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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. An alternative method, developed in the ...
The principal difference between raw hides and tanned hides is that raw hides dry out to form a hard inflexible material that can putrefy when re-wetted (wetted back), while tanned material dries out to a flexible form that does not become putrid when wetted back. A large number of different tanning methods and materials can be used; the choice ...
[1] [2]: 11 Before modern combination tanning, latigo had been combination tanned with alum and gambier. [3] Latigo is usually infused with oils and waxes. Techniques such as hot-stuffing, wet-stuffing, and fat liquoring have been devised to increase the amount of oil and wax the hide can hold. [4]
Many tanning methods and materials exist. The typical process sees tanners load the hides into a drum and immerse them in a tank that contains the tanning "liquor". The hides soak while the drum slowly rotates about its axis, and the tanning liquor slowly penetrates through the full thickness of the hide.
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.
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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Rawhide is a simple hide product, that turns stiff. It was formerly used for binding pieces of wood together. Today it is mostly found in drum skins. Tanning of hides to manufacture leather was invented during the Paleolithic. Parchment for use in writing was introduced during the Bronze Age and later refined into vellum, before paper became ...