Introduction of Ru0026D categories on differentiated products of spunbonded nonwovens (2018 latest summary)

Spunbond nonwoven fabric used to be the most popular nonwoven fabric in China. It has been in short supply for a long time. However, due to the increasing number of manufacturers and the increasingly fierce market competition, spinning The development of differentiated products for bonded nonwovens has become a top priority. Geotextile used to be a sweet and pastry product. Nowadays, the supply exceeds demand, the competition is fierce, and the sales are difficult. The life of the enterprise is very sad. Facing the severe form, we must find a new way out: adjust the product structure. We set the goal within the scope of the spunbond method and strive for product diversity and differentiation. So we embarked on a road of research and development of differentiated spunbond products. Polishing functional non-woven fabrics: entering the market development stage Polishing functional non-woven fabrics are differentiated varieties derived from polyester hot-rolled non-woven fabrics. The principle is very simple, that is, a very fine silicon carbide abrasive is added during the production of non-woven fabrics. It's just that at the beginning of the experiment, the silicon carbide subdivided in the polyester solution has a clustering phenomenon. Under the microscope, about 90% of the abrasives are clustered together, and only about 10% are dispersed among the fibers. Therefore, we designed only one mixer in the melt pipeline to solve the uniform mixing problem. In the research and development of polypropylene filament geotextile, our company has discussed the trial production of Binlun Changsi geotextile. We used to change the spinneret for polypropylene on the polyester geotextile production line. The result was that the fiber was bonded to the drafter entrance. Obviously, the cooling effect of side blowing is not good. The main conclusion of the experiment is that the polypropylene geotextile has poor strength. Later the test was put on hold. In fact, it is not suitable to test on a large-scale polyester geotextile production line. Development of reinforced geotextiles Reinforced geotextiles are a variety derived from ordinary filament geotextiles. We conducted this test on a 4.4-meter spunbonded nonwoven production line. On the production line, we have two oscillating wires. After the first oscillating wire is laid, the warp and weft threads are laid on the machine, and then the second oscillating wire is laid on top. cloth. This sandwich structure greatly improves the tensile strength of the geotextile because of the 'ribs' of the warp and weft, while its water filtration performance remains unchanged. Concluding remarks While we are tackling key technical problems, we are building beautiful dreams. We are looking forward to the industrialization of the scientific and technological achievements we have developed. We will build a 6-meter-wide production line for polypropylene filament geotextiles with an annual output of 3,500 tons, so that my country's geosynthetics The new force contributes to the development of my country's industrial nonwovens industry.