1. Building materials Building materials include a wide range of materials. Materials used in spunbond nonwovens mainly refer to roof waterproofing materials, followed by wall insulation and sound insulation, wall-based waterproofing, pipeline protection, and underground drainage. Prevents the growth of roots from invading materials such as buildings. Currently in China, applications are mainly concentrated in the field of roof waterproofing materials.
In Europe and the United States, especially in Europe, this superior performance waterproof material has been widely used since the late 1980s and early 1990s. Its market share is over 40%, and most of them are PET spunbonded tires. China started late in the application of polyester linoleum tire base, and it will not exceed 20 million m2 by the year 2000. However, since the new century, new types of waterproof materials have developed rapidly. By 2002, the application of modified bitumen waterproofing membranes with PET fiber as the base has reached 70 million m2, and continues to grow. It is predicted that in the next five years, the modified bitumen membrane will continue to develop at a relatively high speed, and the proportion of the total volume of the bitumen membrane will increase to more than 20% by 2010. The potential market for new types of waterproof materials in China is very large (approximately 8-100 million m2). With the continuous development of China's economic construction, PET spunbonded felts have an optimistic development prospect.
2. Geotextiles The application of geotextiles to geotextiles abroad began as early as the 1960s. The United States is the country with the largest geotextile consumption in the world. Its annual consumption in the early 1990s was more than 300 million m2. It reached 700 million m2. Geotextiles in Europe and Japan have also developed rapidly. The annual amount of geotextiles in Europe in recent years is also around 400 million m2, of which spunbonded nonwovens account for about 60% of non-woven geotextiles; After the middle of the decade, there has been a significant increase in the use of geotextiles. Spunbond geotextiles have the largest amount of spunbonds, accounting for about 60% of the total nonwoven geotextiles, and are mainly PET spunbonds.
Geotextiles in China started in the early 1980s, but at that time, the amount was very small and it was just a test application. Until the 1998 floods caused the government's attention, the construction department put the application of geotextiles into the design specifications, and formulated the relevant national standards. The geotextile was really valued and developed. At present, the amount of geotextile used 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 U.S. consumption of 7 to 800 million m2. Experts estimate that China's geotextile fabrics will continue to grow in double digits in the next 15 years, of which PET spinning spunbonded filament geotextiles will grow faster.
During the period of the “10th Five-Year Plan†and the “Eleventh Five-Year Plan†period, China’s planned investments in water conservancy, power, transportation, environmental protection, river governance and other projects are huge, including water conservancy construction, South-to-North Water Diversion Project, power investment, roads and railways. Construction and environmental engineering construction, as well as ports, airports, garbage disposal, rivers, lakes, and seas, governance, sand control, and other projects, have reached trillions of dollars in investment. In the next 10 years or more, China will have more infrastructure projects to build and demand for geotextiles will increase. China will become the largest market for geosynthetics in the world.
Domestic PET spunbond acupuncture non-woven fabrics production capacity Currently, China has about 9 PET spunbonded acupuncture production lines, with a total production capacity of about 31,000 t/a, including Yizheng Nonwovens Factory, Hunan Nonwovens Factory, Henan III Li Corporation, Shanghai Jia Simai Wei and Jiangxi Guoqiao are production lines for Italy or West Germany. Shaoxing Lida, Xinjiang Tianli, Zichuan Nonwovens, Dalian Hengda and others are domestic production lines with a minimum width of 2.4. m, the maximum width is 6m. The maximum production capacity of these production lines is 4500 t/a and the minimum production capacity is 1000 t/a. The 4.5m-width PET spunbond geotextile and felt base fabric dual-purpose production line designed and manufactured by the Textile Industry Nonwovens Technology Development Center in Xinjiang Tianli Co., Ltd. is a device with large domestic production capacity and best product quality. The production capacity reaches 3500 t/a.
At present, the major products produced by these production lines include geotextiles, engineering impervious materials, building waterproofing materials, composite reinforcements, automotive fabrics, cushioning materials, and chemical sheets for shoes. Its prospects are very impressive.
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