Dry methods for producing a nonwoven fabric from tanned leather waste

A dry method for manufacturing a non-woven fabric from tanned leather scraps, the dry method comprising:

• providing tanned leather scraps in the form of compact material,
• subjecting the tanned leather scraps to opening in order to tear the compact material into fiber,
• subjecting the torn material to carding, wherein textile fibers are added during carding to obtain a web of mixed fibers, said textile fibers including wool fibers and polyester or polyamide fibers, and
• subjecting the web of mixed fibers to heat treatment in an oven to obtain a wadding, wherein the web of mixed fibers is free of impregnating agents and comprises a leather fiber component composed of tanned leather fibers having a diameter of between 4 μm and 70 μm and a length of between 4 mm and 20 mm, and wherein the leather fiber component is comprised in a weight percentage greater than or equal to 50% of a total weight of the fibers in the web of mixed fibers.