Development of the "SIROLIME" unhairing process / R. W. Cranston in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXI (Année 1986)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXI (Année 1986) . - p. 347-355 Titre : Development of the "SIROLIME" unhairing process Type de document : texte imprimé Auteurs : R. W. Cranston, Auteur ; M. H. Davis, Auteur ; J. G. Scroggie, Auteur Année de publication : 1986 Article en page(s) : p. 347-355 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : By using conventional reagents in a novel way, the “SIROLIME” process allows rapid removal of the hair from cattle hide in an essentially fibrous form with consequent major environmental benefits compared with conventional hair-destroying systems. A large number of successful trials, including regular production runs, have been performed with the process in tanneries throughout the world and have shown that, provided the basic principles are followed, the process is commercially feasible, can be adapted to the requirements of a particular tannery and produces leather of improved quality. The process is particularly suitable where the loosened hair can be removed continuously from the processing vessel during the hair-removal stage. The process can be adapted to stock other than cattle hide, recycling of the processing liquors is relatively simple and there are several variations to the basic process to allow even further advantages. En ligne : https://drive.google.com/file/d/17uOH4bW_X6_t2FLhJl6kdAP5XxfMVS0g/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9217 [article]

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Practical considerations on the sirolime process / R. W. Cranston in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 70 (Année 1986)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 70 (Année 1986) . - p. 50-55 Titre : Practical considerations on the sirolime process Type de document : texte imprimé Auteurs : R. W. Cranston, Auteur ; M. H. Davis, Auteur ; J. G. Scroggie, Auteur Année de publication : 1986 Article en page(s) : p. 50-55 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The sulphide-lime system for removing hair from hides still represents the most easily controllable and cost-efficient method available to a tanner despite the enormous amount of research which has been done in attempting to develop an alternative. Its major drawback today, however, is its severe environmental effect and it is this problem which has prompted the search for a non-polluting method. A number of years ago, we adopted the approach that it would be more advantageous to develope a rapid hair-saving process which utilised, essentially, existing tannery equipment rather than an alternative hair destroying system. Ititially, we worked extensively with enzymes but were unable to find any with sufficient specificity to avoid collagen damage. That is not to say, however, that we have excluded the possibility of using enzymes, as developments in biotechnology may still be able to provide an enzyme of sufficient specificity. The enzyme work enabled us to establish some important principles. Any hair-saving process would need to be a two-stage process. In the first stage, almost all of the hair (at least 90 %) is removed by a rapid chemical treatment. The small amount of redestroying stage, the conditions of which can be chosen to give the normal "liming action" on the hide. Finally there should be an efficient method for separating loosened hair from the hides. Experiments with sulphide had been running concurrently with our enzyme work and eventually an approach using sulphide was developed which has become known as the SIROLIME process. En ligne : https://drive.google.com/file/d/1e_O7PlEdffG3lSNq0zhuWcp9q6h9xH5X/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9207 [article]

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Small-scale experimental processing drums for the hide and skin industry / R. W. Cranston in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 66 (Année 1982)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 66 (Année 1982) . - p. 47-49 Titre : Small-scale experimental processing drums for the hide and skin industry Type de document : texte imprimé Auteurs : R. W. Cranston, Auteur Année de publication : 1982 Article en page(s) : p. 47-49 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Tannage -- Appareils et matériels Tags : Tambours  "Petites  peaux"  "Peaux  de  mouton  en  laine"  Tannage Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In the development of new processing techniques for the tanning industry, there is an increasing need for small¬scale experimental processing, in order to determine whether these new methods are suitable for the production of particular types of leather and how these techniques may best be applied. The possibility exists that large-scale experimental processing with a full-size drum may produce a worthless batch of bides or skins. This approach applies equally well to tanneries and research laboratories. With this in mind the CSIRO Hide, Skin and Leather Research Group has developed a range of experimental processing drums suitable for use with small hide pieces, small animal skins, wool-on sheepskins and small hides. Note de contenu : - Fig. 1 : Draining or sampling of liquor from the small scale drum by use of the "rotary T-junction" - Fig. 2 : Large scale, 400-litre "axle" capacity, acrylic drum. Note the small sampling tap, pH electrode, inlet port and heat exchanger incorporated in the recirculation pipeline - Fig. 3 : Connection of a laboratory water bath to the heat exchanger on the small-scale drum - Fig. 4 : Schematic layout for the large-scale drum. Ho water from the mains pressure hot water unit A is circulated by the pump B by way of the solenoid valves C to the heat exchanger D. The degree of heating is controlled by the Honeywell temperature controller E which switches the solenoid values depending on the sensed temperature from the probe J. The drum F has an incorporated spiral scoop G which circulates liquor to the drain valve K and the recirculation pipeline, with optional vent pipe Q, via a rotary sealed joint M. Liquid returns to the drum through the flange seal N, with the reagent liquid addition being made through the inlet port P. Drum temperature is sensed from the remote pickup device H and displayed on the gauge L - Fig. 5 : Schematic diagram of the three-timer system for drum time sequence control. The timers are synchronous process timers with instantaneous and timed contacts En ligne : https://drive.google.com/file/d/1sN9QRzGvu3zCLfQ_Xk-OOKv-MlTyikKJ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34210 [article]

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