PL22376B1 - A method of improving the softness and stretchability of tanned leathers. - Google Patents
A method of improving the softness and stretchability of tanned leathers. Download PDFInfo
- Publication number
- PL22376B1 PL22376B1 PL22376A PL2237634A PL22376B1 PL 22376 B1 PL22376 B1 PL 22376B1 PL 22376 A PL22376 A PL 22376A PL 2237634 A PL2237634 A PL 2237634A PL 22376 B1 PL22376 B1 PL 22376B1
- Authority
- PL
- Poland
- Prior art keywords
- softness
- improving
- stretchability
- tanned
- tanned leathers
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 6
- 239000010985 leather Substances 0.000 claims description 6
- 239000005018 casein Substances 0.000 claims description 4
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 claims description 4
- 235000021240 caseins Nutrition 0.000 claims description 4
- 239000001828 Gelatine Substances 0.000 claims description 2
- 235000011180 diphosphates Nutrition 0.000 claims description 2
- 239000003995 emulsifying agent Substances 0.000 claims description 2
- 229920000159 gelatin Polymers 0.000 claims description 2
- 235000019322 gelatine Nutrition 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 235000018102 proteins Nutrition 0.000 claims description 2
- 102000004169 proteins and genes Human genes 0.000 claims description 2
- 108090000623 proteins and genes Proteins 0.000 claims description 2
- 239000001397 quillaja saponaria molina bark Substances 0.000 claims 1
- 229930182490 saponin Natural products 0.000 claims 1
- 150000007949 saponins Chemical class 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical class OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 241000207199 Citrus Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 241000208822 Lactuca Species 0.000 description 1
- 235000003228 Lactuca sativa Nutrition 0.000 description 1
- 210000000577 adipose tissue Anatomy 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 235000020971 citrus fruits Nutrition 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 229940048084 pyrophosphate Drugs 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Skóre zwierzeca nalezy, jak wiadomo, przed garbowaniem poddac obróbce wstep¬ ne jK w celu usuniecia wlosia oraz tkanki tluszczowej od strony mizdry. Po wapno¬ waniu i odwlosieniu, czyli usunieciu wlo¬ sia, skóra jest silnie napeczniala („nabra¬ na, pelna") i zawiera jeszcze wewnatrz resztki wapna. Skóra, garbowana w takim stanie (golym), daje licha skóre. Przez bajcowanie np. przefermentowanemi otre¬ bami, srutem, ekskrementami lub czyste- mi enzymami zmniejsza sie napecznienie, dzieki usunieciu wapna; skóra rozluznia sie tak, iz pozostale wewnatrz skóry za¬ nieczyszczenia mozna z latwoscia usunac droga mechaniczna. Ponadto otrzymuje skóra ,,gola" korzystna w procesie gar¬ bowania powierzchnie, co mozna poznac po stopniu sliskosci. Miekkosc oraz giet¬ kosc skóry wygarbowanej zalezy zarówno od stopnia wapnowania, jak i w duzej mie¬ rze od stopnia nastepnego odwapnowania i usuniecia zanieczyszczen.Obecnie stwierdzono, iz srodki piora¬ ce i emulgujace, otrzymane wedlug pa¬ tentu Nr. 7246 z soli kwasu pyrofosforowe- go i kleju, zelatyny, cial bialkowych, sa¬ poniny, kazeiny i t. d. nadaja sie dosko¬ nale do wstepnego traktowania skóry bia¬ lej przed garbowaniem, w celu uzyskania bardzo miekkich i elastycznych skór. Dzie¬ ki traktowaniu skór wspomnianym sposo¬ bem przed bajcowaniem albo po bajcowa¬ niu, otrzymuje sie skóry znacznie miek-sze i elastyczniej sze, niz przy znanych do¬ tychczas sposobach. Sposób wedlug wy¬ nalazku niniejszego moze równiez zastapic dotychczas stosowane bajcowanie (od- wapnowanie skór). Czas trwania traktowa¬ nia oraz stezenie kapieli zalezy od zada¬ nego efektu. Ponizszy przyklad objasnia blizej, jak nalezy stosowac wynalazek w praktyce.Przyklad. Skóry, przygotowane zna¬ nym sposobem w warsztacie mokrym przez wapnowanie i bajcowanie (odwapnowa¬ nie), wklada sie do cytroków (haspli) al¬ bo bebnów z woda o temperaturze 35 — 40°C i traktuje w ciagu 1 — 1V2 godziny z dodatkiem 1 do 1,5% mieszaniny, skla¬ dajacej sie z 2 czesci zobojetnionego py- rofosforanu sodu i 1 czesci kazeiny. Na¬ stepnie skóry plócze sie i garbuje znanym sposobem. Ilosc dodawanej mieszaniny pyrofosforanu i kazeiny zalezy od gatun¬ ku skór; im wiecej zawieraja one tluszczu, tern wiecej nalezy uzyc powyzszej mie¬ szaniny. PLAs is well known, animal skins must be pretreated with JK to remove the hair and fatty tissue from the flesh side. After liming and dehairing, that is, removing the hair, the skin is strongly swollen ("full, full") and still contains some lime residues inside. Leather, tanned in this state (naked), gives poor skin. Due to the removal of lime, the swelling is reduced with fermented bran, meal, excrement or pure enzymes; the skin loosens so that the impurities remaining inside the skin can be easily removed by mechanical means. the process of tanning surfaces, which can be recognized by the degree of slipperiness. The softness and flexibility of tanned leather depend both on the degree of liming and, to a large extent, on the degree of subsequent decalcification and removal of impurities. It has now been found that detergents and emulsifiers obtained according to patent No. 7246 made of pyrophosphoric acid salt and glue, gelatine, protein bodies, lettuce, casein, etc., are perfect for pretreatment of white leather before tanning to obtain very soft and supple leather. By treating the skins with the aforementioned method before or after the feasting, the skins are obtained much softer and more elastic than the methods known to date. The method according to the present invention can also replace the hitherto used liming (liming hides). The duration of the treatment and the concentration of the bath depend on the desired effect. The following example explains in more detail how to put the invention into practice. The skins, prepared in a known manner in a wet workshop, by liming and calcination (decalcification), are put into citrus (haspli) or drums with water at a temperature of 35 - 40 ° C and treated for 1 - 1 to 2 hours with the addition of 1 to 1.5% of a mixture consisting of 2 parts of neutralized sodium pyrophosphate and 1 part of casein. The hides are tanned and tanned in the usual way. The amount of the mixture of pyrophosphate and casein to be added depends on the type of leather; the more they contain fat, the more you should use the above mixture. PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL22376B1 true PL22376B1 (en) | 1935-12-31 |
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