MELT-BLOWN NONWOVEN FABRIC, AND PRODUCTION METHOD AND DEVICE FOR SAME

摘要

The present invention addresses the problem of providing: a stable production method using fine fibers to produce a melt-blown nonwoven fabric with very few thick fibers (fused fibers) resulting from the fusion of thermoplastic resin fibers; and a device for same. The present invention pertains to a melt-blown nonwoven fabric characterized by comprising polyolefin fibers and having (i) an average fiber diameter of 2.0 µm max., (ii) a fiber diameter distribution CV value of 60% max., and (iii) 15 or less fused fibers per 100 fibers; a melt-blown nonwoven fabric production method characterized in that molted resin formed into fibers is cooled by supplying cooling air having a temperature of 30°C max. from both side surfaces of the outlet of a slit (31) that emits high-temperature, high-speed air; and a production device for same.