Since the new crown epidemic, masks have once become one of the most important materials in the world. Generally, protective masks have a three-layer structure, and the outer layer has an anti-droplet design (spunbonded non-woven fabric) + middle layer filtration (meltblown non-woven fabric) + inner moisture absorption (spunbonded non-woven fabric). Among them, the meltblown cloth, which is the “heart of the mask”, has high requirements for the plant environment due to the huge investment in the production line, the high technical content, the complicated equipment installation, and the environment.
Melt blown cloth is the core material of the mask, that is, the filter layer in the middle of the mask, which can filter bacteria and prevent the spread of germs. The meltblown cloth filter material is randomly distributed and bonded together by polypropylene microfibers. The appearance is white, smooth and soft. The fiber diameter ranges from 0.5 to 10 microns, and the fiber diameter is about one-thirtieth of the hair. A membrane made of many criss-cross fibers stacked in random directions. The random distribution of fibers provides more opportunities for thermal bonding between fibers, so that the melt blown gas filter material has a larger specific surface area and a higher porosity. . After high-pressure electret filtration efficiency, the product has the characteristics of low resistance, high efficiency and high dust capacity.
In addition to mask manufacturing, melt blown cloth is also widely used in medical and health (surgical gowns, protective clothing, disinfection wraps, diapers, sanitary napkins, etc.), home decoration (wall coverings, table cloths, bed sheets, quilts, etc.), clothing industries (Lining, fusible interlining, wadding, shaped cotton, etc.), industrial cloth (filter material, insulating material, geotextile, newspaper covering cloth, etc.), agricultural cloth (crop protection cloth, seedling cloth, irrigation cloth, heat preservation Curtains, etc.), as well as space cotton, thermal insulation materials, linoleum, cigarette filters, tea bags, etc.
