- Tanning leather and hides in Tanneries was an important part of the economy in the Ancient World.
- They were located outside of towns or in poor suburbs of cities because of the powerful smells that they produced. A Tannery has been identified and excavated in Pompeii.
Preparation
- Skinning
- Removal of the animal hide from the carcass.
- Curing
- After skinning, the Hide was either immersed in a salt bath to kill off any remaining bacteria, or dry packed in salt blocks for four weeks to remove excess moisture.
- Soaking
- Liming
- Liming releases the hair, grease, fats and other matter and prepares the collagen
- Unhairing
- Unhairing the loosened material was then done by a metal hand scraper.
- Deliming
- Deliming reduces the acidity of the collagen by soaking in enzymes or dung-water to produce a bacterial fermentation. This softens the hide.
- Pickling
- The acidity of the collagen is then reduced by being treated with salt.
The Main Methods of Tanning
- Vegetable Tanning
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- Produces a leather which is not water resistant, and is liable to rot if allowed to become moist. It could be waterproofed by oiling.
- Tawing or Alum Tanning
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- Produces a type of leather that is water resistant, and could be used in army clothing.
- The leather is soaked in a solution of potash alum and salts.
- Rawhide
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- This was untanned leather with all the hair and flesh removed, then dried out and ‘worked’ into the required shape. It could be waterproofed by oiling.
Applications of Leather
- Leather was sometimes used as an alternative to currency.
- Sandals and Shoes: The Soles of shoes were made from the thickest and toughest leather.
- Clothing
- Belts
- Gloves
- Waterskins
- Handbags
- Boats
- Writing Material, such as Vellum or Parchment
- Strabo wrote that the Phoenicians made leather into water pipes.
Applications by the Roman Army
- Shields
- Horse Harnesses
- Horse Saddles
- Heavy leather coats, for marching and on the northern frontiers.
- Armour
- Quivers
- Scabbards
- Boots
- Sandals
Animal skins used to make Leather
- Cattleskin mainly.
- Sheepskin.
- Pigskin.
- Goatskin was rarely used.
Roman Tannery
- A Tannery was excavated in Pompeii complete with all the Tanning Tools.