Spray Molding Process 

The process of producing PP non-woven fabric by spray molding involves melting polypropylene raw materials at high temperatures, then stretching and refining the melt with a high-speed hot air flow to make the fibers extremely fine. These ultra-fine fibers rapidly cool in the air and randomly deposit on the collection device, forming spray-molded non-woven fabric. The fiber diameter of spray-molded non-woven fabric is very small, generally between 1 and 10 microns, so it has a high filtration efficiency and good adsorption properties, making it an ideal material for making masks, air filters, etc.