Liming - Leather Tanning

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Liming is one of the main steps carried out during leather production in the tannery. The main purpose of liming is to separate the hair from the hides. Leather is used both with hair (for furs) and without hair. Most of the leather is de-haired in the tannery. Shoes, belts, car and furniture are produced without hairs on the leather.


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Leather, where the hair remains on the leather skin.

 

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Most leather is processed without hair.

 

Tasks of liming

  • Loosening the top skin and hair, so that it can be removed more easily.
  • Loosening of meat and fat residues for removal.
  • Removal of proteins that would affect the leather quality.
  • Removal of fat in the skin.
  • Swelling of the leather fibres.
  • Open the skin structure, so that the fibres loosen and the tannins can be well connected.


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Liming in the drum. - After liming the next working steps are fleshing and splitting.

 

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In the past, liming was done with ashes and water.

 



Videos about the leather production


The leather production in a modern tannery.


Process steps in the leather production
storage - liming - fleshing - splitting - pickling - tanning - neutralising - withering - sorting - shaving - dyeing (through colouring) and fatliquoring - drying - finish - softening - final check


Tanning methods
Chrome tanning - Vegetable-tanned leather - Synthetic tanning - Tanning with fats and oils


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