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Tanned leather. 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. An alternative method ...
Early 20th century currier's knife manufactured by Nicolai Clasen, Hamburg, Germany. A currier is a specialist in the leather-processing trade.After the tanning process, the currier [1] applies techniques of dressing, finishing and colouring to a tanned hide to make it strong, flexible and waterproof. [2]
The hide is cut at right angles to the backbone and the resulting pieces termed a "front" (the forward part) and the "butt". The term cordovan leather applies to the product of both the tanned fronts and tanned butts, but is especially used in connection with the term galoshes, meaning the vamps or boot-fronts cut from the shell of the butt. [4]
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.
In the Oxford English Dictionary, tenné is described as "orange-brown, as a stain used in blazoning", and as a mid-16th-century variant of Old French tané. [1] [2] The origin of both tenné and tawny is the Medieval Latin word tannare, meaning "to tan leather". [4]
Vegetable-tanned leather is tanned using tannins extracted from vegetable matter, such as tree bark prepared in bark mills. It is the oldest known method. It is the oldest known method. It is supple and light brown in color, with the exact shade depending on the mix of materials and the color of the skin.
It is similar to parchment, much lighter in color than leather made by traditional vegetable tanning. Rawhide is more susceptible to water than leather, and it quickly softens and stretches if left wet unless well waterproofed. "Rawhide" laces often sold for boots or baseball gloves are made of normal tanned leather rather than actual rawhide.
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)).