Softness during post-tanning
A leather’s softness is one of its most striking features and perhaps the property constituting its prominent initial appeal. Unknown to the purchaser is that this very particular appeal constitutes a delicate balancing act between the various processes and the way each individual step is taken.
For this paper, the focus is on the influence of post-tanning processing. The various influences of the previous steps are too varied to discuss in a general way. Moreover, a lot of crust is made from wetblue of outside origin. Where it comes from and how it was made is not always known and the material available needs to be taken as a given fact.
Retanning and fatliquoring processes need to be developed for the leathers available under consideration of their peculiarities.
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Making leather is no longer the art it once was. Leather makers now have to comply with such a vast amount of legislation and other regulations that the actual process of producing leather has been effectively sidelined.
Evaluation of (Re)tanning Effect of Leather Chemicals in a Model and a Real System
Smit & Zoon is continuously researching sustainable alternatives to leather testing, for the development of new products. Our scientists examine the use of a model to test new products, in order to save large amounts of leather and avoid the disadvantages of inevitable variations and non-standardised wet-end recipes encountered in regular testing on real leather.
The Smit & Zoon company developed new range of Biopol products. These are based on the concept of the circular economy. Circular economy focuses on the utilization of renewable sources, waste streams reutilization or smart utilization of low(no)-value biomass side-streams minimizing product environmental footprint.