Characteristics and advantages of polypropylene spunbonded nonwoven fabrics

The important reason for the rapid development of spunbonded method is that it uses synthetic polymers as raw materials. This method utilizes the principle of chemical fiber spinning. During the polymer spinning process, continuous filaments are spun, spun into a web, and then directly bonded to produce non-woven fabrics. The manufacturing method is very simple and fast. Compared with the dry process non-woven fabric processing technology, it eliminates a series of tedious intermediate processes such as fiber curling, cutting, packaging, transportation, mixing, and carding. This continuous The obvious effect of mass production is to reduce the cost of spunbonded products, stabilize their quality, and enhance their market competitiveness. They can enter the market of textiles, paper, and film for various purposes such as disposable and durable. Secondly, due to the extensive use of polypropylene as the main raw material for spunbonded nonwoven fabrics, it has many advantages in terms of price, processing process, production costs, etc., which has greatly contributed to the sustainable development of the spunbonded nonwoven fabric industry. In addition, the mechanical properties of spunbonded nonwoven products are excellent, with indicators such as tensile strength, breaking elongation, and tear strength superior to those of dry, wet, and melt blown nonwoven fabrics. Especially in recent years, the rapid development of spunbonded methods in production line scale, technology, equipment, and product market development has greatly expanded the application field of spunbonded nonwoven fabrics.

The major difference between the production process of spunbonded method and chemical fiber spinning is the use of air flow drafting and direct web formation. Therefore, the drafting of spunbonded method has become a core technical issue. In the past, mechanical drafting was used for drafting, resulting in thicker fibers and uneven web placement. Air flow drafting technology has been adopted in spunbonded production equipment around the world. Due to different air flow drafting methods, there are three different forms of spunbonded production lines, namely, tube type drafting, wide and narrow slot type drafting, and narrow slot type drafting.

The technology of spunbonded nonwoven fabrics has been used to improve the production line's ability and solve the problems of uniformity, covering, and rough feel of nonwoven fabrics, in order to improve the strength, softness, uniformity, comfort, and moisture absorption of spunbonded nonwoven fabrics.

Fine denier spunbonded nonwoven fabrics can directly improve the softness and comfort of spunbonded nonwoven fabrics. However, there are technical bottlenecks in the micronization of spunbonded nonwoven fabrics. For example, micronization can increase the number of fibers per unit area of spunbonded nonwoven fabrics, increase the "bonding point" between fibers, and make the product more uniform and improve coverage.