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Peau tannée au chrome (le chrome donne une couleur bleue)
Wet-blue (tannage)
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Peau tannée au chrome (le chrome donne une couleur bleue)
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Development of a new leather intermediate : wet-bright with a high dye affinity / Anna Bacardit in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 3 (03/2016)
[article]
Titre : Development of a new leather intermediate : wet-bright with a high dye affinity Type de document : texte imprimé Auteurs : Anna Bacardit, Auteur ; M. Gonzà lez, Auteur ; S. van der Burgh, Auteur ; J. Armengol, Auteur ; Lluis Ollé, Auteur Année de publication : 2016 Article en page(s) : p. 113-122 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Teinture
Cuirs et peaux de bovins
Cuirs et peaux de moutons
Eaux usées -- Analyse
Formulation (Génie chimique)
Tannage minéralTannage dans lequel interviennent différents minéraux. Le plus répandu est le tannage aux sels de chrome, mais aussi à l’aluminium
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)
Wet-bright (tannage)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this work we develop a new tanning process (that we call wet-bright) that produces leather free of chromium, aldehydes, aldehyde precursors and organic solvents. Due to the mineral character of the new system, the leather offers a perfect dyeability and high dye affinity, allowing for very bright colors in all leather applications. The leathers offer a perfect dyeability due to the brilliant whiteness of the wet-bright intermediate. This new system consists of the application of Tanfor T™ system (from Kemira) which is safe for both humans and environment and is not classified as hazardous. In addition, when compared to existing traditional processes, there are economic and environmental advantages resulting from the use of this new system. Note de contenu : - TABLES : 1. Wet-blue tanning formulation - 2. Wet-bright tanning formulation - 3. Wet-end formulation for automotive - 4. Wet-end formulation for upholstery - 5. Wet-end formulation for shoe uppers - 6. Wet-end formulation for bovine garment - 7. Wet-end formulation for ovine garment - 8. Comparison of physical tests - 9. Comparison ofpollution in wastewaters En ligne : https://drive.google.com/file/d/1HS5M6qbBKBXcgUrXlLTuomHLqsx7dfW4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25747
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Code-barres Cote Support Localisation Section Disponibilité 17998 - Périodique Bibliothèque principale Documentaires Disponible Effect of acid swelling and its impact on the properties of cow industrial glove leathers / Murali Sathish in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 6 (06/2023)
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Titre : Effect of acid swelling and its impact on the properties of cow industrial glove leathers Type de document : texte imprimé Auteurs : Murali Sathish, Auteur ; Palanisamy Thanikaivelan, Auteur ; Nayan Sarkar, Auteur ; Rathinam Aravindhan, Auteur ; Jonnalagadda Raghava Rao, Auteur Année de publication : 2023 Article en page(s) : p. 235-244 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acides organiques
Colorimétrie
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuirs et peaux -- Analyse
Cuirs et peaux -- Propriétés organoleptiques
Cuirs et peaux -- Propriétés thermiques
Cuirs et peaux de bovins
Gants
Gonflement (physique)
PicklageLe picklage consiste à faire absorber à la peau en tripe une quantité importante d'acide, en présence de sel neutre (NaCl) pour réprimer le gonflement que provoquerait l'acidité du milieu.
Post-tannage
Stabilité thermique
Tannage au chrome
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The development of commercially successful salt-free chrome tanning technology is the need of global leather sector to reduce the total dissolved solids in wastewater. Though some attempts have been made to develop salt-free chrome tanning technology, drawbacks such as slow diffusion of chromium, unevenness in softness and other organoleptic properties are the major concern. The generation of localized acid swelling might be a reason for the above drawbacks and no scientific literature available for the same. Hence, it is important to analyze the effect of acid swelling and its impact on the diffusion of chromium, ageing characteristics of wet-blue leather and physical properties of crust leather. The results show that the acid swelling delays the diffusion of chromium in tanning process and also enhances the growth marks on wet-blue leather. The ageing study reveals that the wet-blue obtained from acid swollen system dehydrates faster than the conventional salt based chromium tanning system. In addition, the wet-blue leather from acid swollen system is prone to fungal attack. The industrial glove leather obtained from acid swollen system has reduced strength characteristics viz., 15% reduction in tensile strength, 17% reduction in tear strength and 20% reduction in grain crack/bursting strength. Further, the degree of heterogeneity in softness is high for crust leather obtained from acid swollen system and also more looseness with internal emptiness. Color value measurements reveal that the crust leather obtained from the conventional tanning system is lighter in shade than the acid-swollen system. The results will be useful to design commercially viable salt-free or low-salt tanning systems as well as to tackle the inadvertent industrial scenario where the tanners are looking for solutions for accidental acid swelling and subsequent salvage of the leathers for possible recovery and applications. Note de contenu : - INTRODUCTION : Pickling with non-sweeling acid - Pre-treatment with weak organic acid
- MATERIALS AND METHODS : Chromium tanning and post-tanning process - Analysis of thermal stability - Ageing characteristics of wet-blue leather - Microscopic analysis - Physical strength characteristics and organoleptic properties - Color value measurements
- Table 1 : Process recipe for tanning the delimed cow pelts
- Table 2 : Process recipe for the manufacture of cow industrial glove leather from chrome tanned cow wet blue (Thickness: 1.0-1.1 mm)
- Table 3 : Changes in weight of cow pelts and leathers
- Table 4 : Changes in thickness and area of cow pelts and leathers
- Table 5 : Hydrothermal shrinkage temperature at different processing stages
- Table 6 : Physical properties of crust leathers
- Table 7 : Organoleptic properties of crust leathers
- Table 8 : Color value measurement of wet-blue and crust leatherDOI : https://doi.org/10.34314/jalca.v118i6.7657 En ligne : https://drive.google.com/file/d/1oHLiX_RkSCNDjpuZpyhxxvz0C-oPiGFq/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39480
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVIII, N° 6 (06/2023) . - p. 235-244[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24080 - Périodique Bibliothèque principale Documentaires Disponible Effect of fatliquoring on grain and corium quality of leather assessed by ball bursting and tearing tests / Albert M. Manich in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 4 (04/2016)
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Titre : Effect of fatliquoring on grain and corium quality of leather assessed by ball bursting and tearing tests Type de document : texte imprimé Auteurs : Albert M. Manich, Auteur ; J. Barneys, Auteur ; L. Martinez, Auteur ; J. Lloria, Auteur ; Agusti Marsal, Auteur Année de publication : 2016 Article en page(s) : p. 127-140 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Propriétés mécaniques
Déchirure (mécanique)
Essais dynamiques
Huiles et graisses
Produits de nourriture du cuir
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Leather quality depends largely on the physical, mechanical and organoleptic characteristics of the finished leather from which the final articles are manufactured. Tearing strength and ball burst tests are especially relevant for leather goods that will be subjected to significant tearing and bursting stresses during use.
The influence of different fatliquors on tearing and ball burst tests is studied using wet-blue leathers from Ireland as starting material. Leathers were retanned and dyed following a conventional process and then, they were fatliquored with nine different fatliquoring agents provided by Trumpler Española. A 7% of active matter (on shaved weight) was applied. After a final washing, a sample of the treated leathers was kept in "crust" state (without finishing), and the rest received a light finishing process following a conventional recipe.
To estimate differences between sides, the central parts of them were fatliquored with the same combination used as reference (sulphited triglycerides of rapeseed oil/fatty polymer). The characteristic components of the fatliquoring agents used were a) Soy lecithin, b) Sulphited triglycerides of rapeseed oil, c) Acrylic polymer (waterproofing agent), d) Fatty Polymers (sarcosinates), e) Sulphated triglycerides of rapeseed oil, f) Phosphoric Ester, g) C14 Paraffin, h) Sulphonated paraffin, and i) Sulphited fish oil.
Based on the experimental results, treatments with similar effects on tearing and ball burst test behavior were grouped, clustering the fatliquors with similar effects on these characteristics when compared with the results of the non-fatliquored leather. The effect of finishing has also been studied.Note de contenu : - Crack increase in tearing and energy
- Bursting behavior, grain crack and energy
- ObjectivesEn ligne : https://drive.google.com/file/d/1DrXjtrgPwuKzCha7l3x4BBKSRmT45vV8/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25992
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXI, N° 4 (04/2016) . - p. 127-140[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17930 - Périodique Bibliothèque principale Documentaires Disponible Effect of pickling materials on leather quality from a hide surface charge perspective / Tianqi Yang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 7 (07/2022)
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Titre : Effect of pickling materials on leather quality from a hide surface charge perspective Type de document : texte imprimé Auteurs : Tianqi Yang, Auteur ; Yunhang Zeng, Auteur ; Qingyong Sun, Auteur ; Chao Lei, Auteur ; Bi Shi, Auteur Année de publication : 2022 Article en page(s) : p. 279-287 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composés aromatiques
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuirs et peaux -- Propriétés physiques
Pénétration cutanée
PicklageLe picklage consiste à faire absorber à la peau en tripe une quantité importante d'acide, en présence de sel neutre (NaCl) pour réprimer le gonflement que provoquerait l'acidité du milieu.
Sulfoniques, Acides
Tannage au chrome
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Salt-free pickling technology has recently received increased attention because it produces much lower salt pollution than the conventional pickling technology using formic acid, sulfuric acid, and sodium chloride. However, the existing salt-free pickling materials, for instance, aromatic sulfonic acids (ASAs), lead to reduced leather quality and the reason behind this phenomenon is unclear. In this study, we explored how ASAs affect the properties of tanned leather. Results showed that typical ASAs, such as 5-sulfosalicylic acid, 1,5-naphthalenedisulfonic acid, and 2-naphthalenesulfonic acid, penetrated cattle hide more slowly compared with formic and sulfuric acids because of their large molecular weight and strong intermolecular interactions with hide collagen. ASAs decreased the positive charge of the pickled hide via interactions with their sulfonic acid groups, resulting in the increased adsorption rate of chrome tanning agent to the hide surface. Rapid tanning agent adsorption could impede the deep penetration and uniform distribution of the agent in the ASA-pickled hide. Thus, the properties of wet blues and crust leathers pickled with ASAs are inferior to those of wet blue and crust leather pickled using conventional pickling materials. Our results indicate that a strongly positive charge of the pickled hide is vital to obtaining high-quality leather and provide insights into salt-free pickling materials from a hide surface charge perspective. Note de contenu : - EXPERIMENTAL : Materials - Pickling experiments - Analyses of pickling performance - Analyses of chrome tanning performance - Determination of the physical properties of crust leather
- RESULTS AND DISCUSSION : Penetration of various acids into hide - Surface charge properties of hides pickled with various acids - Hydrothermal stability and fiber dispersion of hides pickled with various acids - Effect of pickling materials on chrome tanning performance - Effect of pickling materials on the physical properties of crust leathers
- Table 1 : Pickling and chrome tanning processes
- Table 2 : Pseudo-first-order and pseudo-second-order kinetic parameters for chrome adsorption
- Table 3 : Physical properties of crust leathersDOI : https://doi.org/10.34314/jalca.v117i7.5962 En ligne : https://drive.google.com/file/d/1UhajIthtPvDv2bquUbfxlI9pj2WugNC8/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37820
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 7 (07/2022) . - p. 279-287[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23515 - Périodique Bibliothèque principale Documentaires Disponible Effect of syntan to fatliquor ratio on porosity and mechanical properties of wet-blue leather / Murali Sathish in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 4 (04/2017)
[article]
Titre : Effect of syntan to fatliquor ratio on porosity and mechanical properties of wet-blue leather Type de document : texte imprimé Auteurs : Murali Sathish, Auteur ; T. S. Bhuvansewari, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Nishad Fathima Nishter, Auteur Année de publication : 2017 Article en page(s) : p. 121-127 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Analyse
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de moutons
Morphologie (matériaux)
Porosité
Syntans
Vêtements en cuir
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 668.5 Parfums et cosmétiques Résumé : Different types of leathers with varied end applications can be made from same raw material. Post-tanning is the operation, which imparts the functional properties required for the final leather. The amount of post-tanning auxiliaries such as syntan (S) and fatliquor (F) used in the leather making, make it possible to convert the same animal skin into various leather types. In this work, the sheep wet-blue has been converted into garment (S:F 1:2) and upper (S:F 2:1) leather by varying the S to F ratio. Here, an attempt has been made to study the influence of S to F ratio on the porosity and mechanical properties of garment/upper leather with respect to sheep wet-blue as a control. Thermoporometry results show that the reduction in pore distribution of garment leather with respect to wet-blue leather is about 62.3% and that of upper leather is 83%. Capillary flow porometry results show that the maximum distribution of through pore throat diameter of upper leather is found to be shifted towards 0.1-0.2 µm from 0.3-0.5 µm (wet-blue leather), whereas in the case of garment leather pores are uniformly distributed in the range of 0.1-0.5 µm. The influence of post-tanning auxiliaries on air permeability reduction is higher for upper leather (83%) than garment leather (41%). Morphological analysis using SEM shows that loosely packed arrangement of wet-blue leather becomes cemented fiber structure in case of upper leather and uniform fine fiber splitting has been observed for garment leather. Tensile strength of wet-blue leather is decreased by about 23% when it is converted into upper leather and that of garment leather is increased to about 16%. Note de contenu : - MATERIALS AND METHODS : Sampling for analysis of porosity - Sampling for analysis of mechanical properties - Thermoporometry analysis - Capillary flow porometry analysis - Scanning electron microscopic analysis - Mechanical properties
- RESULTS AND DISCUSSION : Thermoporometry analysis - Capillary flow porometry analysis - Scanning electron microscopic analysisEn ligne : https://drive.google.com/file/d/1Q1bFVx4FC4qMqE5wrJLTGhMdetf-ahHR/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28361
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Code-barres Cote Support Localisation Section Disponibilité 18835 - Périodique Bibliothèque principale Documentaires Disponible Effect of the type of retanning on hygienic properties of crust leathers / Jan Zarlok in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 1 (01-02/2017)
PermalinkEffects of collagen fiber addition on the combustion and thermal stability of natural rubber / Weixing Xu in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)
PermalinkElimination of chromium oxidation for effective chromic oxide detections / M. Hooks in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 12 (12/2015)
PermalinkEnzymatic balting technology for wet blue : I. Characterization of protease activities towards chrome-tanned elastin and collagen fibers / Xu Zhang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 7 (07/2018)
PermalinkEnzymatic bating technology for wet blue : II. The basic properties and application effectiveness of typical acidic proteases / Xu Zhang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 12 (12/2020)
PermalinkEvaluation of antifungal activity of carbonate solvent - Part : 1 / Murali Sathish in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 11 (11/2021)
PermalinkEvaluation of hides, wet blue and leather using airborne ultrasonics / Cheng-Kung Liu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 4 (04/2013)
PermalinkFine hair on american bovine leathers / Luis A. Zugno in INTERNATIONAL LEATHER MAKER (ILM), N° 38 (11-12/2019)
PermalinkFish skin and exotic leathers / Jaya Prakash Alla in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 2 (02/2017)
PermalinkFungal growth on wetblue : methods to measure impact on leather quality / L. Zugno in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 1 (01/2011)
PermalinkFungicides for treating wet blue hides / A. C. Galloway in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 58 (Année 1974)
PermalinkA game of two halves in LEATHER INTERNATIONAL, Vol. 220, N° 4882 (07/2018)
PermalinkGlutaraldehyde retannage - a review and assessment of the properties / Pankaj Kumar Tyagi in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 3 (05-06/2014)
PermalinkHeterologous expression of alkaline metalloproteinases in bacillus subtilis sck6 for eco-friendly enzymatic unhairing of goatskins / Shihao Zhang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 3 (03/2022)
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