Leather waste, usually refers to the first ingredient for the references on construction waste. Leather waste variety is more, according to the history can be divided into the leather produce attack dereliction, leather products produced in the onset of cut out excess stock and recycled leather products; According to the leather waste composition and the difficulty of the comprehensive use of points: 1, do not contain chromium leather waste Such as fur, grey leather crafty and tanning wastes, etc., because of the simple component, using simple comparison. 2, the waste containing chromium leather Such as blue wet shaving leather scraps, splitting and circle edge waste, because is rich in chromium salt, use comparison difficult. 3, containing dye leather waste Such as dry cutting of leather and side of waste materials, leather cutting ring, etc., because in addition to rich in chromium salt, also including dyes, fatliquoring agent and retanning agent, such as chemical materials, one of the most difficult to use. The use of leather waste, is an old topic. In 1928, the italians will first of all, the waste containing chromium leather for leather material. But because of chrome damage, using the restraint of must. Current, first using the field is still on its produce non-woven fiber features, do the basal data, such as the artificial leather, or mixed with other fiber composite materials, during which the chromium and didn development using discussion includes: MAO degradation, degradation products of separation and purification, etc., it can be used in the following aspects: biological fermentation and soil conditioner, chemical degradation of preparation of protein polypeptide, etc. 4, meat residue using The material skin after flooding to the meat of the proceeds of the flesh slag is recovered grease can annual production of about 1.4 million tonnes of leather wastes, in together to the environmental pollution, the intervening collagen and chromium trioxide also lost a lot, constitutes the infinity of biomass capital. In leather waste down the large tailings, some are leather material, during which more than 80% of collagen, not only the rich nutrient source of protein and amino acid, is also excellent functional polymer materials together. Because of its unique biological characteristics, leather waste in medicine, food products, functional health food, agriculture and so on more than one category has a wide using prospect. Back and full use of the solid waste and waste leather products not only can provide a lot of new materials industry, reduce damage to the ecological environment, also is helpful for leather industry together for very long time.
Shoe Upper Leather
October 11, 2025
