Titre : |
Waterproofing of sole leather |
Type de document : |
texte imprimé |
Auteurs : |
P. L. Muthiah, Auteur ; V. Mohanaradhakrishnan, Auteur |
Année de publication : |
1970 |
Article en page(s) : |
p. 183-201 |
Langues : |
Anglais (eng) |
Catégories : |
Alun Couleur Cuir Décapage Essais (technologie) Humidité -- Absorption:Eau -- Absorption Imperméabilisation Produits de nourriture du cuir Retannage Semelles Traitement chimique
|
Index. décimale : |
675 Technologie du cuir et de la fourrure |
Résumé : |
The continued and increasing competition from synthetic materials in ail branches of leather industry emphasises the importance of investigations concerned with the improvement of water resistance of leather. Literature survey indicates that a wide variety of materials and methods have been used for improving the water resistance of leather. A suitable material for this purpose demands the following qualities : (a) with a minimum quantity of the material considerable increase in water resistance ; (b) uniform effect throughout the thick-ness of the leather, otherwise the effect will be lost in short time ; (c) preservation of the air and water vapour permeability ; (d) retention of the qualities such as : grip, flexibility and colour ; (e) non-attainment of thermoplastic properties, i.e. the leather must be soft and flexible in a cold climate and should not be sticky at high temperature ; (f) the method of application must be simple ; (g) the materials must be easily available in the market in large quantities and must be cheap.
In order to find a suitable waterproofing material for vegetable tanned sole leather, a preliminary study was undertaken using various waterproofing materials and methods, viz. impregnation with different materials, retanning with zirconium, chromium and aluminium salts and basic aluminium sulphate treatment. Preparation of crust vegetable sole leather and the sampling method were the same as described earlier. The well known Kubelka's apparatus was used for determining the water absorption of leathers. |
Note de contenu : |
- Impregnation with different materials
- Retanning with zirconium, chromium and aluminium salts : Studies using basic aluminium sulphate - Studies on the improvements - Neutralisation of colour - Chemical treatments - Field tests
- Results and discussion : Effect of impregnation - Retanning - Studies using basic aluminium sulphate - Effect of oiling before alum treatment - Effect of oiling after alum treatment - Mechanism of waterproofing
- Studies on the improvement of colour
- Field tests
- Table 1 : Effect of waterproofing with various materials
- Table 2 : Effect of retanning and alum dipping
- Table 3 : Effect of stripping
- Table 4 : Effect of re-use of alum liquor
- Table 5 : Effect of oiling
- Table 6 : Colour of the leathers, processed by various methods
- Table 7 : Water absorption of leathers after different treatments |
En ligne : |
https://drive.google.com/file/d/1j4LfXSuut-MMCX_O2ejEjIaa-jVTxilK/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37008 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 54, N° 5 (05/1970) . - p. 183-201