| Titre : |
Enzyme unhairing of pigskins |
| Type de document : |
texte imprimé |
| Auteurs : |
W. Jonczyk, Auteur ; K. Studniarksi, Auteur |
| Année de publication : |
1988 |
| Article en page(s) : |
p. 83-88 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
In reports published in the seventies, we demonstrated the capacity of pancreatic enzyme preparation with high proteolytic activity for unhairing pigskins. The preparation from carefully subdivided cow or pig pancreas was stabilised with boric acid and acetone. The tests carried out, on a commercial scale, on several dozen tons of pigskins confirmed the results obtained in a laboratory on nubuck, suede, lining and gloving leathers. The quality of the leathers obtained was close to that of skins unhaired by means of sodium sulphide. However, the mechanical damage observed on the raw material was more noticeable. The main advantage of the production technology developed was the elimination of sodium sulphide and the better yield of bristles by comparison with the mechanical skin shearing method used at present. The above mentioned enzyme preparation is produced in Poland on a limited scale and applied for the bating of skins.
We later developed an improved version of the preparation. Instead of the volatile and highly flammable acetone, organic polyhydroxyl compounds were employed which increased the yield of enzyme per unit weight of raw pancreas and gave a more stable preparation, especially at higher temperatures. As the production of the preparation proved to be simple and cheap, it was possible to make it in tanneries and to utilise it in production. In 1985, the tannery at Debnica Kaszubska began the production of the preparation and its application for unhairing pigskins in continuous production. |
| Note de contenu : |
- Production of pancreatic enzyme preparation in a tannery
- Selection of optimum conditions for enzymatic unhairing : A. Effects of factors investigated concerning the time of unhairing - B. Effects of factors investigated in connection with the level of proetin substances in the enzyme bath after enzyme unhairing - C. Effect of factors investigated concerning evaluation of grain damage of skins unhaired by enzyme treatment - D. Effect of factors investigated with regard to changes in tensile strength and elongation at break - E. Conclusions resulting from laboratory scale enzymeunhairing under optimal conditions.
- Unhairing of pigksins on commercial scale. |
| En ligne : |
https://drive.google.com/file/d/1DUpJ66_uHj5gu1JkwLmbpVU4k_ply9Ex/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9097 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 72 (Année 1988) . - p. 83-88
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