The processing process of Meltblown Non Woven Fabric typically involves the following steps:
1. Polymer Extrusion: The process begins with the extrusion of a polymer resin, usually polypropylene, through a spinneret to form fine fibers. These fibers are extremely thin, typically in the range of micrometers.
2. Fiber Stretching: After extrusion, the fibers are stretched using hot air or other mechanical means. This stretching process helps to orient the fibers and reduce their diameter further.
3. Fiber Cooling: The stretched fibers are then rapidly cooled to solidify them into a non-woven web. This cooling process is essential for maintaining the desired properties of the fabric.
4. Web Formation: The cooled fibers are collected onto a moving conveyor belt or drum to form a web. This web serves as the basis for the non-woven fabric.
5. Bonding: The fibers in the web are bonded together to create a cohesive fabric structure. This bonding can be achieved through various methods such as heat, pressure, or chemical bonding agents.
6. Finishing: Once the fabric is bonded, it may undergo additional finishing processes to enhance its properties or appearance. This could include treatments for water resistance, flame retardancy, or dyeing.
Overall, the processing of Meltblown Non Woven Fabric involves a combination of polymer extrusion, fiber stretching, web formation, bonding, and finishing steps to produce a versatile material used in various applications such as filtration, medical textiles, and protective apparel.
