During volcanic activity, a fibrous material may be sucked out by strong winds from molten basaltic magma called Pele's hair. The same phenomenon applies to melt spinning of polymers. The earliest melt spinning research was attempted by the US Navy in the 1950s to produce fine filter material for radiation measurement on drones. Exxon later developed the first industrial process based on the melt spinning principle with high throughput levels.
Melt spinning is a traditional method of manufacturing micro and nano fibers, in which a polymer melt is extruded through small nozzles surrounded by high-speed air. Randomly deposited fibers form nonwoven sheet products suitable for filter, absorbent, clothing, and drug delivery systems. The substantial benefit of melt spinning is simplicity, high unit productivity, and solvent-free operation.
Polypropylene or PP meltblown nonwoven fabric is made of polypropylene, with fiber diameter ranging from 1 to 5 microns, with excellent oil absorption, thermal insulation, filtration, shielding ability, and performance. PP meltblown non-woven fabric can obtain various anti-wrinkle and fluffy structures and gaps. Due to the filtering performance of ultrafine fibers and unique capillary structure, it has applications in various filtering industries, such as air filters, masks, N95 masks, water, and others. Due to its complex fiber structure, it increases the surface area and the number of fibers per unit area, giving it exquisite quality.
Meltblown nonwoven fabric is used in the healthcare industry, meltblown non-woven fabric is used as medical fabric/workwear, such as coveralls, EPP suits, coveralls, surgical gowns, diapers, disinfectant wipes/wet wipes/napkins, etc. Meltblown non-woven fabric is used in home decoration or lining fabrics, meltblown non-woven fabric is used as bed sheets, tablecloths, wall fabrics, lining fabrics, etc. Meltblown non-woven fabric is used in clothing, such as irregular cotton, cotton batting, adhesive lining, shoe lining, leather clothing, and so on.
Meltblown non-woven fabric is used in agricultural fabrics, such as irrigation fabrics, seedling fabrics, crop protection fabrics, thermal insulation curtains, etc. Meltblown non-woven fabric is used in industrial fabrics, such as filter materials, geotextiles, cement packaging bags, insulation materials, covering fabrics, etc. Meltblown non-woven fabric is used in other miscellaneous uses, such as tea bags, cigarette filter tips, space cotton, insulation blankets, oilcloths, etc.
Meltblown non-woven fabric is used in medical/N95 masks, and the meltblown fabric is known for its key elements as N95 masks and surgical masks, which typically have a multi-layered structure called the SMS structure. The simple meaning is S-the first layer, M-the middle meltblown layer, S-the outermost spunbond layer.