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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.
The resulting leather is then sold to other craftsmen, who use it to produce Morocco's famed leather goods, such as bags, coats, shoes, and slippers, prized for their high quality. The entire leather production process comprises manual labor only and involves no modern machinery, and has retained methods unchanged since medieval times.
The oldest confirmed leather tanning tools were found in ancient Sumer and date to approximately 5000 BCE. [5] The oldest surviving piece of leather footwear is the Areni-1 shoe that was made in Armenia around 3500 BCE. Another, possibly older, piece of leather was found in Guitarrero Cave in northern Peru, dating to the Archaic period. [2]: 340
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. fatliquoring - fats/oils and waxes are fixed to the leather fibres.
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)).
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 ...