Production Process And Influencing Factors Of Meltblown Nonwoven Fabric

Meltblown Nonwoven Fabric is made by melting polymer masterbatch or slices in a screw extruder, forming fiber shapes by high - pressure spraying, and stretching fine short fibers by high - speed hot air. It is made by bonding each other on the mesh belt to form a fiber web.

The process parameters that affect the structure and properties of Melt Blown Nonwoven fabric include extrusion volume, cross - air temperature, mesh belt speed, take - up distance, spinneret height and gap distance. In the rough adjustment of product quality, the extrusion volume and slit width of the metering pump are the main influencing factors. In general, the smaller the extrusion volume, the smaller the slit width and the finer the fibers. Parameters such as crosswind temperature, speed of receiving mesh belt, and receiving distance of fiber mesh are the main influencing factors for fine - tuning product quality. Generally speaking, the higher the crosswind temperature, the finer the fibers; the slower the mesh belt speed, the greater the weight and thickness of the product, and the smaller the aperture of the fiber mesh, but the product feels very hard. The smaller the receiving distance, the denser the fiber network, but the fiber becomes thicker. Therefore, in actual production, the influence of various process parameters should be balanced and considered before producing qualified products.

Meltblown Nonwoven has the advantages of short process flow, high production efficiency, short time from feeding to product output, saving time and effort, and low cost. It has become the main production method for nonwovens. Currently, melt blown nonwoven is mainly made of polypropylene. Meltblown Nonwoven Polypropylene has small fiber diameter, large specific surface area and high porosity. It has good filtration performance after being left to stand under high pressure. Therefore, it is mainly used in fields such as air filtration, battery separators, oil absorbing materials and thermal insulation flocs.