Melt Blown Layer
Meltblown fabrics are more expensive than spunbond fabrics. Most mask manufacturers produce medical face masks in 3 layers. The first and last layer is spunbond, the middle layer is meltblown. It has a denser fiber structure thanks to its microfiber structure. Microfibers with 0.5 - 5 Micron diameter show higher filtering ability than spunbond material.
It is a micro and nanofiber production method in which a polymer melt is extruded through small nozzles surrounded by high-speed blowing gas. Meltblown fabrics are generally used in areas such as filters, medical masks, sound insulation, industrial cleaning.
Produced from 100% Polypropylene (PP) material as in interlining fabric, meltblown can be manufactured from 10 grams to 500 grams. Similarly, it has UV additive, anti-static, hydrophilic and fire retardant properties. Apart from polypropylene, it also produces thermoplastic polyurethane (TPU) and PBT (polybutylene terephthalate) meltblown fabrics.