The basic process of spunbond nonwovens

The basic process of spunbond nonwovens is the process of dividing filaments. 　　nonwovens dividing the filaments technology refers to the separation of the filaments after drawing into monofilaments to prevent the fibers from sticking or tangling during the web formation. Commonly used non-woven fabric separation methods are as follows: 　　1. Flow separation method uses the aerodynamic effect (such as the sudden diffusion of airflow) produced by the stretched airflow in a certain shape of pipe to separate the filaments. , The horizontal strength is relatively large, and it is not easy to be combined.　　2. The flying separation method separates the stretched wire from the baffle, deflection plate or vibrating plate at high speed to prevent impact and vibration. For wall-attached orbiting wire, a horizontally swinging orbiting roller is set at the outlet of the drafting tube. The orbiting frequency is usually below 400Hz. When the suction under the wire is insufficient and the air flow fluctuates, it is easy to produce doubling, and the vertical and horizontal strength of the product is relatively small. The beating wire uses a beating head similar to an agricultural spray with a beating frequency of 800-1200 Hz. The uniformity of the low-gram weight fiber web is poor and cloud spots are easy to appear. 3. When the forced electrification method is stretched, the silk is passed through an electrostatic field of up to tens of thousands of volts (or even higher), so that the silk strips are charged with the same kind of charge and repel and separate, but they have no effect on the airflow. Remember to supplement it with Other technical means can achieve the uniform reduction of air flow after drafting.　　4. The rubbing method uses static electricity generated by the friction of the filaments in the stretching process to separate filaments. In order to increase the electrification strength of the thread, there are certain choices for the fiber cross section, and at the same time, some additives that can increase the electrostatic effect can be added to the polymer. Quanzhou Non-woven Fabric Co., Ltd. is a manufacturer specializing in the production of environmentally friendly non-woven fabrics. The non-woven products produced are becoming more and more popular in the market. If you buy non-woven fabrics, go to Quanzhou! Previous: Hot-rolled non-woven fabrics Features and main uses