Features and advantages of spunbond non-woven fabrics

Polypropylene spunbond non-woven fabric is a kind of non-woven fabric, which is made of polypropylene as a raw material, polymerized into a net through high temperature drawing, and then bonded into a fabric by hot rolling. Due to the simple process flow and large output, it is non-toxic and harmless to the human body. Therefore, it is widely used in various fields such as sanitary materials.


Features and advantages


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. In the process of polymer spinning, continuous filaments are spun into a web and then directly bonded. The manufacturing method of non-woven fabrics is very simple and fast. Compared with the 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. The most significant effect of continuous and large-scale production is to reduce the cost of spunbond products, stable quality, and strong market competitiveness. It can enter the market of textiles, paper and film in a variety of disposable and durable applications. in. 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 products 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 of production line scale, technology and equipment, and product market development has greatly expanded the application fields of spunbonded 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 process has become the core technical issue. The previous drafting is based on mechanical drafting. The fiber monofilament is thicker and the web is not evenly laid. At present, spunbond production equipment in the world has adopted air drafting technology. Due to 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, concealment, rough hand feeling, etc., to improve the strength, softness and uniformity of spunbonded non-woven fabrics As well as comfort, moisture absorption and other properties.　　


Spunbond non-woven fabrics can directly improve the softness and comfort of spunbond non-woven fabrics. However, the spunbond method has technical bottlenecks. For example, the number of fibers per unit area of u200bu200bthe spunbond nonwoven fabric can be increased, the 'bonding points' between the fibers and the fibers will increase, and the product will become more Evenly, the coverage rate is also improved.