Advantages and characteristics of polypropylene non-woven fabrics
The important notice for the growth of polypropylene non-woven fabrics is that it uses synthetic polymers as raw materials. This method dominates chemical fiber spinning and continues filaments during polymer spinning, after being sprayed into a net, it is directly bonded to make a non-woven fabric. The preparation is very simple and fast, compared with the dry non-woven fabric processing technology, A series of tedious core processes such as fiber curling, cutting, packaging, conveying, assimilation and carding are eliminated, the most important end of this kind of continuous and multi-quantity production is to make the cost of spunbond products fall, the moral character remains unchanged, and the market competitiveness is strong, it can enter the market scale of textiles, paper and films in various uses of disposable and durable.
Secondly, because the spunbonded non-woven fabric operates polypropylene in large quantities as an important raw material, it has many advantages in price, processing process and production cost, it also greatly enhanced the continued growth of spunbonded non-woven fabric property.
In addition, the mechanical properties of spunbond non-woven fabric products are excellent, and their tensile strength, fracture elongation, tear strength and other pointers are better than dry, wet and blown non-woven fabrics, however, compared with the active growth of the spunbond method in the production line scale, craftsmanship and equipment, as well as the product market, it has greatly expanded the operation scale of spunbond non-woven fabrics.
The biggest difference between the spunbond production process and the chemical fiber spinning is the use of airflow drafting and direct forming of the net. It is the issue of the drafting of the spunbond method as the focus of the craft. The previous drafting was made by mechanical drafting, the fiber monofilament is thicker and the net is uneven.
At present, the spinning production equipment of all countries in the world has adopted the airflow drafting process. Due to the differences in the preparation of airflow drafting, there are three different situations in which the spinning production line is formed, tube drafting, wide slit drafting, narrow slit drafting, etc.
Spunbonded non-woven fabric technology has always been based on the ability to lift across the production line and solve the problems of non-woven fabric uniformity, retouching algae, rough feel, etc, to improve the strength, flexibility, uniformity, comfort and hygroscopicity of spunbond non-woven fabrics.
Fine Danhua spunbonded non-woven fabrics can directly improve the problems of excellent flexibility and comfort of spunbonded non-woven fabrics.
However, the fine ditching of the spunbond method has a technical bottleneck. For example, fine ditching can increase the number of fibers in the area of the spunbond non-woven fabric unit, the 'connection point' between fiber and fiber will increase, the product will double evenly, and the cage cover rate will advance.
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