Long-term hide preservation methods are the following:
- wet salting
These four hide and skin preservation methods are effective for a six-month period with no risk of depreciating the quality of the leather products.
Salt is a biostat which inhibits bacteria growth and activity by reducing the moisture content in raw skins. Various salt preservation methods can be applied. As a general rule, the hides are spread out, coated with salt, and then stacked on top of each other by inserting more salt. The hides must sometimes be re salted in case of long-term storage.
The raw product undergoes only a mechanical transformation by adding a v ery low quantity of E 535 anti-agglomerate expressed in anhydrous (anti-caking) Na4 [Fe (CN) 6] to a 20-30 mg/kg concentration on average.