The process of melt-blown non-woven fabrics: polymer feeding---melt extrusion---fiber formation---fiber cooling---netting---reinforcement into cloth. In order to spin nanofibers, the spinneret holes are much thinner than those on ordinary meltblown equipment. I can use spinnerets as small as 0.0635 mm (63.5 microns) or 0.0025 inches, and the spinnerets of the modular structure can be combined Into a total width of more than 3 meters. The melt-blown fibers thus spun were approximately 500 nanometers in diameter. The thinnest single fiber diameter can reach 200 nanometers.

Due to the small nozzle holes of the melt-blown equipment for spinning nanofibers, if no measures are taken, the output will be greatly reduced. Therefore, NTI adopts the method of increasing the number of nozzle holes, and each spinneret has 3 or more rows of nozzles hole. Combining many unit components (depending on the width) can greatly increase the output during spinning. The actual situation is that when 63.5-micron holes are used, the number of holes per spinneret in a single row is 2880. If three rows are used, the number of holes per spinneret can reach 8640 holes, so that its output can be compared with spinning It is equivalent to ordinary melt-blown fibers.

Since thin spinnerets with high-density holes are expensive and easily broken (cracked by heat under high pressure), various companies have developed new bonding technologies to enhance the fastness of spinnerets so that they are not damaged due to Leakage under high pressure.

Nano-melt-blown fibers can be used as filter media, which can significantly improve filtration efficiency. There are also data showing that due to the finer fibers in nano-scale melt-blown nonwovens, lighter weight melt-blown nonwovens can be combined with spun-bond, and can still withstand the same water head pressure, while the SMS products made of it can Reduce the proportion of melt-blown fibers.

JIASHAN HH Nonwovens Machinery CO., Ltd not only has Nonwoven Spunmelt Machine but also PP Nonwoven Fabric Machinery and other products, please check our official website.