Low salt preservation of australian sheepskins / C. P. Martin in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 1 (01-02/2021)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 105, N° 1 (01-02/2021) . - p. 9-16 Titre : Low salt preservation of australian sheepskins Type de document : texte imprimé Auteurs : C. P. Martin, Auteur Année de publication : 2021 Article en page(s) : p. 9-16 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse Cuirs et peaux -- Conservation Cuirs et peaux de moutons Evaluation Laine de mouton sels -- Réduction Sels de sodium Tannage synthétique Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In a previous paper a Low Salt Preservation (LSP) method of preserving New Zealand and Australian sheepskins was described and compared to the existing High Salt Preservation (HSP) method. The HSP method uses large amounts of sodium chioride plus combinations of biocides which are not registered in REACH regulations. In the previous trial the Australian skins were stacked flat with wool side against pelt side which caused some mildew to develop in the wool. In this trial using LSP, the skins were stacked in the conventional manner by folding down the back bone, flank to flank with the wool side out. The LSP process used 73% less salt than HSP and uses additives widely used in the food and beverage industries. No wool slip was found in the LSP preserved skins compared to 5% wool slip in the HSP skins and no mildewed areas were found in the LSP skins. These results confirm the efficacy of the LSP process. When finished as rugs there was more ‘wool tip colour’ on some LSP skins compared to HSP. If the wool tip is removed by shearing the underlying wool colour is the same for both LSP and HSP. Note de contenu : - OBJECTIVE OF THIS WORK - EXPERIMENTAL PROCEDURES : Bulk trial - Chemical used - Methods of analysis - PROCESSING OF SKINS INTO FINISHED LEATHER : All skins were shipped to Auskin Tannery in China for processing into finished leather - Pieces stored in laboratory oven at various elevated temperatures - Processing of skins using syntan tannages and modified THPS tannage - Progressive shearing down of wool on rug skins - RESULTS AND DISCUSSION : Inspection of the raw skins - Analytical results - Titrations v.0.1 NaOH - Moisture contents - Assessment of bulk skins after finishing as rugs - Assessment of skins after progressive shearing down of the wool - Assessment of sample pieces stored at elevated temperatures in laboratory oven - Table 1 : Chemicals used in experimental process - Table 2 : Comments after inspecting the raw skins - Table 3 : Analytical results for raw skins - Table 4 : Sorting results after finishing skins as rugs - Table 5 : Assessment of wool colour after progressive shearing - Table 6 : Assessment of skins processed by syntan processes (and THPS) En ligne : https://drive.google.com/file/d/1amhRrnyiIshOghZAl9AYuIqqC4DfIj6h/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35312 [article]

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