| Titre : |
Quality enhancement of low grade wet blue leathers : up-grading of thin substance in the wet end process |
| Type de document : |
texte imprimé |
| Auteurs : |
K. Gowthaman, Auteur ; S. Vikram, Auteur ; N. N. Fathima, Auteur ; Jonnalagadda Raghava Rao, Auteur |
| Année de publication : |
2012 |
| Article en page(s) : |
p. 292-301 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Propriétés organoleptiques
Qualité -- Contrôle
Tannage
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Various factors control the quality of the raw materials (hides/skins) used for leather processing. Leathers made from such varied quality of raw materials also have very varied grading. Leathers of higher grades are processed conventionally and finished to the desired effect and the required end product. However, processing and manufacturing of lower grade leathers and improving their properties to make them more useful for high quality products is a big challenge for the leather industry. Conventional up-grading of low quality leathers is brought about by surface modifications. However, such surface modifications significantly affect the natural look of the leathers and hence find use in products applications of low value. This study attempted to improve the grade of the leathers by suitably modifying the post tanning operations without affecting the natural feel of the leathers. One of the major defects, thin substance, has been selected for up-grading. The post tanning auxiliaries have been selected so as to enhance the substance of the leather. Different types of leathers (upper, glove and lining) were made from thin substance raw material. The physical strength properties of these leathers match that of the conventionally processed leathers. The organoleptic properties of the leathers made in this study are also on par with that of the conventional leathers. The cost of chemicals can be easily offset with the additional value realized by following this process of up-grading. |
| Note de contenu : |
- EXPERIMENTAL : Post tanning operations - Physical testing of leather samples - Evaluation of organoleptic properties - Wet and dry rub fastness - Scanning electron microscopic analysis
- RESULTS AND DISCUSSION : Syntans - Fatliquors - Up-grading in thin substance - Physical strenght characteristics, organoleptic properties and rub fastness measurements
- TABLE I : Process recipe for upper leather from wet blue this substance
- TABLE II : Process recipe for lining leather from wet blue thin substance
- TABLE III : Process recipe for glove leather from wet blue thin substance
- TABLE IV : Comparison of post tanning chemicals for conventional and experimental upper leathers from wet blue thin substance
- TABLE V : Comparison of post tanning chemicals for conventional and experimental lining leathers from this substance
- TABLE VI : Comparison of post tanning chemicals used for conventional and experimental glove leathers from wet blue thin substance
- TABLE VII : Up-grading achieved for different types of leathers from wet blue thin substance
- TABLE VIII : Physical strength characteristics of various leathers made from wet blue thin substance
- TABLE IX : Rub fastness characteristics of various leathers made from wet blue thin substance |
| En ligne : |
https://drive.google.com/file/d/15fJ2XqIbS4KAmKqlT25tLn-FTj0ZMQJR/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16060 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVII, N° 9 (09/2012) . - p. 292-301
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Quality enhancement of low grade wet blue leathers : up-grading of thin substance in the wet end process in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 9 (09/2012)
