En
What are you looking for?
The melt blowing nonwovens technology is an advanced material preparation technique. Its core lies in utilizing high-speed hot air to efficiently draw the fine streams of polymer melt extruded from the spinneret holes of the die. In this process, the polymer melt is precisely controlled and extruded under specific temperature and pressure conditions to form continuous fine filaments. Subsequently, these fine streams are subjected to intense stretching and refinement under the strong influence of high-speed hot air, transforming them into ultrafine fibers. These ultrafine fibers are orderly collected and deposited on a condensing screen or drum, eventually forming a structurally stable, high-performance nonwoven fabric material due to the physical entanglement and melt adhesion between fibers.
The melt blowing equipment of can be classified into horizontal and vertical types based on their installation mode.
Horizontal type
Usually occupies a larger area but is relatively simple to operate and maintain.
Vertical type
The equipment is more compact and is suitable for use in space-limited scenarios.
Introduction to the melt blowing line
First, selected polypropylene chips are fed into the loader. Subsequently, through the high temperature and high pressure of the screw extruder, they are melted to achieve a state suitable for spinning.
Next, the molten polymer is precisely measured by a metering pump and fed into the melt blowing die assembly. Inside the die, the polymer melt is further refined and extruded into fibrous form.
At the same time, compressed air produced by an air compressor is heated by an air heater, forming a high-speed hot air stream. This hot air stream impacts and stretches the polymer fibers extruded from the die at very high speeds, rapidly refining and elongating them into extremely fine short fibers. These short fibers are carried by the high-speed hot air and adsorbed onto the condensing screen to form a fiber web. Since the fibers can maintain a relatively high temperature after web formation, a certain degree of melt adhesion occurs between the fibers, thereby enhancing the strength and stability of the fiber web. The blow room machinery efficiently prepares natural fibers for spinning, while the melt blowing equipment is essential for producing fine synthetic fibers used in nonwoven fabrics.
Finally, the melt blowing nonwoven fabric that has undergone cooling and shaping treatment is fed into the winding device for coiling and packaging, facilitating subsequent processing and use.
The melt blowing line process can be summarized as:
Polymer preparation → Melt extrusion → Metering pump → melt blowing die assembly → Melt stream stretching → Cooling → Receiving device
Melt blowing equipment
Throughout the entire melt blowing line process, the main equipment involved includes the loader, screw extruder, metering pump, melt blowing die assembly, air compressor, air heater, receiving device, and winding device. These pieces of equipment work in coordination to complete the entire production process from polymer raw material to melt blowing nonwoven fabric.
Additionally, to ensure smooth production and stable product quality, some auxiliary production equipment is required, such as a die cleaning furnace for periodically cleaning residues within the die to prevent clogging; and a static electricity applicator used to apply electrostatic charges during fiber formation to enhance the adhesive strength between fibers and the stability of the fiber web.
