How to distinguish between spunbond nonwovens and hot air nonwovens? How to distinguish between spunbond nonwovens and hot air nonwovens?The hot air nonwoven is part of the hot air bonding (hot rolling, hot air) nonwoven fabric, and the hot air nonwoven is obtained by heating the hot air on the drying equipment after the fiber is combed, adhesive nonwoven fabric.Spu