Nsalu yopangidwa ndi spunlace yoyenera kusefedwa kwamafuta a injini nthawi zambiri imatenga zinthu zosagwirizana ndi mafuta monga poliyesitala (PET), yolemera magalamu 60-120 pa lalikulu mita, makulidwe a 0.3-0.8mm, ndi pore kukula kwa ma microns 10-30, kuti azitha kusefera bwino komanso kutulutsa mpweya.
Mtundu, kumverera ndi zakuthupi zitha kusinthidwa.
