PU synthetic leather appearance structure and natural leather approaching step by step

Natural leather because it has excellent natural features is widely used to produce daily provisions and industrial products, but with the increase of international personnel, the human demand for leather, a limited number of natural leather has not satisfied the people demand. To deal with this opposition, the scientists beginning decades ago, the research development of artificial leather, leather, in order to make up for the lack of natural leather. More than 50 years of history process before the seminar is to natural leather battle process of artificial leather, leather.


Scientists from the research analyzes the chemical composition of natural leather and arrangement structure start, start from nitrocellulose coating cloth, into the PVC artificial leather, this is the first generation of artificial leather goods. On the basis of this, scientists made many improvements and exploration, the first is base material improvements, followed by coating resin modified and improved. In the 1970 s, into the fiber non-woven needle into network, bonded into a network of technology, make the base material with lotus root section, hollow fibrous, up to the porous structure, and the network structure of natural leather demand; When the composition of the leather surface have been able to do fine celled polyurethane layer structure, the equivalent of natural leather grain, so that the appearance and connotation construction of PU leather and natural leather gradually approached, and other physical properties are near natural leather