Application of ultrasound in eco-friendly fatliquoring of leather / Mohamed Abu Sayid Mia in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 3 (03/2024)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIX, N° 3 (03/2024) . - p. 139-144 Titre : Application of ultrasound in eco-friendly fatliquoring of leather Type de document : texte imprimé Auteurs : Mohamed Abu Sayid Mia, Auteur ; Mohammad Nurnabi, Auteur ; Mohamed Zahangir Alam, Auteur Année de publication : 2024 Article en page(s) : p. 139-144 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Propriétés physiques Cuirs et peaux -- Teneur en matières grasses Emulsions Granulométrie Huiles et graisses Produits de nourriture du cuir Ultrasons Viscosité Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This article describes the effect of ultrasound on fatliquoring of leather. Preparations of fatliquor-emulsions as well as fatliquoring of leathers were carried out in presence of ultrasound. Ultrasound aids in reducing the size of fatliquor emulsion and increasing fat content of leather. It was found that the particle size of fatliquor emulsion was reduced by more than 22% and fat contents of leather were increased up to 40% due to using ultrasound. Moreover, smooth penetration and uniform distribution of fat in the processed leathers were observed. Physical properties of both ultrasoundassisted fatliquored leather and conventionally fatliquored leather were also studied in detail. Tensile strength, stitch tearing strength, tongue tearing strength, grain crack load, ball bursting load, Bauman tear strength, color fastness and perspiration of ultrasound assisted fatliquored leather were better compared to that of without ultrasound. Note de contenu : - EXPERIMENTAL : Materials - Experimental set-up - Fatliquoring of leather samples - Measurement of particle size - Measurement of viscosity - Determination of fat content - RESULTS AND DISCUSSION : Effect of sonication time on the particle size - Effect of ultrasound on the viscosity of fatliquor emulsions - Effect of ultrasound on fat content of leather - Physical properties of the fatliquored leathers - Fig. 1 : Structure of sulfited fatliquor component - Table 1 : Physico-chemical properties of leather fatliquored with 5% (w/v) Remsynol ESI emulsion using ultrasound and conventional method - Table 2 : Fastness properties of the fatliquored leather En ligne : https://drive.google.com/file/d/1bTmKIVoKbA-1_v3LAG0hKqGyhEHg7Bi2/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40620 [article]

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Correlation of chrome and fat content with leather strength / E. H. Bitcover in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXIII (Année 1978)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXIII (Année 1978) . - p. 121-125 Titre : Correlation of chrome and fat content with leather strength Type de document : texte imprimé Auteurs : E. H. Bitcover, Auteur ; A. L. Everett, Auteur Année de publication : 1978 Article en page(s) : p. 121-125 Note générale : Bibliogr. Langues : Américain (ame) Catégories : 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. Cuir -- teneur en chrome Cuirs et peaux -- Propriétés physiques Cuirs et peaux -- Teneur en matières grasses Cuirs et peaux de bovins Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In a previous study a variety of physical properties and sorting character-istics of combat boot leathers made from comparable bullhides and steerhides were closely compared. The cattle involved had similar genetic and management backgrounds as well as similar ages and slaughter weights. That study anticipated a possible trend towards raising young bulls for beef because of potential economic advantages. Results of the study indicated that leather from bullhide was significantly stronger by a number of standard tests than leather from steer-hide. Since the leathers had been processed in three different tannery lots, there was latex some question as to whether this had produced differences in chemical composition which could result in differences in physical properties. Note de contenu : - Table 1 : Average chemical composition of crust leathers (percent) - Table 2 : Average physical test results for crust leathers - Table 3 : Correlation of physical test results with chrome and fat content of 39 crust sides En ligne : https://drive.google.com/file/d/1t4ffoRfjm_dOE5pXSaxVgV8bDBGFBZB3/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41148 [article]

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Drum salting hides and skins / G. W. Vivian in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60 (Année 1976)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 60 (Année 1976) . - p. 149-155 Titre : Drum salting hides and skins Type de document : texte imprimé Auteurs : G. W. Vivian, Auteur ; M. B. Rands, Auteur Année de publication : 1976 Article en page(s) : p. 149-155 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse Cuirs et peaux -- Conservation Cuirs et peaux -- Propriétés physiques Cuirs et peaux -- Teneur en matières grasses Cuirs et peaux de veaux Essais (technologie) Evaluation Peaux brutes -- Salage Polymérisation Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : This paper discusses preservation of calfskins and hides by drumming in dry salt. Pack tanning trials are reported that compare leather yield and quality from stack and drum cured hides. To eliminate yield deficiency and distribution of grease in the hair and the flesh, hides should be fleshed prior to drum salting, the temperature should not exceed 25°C during drumming (3h for calfskins ; 6h for hides) and the hides should be adequately spread out after curing. In New Zealand, six large plants use 4 rev/min. drums or mixers for curing hides and calfskins; 30% w/w salt, 0.5% w/w boric acid and 0.25% w/w naphthalene is the mixture used for each load. Note de contenu : - EXPERIMENTAL : Preliminary investigations - MAIN INVESTIGATION : Leather quality and yield from stack and drum cured hides - The effect of temperature during drum curing hides - Table 1 : Analysis of salted calfskins - Table 2 : Rate of curing of calfskins - Table 3 : Weight shrinkage tests - Table 4 : Hide weights at various stages - Table 5 : Hide areas before and after curing - Table 6 : Assessment of leathers before correction - Table 7 : Physical properties of finished leathers - Table 8 : Leather yields - Table 9 : Leather yields for hide types - Table 10 : Leather yields for individual packs - Table 11 : Greasiness of drum cured hides related to curing temperatures - Table 12 : Assessment of grain cleanliness En ligne : https://drive.google.com/file/d/1KH5VZKVknQ87NtbsGl5IHOVEv1h99ix8/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31840 [article]

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Drum salting hides and skins / G. W. Vivian in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60, N° 6 (11-12/1976)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 60, N° 6 (11-12/1976) . - p. 149-155 Titre : Drum salting hides and skins Type de document : texte imprimé Auteurs : G. W. Vivian, Auteur ; M. B. Rands, Auteur Année de publication : 1976 Article en page(s) : p. 149-155 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse Cuirs et peaux -- Conservation Cuirs et peaux -- Propriétés physiques Cuirs et peaux -- Teneur en matières grasses Cuirs et peaux de veaux Essais (technologie) Evaluation Peaux brutes -- Salage Polymérisation Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This paper discusses preservation of calfskins and hides by drumming in dry salt. Pack tanning trials are reported that compare leather yield and quality from stack and drum cured hides. To eliminate yield deficiency and distribution of grease in the hair and the flesh, hides should be fleshed prior to drum salting, the temperature should not exceed 25°C during drumming (3h for calfskins ; 6h for hides) and the hides should be adequately spread out after curing. In New Zealand, six large plants use 4 rev/min. drums or mixers for curing hides and calfskins; 30% w/w salt, 0.5% w/w boric acid and 0.25% w/w naphthalene is the mixture used for each load. Note de contenu : - EXPERIMENTAL : Preliminary investigations - MAIN INVESTIGATION : Leather quality and yield from stack and drum cured hides - The effect of temperature during drum curing hides - Table 1 : Analysis of salted calfskins - Table 2 : Rate of curing of calfskins - Table 3 : Weight shrinkage tests - Table 4 : Hide weights at various stages - Table 5 : Hide areas before and after curing - Table 6 : Assessment of leathers before correction - Table 7 : Physical properties of finished leathers - Table 8 : Leather yields - Table 9 : Leather yields for hide types - Table 10 : Leather yields for individual packs - Table 11 : Greasiness of drum cured hides related to curing temperatures - Table 12 : Assessment of grain cleanliness En ligne : https://drive.google.com/file/d/1KH5VZKVknQ87NtbsGl5IHOVEv1h99ix8/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34112 [article]

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Influence of fatliquoring on flammability of leather / Huang Zan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 4 (07-08/2006)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 4 (07-08/2006) . - p. 155-158 Titre : Influence of fatliquoring on flammability of leather Type de document : texte imprimé Auteurs : Huang Zan, Auteur ; Li Lixin, Auteur ; Wuyong Chen, Auteur ; Haibing Gui, Auteur Année de publication : 2006 Article en page(s) : p. 155-158 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Teneur en matières grasses Cuirs et peaux de porcs Essais de comportement au feu Huiles et graisses -- Propriétés physiques Huiles sulfatées Huiles sulfitées Inflammabilité Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The influences of seven kinds of oils on the flammability of pig chrome leather have been studied. The flammability of the fatliquored leathers was evaluated by the vertical flame test and Oxygen Index Test. The results show that the 7 oils increase the fire resistance of leather. The effect is especially shown by sulphated oils which have a more apparent effect than sulphited oils. The leathers which were fatliquored with sulphited fish oil, sulphated neatsfoot oil and lecithin have a stronger glow resistance than the leathers either not fatliquored or treated with other oils. The results should supply a basis for the preparation of fire-resistant leather. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Methods of test - Preparation of fatliquored leather samples - Determination of fat content in leather - Sampling for oxygen index test and vertical flame test - RESULTS AND DISCUSSION : Physical properties of fatliquors - Fat content of fatliquored leather - Flammability of fatliquored leather - Vertical flame test - Oxygen Index - Table 1 : Retanning process - Table 2 : Fatliquoring process - Table 3 : Properties of fatliquoring agents - Table 4 : Flammability of the leathers fatliquored with different oils - Vertical Flame Test and Oxygen Index En ligne : https://drive.google.com/file/d/1PGJhjcFnHkP0-2CYpqXwIit-bun4AVgb/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39113 [article]

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Les lipides dans les peaux d'ovins / Pierre Bourgeat in TECHNICUIR, N° 2 (02/1976)  

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Study on the dry-cleaning process of mink fur Based on subcritical solvent / Yingxuan Wang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 9 (09/2021)  

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The impact of milling on leather properties and fatliquor distribution / Richard L. Edmonds in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 6 (11-12/2017)  

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