The spunbond method is a comprehensive technology involving many disciplines. The spunbond technology is developing at a rapid speed. At present, several process production modes with characteristics are formed. We should strengthen our development efforts, innovate, and form our own proprietary technology and intellectual property rights, which is the fundamental way for enterprises to remain invincible.
1 large plate narrow
Due to the uniform surface of the products produced by the large plate mode, it is suitable for medical and health products. Since most of these products are colored, due to the low production volume of narrow production lines, several narrow and small lines are installed, and each line produces one color. To minimize the transition color products and improve economic efficiency.
2 small board width
The small plate mode has a small difference in vertical and horizontal strength, and the product is suitable for waterproof base fabrics and packaging materials. Most of these products are colorless, and the processing cost of the wide large plate spinneret is doubled. The 5.lm production line has been put into production. At present, the domestic high-volume extruder has been industrialized, and the wide-width hot rolling mill manufacturing technology has matured. Production lines with a width of 6.4m and an output of tens of thousands of tons per 9.6m are also possible. It is estimated that the output of the single-die with a width of 6.4m is 20,000t/a, and the power consumption of the production line reaches 450Kwh; the large-plate mode double-die width 3.2m yields 15,000 t/a electricity consumption reaches 434Kwh.
With the rapid development of the nonwovens industry in recent years, the number of spunbond lines has rapidly expanded, and the production capacity of stand-alone equipment has become the focus. Despite some difficulties in the design and manufacture of wide-format high-speed production lines, high-yield production lines have played an active role in reducing the processing costs and large-scale management of the entire industry, and have brought considerable economic benefits to the market competition. For example, in the 1970s, the output of small fertilizers was 3,000 t/a, and later it was developed to 300,000 t/a of synthetic ammonia. The output of the original small paper was several thousand tons. In recent years, 400,000 t/a paper machines have appeared. This is the trend of social development and the inevitable result of market competition and technological progress.
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