CS247279B1 - White grain and white flesh leather production method - Google Patents
White grain and white flesh leather production method Download PDFInfo
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- CS247279B1 CS247279B1 CS784A CS784A CS247279B1 CS 247279 B1 CS247279 B1 CS 247279B1 CS 784 A CS784 A CS 784A CS 784 A CS784 A CS 784A CS 247279 B1 CS247279 B1 CS 247279B1
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Abstract
Riešenie sa týká výroby usní s bielym lícom aj bielym rubom spósobom, iktorý spočívá v tom, že usne sa začinia 12,5 až 13 % kamencovej brečky o bazicite 38 až 40° Sch., na holinovú hmotnost po dobu 30 až 40 minut točenia. v kožeiužskom sude a následné dočinia redukovanou brečkou 7 až 8 pere. o bazicite 40 až 42° Sch., na postruhovanú hmotnost po dobu 6 až 7 hodin točenia v kožeiužskom sude a po tomto točení sa usne ponechajú v klude 4 až 5 hodin. Po predúprave sa na usne posobí bieliacimi trieslovinami. Usne vyrobené podl'a vynálezu vyznačujú sa požadovanou bielosťou líca aj rubu, makkosťou, hladkým lícom a spíňajú požiadavky kladené na úžitkovosť usní. Usne vyrobené podlá riešenia sú určené hlavně na výrobu obuvi. Riešenie možno použit v koželužské) výrobě.The solution concerns the production of leather with a white face even the white backside, which rests in that it will fall asleep 12.5 to 13% alum crystals with a basicity of 38 to 40 ° Sch., To tannin weight for 30 to 40 minutes of spinning. in leather and subsequent with a reduced crouch 7 to 8 pen. of 40 to 42 ° C, to the post weight for 6 to 7 hours of spin in the Skin of God and after this spin they are left to rest for 4 to 5 hours. After pretreatment, the leather is bleached tannins. Leather made by of the invention are characterized by the desired whiteness cheeks and backs, macros, smooth cheeks and meet the demands for performance leather. Leather-made solutions are designed mainly for the manufacture of footwear. The solution can be used in tanning production.
Description
Vynález sa týká výroby usní s bielym lícom aj bielym rubom.The invention relates to the production of both white-faced and white-backed leather.
Doteraz používané spůsoby výroby hovadzích usní s bielym lícom aj bielym. rubom sú založené na činění usní s redukovanou brečkou v množstve 14 až 15 % na holinovú hmotnost. Po vyčinení sa na usne působilo bieliacimi trieslovinami napr. Irgatan LV, Bazintan alebo Tanigan v množstve 8 až 10 % postruhovanej hmotnosti. Další známy sposob, ktorý sa využíval je založený na začinení holiny redukovanou brečkou v množstve 10 až 12 % na holinovú hmotnost a dočinením po postruhovaní bieliacimi trieslovinami Irgatan LV, Bazintan alebo Tanigan v množstve 8 až 10 % postruhovanej hmotnosti. Usne vyrábané týmito sposobmi neboli dostatočne biele, s posťahovaným lícom, nerovnoměrného vybielenia, čím sa znížili úžitkové vlastnosti usní.Hitherto used methods of bovine leather production with white cheek and white. Reverse is based on tanning leather with reduced sludge in an amount of 14 to 15% by weight. After tanning, the skin was treated with bleaching tannins e.g. Irgatan LV, Bazintan or Tanigan in an amount of 8 to 10% of the grit weight. Another known method that has been utilized is based on initiation of the clearing by reduced slurry in an amount of 10-12% to the clear weight and after tanning after bleaching with tannins Irgatan LV, Bazintan or Tanigan in an amount of 8-10% of the weighted weight. The leather produced by these processes was not sufficiently white, with the cheek drawn, of uneven whitening, thereby reducing the performance of the leather.
Uvedené nedostatky odstraňuje sposob výroby usní podta vynálezu, ktorý spočívá v tom, že usne sa začinia kamencovou chromitodraselnou brečkou v množstve 12,5 ažThe above-mentioned drawbacks are eliminated by the method of manufacture of leather according to the invention, which consists in that the leather is started with alum chromium-potassium slurry in the amount of
13,5 % o bazicite 38 až 40° Sch., na holinovú hmotnost po dobu 30 až 40 minút točenia v kožetužskom sude a následné dočinia redukovanou brečkou v množstve 7 až 8 % o bazicite 40 až 42° Sch., na postriihovanú hmotnost po dobu 6 až 7 hodin točenia v kožetužskom sude a po tomto točení sa usne ponechajú v klude po dobu 4 až 5 hodin. Po tejto době sa na usne v sude působí bicarbonátom sódnym v množstve 0,2 až 0,3 pere. ,na holinovú hmotnost po dobu 25 až 35 minút. Toto posobenie bícarbonátom sódnym v množstve 0,2 až 0,3 % na holinovú hmotnost sa následné opakuje. Na usne vyčinené pódia vynálezu sa po postruhovaní působí pri praní 0,8 až 1 % kyseliny šťavelov-ej na postruhovanú hmotnost pri teplote 32 až 35 °C po dobu 15 až 25 minút. Potom sa na usne posobí bieliacimi trieslovinami napr. Irgatan LV, Bazintan alebo Tanigan v množstve 3 až 4 % na postruhovanú hmotnost pri teplote 33 až 35 °C po dobu 15 až 25 minút.13.5% with a basicity of 38 to 40 ° Sch., To a holin mass for 30 to 40 minutes of spinning in a tannerian barrel, and subsequently to a reduced slurry of 7 to 8% with a basicity of 40 to 42 ° Sch. for a period of 6 to 7 hours of spinning in a tannerian barrel and after this spinning, the leather is left to rest for 4 to 5 hours. After this time, the leather in the barrel is treated with sodium bicarbonate in an amount of 0.2 to 0.3 launders. , to the holin weight for 25 to 35 minutes. This treatment with sodium bicarbonate in an amount of 0.2 to 0.3% per holin weight is then repeated. The tanned leather according to the invention is treated after washing with 0.8 to 1% oxalic acid per wash weight at 32 to 35 ° C for 15 to 25 minutes. Then it is impregnated on the leather with bleaching tannins e.g. Irgatan LV, Bazintan or Tanigan in an amount of 3 to 4% by weight per tensile weight at 33 to 35 ° C for 15 to 25 minutes.
Neutralizáicie sa prevádza mravenčanom sčdnym v množstve 1,5 až 1,8 % na postruhovanú hmotnost, bícarbonátom sódnym v množstve 1 až 1,2 % ,na postruhovanú hmotnost po dobu 20 až 30 minút na pH 6,8.The neutralization is converted with copper formate in an amount of 1.5-1.8% to the grit weight, sodium bicarbonate in an amount of 1 to 1.2% to the grit weight for 20 to 30 minutes to a pH of 6.8.
Technický účintík sa prejaví tým, že spbsobom podta vynálezu sa usne začinia v celej hrúbke do- bielej farby a táto sa nezmění ani po následnom dočiňovaní redukovanou brečkou. Okrem toho usne vyrobené týmto sposobom sa vyznačujú makkosťou, hladkosťou líca a spíňajú všetky požiadavky kladené na úžitkovosť usní.The technical effect is manifested by the fact that, according to the invention, the leather is made up to the full thickness of the white color and this does not change even after the subsequent tanning with a reduced slurry. In addition, the leather produced in this manner is characterized by its softness, smoothness of the cheek and meets all the requirements for the performance of the leather.
Sposob podta vynálezu objasňuje nasledovný příklad:The following example illustrates the process of the invention:
Vypiklovaná holina sa začíní kamencovou brečkou chromitodraselnou v množstve 13 % a bazicite 39° Sch., na holinovú hmotnost, po dobu 35 minút točenia v kožetužskom sude a následné sa dočiní redukovanou brečkou v množstve 7,5 % o bazicite 41° Sch., na holinovú hmotnost’, po dobu 6,5 hodin točenia v kožetužskom sude a po- tomto točení sa usne ponechajú v klude 4,5 hodiny. Po tejto době sa na usne v sude posobí biciarbonátom sódinym v množstve 0,25 % na holinovú hmotnost po dobu 30 minút. Toto pQsoíbetmie bicarbonátom sódnym v. množstve 0,25 % na hoiliinovú hmotnost sa následné opakuje.Beginning with a chromium-potassium alum slurry of 13% and a basicity of 39 ° Sch., To the holin weight, for 35 minutes of spinning in a tannerian barrel, the trimmed clearing is achieved with a reduced 7.5% slurry of 41 ° Sch. for 6.5 hours of spinning in a tannerian barrel and after this spinning, the leather is left to rest for 4.5 hours. After this time, 0.25% by weight of sodium bicarbonate is stowed on the leather in the barrel for 30 minutes. This may be sodium bicarbonate in water. the amount of 0.25% per hiline weight is then repeated.
Na vyčinené usne sa po postruhovaní působí pri praní kyselinou šťavelovou v množstve 0,9 % na postruhovanú hmotnost pri teplote 33 °C po- dobu 20 min. Potom sa na usne posobí bieliacimi trieslovinami napr. Irgatan LV, Bazintan alebo- Tanigan v zníženom množstve 3,5 % na postruhovanú hmotnost pri teplote 34 °C po dobu 20 minút. Neutralizácia sa prevádza mravenčanom sódinym v množstve 1,6 % nta. postru;hiov-ainú hmotnost, biciarbonátom sódnym v množstve 1,1 % na postruhovanú hmotnost’ po dobu 25 min. na pH 6,8.The tanned leather is sprayed with oxalic acid in an amount of 0.9% after spraying, at a temperature of 33 ° C for 20 min. Then it is impregnated on the leather with bleaching tannins e.g. Irgatan LV, Bazintan or Tanigan in a reduced amount of 3.5% per tensile weight at 34 ° C for 20 minutes. Neutralization is carried out with sodium formate at 1.6% nta. hi weight, with sodium biciarbonate in an amount of 1.1% per tensile weight for 25 min. to pH 6.8.
Uvedeným postupom v daných pomeroch sa docieli useň požadovanej kvality (Ká-The procedure in given proportions achieves leather of the required quality (
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CS784A CS247279B1 (en) | 1984-01-02 | 1984-01-02 | White grain and white flesh leather production method |
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CS784A CS247279B1 (en) | 1984-01-02 | 1984-01-02 | White grain and white flesh leather production method |
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