Building materials
In Europe and the United States, especially in Europe, this kind of waterproof material with superior performance has been widely used since the late 1980s and early 1990s. Its market share is over 40%, and most of them are PET spunbonded tire base. China's application of polyester linoleum tire base started late, and the amount used in 2000 was only 20 million m2. However, since the beginning of the new century, new waterproof materials have developed rapidly. By 2002, the application volume of modified asphalt waterproofing membrane with PET fiber as the base material reached 70 million m2, and continued to grow. It is predicted that in the next five years, the modified bitumen waterproofing membrane will continue to develop at a relatively fast pace, and by 2010 the proportion will increase to more than 20%. The potential market for new waterproof materials in China is very large (about 8 to 1 billion m2). With the continuous development of China's economic construction, PET spunbonded felt base has an optimistic development prospect.
2. Geotechnical materials
The application of geotextiles in foreign countries began as early as the 1960s. The United States is the country with the largest consumption of geotextiles in the world. In the early 1990s, its annual consumption was over 300 million m2, and in recent years it reached 700 million m2. . The geotextiles of Europe and Sakamoto have also developed rapidly. The annual usage of geotextiles in Europe has also been around 400 million m2, of which spunbonded nonwovens account for about 60% of non-woven geotextiles; The application of geotextiles has grown significantly since the mid-1980s. The spunbond geotextile has the largest amount of spunbonding, accounting for about 60% of the total amount of nonwoven geotextiles, and is mainly PET spunbonded fabric.
China's geotextiles started in the early 1980s, but at the time the amount was very small, only experimental applications. It was not until 1998 that the devastating flood caused the government to pay attention. The construction department included the application of geotextiles in the design specifications and formulated relevant national standards. The geotextiles were truly valued and developed. At present, the amount of geotextiles in China has exceeded 300 million m2, and the proportion of non-woven geotextiles has reached 40%. China's civil engineering construction has a huge potential market, and its potential is never lower than the current US consumption of 700-800 million m2. Experts estimate that China's geotextiles will continue to grow in double digits in the next 15 years, with PET spunbonded filament geotextiles growing faster.
During the “10th Five-Year Plan†and “Eleventh Five-Year Planâ€, China plans to invest heavily in water conservancy, electric power, transportation, environmental protection, river governance and other projects, including water conservancy construction, South-to-North Water Transfer Project, power investment, road and railway. Construction, environmental engineering construction, as well as ports, airports, garbage disposal, rivers and lakes, sand control, etc., the investment amounted to trillions of yuan. In the next 10 years or more, China will have more infrastructure projects to build, and there will be more and more demand for geotextiles. China will become the world's largest marketing market for geosynthetics.
Domestic PET spunbond needle-punched nonwoven fabric production capacity
At present, China has about 9 PET spunbond acupuncture production lines with a total production capacity of about 31,000 t/a, including Yizheng Nonwovens Factory, Hunan Nonwovens Factory, Henan Sanli Company, Shanghai Jiasmaiwei Company, Jiangxi. Guoqiao Company is the production line of Italy or West Germany, Shaoxing Lida, Xinjiang Tianli, Luanchuan Non-woven, Dalian Hengda and other domestic production lines, with a minimum width of 2.4m and a maximum width of 6m. These production lines have a maximum production capacity of 4,500 t/a and a minimum production capacity of 1000 t/a. Designed and manufactured by the Textile Industry Nonwovens Technology Development Center, the 4.5m wide PET spunbond geotextile and linoleum base fabric used in Xinjiang Tianli Company is a domestically produced machine with the highest production capacity and best product quality. The production capacity is up to 3500 t/a.
At present, the main products produced by these production lines include geotextiles, engineering anti-seepage materials, building waterproof materials, composite reinforcement materials, automotive fabrics, cushioning materials, and chemical sheets for shoes. The prospects are very impressive.
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