The main parameters in the production of melt-blown non-woven fabrics are the airflow (air volume) in the draft channel of the melt-blown equipment and the passive pressure (wind pressure) of the system.
In actual operation, the type of air-source equipment (air compressor, Roots blower, etc.) should be selected according to different needs, such as the melt index of pp material, the modulus of the spinneret and the number of groups, the operating speed of the production line, and the width Other parameters require the calculation of air volume and air pressure demand.
Generally, the air volume of the air source equipment is between 4.0-60m³/min, and the power demand is between 11kw-200kw, depending on the output of the melt blown cloth production line. The following is a detailed analysis of whether the meltblown non-woven fabric production line should be equipped with an air compressor or a Roots blower.
The power requirements of Roots blowers for the meltblown non-woven fabric production line range from 11kw-90kw, the actual passive pressure is generally around 58.8kpa, and the airflow requirement of the drafting channel is between 4.0-60m³/min. Manufacturers of meltblown equipment can select Roots blowers according to their actual needs for customized equipment.
1. Air compressors or Roots blowers are the air source equipment that provides high-pressure hot airflow during the manufacturing process of melt blown cloth, but the air compressor relies on the piston to compress air in a closed cavity to output airflow. Lubricating oil should be used for lubrication, or it will not be burned by overheating.
Then the oil is filtered after the gas comes out, but only most of the oil mist can be filtered. A small amount of oil mist will still be sprayed out with the air, and the molten polymer will form a melt blown cloth. There will be oil on the melt blown cloth.
In addition, the pressure of the air compressor is above 100KPA-10000KPA, which is too high for melt blown cloth and needs to be used at reduced pressure.
2. The Roots blower works like this. It uses the tiny gap between the casing and the impeller to force the air out. No lubricating oil is used in the cavity, so the output air does not contain oil, and the sprayed melt blown cloth does not contain impurities. The pressure range of the Roots blower is 10-100KPA, and generally, the best melt blown cloth pressure requirement is 58.8KPA, because it is just suitable for melt blown machine.
Moreover, the efficiency of an air compressor is much higher than that of an air compressor under low-pressure conditions below 100KPA, and its simple internal structure is also easier to maintain than an air compressor.
As the standards for melt blown cloth become more and more stringent, many shortcomings of air compressors have begun to appear. More and more melt blown cloth production lines have been replaced by air compressors with Roots blowers. If you want to know more about the meltblown nonwoven production line after reading the above, you can get a comprehensive solution by contacting AZX.
As an experienced non-woven machine manufacturer, AZX has excellent R&D technology and exquisite manufacturing technology and enjoys a high reputation in the industry. In order to ensure the quality of the equipment, we are also equipped with a professional quality inspection system and a comprehensive management team, which can control the quality of the products in all directions. At the same time, we will provide a thoughtful one-stop service according to the diverse needs of users. If you want to buy our meltblown non-woven equipment, please contact us immediately!