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Tanning, or hide tanning, is the process of treating skins and hides of animals to produce leather. A tannery is the place where the skins are processed. Historically, vegetable based tanning used tannin , an acidic chemical compound derived from the bark of certain trees, in the production of leather.
splitting - the hide is cut into two or more horizontal layers. reliming - the hide is further treated to achieve more "opening up" or more protein removal. deliming - liming and unhairing chemicals are removed from the hide. bating - proteolytic proteins are introduced to the skin to remove further proteins and to assist with softening of the ...
New kinds of tanning chemicals came to use during the Industrial Revolution. Chromium tanning was invented during the 1850s. Patent leather has been manufactured since 1819. Phenol formaldehyde resin came into use during World War II. Fur farming was introduced in the 19th century, and is today the main source of fur clothing.
The hides are spun in a float of chemicals and dyes, mostly consisting of oils distilled from different tree barks and vegetation, to stain the hides to desired color. The longer a hide is spun in the barrel, the more time the dyes and oils have to seep into the cells and fibers of the leather.
A tanner treating leather in Morocco. Bating is a technical term used in the tanning industry to denote leather that has been treated with hen or pigeon manure, similar to puering (see puer) where the leather has been treated with dog excrement, and which treatment, in both cases, was performed on the raw hide prior to tanning in order to render the skins, and the subsequent leather, soft and ...
Leather is a strong, flexible and durable material obtained from the tanning, or chemical treatment, of animal skins and hides to prevent decay. The most common leathers come from cattle , sheep , goats, equine animals, buffalo, pigs and hogs, ostriches, and aquatic animals such as seals and alligators.
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Tanning may refer to: Tanning (leather), treating animal skins to produce leather; Sun tanning, using the sun to darken pale skin Indoor tanning, the use of artificial light in place of the sun; Sunless tanning, application of a stain or dye to the skin (active ingredient in tanning lotion products is dihydroxyacetone (DHA)).
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