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675 : Technologie du cuir et de la fourrure |
Ouvrages de la bibliothèque en indexation 675
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The assessment of chromium status of workers exposed to industrial chromium / Rosalind S. Gibson in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXII (Année 1987)
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Titre : The assessment of chromium status of workers exposed to industrial chromium Type de document : texte imprimé Auteurs : Rosalind S. Gibson, Auteur ; Janis A. Randall, Auteur Année de publication : 1987 Article en page(s) : p. 15-21 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The method most commonly used to assess industrial Cr exposure is to calculate a time-weighted average to total Cr and hexavalent Cr in air. Biological monitoring is seldom performed routinely because of the difficulties with the collection and analysis of tissues and fluids for Cr. Urinary Cr and urinary Cr creatinine ratios have been most extensively investigated by researchers as potential biological indices of exposure to hexavalent Cr, and more recently, trivalent Cr. Results indicate that urinary Cr creatinine ratios on spot urine samples collected post shift provide an acute index of industrial Cr exposure. Corresponding values on basal spot urine samples reflect body burden of Cr in both welders and chrome plate workers exposed to Cr III. Data on the use of whole blood, serum, red blood cells or hair are more limited. Recent work suggests that serum Cr levels may also be an index of body burden of Cr for workers exposed to Cr VI and Cr III while red blood cell Cr may be specific to long-term exposure to Cr VI. Hair is a biopsy material which is more easily collected and analyzed for Cr exposure warrants further investigation. En ligne : https://drive.google.com/file/d/1tX6sQQOve_X8ErigKapacQjTLNmTOkl2/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8960
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXII (Année 1987) . - p. 15-21[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 008087 - Périodique Bibliothèque principale Documentaires Disponible The autosplit and the most favorable process stage for splitting hides / Ranier Dorstewicz in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 8 (08/2006)
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Titre : The autosplit and the most favorable process stage for splitting hides Type de document : texte imprimé Auteurs : Ranier Dorstewicz, Auteur Année de publication : 2006 Article en page(s) : p. 287-298 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The task for the author was to develop a new lime splitting system with thickness control for lime splitting comparable to that achieved for splitting after chrome tanning. Additionally, collaboration with Professor Heidemann at the Technical University in Darmstadt was very beneficial; the "Darmstädter Feed-Through System" was developed in the 1970's and 1980's. Our new approach begins when fresh bovine hides are sprayed from the hair side with a 10 % sodium sulphide solution and after approximately 10 minutes the loosened hair mechanically removed. Afterwards, the native underside of the hide is fleshed and split. Because of the painting on the hair side with highly concentrated sodium sulphide, the hide will not swell; the thickness of the grain split is almost identical with the thickness of that split after chrome tanning. As an essential innovation, a plastic belt leads the hide on the flesh side into the machine. A water-film between the underside of the hide and the surface of the belt reduces friction. The pelt is grasped only by the grain side, at first, from a transport roller with a large diameter and is supplied to a gauge roller. Two pneumatic tubes support the hide. This supporting force can be modulated by varying both the position and by the effective pressure of pneumatic bolsters below the plastic belt. Because the transport roller is 13 % greater in diameter toward the outer edges than in the middle, the hide is transported in the edge area at higher speed into the splitting zone. This is an important condition, to counter the tendency to drag the flanks without intervention of the working staff. This opens up the possibility of feeding the lime splitter automatically from a conveyor - therefore the name AUTOSPLIT. Because of the larger diameter of the feeding roller and the wide intensive contact with the grain, the hide is seized immediately. Drift of the hide, caused by the cutting band-knife even when splitting extremely slippery pelts, is eliminated. An automatic cleaning by nozzles spraying high-pressure water combined with reversing of both the transport roller and the gauge roller after every splitting prevents built up of hide fibers, making opening of the machine for cleaning largely unnecessary. This simultaneously increases productivity and quality of splitting. In summary, the AUTOSPLIT accomplishes these objectives: 1) splitting very slippery pelts without being pulled sidewise by the splitting knife; 2) a good splitting and equalizing of thin hides; 3) elimination of the section roller system which eliminates problems with thin flesh splits and accumulation of hide fibres and 4) easy feeding of the limed hides and spreading out the hides without physical strain on the operating team. En ligne : https://drive.google.com/file/d/1pTyUYzcH7fcmjD5E1OmjEto9k7nwXe_Z/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3993
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CI, N° 8 (08/2006) . - p. 287-298[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 005638 - Périodique Bibliothèque principale Documentaires Disponible The behaviour of pieces in machine operations as a function of temperature and moisture content / Richard Daniels in WORLD LEATHER, Vol. 18, N° 8 (12/2005 - 01/2006)
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Titre : The behaviour of pieces in machine operations as a function of temperature and moisture content Type de document : texte imprimé Auteurs : Richard Daniels, Auteur ; Walter Landmann, Auteur Année de publication : 2005 Article en page(s) : p. 36-37 Langues : Anglais (eng) Catégories : Cuirs et peaux -- Effets de l'humidité
Cuirs et peaux -- Effets de la température
Dérayage
Echarnage
Essorage
Mise au vent
Opérations mécaniques
RefendageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In the early mechanical operations much of the focus is on cutting, and for optimum effect the skins must be held flat against the cutting blade or knife. This requires a stretching action for good presentation, which is mainly provided within fleshing and shaving operations by spiral cutting blades on the rotating cylinder. In the splitting operations this is achieved by the helically-grooved gauge roller, and, in part, by the movement of the knife blade, as well as in presentation to the samm/setting operation by the setting cylinder.
Over and above the objective of the operation, stretch is involved at the point of contact between the hide and blade. This action can be considerable, and the physical properties of the skin at that time—especially the ease and degree of extendibility, compression and recovery—strongly affect the outcome of the operation.
Adjustments are made, both to machine settings and presentation, to achieve the best balance of results. But success is a balance between the way force is applied by the machine and received by the skin. It is an equal partnership, but however sophisticated the machine or perfect the application, variations still occur.
The following diagrams provide an insight into the behaviour of mechanically-stressed pieces dependent upon skin condition. Over and above inherent skin variations, as hides and skins progress within manufacture the permutations that generate change increase enormously.Note de contenu : - Panel E10/1 : Presentation of hides and skins to operation versus effect : raw to tanned samm/set condition
- Panel E10/2 : Presentation of hides and skins to operation versus effect : splitting ahd shavingEn ligne : https://drive.google.com/file/d/1V_MmIOJ6_GLHbKQvRevicU4XfplK8UYc/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32504
in WORLD LEATHER > Vol. 18, N° 8 (12/2005 - 01/2006) . - p. 36-37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006188 - Périodique Bibliothèque principale Documentaires Disponible The better utilisation of the Buffalo / C. R. Janakiram in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. N° 71 (Année 1987)
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Titre : The better utilisation of the Buffalo Type de document : texte imprimé Auteurs : C. R. Janakiram, Auteur Année de publication : 1987 Article en page(s) : p. 1-6 Langues : Anglais (eng) Catégories : Cuirs et peaux
Cuirs et peaux de bufflesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : An exercise in the assessment of technology and its future is always important in the leather industry. The general decline in the quality and availability of raw hides and skins and the increasing costs of labour and overheads lead continuously to improving processing techniques and applying new chemicals. The same factors lead to making maxium use of the available hides and skins. In this paper the importance of the buffalo is analysed to try to asist with its fuller and better utilisation in India and in other countries.
The buffalo (or Bubalus bubalus to give it its official title) is a domestic animal in India, Indo-China, East Indies, Philippines, Burma and Malaya and has also been introduced in Egypt, Italy and Hungary. In Thailand and the Philippines, there are more buffaloes than cattle and they are considered a major source draught power. In Pakistan, buffalo mils accounts for 70 % of the total milk production. An estimated 117000 tonnes of buffalo meat are produced annually from slaughtered animals in India and regular production of meat and meat products take place in urban centres and rural feeder centres. The present 66 million buffalo population is expected to grow to 75 million by AD2000 and, out of this, at least one-third could be taken for slaughtering each year. India has an annual production of 10 million buffalo hides and skins, amounting to some 46 % of the world total. Major problems exist in the high incidence of grain defects, flaying defects and delays in curing, exaggerated by the fact 80 % of the hides are recovered from dead animals and only 20 % from slaughtered animals.
Raw hides are classified into different categories according to their weight, or size and quality. They are marketed on the basis either of weight ranges of classified hides. The question is whether hides and skins can be more fully utilised for the manufacture of a wider variety of leathers. Experience in India and other countries clearly indicates very good possibilities which merit further investigation and development.Note de contenu : - Structure of buffalo hide.
- Structure of buffalo calfskin.
- El processing.
- Manufacture of chrome tanned buffalo.
- Finishing.En ligne : https://drive.google.com/file/d/1Svg7N8su2AxvI_D1t7rL3OlL09_ueWtf/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9140
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. N° 71 (Année 1987) . - p. 1-6[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007135 - Périodique Bibliothèque principale Documentaires Disponible The binding of TCMTB (busan 30L) to hide powder / W. M. Fowler in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXV (Année 1990)
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Titre : The binding of TCMTB (busan 30L) to hide powder Type de document : texte imprimé Auteurs : W. M. Fowler, Auteur ; A. E. Russel, Auteur Année de publication : 1990 Article en page(s) : p. 243-263 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The uptake of 2-(thiocyanomethylthio)benzothiazole (TCMTB) active ingredient from emulsion dispersion of Busan 30L on both limed and lightly chromed hide powder at treatment temperatures of 10°, 25° and 40°C has been investigated. Fungicide uptake was determined by difference measurements on the float at regular intervals during treatment.
At lower fungicide treatment concentration on both chromed and limed hide powder, binding tended to follow a typical mass-action-type binding isotherm with very little change with temperature between 13 and 40°C. At higher float concentrations on chrome hide powder an inflexion point was apparent beyond which uptakes showed a further marked increase with concentration. This inflexion point signified a change in binding characteristics,but was not as marked on limed hode powder indicating that the chrome present played a major role in promoting the different binding mechanism.
The binding isotherms observed were consistent with mass-action-controlled interactions occuring between collagen or chromed collagen or chromed collagen fibres and dispersed TCMTB in the aqueous emulsion treatments, encompassing the practical lower application range used in production. At higher treatment concentrations, progressive destabilisation of the emulsion occured, leading to surface precipitation of TCMTB/surfactant components onto the hide-powder fibres and a pronounced increase in uptake.
The results of the study provide further insight into the modes of interaction of TCMTB with the hide-powder-collagen matrix and the importance of the emulsion dispersion and its stability in determining uptake of fungicide by leather.En ligne : https://drive.google.com/file/d/1e1u10HVBgUKW-dRPDEDWsbsbxnapo2iS/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8685
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Code-barres Cote Support Localisation Section Disponibilité 008090 - Périodique Bibliothèque principale Documentaires Disponible The biodegradabilities of rape oil-based fatliquors prepared from different methods / Zhaoyang Luo in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CV, N° 4 (04/2010)
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PermalinkThe bioindicator method for assessing safety in use of leathers, Part I : calorimetric measurements of bioindicator response to extracts from leathers / Gabriela Zielinska in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 5 (09-10/2016)
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PermalinkThe bioindicator method for assessing safety in use of leathers, Part II : The study of the response of tetrahymena to leather extracts by using a microscope and the Clark electrode / Gabriela Zielinska in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 6 (11-12/2016)
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PermalinkPermalinkPermalinkThe challenge of european automotive uphostery finishes / F. S. Policki in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 74, N° 4 (07-08/1990)
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PermalinkThe challenge of manufacturing leather dyes today / C. T. Page in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 82, N° 2 (03-04/1998)
PermalinkThe changing role of the UK tannery manager / Raymond Blakey in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 5 (09-10/2012)
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PermalinkThe characterisation and depilation effect of extracellular proteases of streptomyces sp. TYQ1024 / Chufan Cai in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 3 (05-06/2022)
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PermalinkThe characterisation of vertical fibre and high weave structures of Hereford cattle hide / D. E. Peters in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 67 (Année 1983)
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PermalinkThe characteristics of oxidized lactose-metal complexes and their interaction with collagen / Chen Hui in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 5 (09-10/2007)
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PermalinkThe chemistry leather manufacture / John Arthur Wilson / New York [Etats-Unis] : The Chemical Catalog Company (1928)
PermalinkThe chemistry leather manufacture / John Arthur Wilson / New York [Etats-Unis] : The Chemical Catalog Company (1929)
PermalinkThe chemistry leather manufacture / George D. McLaughlin / New York [Etats-Unis] : Reinhold Publishing Company (1945)
PermalinkThe chemistry leather manufacture, volume I / Fred O'Flaherty / New York [Etats-Unis] : Reinhold Publishing Company (1956)
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