Polypropylene spunbond non-woven fabric is made of polypropylene. It is polymerized into a web through high temperature drawing, and then bonded into fabric by hot rolling. The production process is simple, and the production output is large. As it is harmless to the human body, it is widely used in various fields such as sanitary materials, hygiene products, packing.
Features and advantages
The important reason for the rapid development of the spunbond method is that the production consumes synthetic polymers as raw materials. The melted polymers is made into continuous filaments in the polymer spinning process. After spinning, they are directly bonded to form a web.
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. The most significant effect of mass production is to reduce the cost of spunbond products, and maintain the quality, and which makes it very competitive in the market. They are widely used in the textile, paper and film markets as disposable and durable items. Secondly, because spunbond non-woven fabrics consumes polypropylene (PP) as the main raw material in large quantities, it has many advantages in terms of price, processing, and production costs. In return, these advantages have also greatly promoted the continuous development of the spunbond non-woven fabric industry. In addition, spunbond non-woven products have excellent physical 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 drawing and direct web formation. Therefore, the drawing of the spunbond method has become the core process of the production. The previous drawing method adopted mechanical drawing, which causes fiber monofilament Coarse, uneven spreading. In recent years, spunbond production equipment in the world are updated with air drawing technology. There are three different types of spunbond production lines, namely tubular drawing, wide-slit drawing, and narrow-slit drawing. Spunbond non-woven fabric technology is aiming 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 spunbonded non-woven fabrics , Hygroscopicity and other properties. The fine densified spunbond non-woven fabric can directly improve the softness and comfort of the spunbonded non-woven fabric. However, the thinning of the spunbond method has technical bottlenecks. For example, the thinning of the spunbond can increase the number of fibers per unit area of the spunbonded non-woven fabric, and the "bonding point" between the fibers and the fibers will increase. Products will become more uniform and coverage will increase.
