- Issue Time
- Dec 8,2021
You can learn more about the main core components of the meltblown nonwoven equipment in this article, so as to better understand the structure and characteristics of the meltblown nonwoven equipment, so as to operate the machine.
At present, there are many production lines of meltblown nonwoven equipment on the market, ranging from 300 to 3,200mm in width, and the configuration is also very different, but the main core components are the same, they are all in the meltblown nonwoven equipment Plays a very important role in. The following are the main core components of meltblown non-woven equipment.
According to the width of the product, the extruder is from 50/30, 65/30, 75/30, 90/30, 105/30, 150/30 and other types of extruders. Small lines are mainly 600mm type. 65/30 single-screw extruder. Generally, this type of machine mainly depends on the screw and barrel, and the barrel needs to be grooved to increase the effect of feeding and plasticizing.
Large lines also need barrel drawing grooves. The screw speed is moderate or small (The wind pressure is small, the extrusion volume can be small, and the wind pressure is large, and the extrusion volume can be larger.)
Temperature equipment: It is recommended not to be too high. Small-line temperature reference: 160-170 degrees in zone 1, 190-210 in zone 2,200-225 in zone 3,205-230 in zone 4, screen changer and metering pump temperature 225- 240 degrees.
The mold is mainly of the coat hanger type, and the core is the selection of the air duct. The mold requires uniform discharge. It is recommended to heat the new mold in a high-temperature oven before using it. In this way, it is not easy to block the mold during the test machine process. The mold temperature is 220-250 degrees.
3. Roots blower
At present, most Roots blowers are used, but air compressors can also be selected. What needs to be ensured is the air volume. Take the 600mm small line as an example: If a 22KW Roots blower is to continuously provide 0.08-0.1Mpa without air compressor stability, it is mainly continuous supply unstable pressure.
The temperature setting of the inlet and outlet is adjusted according to the situation of the cloth, and the temperature is generally set between 260-270 degrees. Heating pot temperature: 300-330 degrees.
1600mm large wire: wind pressure: 0.2-0.5MPa(Generally, for low-temperature PP materials, the wind pressure can be lower, and for medium-high temperature materials and melt index materials around 1300, the wind pressure can be larger.)
4. Electret equipment
Electret equipment is more critical, the core component of the rotor, cannot be broken down at 100,000 volts. At present, there is not much electrical equipment in China. Normal booting must reach more than 60,000 volts. The electrostatic adsorption effect is better.
5. Metering pump
The use of metering pumps is more critical. It is necessary to calculate the ratio between the screw and the metering pump so as to avoid excessive or insufficient feeding, backflow, and uneven cloth thickness.
The melt-blown method is a method that relies on high-temperature, high-speed airflow to blow the polymer melt to make it quickly stretched to prepare fibers.
After the polymer chips are heated and pressurized by the screw extruder into a molten state, they reach the spinneret hole at the front of the nozzle through the melt distribution channel and are then stretched by two convergent high-speed and high-temperature airflows to make them thin.
The thinned fiber is cooled and solidified on the mesh device to form a melt-blown non-woven fabric.
If you want to know more about meltblown non-woven fabric equipment after reading it, you can get a comprehensive solution by contacting us.
With excellent R&D technology and professional products, AZX has quickly become one of the leading non-woven machine manufacturers. Our professional production team and strict quality inspection system can provide customers with safe and high-quality products. At the same time, we put the needs of customers first, which can improve the thoughtful one-stop service and effective solution technology. If you are interested in our automated anti-adhesive non-woven equipment, please contact us immediately!