Features and advantages of non-woven fabrics

The important reason for the rapid development of the spunbond method is that it uses synthetic polymers as raw materials. The method uses the principle of chemical fiber spinning to make continuous filaments in the polymer spinning process. After spinning, they are directly bonded to form a net. Non-woven fabrics have a very simple and fast manufacturing method. Compared with dry-laid non-woven fabric processing technology, a series of tedious intermediate processes such as fiber crimping, cutting, packaging, transportation, mixing, and carding are eliminated. This continuous and large The most significant effect of mass production is to reduce the cost of spunbond products, stabilize their quality, and have strong market competitiveness. They can enter the textile, paper and film markets in various applications such as disposable and durable. Secondly, because spunbond non-woven fabrics use polypropylene as the main raw material in large quantities, its many advantages in terms of price, processing, and production costs have also greatly promoted the sustainable development of the spunbonded non-woven fabric industry. In addition, spunbond non-woven fabrics have excellent mechanical properties, and their tensile strength, elongation at break, tear strength and other indicators are better than dry, wet, and melt-blown non-woven fabrics, especially in recent years. The rapid development in production line scale, technology and equipment, and product market development has greatly expanded the application fields of spunbond non-woven fabrics.

The biggest difference between the spunbond production process and chemical fiber spinning is the use of air drafting and direct web formation. Therefore, the drafting of the spunbond method has become the core technical problem. The previous drafting method is based on mechanical drafting. Coarse, uneven laying. At present, spunbond production equipment in the world has adopted air drafting technology. Due to the different air drafting methods, there are three different forms of spunbond production lines, namely tubular drafting, wide-slit drafting, and narrow-slit drafting. Stretch and wait.

Spunbond non-woven fabric technology has always been to improve the capacity of the production line and solve the problems of non-woven fabric uniformity, covering, rough hand feeling, etc., to improve the strength, softness, uniformity and comfort of spunbond non-woven fabric , Hygroscopicity and other properties.The fine densified spunbond non-woven fabric can directly improve the softness and comfort of the spunbond non-woven fabric. However, the thinning of the spunbond method has technical bottlenecks. For example, thinning can increase the number of fibers per unit area of the spunbond non-woven fabric, and the bonding points between fibers and fibers will increase. Products will become more uniform and coverage will increase.