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Polymer Melt Filter for High-Speed Spinning - China Suppliers and Factory Equipment for Enhanced Quality
In the production of spunbonded nonwovens, in order to ensure the smooth progress of the spinning process and reduce the occurrence of broken filaments and dripping, two sets of filtering devices are generally installed.
First Filter (Rough Filter)
- Filters out larger impurities to extend the use time of the second filter device.
- Protects the metering pump and spinning pump from damage.
- Increases the back pressure of the extruder to contribute to the exhaust and plasticization of the material during compression.
Second Filter (Fine Filter)
- Filters fine impurities, crystal points, and other small particles.
- Prevents clogging of the spinneret to ensure smooth spinning.
- Improves the overall quality of the fiber.
Filter Screen Specifications: The shape of the filter screen depends on the shape and size of the spinneret, and is generally a multilayer rectangular filter.
Frequently Asked Questions
Q: Why are two sets of filtering devices installed in spunbonded nonwovens production?
They are installed to ensure the smooth progress of the spinning process and to reduce the occurrence of broken filaments and dripping.
Q: Where is the first (rough) filter installed?
The first filter is installed between the screw extruder and the metering pump.
Q: What is the main function of the rough filter?
Its main function is to filter out larger impurities, protect the metering and spinning pumps, and increase the extruder's back pressure to aid material exhaust and plasticization during compression.
Q: Where is the second (fine) filter located?
The second filter is installed directly within the spinning assembly.
Q: How does the fine filter improve fiber quality?
It filters out fine impurities and crystal points, preventing spinneret clogging and ensuring a smooth spinning process.
Q: What shape is typical for the filter screen?
The shape depends on the shape and size of the spinneret, and it is generally a multilayer rectangular filter.