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Chrome vacuum tannage : An eco-friendly process / Wen Huaixing in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 5 (09-10/2007)
[article]
Titre : Chrome vacuum tannage : An eco-friendly process Type de document : texte imprimé Auteurs : Wen Huaixing, Auteur ; Zhang Chuanbo, Auteur ; Ren Hunjun, Auteur ; Zhu Huaijie, Auteur Année de publication : 2007 Article en page(s) : p. 196-200 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Déchets -- Réduction
Tambours (tannage)
Tannage au chrome
Tannage sous videIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In order to ameliorate technological problems such as the pollution due to leather tannage and the long process time, a vacuum mechanism has been developed and is proposed as a tanning method. This article describes the mechanism and characteristics of vacuum tannage and analyzes the major factors affecting the course of vacuum tannage. The results show that, on the premise of increasing the overall quality of leather tannage, the working time is greatly shortened and the discharge of waste liquid is decreased by more than 50 %. Note de contenu : - VACUUM TANNING MECHANISM : Leather de-gasification - Adsorption and de-adsorption on the leather surface and internal fibre surface - Combination between leather/hide and chemicals
- VACUUM CHROME TANNING EXPERIMENTS : Comparison of permeability - Chrome tanning experiment - Repeated use of waste tan liquor
- ANALYSIS OF MAIN FACTORS AFFECTING VACUUM TANNAGE : Vacuum - Temperature - Mechanical function - Tanning agent offer
- STRUCTURE OF THE VACUUM TANNING DRUM
- Table 1 : Chrome tanning technological experiment and resultsEn ligne : https://drive.google.com/file/d/1D6gw0VeNYGg6QEVhUF6GC4xEht8RDY2S/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39012
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 5 (09-10/2007) . - p. 196-200[article]Stimulation of the chrome tannage process by vacuum / V. Tricys in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 2 (03-04/2003)
[article]
Titre : Stimulation of the chrome tannage process by vacuum Type de document : texte imprimé Auteurs : V. Tricys, Auteur ; Kestutis Beleska, Auteur ; Virgilijus Valeika, Auteur Année de publication : 2003 Article en page(s) : p. 78-81 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux
Tannage au chrome
Tannage sous videIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : This paper presents the results of an investigation into the promotion of leather manufacturing by vacuum. The chromium tannage process was chosen as a model and influence of the factors such as thickness of pelt, temperature, concentration of Cr2O3 in the chroming solution and additionally, the use of pressure on the rate of solution penetration and qualitative indexes of leather was investigated.
It was established that the use of 0.01 MPa vacuum reduces the duration of chroming to 3-20 minutes depending on the pelt thickness. An increase of temperature does not noticeably shorten the time of chroming but it has a positive influence on the shrinkage temperature of the leather. An increase in concentration of the chromium compounds in the chroming solution does not result in a large increase of amount of Cr2O3 in the leather.
Comparing the acceleration of the process by either pressure or vacuum proved the use of vacuum to be more effective than the use of pressure.Note de contenu : - Influence of pressure difference on duration of chromium tannage
- Influence of pelt thickness on duration of the chromium tannage
- Influence of temperature on the chroming process
- Table 1 : Chrome content and shrinkage temperature of samples after chroming 'with solution' A – penetration through flesh side first ; B – through grain side firstEn ligne : https://drive.google.com/file/d/18H12t5EvsVbsQweaCvbmIWY_JNG0dTuk/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39803
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 87, N° 2 (03-04/2003) . - p. 78-81[article]