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The advantages and characteristics of polypropylene non-woven fabrics

by:XINYU Non-woven     2022-02-04

An important reason for the active development of polypropylene non-woven fabrics is that it uses synthetic polymers as raw materials. This method dominates the spinning of chemical fibers. In the process of polymer spinning, filaments are continued, and after spinning, they are directly bonded to the web. It is very simple and fast to make non-woven fabrics. Compared with the processing technology of dry-laid non-woven fabrics, it saves a series of tedious core processes such as fiber curling, cutting, packaging, conveying, assimilation, and carding. The most obvious result of continuous and large-scale production is to reduce the cost of spunbond products, maintain the same quality, and have strong market competitiveness. It can enter textiles, paper and film in various applications of disposable and durability. of the market size. Secondly, since spunbond non-woven fabrics use polypropylene as an important raw material in large quantities, it has many advantages in terms of price, processing process, production cost, etc., which also greatly enhances the continuous development of spunbond non-woven fabrics industry. In addition, the mechanical properties of spunbond non-woven products are excellent, and their tensile strength, elongation at break, tear strength and other indicators are better than those of dry, wet, and meltblown non-woven fabrics, especially in recent years. The active development of the bonding method in the production line scale, technology and equipment, and product market development has greatly expanded the operating scale of spunbond non-woven fabrics.

The biggest difference between the production process of spunbonding and chemical fiber spinning is the use of air drafting and direct web formation, so the drafting of spunbonding has become a technical problem. The previous drafting was It is woven by mechanical drafting, the fiber monofilament is thick and the laying is uneven. At present, the spunbond production equipment in all countries in the world has adopted the airflow drafting technology. Due to the different airflow drafting systems, there are three different types of spunbond production lines, namely tubular drafting, wide slit drafting, and narrow slit drafting. Extend and so on.

The spunbond non-woven technology has always been to improve the ability to cross the production line and solve the problems of the uniformity of the non-woven fabric, the modification of the algae, the rough hand, etc., to improve the non-woven fabric of the spunbond method. Textile strength, excellent flexibility, uniformity, comfort, moisture absorption and other properties.

Spunbonded non-woven fabrics with fine dandruff can directly improve the flexibility and comfort of spunbond non-woven fabrics. However, the fine densification of the spunbond method has technical bottlenecks. For example, the fine densification can increase the number of fibers in the unit area of u200bu200bthe spunbond non-woven fabric, and the 'connection points' between fibers and fibers will increase. , the product will also become more uniform, and the coverage rate will also increase.

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