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<p align=center> [[bild:LEATHER-DICTIONARY.jpg|300px]] </p> ==Oils, fats and waxes in the [[leather production]]== The use of greases, oils and waxes in the [[leather production|leather production process]] is important. The substances are used in production to influence certain [[leather quality|properties]] ([[Haptic evaluation of leather surfaces|softness]], [[Waterproofing leather|waterproofing]] or appearance). Fats, oils and waxes are main component of [[leather care]] and are sometimes used as substance of the [[Tanning with fats and oils|tanning]] itsefe. ==Fatliquoring (regreasing)== In the [[leather production|tanning process]], the natural fats of the animal are removed from the [[rawhide]] as they are not preserved and become rancid. In order to obtain a [[leather quality|soft and stable]] leather, it must be re-greased. Already at the origins of tanning, leather was therefore re-greased with milk, [[brain tanning|brain]], egg yolk, vegetable oil or fish transe (also called "fish oil"). Fats were also used for fat tanning. A finished [[Pull up leather - Greased leather - Waxed leather - Oiled leather|fat leather]] has a fat content of up to 25%. Fatliquoring refers to the refatting of [[leather]] with water-soluble oils. This can be done in the tanning process or even after [[Washing and dry cleaning leather|dry cleaning]]. Dry cleaning is a cleaning process in a solvent bath which strongly degreases the leather. The fatliquor makes the leather supple and stable and the "starved" look of the degreased leather gets a handsome appearance again. Oils and fats in leather affects the [[leather smell|smell of leather]]. It is only one substance of many substances used when [[Leather production|tanning]] which influences the smell of the finished leather. Fatliquors of good quality do not have an intrusive odor. ==Raw materials for the fatliquoring agents== '''Sea animals oils''': Fish oil '''Land animal oils and fats''': Claw oil, beef tallow, pig fat, bone fat '''Vegetable oils and fats''': Palm oil, sunflower oil, rapeseed oil, soybean oil, coconut fat, palm kernel fat, turkey red oil '''Waxes''': Carnauba wax, montan wax, wool grease '''Synthetic fats''': Paraffin oil, mineral oil, fatty alcohol, fatty acid ester <p align=center> [[bild:Fischoel-01.jpg|250px]] [[bild:Klauenoel-01.jpg|250px]] </p> <p align=center> ''Fish oil'' - ''Claw oil''<br></p> <p>&nbsp;</p> ==Fats in [[leather care]] and [[finish]]== Leather is not only greased and oiled in the [[leather production|production]] to make it supple and soft. Fats and oils are also used as [[leather care]] in order to correct wear (in particular, [[Shoe care|shoe polish]]), or to [[Waterproofing leather|waterproof]] leather, or to preserve old and dry leather by re-greasing and softening. Oils, greases and waxes are also used in the [[finish]]. In case of [[Pull up leather - Greased leather - Waxed leather - Oiled leather|pull up (greased leather - waxed leather - oiled leather)]], these substances are used to achieve certain effects in the surface. [[Pull up leather - Greased leather - Waxed leather - Oiled leather|Pull-up]] usually hase a [[Antique Leather - Vintage Leather#patina|patina optics]] which increases with the time. <p align=center> [[bild:Tasche-Fettleder-01.jpg|250px]] [[bild:Pull-Up-Riemen-02.jpg|250px]] </p> <p align=center> ''[[Pull up leather - Greased leather - Waxed leather - Oiled leather|Pull up leather - Waxed leather]]''<br></p> <p>&nbsp;</p> <werbebanner /> == Additional information == * [[Pull up leather - Greased leather - Waxed leather - Oiled leather]] * [[Leather care]] * [[Shoe care]] * [[Tanning with fats and oils]] == [[Leather videos|Video]] about the [[leather production]]== <p align=center> <flashow>//www.youtube.com/v/zbj1QicTdpI&fs=1&color1=0x660000&color2=0x550000&border=1|width=500|height=281,25</flashow><br></p> <p align=center> ''The [[leather production]] in a modern [[tannery]].'' </p> <center> {| {{Prettytable}} ! bgcolor=#eeeeee | [[Leather production|Process steps in the leather production]] |- | bgcolor=#ffffff align=center | [[storage of leather|storage]] - [[soaking]] - [[Liming - Leather Tanning|liming]] - [[Fleshing - Making of leather|fleshing]] - [[Split leather|splitting]] - [[pickling]] - [[Tanning leather|tanning]] - [[neutralising]] - [[Drying leather|withering]] - [[Leather production#Sorting|sorting]] - [[shaving]] - [[Leather production#Dyeing (through colouring) and fatliquoring|yeing (through colouring) and fatliquoring]] - [[Drying leather|drying]] - [[finish]] - [[softening]] - [[Leather quality|final check]] |} </center> <logoplustext /> [[Kategorie:All Articles]] [[Kategorie:Leather production]]

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