The advantages of polypropylene spunbonded non-woven fabric
Polypropylene spunbonded non-woven fabric is a kind of non-woven fabric, which is made of polypropylene as raw material, polymerized into a net after high temperature wire drawing, and then bonded into a cloth by hot rolling method. Due to the simple process, large output, non-toxic and harmless to human body. So it is widely used in various fields, such as health materials.
Features and Advantages
The important reason for the rapid development of spunbond method is that it is made of synthetic polymer as raw material, the use of chemical fiber spinning principle, continuous filament in the polymer spinning process, after the spinneret into a net after direct bonding and made of non-woven fabric, manufacturing method is very simple and fast, compared with dry non-woven fabric processing technology, Eliminating the fiber crimp, cutting, packaging, transport, mixing, carding and a series of complex in the middle of the process, the continuous, high-volume production of the most significant effect is to make the method of spun-bonded product cost reduction, stable quality, strong market competitiveness, in use disposable and durability of various USES can enter into the field of the textile, paper, and the film market. Secondly, because the spunbonded non-woven fabric uses polypropylene as the main raw material in large quantities, its price, processing, production costs and other aspects of many advantages, but also greatly promoted the sustainable development of the spunbonded non-woven fabric industry. In addition, the method of spun-bonded non-woven products excellent mechanical properties, its tensile strength, elongation at break, tear strength and other pointer is superior to dry, wet, melt-blown non-woven fabric, especially in recent years, spun-bonded method in production scale, technology and equipment, and the rapid development of the product market development, greatly expands the application fields of spun-bonded non-woven fabrics. The biggest difference between spunbond production process and chemical fiber spinning process is the use of air draft and direct net formation, so the drafting of spunbond process has become the core problem of technology. In the past, the drafting method is mechanical drafting, the fiber monfilaments are thicker and the network is uneven. At present, all the spunbond production equipment in the world have adopted air draft technology. Due to the different air draft methods, there are three different forms of spunbond production line, including tube draft, wide slit draft, narrow slit draft, etc. Method of spun-bonded nonwoven technology is to enhance the capacity of production line and solve the uniformity of non-woven fabrics, cover, feel is rough and other issues, to improve the method of spun-bonded non-woven fabric strength, softness, uniformity, and comfort, moisture absorption performance, such as fine Dan spun-bonded non-woven can directly improve the method of spun-bonded non-woven fabric softness and comfort. However, the fineness of the spunbond method has technical bottlenecks, such as fineness can make the number of fiber roots per unit area of the spunbond non-woven fabric increase, the "junction point" between fibers and fibers will increase, the product will become more uniform, and the coverage rate will improve.