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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.
Chromium tanning is the most popular tanning method as 90% of all leather in the world is processed this way. [13] Alligator hide is also tanned using the Chromium process. [14] A reason many tanneries choose to use chromium is due to the final leather product being more durable and stretchy, ideal for leather accessories and garments.
splitting - the leather is split into one or more horizontal layers. shaving - the leather is thinned using a machine which cuts leather fibres off. neutralisation - the pH of the leather is adjusted to a value between 4.5 and 6.5. retanning - additional tanning agents are added to impart properties. dyeing - the leather is coloured.
The words "tannin", "tanning", "tan," and "tawny" are derived from the Medieval Latin tannare, "to convert into leather." Bark mills are horse- or oxen-driven or water-powered edge mills [2] and were used in earlier times to shred the tanbark to derive tannins for the leather industry. A "barker" was a person who stripped bark from trees to ...
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 ...
Buckskin is the soft, pliable, porous preserved hide of an animal – usually deer – tanned in the same way as deerskin clothing worn by Native Americans. Some leather sold as "buckskin" may now be sheepskin tanned with modern chromate tanning chemicals and dyed to resemble real buckskin.
A tanning agent is used for: Leather tanning, the process of treating skins and hides of animals to produce leather; Sunless tanning, the effect of a suntan without the Sun; Tanning activator, chemicals that increase the effect of UV-radiation on human skin
Once a cow has been killed, the skin is removed. It is then selected in the raw state, at the very first moment when it is salted. It is organized by size and color. In the tannery, a traditional hair on hide tanning method is employed to ensure that the hide is soft, and less susceptible to odour and moulting. It ensures that the cowhide will ...