The production capacity of meltblown fabric equipment is also closely related to the operating speed of the machine, and the speed determines the production efficiency of the equipment, thereby affecting the quality and production efficiency of the products.
Temperature
Temperature is one of the important conditions for producing plastic products. Temperature control affects the extrusion volume and quality of the extruded material of the meltblown fabric equipment.
As the screw speed, extrusion pressure, external heating conditions, and temperature changes of the surrounding medium of the meltblown fabric equipment, the temperature of the material in the cylinder will also change accordingly. Therefore, plastic can always be heated in meltblown. According to the required fabric, the equipment plays a plasticizing role and is evenly transported to the mold. Therefore, correct temperature control is very important.
Low temperature extrusion has many advantages, as it is easy to maintain the shape of the extruded material. Because polymers have less thermal energy, the cooling cycle or cooling time is shortened, and the degradation of polymers is reduced, especially for thermosensitive plastics. However, when the temperature is too low, melt fracture may occur, and poor molding can lead to poor product appearance or complete uselessness, and reduce extrusion volume.
The relationship between the temperature and physical properties of extruded materials and various aspects of the product is complex. According to the physical properties of polymers and the performance requirements of equipment and products, using appropriate temperature is one of the important conditions for obtaining qualified products.
Pressure
The magnitude of pressure directly affects the output of the meltblown fabric equipment and the output of the product. The machine head is equipped with perforated plates and filter screens, which generate a certain pressure on the material, facilitate its plasticization, and improve product quality. However, an increase in pressure will reduce the extrusion volume and even stop the discharge.
Therefore, in order to achieve a good extrusion process, it is required that the extruded material has a stable flow rate, constant pressure, constant temperature, and uniform extruded material. However, these conditions are not independent. For example, pressure fluctuations will cause flow fluctuations, temperature fluctuations will cause viscosity fluctuations, and viscosity fluctuations will cause pressure and flow fluctuations.
Temperature of the material cylinder
The heat generated by meltblown equipment mainly comes from external heaters, friction between the barrel and screw, friction between materials, and heat generated by material extrusion. Therefore, factors such as the distribution of heaters and the shape, performance, and screw speed of materials are crucial. Choosing the appropriate barrel temperature is crucial in extrusion operations.
The relationship between screw speed and production capacity
The screw speed is directly proportional to the production capacity of the meltblown fabric equipment. When the working capacity of the screw and the barrel is sufficient, it is allowed to use both the main extrusion equipment and the auxiliary extrusion equipment simultaneously. Increasing the screw speed can greatly improve the production capacity of the meltblown fabric equipment. However, the increase in screw speed shortens the residence time of the material in the screw barrel and affects the plasticization of the material. An increase in speed will also increase pressure fluctuations, thereby affecting the quality of the extruded material. Therefore, the increase in screw speed is limited by certain conditions.
For meltblown equipment, speed is competitive. When other performance indicators of the meltblown fabric machinery equipment are similar, the speed determines the production capacity of the enterprise. Therefore, to ensure the production capacity of the meltblown fabric equipment, it is necessary to ensure that the equipment has very good stability performance!
Dongguan Liansheng Non woven Technology Co., Ltd. was established in May 2020. It is a large-scale non-woven fabric production enterprise integrating research and development, production, and sales. It can produce various colors of PP spunbond non-woven fabrics with a width of less than 3.2 meters from 9 grams to 300 grams.
Post time: Mar-19-2025