Special extruder for meltblown fabric

Special extruder for meltblown fabric

1、 Application of melt blown fabric extruder:
Special extruder for meltblown fabric, meltblown fabric is a renamed PP material with a melt index of 1500 and very good fluidity, so it can spray silk and is mainly suitable for the production of meltblown fabric.
The melt blown process is a type of polymer extrusion nonwoven process, typically produced using a single screw production line. Melt blown method is the use of high-speed hot air to stretch the fine stream of polymer melt extruded from the nozzle holes of the die, thereby forming ultrafine fibers and condensing them on a mesh curtain or drum. In theory, all thermoplastic polymer particles can be used in melt blown processes. Among them, PP polypropylene is the most commonly used particle in the melt blown process. In addition, commonly used melt blown processes include polyester, polyethylene, PBT, EMA, and so on. The type of polymer determines its melting point and rheological properties, as well as the corresponding melt spraying process. Moisture absorbing materials such as polyester ABS, PC, etc. will absorb water and hydrolyze, so a drying hopper must be used. Polyolefins such as PE and PP are non hygroscopic plastics, and there is no need to use a drying hopper when the product itself is not affected by moisture.
Nowadays, PP (polypropylene) high melting point melt blown fabric, as the filtering core layer of masks, has become an extremely scarce material during the epidemic. Chaojie Plastic Machinery relies on more than 20 years of experience in the research and manufacturing of extrusion equipment. At the beginning of the year, the production and research department, molds, suppliers, and other forces were gathered to develop a PP plastic high melt finger melt blown non-woven fabric production line. Nowadays, there are various models such as SJ-45, SJ-50, SJ-65, SJ-90, etc. to cope with the production of melt blown fabrics with different widths.
The meltblown process is mainly divided into three parts: melt extrusion, non-woven fabric, and on-site processing. The Chaojie plastic machine meltblown fabric production line is equipped with a Japanese imported Omron temperature control meter, with a temperature control error of plus or minus 1 ℃. The screw is selected from the supplier's special high melting point polypropylene meltblown screw, equipped with a filtering and stabilizing device. Ensure precise extrusion of the melt to ensure that customers produce qualified and compliant products.
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2、 Main performance and specifications of melt blown fabric special extruder
Melt blown fabric 65 extruder:
Special screw length to diameter ratio for meltblown fabric: 30:1 or 32:1
Heating method: electric heating/extrusion
Specialized extruder for meltblown fabric voltage: 380 volts
Special extruder motor power for meltblown fabric: 22kw with 22kw meltblown fabric dedicated frequency converter
Integrated electrical control box for melt blown fabric extruder:
3、 Features of melt blown fabric extruder:
1. Adopting Guomao extruder reducer, with stable quality and long service life.
2. High quality Australian brand variable frequency motor for electric motors.
3. The electrical control system is equipped with a user-friendly operation control system by engineers for extruder customers according to their actual situation.
4. The single screw extruder has a simple design and is inexpensive.

4、 Structure description of melt blown fabric special extruder:
Melt blown nonwoven fabric was first successfully developed in the United States in the 1950s, and China also conducted research in the early 1960s. It is a high-tech product made by directly spinning high melt index polypropylene slices into fabric. At present, the annual production in the United States is about 150000 tons, while the annual production in China is 5000 tons.
The production process of meltblown nonwoven fabric is as follows: polypropylene slices (FR400-1200) are melted by a screw extruder, and then sprayed into fibrous form through a spinning hole. Under the high-speed (13000m/min) hot air flow, they are strongly stretched to form extremely fine short fibers. These short fibers are adsorbed on the mesh curtain, and because the fibers can still maintain a high temperature after agglomeration into a mesh, they adhere to each other to form meltblown nonwoven fabric, which is finally rolled and packaged.
The composition of melt blown nonwoven fabric includes: 1. screw extruder; 2. Metering pump; 3. Melt spraying device; 4. Receiving network; 5. Winding device; 6. Feeding device.
The equipment for the continuous production line of melt blown non-woven fabric is about 6m high, 5m wide, and 20m long. The production equipment for melt blown fabric is a melt blown fabric extruder: the screw diameter is generally 100-120mm, and the length/diameter ratio is 30, which aims to melt the slices