Today pelts are prepared for tanning by dehairing, usually with lime, followed by fleshing and cleaning. After tanning, leather is generally treated with fats to assure pliability. The practice of shaving leather to the required thickness was abandoned early in the 18th cent. Russia leather, originally vegetable-tanned calfskin dressed with birch oil that imparted a characteristic odor and often dyed red with brazilwood, is a term now covering a number of variants. Rawhide is similar to parchment and is untanned.
Leather is much used in bookbinding .
Artificial leather, made since about 1850, was originally a strong fabric coated with a rubber composition or with a synthetic substance such as pyroxylin. Since World War II, materials made from vinyl polymers have far outstripped the earlier artificial leathers in commercial importance. Click here to see documents from Electric Library, a pay service. Listing from Electric Library , a pay service. Copyright 2001 Infonautics Corporation .