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Study of synergistic effects in retanning / Alois Püntener in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXXI, N° 11 (11/1996)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXXI, N° 11 (11/1996) . - p. 287-296 Titre : Study of synergistic effects in retanning Type de document : texte imprimé Auteurs : Alois Püntener, Auteur Année de publication : 1996 Article en page(s) : p. 287-296 Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Over the las few years syntans have dramatically improved, almost unbeknownst to many in the tanning world. As a matter of fact, a lot of new syntans are more than just another formulation. There is often much research work behind them. The leading traditional research-oriented companies have been particularly active. Their aim was to fulfill new consumer trends toward lighter, better filled and longer-lasting serviceable types of leather articles. All this had to be taken into account, and not overlooking the fact that the tanner is faced with an increasing problem of raw material with more and more quality defects. Therefore, one focus for the recent research work has been to study new and possible synergistic effects in the retanning area. The combination of different syntan types, as well as suitable influences of some specific catalysts, have been evaluated in order to improve the mechanical and physical properties of leather. This paper discusses and illustrates how some well known polymer syntans can be and were improved, especially with regards to speed of penetration and better distribution within the leather. This work was done with the aim of helping to cover natural grain defects and improving serviceability. En ligne : https://drive.google.com/file/d/1b4A7F2OWkFMYALEhJG6g11X1V0xMzLNC/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7781 [article]

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Studies of beamhouse swelling for brine-cured hides given an enzyme soak / Jean J. Tancous in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXXI, N° 11 (11/1996)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXXI, N° 11 (11/1996) . - p.297-307 Titre : Studies of beamhouse swelling for brine-cured hides given an enzyme soak Type de document : texte imprimé Auteurs : Jean J. Tancous, Auteur ; R. J. Harvey, Auteur ; Bruce W. Buehrig, Auteur ; L. S. Hermann, Auteur Année de publication : 1996 Article en page(s) : p.297-307 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Brine-cured hides, fleshed at packing plants, were given an enzyme soak and a reduced-sulfide hair brun, using a process studied earlier. Swelling, measured after relime for whole hides, showed that lighter-weight hides swelled more than did heavier-weight hides. Results of swelling studies for small shoulder samples cut from the brine-cured hides showed there were a few hides other than lighter-weight hides that had a considerable amount of swelling.Bull hides swelled more than did steer and heifer hides in cases where hides had the same brine-cured weight. White weight gains, if used for calculing chemical weights or for estimating tannery yields, could be in error because of these variations in amounts of swelling of hides. En ligne : https://drive.google.com/file/d/11Tydi_sTY3J9RPbrv8csDYHn7hJC3HZK/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7782 [article]

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