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Drum salting hides and skins / G. W. Vivian in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60, N° 6 (11-12/1976)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 60, N° 6 (11-12/1976) . - p. 149-155 Titre : Drum salting hides and skins Type de document : texte imprimé Auteurs : G. W. Vivian, Auteur ; M. B. Rands, Auteur Année de publication : 1976 Article en page(s) : p. 149-155 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse Cuirs et peaux -- Conservation Cuirs et peaux -- Propriétés physiques Cuirs et peaux -- Teneur en matières grasses Cuirs et peaux de veaux Essais (technologie) Evaluation Peaux brutes -- Salage Polymérisation Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This paper discusses preservation of calfskins and hides by drumming in dry salt. Pack tanning trials are reported that compare leather yield and quality from stack and drum cured hides. To eliminate yield deficiency and distribution of grease in the hair and the flesh, hides should be fleshed prior to drum salting, the temperature should not exceed 25°C during drumming (3h for calfskins ; 6h for hides) and the hides should be adequately spread out after curing. In New Zealand, six large plants use 4 rev/min. drums or mixers for curing hides and calfskins; 30% w/w salt, 0.5% w/w boric acid and 0.25% w/w naphthalene is the mixture used for each load. Note de contenu : - EXPERIMENTAL : Preliminary investigations - MAIN INVESTIGATION : Leather quality and yield from stack and drum cured hides - The effect of temperature during drum curing hides - Table 1 : Analysis of salted calfskins - Table 2 : Rate of curing of calfskins - Table 3 : Weight shrinkage tests - Table 4 : Hide weights at various stages - Table 5 : Hide areas before and after curing - Table 6 : Assessment of leathers before correction - Table 7 : Physical properties of finished leathers - Table 8 : Leather yields - Table 9 : Leather yields for hide types - Table 10 : Leather yields for individual packs - Table 11 : Greasiness of drum cured hides related to curing temperatures - Table 12 : Assessment of grain cleanliness En ligne : https://drive.google.com/file/d/1KH5VZKVknQ87NtbsGl5IHOVEv1h99ix8/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34112 [article]

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Colour changes in wet blue leathers / John R. Barlow in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60, N° 6 (11-12/1976)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 60, N° 6 (11-12/1976) . - p. 156-162 Titre : Colour changes in wet blue leathers Type de document : texte imprimé Auteurs : John R. Barlow, Auteur Année de publication : 1976 Article en page(s) : p. 156-162 Langues : Anglais (eng) Catégories : Colorimétrie Wet-blue (tannage) Peau tannée au chrome (le chrome donne une couleur bleue) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Wet-blue leathers were prepared in a factorial experiment, designed to study the effects of varying the type, concentration, basicity, and level of basification of the chromium complex on the initial colour and rate of colour change during storage. None of the variables affected the rate of colour change, over 45 days' storage at 0°C. Between-sample variability of colour remained constant during storage, was slightly reduced by a common rechroming and approximately halved by dyeing. Good correlation was found between colour differences in wet-blue leathers and shade variations in the dyed leathers. Note de contenu : - EXPERIMENTAL : Processing details - Colour measurement - RESULTS : Colour changes En ligne : https://drive.google.com/file/d/15MpYnIBBZEc6dhi4w3cJQB49KXJr8Kce/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34113 [article]

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Modern researches in leather dyeing / Samir Dasgupta in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60, N° 6 (11-12/1976)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 60, N° 6 (11-12/1976) . - p. 163-168 Titre : Modern researches in leather dyeing Type de document : texte imprimé Auteurs : Samir Dasgupta, Auteur Année de publication : 1976 Article en page(s) : p. 163-168 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Teinture Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The colour of the leather is the most important factor for its acceptance to the customer. Leather has other important characteristics such as water vapour permeability which are difficult to demonstrate convincingly to the customer. Recent developments in dyeing have contributed considerably towards producing serviceable leather in anticipation of the changing demand of the customer. Constant efforts should be made in the future to develop dyes with improved fastness properties, in particular dry-cleaning and perspiration fastness. Developments in the manufacturing technique of leather with better hydrothermal resistance would contribute towards improvements in continuous through-put dyeing systems. All these would further improve the competitive position of leather against synthetic materials Note de contenu : - IMPROVEMENTS OF FASTNESS OF DYED LEATHER : Auxiliaries - Newer types of dyes - High temperature dyeing - NEWER TECHNIQUES OF DYEING : Dyeing through graft-polymerisation - Dyeing through tanning - Solvent-aided dyeing - Transfer printing - Continuous and newer processes of dyeing En ligne : https://drive.google.com/file/d/1kWryEkGectco3cQ2M_ifMAJPy8Q3WeR8/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34114 [article]

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