China's chemical fiber industry is a new industry developed after the founding of new China. Development process can be broadly divided into three stages. The first stage, the initial stage (1956 ~ 1965). Imported from Eastern European countries, viscose fiber production technology and equipment, at the same time rely on their own strength to build a number of viscose fiber production plant. The early 60s, from Japan, the United Kingdom have introduced the production of vinylon, acrylic whole production line. The second stage, the foundation stage (1966 ~ 1980). 60 years, vigorously develop the polyvinyl alcohol, the production of cotton fiber nylon fiber; 70 years, have formed more than one hundred thousand tons of production capacity, to ease the tight supply of cotton played a certain role. At the same time polyacrylonitrile has also been the corresponding development, creating acrylic production. Into the 70s, with the development of China's petrochemical industry, the completion of large-scale ethylene and synthetic base, the rapid development of synthetic fiber industry, in which the development of polyester fiber is particularly rapid, laid the foundation for the greater development of China's chemical fiber industry. The third stage, the stage of development (beginning in 1981). 80s construction of large-scale chemical fiber enterprises --- Yizheng Chemical Fiber Project in Jiangsu Province; Shanghai Petrochemical Company completed the second phase of the project, and in Guangdong Xinhui, Foshan, Henan Pingdingshan and Liaoning Fushun and other places, built a number of technologically advanced polyester , Nylon and acrylic plant. 90 years and completed the three Yizheng and Liao second phase of the project. In 1995, China's chemical fiber output reached 2.885 million tons, second only to the United States, ranking second in the world. Since the late 1990s, a number of large-scale modern chemical fiber manufacturers have been established in Zhejiang and Jiangsu Provinces, such as Jiangsu Sanfangxiang Group Co., Ltd., Zhejiang Tongkun Chemical Fiber Group Co., Ltd. and Zhejiang Hengyi Group Co., Ltd. In order to meet the needs of the development of China's textile industry, chemical fiber industry in the rapid development at the same time, China has begun to pay attention to the research and development of differential fiber, chemical fiber new varieties continue to put into operation. Among them are annual output of more than 10,000 tons of non-ferrous metals, network wire, fine denier wire, high strength low stretch sewing thread, etc .; have annual output of more than 1,000 tons of high shrinkage fibers, shaped fibers, polyester cationic dyeable modified fibers, Polyester, air deformable wire, far infrared fiber, hollow imitation feather fiber, antistatic fiber, nanofiber, smart fiber. In 2004, the world's total fiber output reached 60,800 kt, an increase of 14% over 2003. Chemical fiber increased by 9% and output reached 34,600 kt. The UN forecasts that in 2050, the total amount of natural fiber and chemical fiber will reach 90,000 to 100,000 kt, of which chemical fiber accounts for 80%, and its output will increase at a rate faster than the world population. China is a large chemical fiber producer. In 2006, the chemical fiber production capacity has reached 22.5 million tons, accounting for 40% of the world's chemical fiber production capacity. Over 70% of the production capacity is the high-quality production capacity developed after 1999 with the main technologies and equipment reaching the 20th century In the late 1990s, the international advanced level reached the international advanced level in the early 21st century [3]. By the end of 2006, there will be 26 chemical fiber enterprises with an annual output of over 200,000 tons, with a total capacity of 10,330,000 tons, accounting for 45.9% of the total capacity and an average capacity of 400,000 tons / year
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