The spunbonded nonwoven fabric utilizes the principle of chemical fiber spinning to lay continuous filaments into a web during the spinning process of the polymer. The filament web is subjected to needle punching, hydroentangling, chemical bonding, and hot rolling bonding. The nonwoven fabric is formed by a method or a hot air bonding method.

The spunbond production technology can adapt to different kinds of high polymers, the process is short, flexible and diverse, the technology is mature, the technology content is high, the degree of automation is high, and the spinning speed is multiplied, the strength of the single fiber is greatly improved, and the fiber is coming. The finer the meshing speed is, the faster the netting uniformity is. Its output has accounted for 60%-70% of the world's total non-woven fabric production, and its application range is also wider.

The spunbonded nonwoven fabric is composed of continuous filaments, so it has good tensile strength; the filament density of the non-woven fabric can be large or small, and the range of variation can be wide; the web can be reinforced by various methods. Therefore, the product is given good application performance and enhanced competitiveness. Since the spunbonded nonwoven fabric is directly formed into a cloth by laying the continuous filaments into a net, the fiber has a high utilization factor, a large coverage per unit area, and a good coating property, so that it can be processed into a low-density nonwoven fabric, which is other A variety of non-woven fabrics are unmatched. Generally speaking, the spunbonded nonwoven fabric has high comprehensive strength level, smooth surface and low depilling property, soft hand feeling, folding and abrasion resistance, good shading and gas permeability, good water absorption and lipophilicity, heat resistance, acid resistance and alkali resistance. Anti-mold and anti-mite, good dimensional stability, easy to process, easy to recycle.

Because of its simple production process, short process flow, low product cost, unique structure and superior technical performance, spunbonded nonwoven fabrics are widely used in the automotive industry, and their usage is far greater than other various types. Woven cloth. Spunbonded non-woven fabric can not only be used as various interior decoration materials for automobiles, but also can be used as a waterproof and waterproof material for automobiles. It can also be used as a reinforcing frame material for automobiles, and can also be used as various packaging protection materials for automobiles, and is also an ideal automobile. Industrial filter materials.

In the production process of polypropylene spunbonded nonwoven fabrics, broken filaments often seriously affect the normal production. The main performances are: leaking drops, drawing broken wires.

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