[article]
| Titre : |
A study of the ageing characteristics of mimosa-Al leather |
| Type de document : |
texte imprimé |
| Auteurs : |
David A. Boast, Auteur ; Desmond R. Cooper, Auteur ; S. G. Shuttleworth, Auteur |
| Année de publication : |
1986 |
| Article en page(s) : |
p. 151-154 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
During the past decade a great deal of reserach work has been aimed at developing an alternative process to chrome tannage. The reasons for this search are welle known and will not be dwelt upon, but it has always been considered that such an alternative tannage must produce leather having similar properties to chrome tanned leather, particularly as regards hydrothermal stability. Several avenues have been followed by researchers, but the most promising approach seems to be that of a combination tannage involving vegetable tannins and aluminium salts.
The value of this type of combination tannage has been known for many years and has been employed to produce leather with hydrothermal stability, perspiration resistant leather and more durable bookbinding leather. However, this earlier work was performed without paying much attention to the theoretical side of the process and it was not until Slabbert of the South African Leather Industries Research Institute (LIRI) presented a paper to the Congress of the IULTCS held in Versailles in 1979 that there was an attempt to rationalise the theory of a vegetable/aluminium tannage. Since publication of that initial report, other papers have added to the fund of knowledge pertaining to the mechanism.
As things stand at present, by using the theory coupled with practical tanning processes in which the latest technology is employed, it can be said that a vegetable aluminium tannage which is typified by the Mimosa-Al tannage is established as a viable process. It can be employed to produce a wide range of leathers from firm shoeupper to soft garment in a rational and cost-effective manner. To process has the added attraction that crust stocks may be prepared at a number of stages to allow shipment and sorting, for example, to be carried out without the problem of rehydration which is associated with chrome tanned leather.
It is the object of this paper to report on a characteristic of Mimosa-Al leather which, because of the known properties of vegetable/aluminium tanned leather, was not anticipated to raise problems but which, nevertheless, has been investigated for the sake of throughness and to dispel any doubts on this score. It is well known that, unless certain precautions are taken, chrome tanned leather which is subsequently heavily retanned with vegetable tannins is prone to become weaker in strength after storage under hot/humid conditions and it has been suggested that the same is true of Mimosa-Al leather. LIRI has performed many trials with the Mimosa-Al process over the past years and it has been possible to make a study of the ageing characteristics of leathers produced by this tannage as compared to other combination tannages. |
| En ligne : |
https://drive.google.com/file/d/1G0EQ2I6eQFXxYotuZajInSb3crKjv6eH/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9234 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 70 (Année 1986) . - p. 151-154
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A study of the ageing characteristics of mimosa-Al leather in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 70 (Année 1986)
