Main description

The inner part of the soybean is cut from the lining skins. Leather upholstery is the softest leather material for shoes. Sheep and pig skins are mainly used as raw material for their production. They can be drilled alone with mineral, vegetable or synthetic tannins or in combination. The physics-mechanical parameters of the leather are determined by the type of raw material and the way of their processing. The lining leathers are finished in a natural tanning color, dyed in a drum or finished with various finishes. Three standards have been selected for the study of the sanitary-hygienic indicators of different in origin and processing lining leathers and their suitability for the production of insoles has been discussed.