Efficient and eco-friendly beamhouse chemicals / Franck Diaz in LEATHER INTERNATIONAL, Vol. 213, N° 4811 (06/2011)  

[article]  inLEATHER INTERNATIONAL > Vol. 213, N° 4811 (06/2011) . - p. 22-24 Titre : Efficient and eco-friendly beamhouse chemicals Type de document : texte imprimé Auteurs : Franck Diaz, Auteur ; Bruce Fecteau, Auteur Année de publication : 2011 Article en page(s) : p. 22-24 Langues : Anglais (eng) Catégories : Travail de rivière (cuir) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Experienced tanners know that the quality of leather is mainly determined in the early stages of the process, what is commonly known as the 'beamhouse process'. During this process the main target is to 'purify' the collagenic structure as much as possible by removing undesirable by products in order to start the tanning (the stage when the pelt is converted to leather) in an optimised condition. Dirt, blood, flesh, fat, non-collagenic protein, elastin and keratin will be removed from the hide. These various materials represent quite a high percentage of the total mass of the hide. The removal of these is an essential process before the hides pass into the wet-end and finishing processes. While the name of Stahl has been associated worldwide with the supply of quality finishing products for many years, it was not until the late 1980s that Stahl became involved in the wet-end. Within the last couple of years? Stahl have extended these activities into the field of the beamhouse, there by providing a complete service to the tannery. Note de contenu : - Soaking - Unhairing/liming - Deliming - Degreasing - Other beamhouse products En ligne : https://drive.google.com/file/d/1np7QY7XAS5ZyGTWXAF3YaxQahOfAY6SF/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15627 [article]

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Low carbon products for the design of innovative leather processes. Part I : Determination of the optimal chemical modification of tara / Anna Bacardit in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 10 (10/2013)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVIII, N° 10 (10/2013) . - p. 386-391 Titre : Low carbon products for the design of innovative leather processes. Part I : Determination of the optimal chemical modification of tara Type de document : texte imprimé Auteurs : Anna Bacardit, Auteur ; Concepcio Casas, Auteur ; Franck Diaz, Auteur ; Rosa M. Cuadros, Auteur ; Lluis Ollé, Auteur Année de publication : 2013 Article en page(s) : p. 386-391 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agents de tannage Extraction (chimie) Tanins végétaux Tannage végétal Tara et constituants C'est un petit arbre épineux avec des gousses plates rouge qui pousse dans les zones sèches du Pérou, Amérique du Sud. Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This study considers the fruit of the tara bush as a sustainable source of tanning agents and proposes alternatives to the mineral salts and vegetable extracts for commercial use. Specifically, in part I of the study various processes of physical and chemical modification were developed in order to obtain a modified tara with a higher percentage of tannins which can therefore improve their tanning capability. Several aqueous extraction processes at different temperatures were developed and optimized in order to decrease the astringency and facilitate the penetration of the tannin molecules through the leather structure. Note de contenu : - MATERIALS AND METHODS : Analytical characterization of tara - Extraction processes of tara - RESULTS AND DISCUSSION : Analytical characterization of tara - Extraction processes of tara - Optimization of the tannin extraction process En ligne : https://drive.google.com/file/d/1ZnVooy5IZaQ8Klw6oJorfD8OQ7pa_FVc/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19461 [article]

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