Polymer (polypropylene + return) - high temperature melt extrusion of large spiral stalk - Filter - metering pump (quantitative delivery) - spinning (spinning and drawing) - cooling - Air traction - net curtain - Net - up and down roller (pre reinforcement) - hot rolling (reinforcement) of rolling mill - winding - down distribution Cut - weighing packaging - finished product
In the world, the technology of spunbonded nonwovens mainly includes Germany's Phil's technology of Lai Ke, Italy's STP technology and Kobe's steel making technology in Japan. The current situation, especially become the mainstream technology in the world to lyfing technology. At present, it has developed to the fourth generation technology. It is characterized by negative pressure and super high speed airflow drafting, and the fiber can be stretched to 1, but about Neal. Many enterprises have been imitated in China. Because the core technology has many frontier problems that have not been solved or mastered, it is still in time for domestic equipment manufacturing enterprises to reach the level of the technology.