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Auteur Joaquim Font
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CÃ tedra A -Escola d'Enginyeria Igualada - Igualada - Spain
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Minimisation of volatile organics in a metallic foil patent finish for uppers and leather goods / Lluis Ollé in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 3 (05-06/2009)
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Titre : Minimisation of volatile organics in a metallic foil patent finish for uppers and leather goods Type de document : texte imprimé Auteurs : Lluis Ollé, Auteur ; Anna Bacardit, Auteur ; Joaquim Font, Auteur ; Rosa M. Cuadros, Auteur ; Mira Cobos, Auteur Année de publication : 2009 Article en page(s) : p. 97-102 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In response to pressures of globalization and easy relocation of leather factories to low-cost countries, to environmental legislation and changes in consumer behaviour, the leather industry needs to produce innovative, fashionable and eco-friendly articles. We studied a coating formulation in this work for a metallic foil patent finish which tackles all these issues. In addition, we replaced solvent products by aqueous products in order to reduce the emissions of volatile organic compounds. The finished leathers were transparent, smooth, with a glossy appearance (almost glass-like) and with a metallic effect. The leathers meet the quality requirements for shoe upper and leather goods, and are commercially acceptable. Moreover, there is a 96,08 % reduction of emissions of volatil organic compounds. En ligne : https://drive.google.com/file/d/1R39TZJu7tZzyXIHX6TDDjB_lWLbNA-ym/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5938
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 3 (05-06/2009) . - p. 97-102[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011443 - Périodique Bibliothèque principale Documentaires Disponible Recovery of organic nitrogen from beamhouse wastewater in a hair recovery process / Agusti Marsal in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 5 (09-10/2009)
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Titre : Recovery of organic nitrogen from beamhouse wastewater in a hair recovery process Type de document : texte imprimé Auteurs : Agusti Marsal, Auteur ; Joaquim Font, Auteur ; A. Rius, Auteur ; M. Reyes, Auteur ; Sara Cuadros, Auteur ; E. Bautista, Auteur Année de publication : 2009 Article en page(s) : p. 176-182 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In the leather industry, in addition to the extrinsic contamination attribuable to chemical products not absorbed by the hides, there is intrinsic contamination produced by the hides themselves. from each 100 kgs of raw material, 15 kgs of solubilised protein will end up in wastewater in the early stages of the process of transforming hides into leather. These proteins contain nearly 18% of nitrogen. In this study it is proposed to recover organic nitrogen from the proteins present in the effluents of the beamhouse operations of hides and the subsequent revalorization of the protein fraction obtained.
This work seeks to characterize (the chemical oxigen demand (COD), total nitrogen, ammonium nitrogen, total soluble nitrogen, particulate nitrogen, organic nitrogen and protein) the wastewaters, individually or in groups, of the various beamhouse operations (soaking, unhairing-liming, washing, conditioning, deliming, bating, washing and pickling) with hair recovery.
The studies are presented of the determination of the pH value (adjusted by means of buffers of acetic acid/sodium acetate) at which the greatest precipitate of the protein fraction if produced. In addition, the following tests were performed to characterize these precipitates : determination of the quantitative composition of the main components of the protein fraction (humidity, proteins, free amino acids, fats and other matter soluble in dichloromethane and ash) ; heavy metals content, calcium, magnesium, potassium and sodium and the composition in total amino acids with prior acid hydrolysis of the protein fraction with 6N hydrochloric acid.En ligne : https://drive.google.com/file/d/15jtZl0drv7WDsFm3P8MYIps2ch5NYQcV/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6276
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 5 (09-10/2009) . - p. 176-182[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011654 - Périodique Bibliothèque principale Documentaires Disponible Salinity reduction in the production of nappa skins by using agents with non-swelling capacity in pickling/tanning / Agusti Marsal in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 6 (11-12/2005)
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Titre : Salinity reduction in the production of nappa skins by using agents with non-swelling capacity in pickling/tanning Type de document : texte imprimé Auteurs : Agusti Marsal, Auteur ; A. Rius, Auteur ; J. Cot, Auteur ; J. Lalueza, Auteur ; Ramón Palop, Auteur ; Joaquim Font, Auteur Année de publication : 2005 Article en page(s) : p. 232-236 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir -- teneur en chrome
Cuir nappa
Cuirs et peaux -- Propriétés organoleptiques
Cuirs et peaux -- Propriétés physiques
Cuirs et peaux de moutons
Humidité -- Absorption:Eau -- Absorption
Photostabilité
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
sels -- Réduction
Sels de sodium
Température de retraitIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In earlier papers, we studied the behaviour in the pickling/tanning processes of hides1,2 and sheepskins3,4 of four commercial non-swelling products. The application of these products yielded a significant reduction in salinity. In the case of sheepskins, the best results in terms of non-swelling capacity, shrinkage temperature, conductivity and Chemical Oxygen Demand of the residual baths corresponded to the pickling treatments carried out at a salinity of 2°Bé with a 2% offer of naphtol 3-6 disulphonic acid, or with a 2% offer of p-hydroxydiphenyl sulphonic acid, or with a 4% offer of polyacrylic acid. Note de contenu : - AIM OF THE WORKS
- EXPERIMENTAL PROCEDURES : Starting material. Pickling and tanning operations - Post-tanning process
- RESULTS : Chromium content and shrinkage temperature after
tanning - Organoleptic properties - Physical properties - Water absorption - Light fastness - Concentration of chlorides and other water-soluble substances -
- Table 1 : Processes carried out after bating (offers on delimed weight)
- Table 2 : Recipe for clothing nappa (offers on wet-blue weight)
- Table 3 : Recipe for footwear nappa (offers on wet-blue weight)
- Table 4 : Mean values of physical testing for clothing nappa. Standard deviation in brackets
- Table 5 : Mean values of physical testing for footwear nappa. Standard deviation in brackets
- Table 6 : Mean values of water absorption after 12 hours. Standard deviation in brackets
- Table 7 : Concentration of water-soluble substances in clothing nappa
- Table 8 : Concentration of water-soluble substances in footwear nappaEn ligne : https://drive.google.com/file/d/1SOT5OcUJQ3aU62g_UIWKYAA2p6FwE4HM/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39212
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 6 (11-12/2005) . - p. 232-236[article]A simple test to determine the propensity of a sample of leather to the formation of chromium / Joaquim Font in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 2 (02/2018)
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Titre : A simple test to determine the propensity of a sample of leather to the formation of chromium Type de document : texte imprimé Auteurs : Joaquim Font, Auteur ; Marta Bacardit, Auteur ; Niria Pascual ; Rosa M. Cuadros ; Francina Izquierdo Année de publication : 2018 Article en page(s) : p. 65-71 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse quantitative (chimie)
Colorimétrie
Cuir -- Teneur en chrome hexavalent
Cuirs et peaux -- Analyse
Décoloration
Extraction par solvant
PyrolyseLa pyrolyse est la décomposition ou thermolyse d'un composé organique par la chaleur pour obtenir d'autres produits (gaz et matière) qu'il ne contenait pas. L'opération est réalisée en l'absence d'oxygène ou en atmosphère pauvre en oxygène pour éviter l'oxydation et la combustion (L’opération ne produit donc pas de flamme). Il s'agit du premier stade de transformation thermique après la déshydratation.
Elle permet généralement d'obtenir un solide carboné, une huile et un gaz. Elle débute à un niveau de température relativement bas (à partir de 200 °C) et se poursuit jusqu'à 1 000 °C environ. Selon la température, la proportion des trois composés résultants est différente.Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Since the EU Commission Regulation of chromium(VI) in leather articles, there is a huge demand of analyses and controls in the leather sector for this parameter.
However, for many tanners and leather dealers, the necessary cost to have a laboratory capable to carry out the analyses according to an ISO method is not affordable.
An easy test has been developed to carry out a screening of a leather sample in order to check out its compliance with the Cr(VI) restriction. This test is able to distinguish leathers that contain chromium(VI) or show signs of tendency to develop it, from leathers that even after thermal ageing exposure remain free of it.
The test is based on the scientist principle of the ISO 17075-1 method. Some operations of this Standard have been adapted with the aim of saving costs and simplifying and shortening the workload of the test. The essential criterion of this adaptation has been that the developed test does not lead to false negatives.
The only required devices are a laboratory oven, a balance of 0.01g of resolution, and a shaker. Neither a spectrophotometer nor a colorimeter is necessary.
The method has four main steps. The first one is an ageing process at 80°C during 24 hours. After cooling down for 30 minutes, the sample is extracted for one hour, using an overhead rotatory shaker or a magnetic stirrer. The third step is the discoloration of the extract, to remove the dyes of the colored solution so as to eliminate interferences. Finally, the extract is assessed by visual colorimetry. The workload per sample is about 40 minutes.
So far, more than 300 samples of leather have been tested. The kit performed very well and only gave 5% of false positives. The kit did not commit any false negative.Note de contenu : - MATERIALS AND METHODS : Samples - Reagents and instruments for the LeatherKit_Cr6 method - Instruments for the ISO 17075-2 reference method - Operating procedure for LeatherKit_Cr6 method - Measurement
- RESULTS AND DISCUSSION : Ageing - Cooling down time - Degasification of samples and extration solution - Extraction procedure - Color removal - DeterminationEn ligne : https://drive.google.com/file/d/1-Pc0JEd9a6YcAPhK0_-PJAntrsYBnDj0/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29955
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 2 (02/2018) . - p. 65-71[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19539 - Périodique Bibliothèque principale Documentaires Disponible Study of the effect of temperature, relative humidity and UV radiation on chrome-tanned leather ageing / Anna Bacardit in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 6 (06/2012)
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Titre : Study of the effect of temperature, relative humidity and UV radiation on chrome-tanned leather ageing Type de document : texte imprimé Auteurs : Anna Bacardit, Auteur ; Montse Jorba, Auteur ; Joaquim Font, Auteur Année de publication : 2012 Article en page(s) : p. 179-185 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuir -- Effet du rayonnement ultraviolet
Cuirs et peaux -- Détérioration
Cuirs et peaux -- Effets de l'humidité
Cuirs et peaux -- Effets de la température
Tannage au chromeIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Since leather is strongly affected by three main environmental parameters: temperature, relative humidity and UV radiation, this piece of research focuses on the effect that these three factors have on chrome-tanned leather ageing. Chrome tanned leathers were exposed to weathering effects in a climatic chamber in order to identify the most important variables affecting this weathering process and also to check for any possible interactions. Both a multilevel centralized factorial experimental design and an analysis of variance (ANOVA) were used as statistical tools for estimating the effects of the parameters. Note de contenu : - Effect of the weathering variables on physical and fastness properties of the leather
- Effect of the weathering variables in the modification of the leather composition
- Changes in fibrous structureEn ligne : https://drive.google.com/file/d/1JQiJtykQcD3JHLq9wDi0eIFYbIbzpT3v/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15468
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVII, N° 6 (06/2012) . - p. 179-185[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13991 - Périodique Bibliothèque principale Documentaires Disponible Study of the effect of temperature, relative humidity and UV radiation on wet-white leather ageing / Anna Bacardit in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CV, N° 10 (10/2010)
PermalinkStudy of the qualitative and semi-quantitative analysis of grape seed extract by HPLC / Silvia Sorolla in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 3 (03/2018)
PermalinkWaste water reutilization in the leather industry using membrane technology / J. Roig in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 4 (04/2009)
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