China artificial leather synthetic leather net: leather is a general term that includes all related. Skin is raw material without tanning without direct use value, and leather is tanned skin which can be directly processed into garments, footwear and other products. Artificial leather is made of textile material as the base, and the imitation leather products made after coating. In our country, people are accustomed to use PVC resin as the raw material for the production of artificial leather called PVC artificial leather (referred to as artificial leather); PU resin as the raw material for the production of artificial leather called PU artificial leather (referred to as PU leather): PU resin and non-woven fabrics as the raw material for the production of artificial leather called PU synthetic leather (referred to as synthetic leather).
The development of China artificial leather and synthetic leather industry has become an emerging industry with great potential for development, which is highlighted by the following characteristics:
(1) Artificial leather, synthetic leather development is rapid, the market is increasingly broadened
Nowadays, a wide variety of leather products can be seen everywhere in daily life, such as upholstery, sofa fabrics, car interiors, garments, footwear and bags, etc. People tend to think that these products are made of natural leather, but in fact, a considerable share of these leather products is occupied by man-made leather and synthetic leather.
For PU artificial leather, PU synthetic leather, at present, the industry has not been accurately named, but some people are accustomed to the above three kinds of leather collectively referred to as synthetic leather. How to name them? To be unified and standardised to give it a more appropriate name.
Artificial leather, synthetic leather is an important part of the plastics industry, in the national economy is widely used in various industries. Artificial leather, synthetic leather production in the international development history of more than 60 years, China since 1958 began to develop the production of artificial leather, it is the development of China plastics industry in the early industry. In recent years, the development of China artificial leather, synthetic leather industry is not only the growth of production enterprises equipped with production lines, product output growth year after year, varieties and colours increase year after year, and the industry development process has its own industry organizations, there is a considerable cohesion, so that China artificial leather, synthetic leather enterprises, including the related industries together, the development of a considerable strength of the industry.
Following the PVC artificial leather, PU synthetic leather, after more than 30 years of dedicated research and development by scientific and technological experts, has gained breakthrough technological progress as an ideal substitute for natural leather.PU coated on the surface of fabrics first appeared on the market in the 1950s, and by 1964, DuPont in the United States had developed a synthetic leather used as shoe uppers of PU. After the Japanese company established a set of production line with an annual output of 600,000 square metres, after more than 20 years of continuous research and development, PU synthetic leather has grown rapidly in terms of product quality, variety, and output. Its performance is more and more close to the natural leather, some performance even exceeds the natural leather, to the extent that it is hard to distinguish from the natural leather, and it occupies a very important position in the daily life of human beings.
Today, Japan is the largest synthetic leather producer, Kuraray, Teijin, Toray, bell spinning and several other companies daily life in all aspects.
(2) artificial leather, synthetic leather on the challenge of natural leather
Natural leather due to the excellent natural characteristics are widely used in the production of daily necessities and industrial products, but with the growth of the world population, the human demand for leather multiplied, the limited number of natural leather has long been unable to meet the needs of this kind of people. In order to solve this contradiction, scientists began to research and develop artificial leather, synthetic leather, in order to make up for the lack of natural leather. 50 years of research history process is artificial leather, synthetic leather to natural leather challenge process.
Scientists from the research and analysis of the chemical composition of natural leather and the structure of the organisation began, from nitrocellulose lacquer cloth to start, into the PVC artificial leather, which is the first generation of artificial leather products. On this basis, scientists made many improvements and explorations, firstly in terms of the substrate, followed by the modification and improvement of the coating resin. To the 1970s, the synthetic fibre nonwoven fabric appeared needle punched into the net, bonded into the net and other processes, so that the substrate has a coupled section, hollow fibrous, to achieve a porous structure, and in line with the requirements of the natural leather mesh structure; at that time, the synthetic leather surface layer has been able to do the micro-porous structure of the polyurethane layer, which is equivalent to the natural leather of the granular surface, so as to make the appearance of the synthetic leather and the inner structure of the PU leather with the natural leather gradually close to the other physical characteristics are close to the natural leather, and the physical characteristics are close to the natural leather. Other physical characteristics are close to the indicators of natural leather, and the colour is more vivid than natural leather; its normal temperature folding resistance reaches more than 1 million times, and the low temperature folding resistance can also reach the level of natural leather.
The emergence of microfibre PU synthetic leather is the third generation of artificial leather. Its three-dimensional structure network of non-woven fabric creates the conditions for synthetic leather to catch up with natural leather in terms of substrate. The product combines the newly developed processing technology of PU paste impregnation and composite surface layer with open pore structure, which gives play to the huge surface area and strong water absorption of microfibre, making the ultrafine grade PU synthetic leather with the inherent hygroscopic property of natural leather with bundled ultrafine collagen fibre, and thus can be comparable to the high-grade natural leather, no matter from the internal microstructure, or the appearance, texture, and physical properties and people wearing comfort. Therefore, no matter from the internal microstructure, the appearance and texture and physical properties and people wearing comfort and so on, it can be comparable with the high-grade natural leather. In addition, microfibre synthetic leather in chemical resistance, quality uniformity, adaptability to large-scale production and processing, as well as waterproof, mildew resistance and so on more than natural leather.
Practice has proved that the excellent performance of synthetic leather is natural leather can not be replaced, from the domestic and foreign market to analyse, synthetic leather has also been a large number of resources to replace the lack of natural leather. The use of artificial leather and synthetic leather to do bags, clothing, shoes, vehicles and furniture decoration, has been increasingly affirmed by the market, its wide range of applications, the number of large, varieties of traditional natural leather can not meet.
