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the process of removing oxidized tannins and insoluble materials from the surface layers of leather, in order to prevent crackiness of the grain. bleaching is performed by dipping the leather in a weak alkaline solution to render the tannin readily soluble, dipping in water, neutralizing in weak acid...
the process of removing oxidized tannins and insoluble materials from the surface layers of leather, in order to prevent crackiness of the grain. bleaching is performed by dipping the leather in a weak alkaline solution to render the tannin readily soluble, dipping in water, neutralizing in weak acid...