Principles
In modern day retanning system aiming to obtain fine grain, soft and full handle stet ( let it stand) more or less the same principle as adopted. Retanning s a subsequent treatment with the most different tanning agents following the main tanning process in order to give the leather special, optimum properties for use. Due to the great variety off retanning agents available on the world market any desired character of the leather can be achieve for practically all sorts off leather by the process f retanning.
Objectives of Retanning
- The retannage of chrome leather improves its quality by filling the looser and softer parts and giving a tight grain n the shanks and belly portions, better feel, fullness and handle in the finished leather thereby increasing its cutting value.
- The retannage of chrome leather may be carried out with vegetable tanning materials, synthetic tannins, mineral tanning materials and resin tannin, either alone or i various combinations.
- All these retanning agents have their own characteristics effects on finished leather.
- However, whatever retanning agents are used, the objective should be to retain the chrome leather character of the finished leather as much as possible.
The most important retanning methods
1. chrome tanned leathers
2. Vegetable/ Synthetically tanned leathers
3. Aluminium tanned leathers
Post a Comment