Features and advantages of spunbond nonwovens

Polypropylene spunbond non-woven fabric is a kind of non-woven fabric, which is made of polypropylene as raw material, polymerized into a network by 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 sanitary materials, and other fields.

Features and advantages

The important reason for the rapid development of the spunbond method is that it uses synthetic polymers as raw materials. This method uses the principle of chemical fiber spinning. The continuous filaments are directly bonded to form a non-woven fabric after spinning, and the manufacturing method is very simple and fast. Compared with the dry-laid non-woven fabric processing technology, fiber curling, cutting, packaging, and transportation are omitted. A series of tedious intermediate processes such as mixing, carding, etc. The most significant effect of this continuous and large-scale production is to reduce the cost of spunbond products, stable quality, strong market competitiveness, disposable and durability. These applications can enter the textile, paper and film market segments. Secondly, since spunbond non-woven fabrics use a large amount of polypropylene as the main raw material, it has many advantages in terms of price, processing process, production cost, etc., which also greatly promotes the sustainable development of the spunbond non-woven fabric industry. In addition, spunbond nonwoven products have excellent mechanical properties, and their tensile strength, elongation at break, tear strength and other indicators are better than dry, wet, and meltblown nonwovens, especially in recent years, spunbond The rapid development in production line scale, technology and equipment and product market development has greatly expanded the application field of spunbond non-woven fabrics.

The biggest difference between the production process of spunbond and chemical fiber spinning is the use of air drafting and direct web formation. Therefore, the drafting of spunbonding has become a core technical problem. In the past, mechanical drafting was used. In the drafting method, the fiber monofilament is thicker and the laying is uneven. At present, the spunbond production equipment all over the world has adopted the airflow drafting technology. Due to the different airflow drafting methods, there are three different forms of spunbond production lines, namely tubular drafting, wide slit drafting, and narrow slit drafting. Extend and so on.

The technology of spunbond non-woven fabrics has been improving the strength and softness of spunbond non-woven fabrics by improving the ability of production line and solving the problems of uniformity, covering and rough hand of non-woven fabrics. properties, uniformity, comfort, and hygroscopicity.

Spunbond non-woven fabrics can directly improve the softness and comfort of spunbond non-woven fabrics. However, the spunbond method has technical bottlenecks. If the number of fibers per unit area of u200bu200bthe spunbond non-woven fabric can be increased, the 'bonding points' between fibers and fibers will increase, and the product will become more Even, coverage is also improved.

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