide
- Table 3 : Procedures of tanning with Lutan BN based on the pickled bovine hide
- Table 4 : Parameters of orthogonal experiment
- Table 5 : Tanning formulation of L9(34) combination tannage with different tanning agents
- Table 6 : Tanning and fat-liquoring process of combination tannage
- Table 7 : Tanning results of orthogonal experiment of combination tannage with different tanning agents
- Table 8 : The properties of leathers tanned by combination tannage and traditional chrome tanning
- Table 9 : Properties of leathers tanned by the combination tannage from pilot production |
En ligne : |
https://drive.google.com/file/d/1uIPDvuVJbzq1aHF-sYT5OfP5xV1y7WQP/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37752 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 106, N° 3 (05-06/2022) . - p. 99-105