Thursday, July 14, 2016

Artificial Leather Development Process

Artificial leather production in the world more than 60 years of development history , the early 
scientists the chemical composition and structure of natural leather starting from research and 
analysis , the earliest use of leather in 1921 nitrocellulose coated fabrics made of nitrification 
fiber cloth, which is the first generation of artificial leather.
In 1937 Germany led by Professor Bayer research work on the success of the polyurethane
 resin , polyurethane leather and synthetic leather development has laid a good foundation.
 Following the PVC artificial leather ,, pu synthetic leather through science and technology 
experts 30 years of painstaking research and development in 1953, Germany launched the 
first polyurethane leatherette aspects of the patent , as the ideal substitute for natural leather ,
 was a breakthrough technological advances . Japan in 1962 and the introduction of the 
patent from Germany, Japan, the same year Xingguo Chemical Industry Company leather is 
also made of polyurethane . Around 1963, DuPont successfully developed PU synthetic 
leather, its appearance , physical constitution and feeling closer to natural leather , grades for 
corfam. 2 , Japan Kurashiki Rayon Company have also made ​​the trade name of synthetic
 leather clarino . Then Toyo Tire & Rubber Company is also made of polyurethane synthetic 
leather Patra , Teijin 's brother Utrecht also studied successful.

On this basis , scientists have made ​​many improvements and exploration: the first is to 
improve the terms of 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 the reticular structure of natural leather Claim.
Then synthetic leather surface has been able to do the fine pore structure of the polyurethane
 layer , the equivalent of natural grain leather , so that the appearance and internal structure
 pu leather and natural leather gradually close , other physical properties are close to natural
 leather index , the color is more vivid than natural leather , folding its normal temperature 
reached 100 million or more , cold folding can reach the level of natural leather .

Currently, there have been domestic and international markets microfiber polyurethane 
synthetic leather is the third generation of artificial leather, it is the use of natural leather 
collagen fiber bundle structure similar performance microfiber, a three-dimensional network 
structure made of high density non-woven fabric, combined with pu slurry impregnated with 
a newly developed open pore structure, 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 beam like ultra -fine 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, etc., 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.
In summary, the production of artificial leather industry has several decades of history , with 
the application of new materials , which are constantly updated product definition . Base
 fabric woven from today to a nonwoven fabric ; resin used in the resin from polyvinyl chloride, 
acrylic acid into the polyurethane ; fiber use from ordinary polyester, nylon, rayon and other 
synthetic fibers and the development of lotus -shaped fiber and ultrafine fiber and other 
functional differential fiber . From the style of products, artificial tanning has gone from low to 
high-end , from profiling to the development of the simulation , the characteristics and
 development direction of getting closer to the natural leather. After years of continuous 
research and development , pu synthetic leather in terms of product quality, variety , or 
yields have been rapid growth performance closer to natural leather, some performance even 
more than natural leather, reached the natural leather doubtful attainment in human daily life
 occupies a very important position.

No comments:

Post a Comment