| Titre : |
Influence of the electric charge of leather in the process of fat-liquoring |
| Type de document : |
texte imprimé |
| Auteurs : |
Umberto Sammarco, Auteur |
| Année de publication : |
1984 |
| Article en page(s) : |
p. 351-357 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Cations
Chaussures
Chlorure de sulfonyle
Chrome
Cuir d'ameublement
Cuir pleine fleur
Humidité -- Absorption:Eau -- Absorption
Produits de nourriture du cuir
Retannage
Syntans
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
Vêtements en cuir
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
A technical process which offers the possibility of fat-liquoring the skins with auxiliary cationic fats combined with sulphonyl-chlorides without preliminary neutralization regardless of type of retan is described.
The process giving the best results, from an industrial point of view, consists of retanning with mixtures of synthetic tannins and chrome, followed by cationic fat-liquoring and dyeing. This process has been tested for more than three yeaf in many Italian tanneries and the leathers are of a very high quality. It is possible, by varying the quantities of the products and their ratios, to obtain a series of articles characterized by softness, roundness and feel.
Full grain and buffed upholstery leather has been made using normal drying and wet toggling systems. Shoe and garment leather with extraordinary softness and roundness and low specific gravity has been obtained. This work outlines application of cationic fat-liquoring in leather processing, and examines the reactivity of leather as a function of the acidity of the bath and also of the different types of retans used. The fat content of the leather is compared to the exhaustion of the bath as influenced by the various retans and acidity, and is related to the water absorbancy of the finished leather. The characteristics of the leather obtained from this system compare well with those of the best commercial system. |
| Note de contenu : |
- Proposed process
- Table 1 : residual ft in exhausted fat-liquored baths
- Table 2 : Water absorption by exprimental leathers as measured by the penetratometer
- Table 3 : Water absorption by experimental leathers as measured by the Kubelka apparatus |
| En ligne : |
https://drive.google.com/file/d/17zinxz02UHMfcGAMgD8gWnwCzk9noyRT/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41557 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXIX (Année 1984) . - p. 351-357
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