Polypropylene spunbond non-woven fabric is a kind of no […]
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.
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 fabrics, a series of cumbersome 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 market of textiles, paper and films 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 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 method has become the core technical issue. The previous drafting method used mechanical drafting, and the fiber monofilament Coarse, uneven spreading. Zhejiang Yanpeng Non-woven Machinery Co., Ltd. specializes in the production of non-woven equipment.
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, uniformity and comfort of spunbond non-woven fabrics , Hygroscopicity and other properties.