This article mainly introduces relevant information about air electric heaters in meltblown fabric equipment (meltblown nonwoven machine, meltblown fabric machine).The meltblown process flow is: polymer preparation→melt extrusion→metering pump→meltblown die assembly→melt filament stretching→cooling→receiving device. Main equipment for meltblown: feeding machine, screw extruder, metering pump, meltblown die assembly, air compressor,air electric heater, receiving device, winding device. For producing polyester and other raw materials, a chip drying device is also needed. Auxiliary equipment mainly includes die cleaning oven, electrostatic application device, and spray device.
Air electric heaterThe meltblown process requires a large amount of hot air. The compressed air output from the air compressor is dehumidified and filtered, then sent to the air heater for heating, and then to the meltblown die assembly. The air heater shell and heating elements must resist oxidation from high-temperature air, so stainless steel must be used.
The following is the selection of air electric heaters for meltblown fabric equipment:
| Name | Duct-type air electric heater (circulation electric heater) | Air-duct-type air electric heater |
| I.Overview: | ||
| Medium | Air | Air |
| Pressure | Heated gas pressure≥0.3Kg/cm2. | Heated gas pressure≤0.3Kg/cm2. |
| Outlet temperature | ≤850℃. | Low temperature type≤
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