Difference between revisions of "Tannins"
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* [[Mimosa]] | * [[Mimosa]] | ||
* [[Olive leather|Olive leaves]] | * [[Olive leather|Olive leaves]] | ||
| − | * [[ | + | * [[Sumac]] |
* [[Tara]] | * [[Tara]] | ||
* [[Quebracho]] | * [[Quebracho]] | ||
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== [[Leather videos|Videos]] about the [[leather production]]== | == [[Leather videos|Videos]] about the [[leather production]]== | ||
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<p align=center> | <p align=center> | ||
''The [[leather production]] in a modern [[tannery]].'' | ''The [[leather production]] in a modern [[tannery]].'' | ||
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''[[Brain tanning]].'' | ''[[Brain tanning]].'' | ||
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''The leather production with [[tannins]] of the oak.'' | ''The leather production with [[tannins]] of the oak.'' | ||
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<p align=center> | <p align=center> | ||
''[[Chamois leather|Chamois leather production in Germany]].'' | ''[[Chamois leather|Chamois leather production in Germany]].'' | ||
Revision as of 20:06, 31 August 2017
Tannins are chemicals used by tanners to prevent the disintegration of the collagen fibres of the leather. These chemicals are absorbed by the hides and skins during the tanning process. They bind to the protein collagen in the skins and prevent the disintegration of the fibres by turning them into leather. Without this, the skins would decompose. A variety of tanning agents are used for tanning but the three main types of tanning are vegetable tanning, which involves the use of plant substances, chromium III and synthetic tanning. Finished leather contains about 8 to 45% of tannins.
Different tanning agents: synthetic tannins, Chrome III, Quebracho (vegetable tannin).
Tannins - Tanning agents
Videos about the leather production
The leather production in a modern tannery.
The leather production with tannins of the oak.
Chamois leather production in Germany.
| Tanning methods |
|---|
| Chrome tanning - Vegetable-tanned leather - Synthetic tanning - Tanning with fats and oils |
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