Using melt blown extruder screw has been used to produc […]
The melt blown extrusion process uses hot air to blow a molten thermoplastic resin from the extruder die tip onto a take-up screen. The air heater must be resistant to oxidation of high-temperature air. This type of production line can be able to produce non-woven fabric with different widths. It also has auxiliary machines that can be configured according to different user requirements.
A melt-blown line consists of an extruder, a melt pump, a resin feed system, a melt blown die assembly, and a three-dimensional receiving device. Each of the components must be specially designed for the specific polymer raw material. The most commonly used chip materials are polypropylene and polyethylene. They have high levels of polymerization.
To produce non-woven fabric, the raw material used is usually PP. The PP raw material is mixed with a lubricant called Erucil amide, free radical initiator DCPD, and antioxidant. The raw material is then chip-dried. The PP melt-blown raw material can also be mixed with masterbatch or whitening agent. The PP melt-blown non-woven production line is stable, reliable, and dust-proof. It has a good anti-wrinkle effect and a fluffy structure. Its running performance is also stable. It has been used in many countries. Moreover, its price is known as the Pandemic Economy Phenomenon.
For non-woven fabric, the melt blown process uses a high-velocity hot-air stream. This stream can reach up to 1000 ft/sec. It forces the polymer to form microfibers. The polymer can be drawn down to 0.00001 to 0.000015 inches in diameter. The diameter of microfibers is determined by the type of polymer and its melting point. In addition, the diameter of the fiber can be reduced down to 0.1 microns.
The melt-blown extrusion process also requires high discharge pressure. A melt pump can be used to improve its performance. Moreover, auxiliary machines can be used to produce different widths.
The most widely used chip material in meltblown technology is polypropylene. This is because of its excellent fluidity. It has low ash content and stable melt flow rate.
