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New leather- and rubber-waste composites for use in footwear

from SPE Plastics Research Online

The footwear industry in Europe, and particularly in Portugal, concentrates on producing leather shoes. Attachment of the upper and lower parts of a shoe requires carding and/or roughing of bottom upper and sole materials. This generates leather and sole-material fibers, dust, or small scraps, which represent 5 to 15 percent by weight of the solid waste generated by footwear factories. Disposing of leather waste is expensive because of the increasing taxes associated with land fill and the presence of chromium that may be classified as hazardous waste according to European and Portuguese law. more


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