Challenges PU leather to natural leather
Natural leather have excellent natural characteristics are widely used in the production of daily necessities and industrial products, but as the world population grows, the demand for human leather doubled, a limited number of natural leather already can not meet this demand. To solve this problem, a few decades ago scientists began research and development of artificial leather, synthetic leather, in order to compensate for the lack of natural leather. 50 years of research the historical process is leather, synthetic leather natural leather to challenge the process.
Scientists from the research and analysis of chemical composition and structure of natural leather start from nitrocellulose linoleum begin to enter the PVC artificial leather, artificial leather, which is the first generation of products. Scientists on this basis, made a number of improvements and exploration, the first aspect is to improve the substrate, followed by coating resin modified and improved. To the 1970s, synthetic fibers, non-woven acupuncture appears to form a network, bond and other technology into a network, so that the substrate has a lotus-shaped cross-section, hollow fiber, to the porous structure, and in line with the network structure of natural leather requirements; synthetic leather surface was already able to do the fine pore structure of the polyurethane layer, the equivalent of natural grain leather, so that the appearance and internal structure of PU synthetic leather and natural leather gradually close, other physical properties are close to natural leather indicators, and more vivid than the natural color leather; folding its normal temperature reached 100 million or more, cold folding can reach the level of natural leather.
Microfiber PU synthetic leather is the emergence of the third generation of artificial leather. Its three-dimensional structure of the network of non-woven synthetic leather substrate creating a catch-up natural leather conditions. The product combines the newly developed structure having openings PU slurry dipping, the surface layer of the composite processing technology has played a huge surface area of microfiber absorbent and strong role in making ultra-fine grade PU synthetic leather having a bundle of ultrafine the natural leather collagen fibers inherent hygroscopic properties, and thus, whether from the internal microstructure, texture or appearance and physical properties and people wearing comfort, etc., can be comparable with the advanced natural leather. In addition, microfiber synthetic leather in chemical resistance, uniformity of mass, large-scale production and processing adaptability waterproof, mildew degeneration is more than natural leather.
Practice has proved that the excellent performance of synthetic leather is natural leather can not be replaced, from domestic and international market analysis, synthetic leather has largely replaced the inadequate resources of natural leather. Using leather and synthetic leather to make bags, clothes, shoes, vehicles and furniture decoration, has received increased recognition of the market a wide range of applications, the number of large, variety, is the traditional natural leather can not be met.
