| 摘要 |
PURPOSE:To obtain a method for stably producing polyurethane melt blown nonwoven fabric suitable as a material for various stretchable parts such as working gloves, masks and paper diapers and base fabric for fomentation, etc. CONSTITUTION:This method for producing (polyurethane melt blown nonwoven fabric is to use a nozzle in which an orifice is housed in a flat part outwardly protruding from the ends of lips and regulate the melt viscosity of the polyurethane to >=200 to <=2000 P in a method for discharging the polyurethane from the nozzle having the flat part in the nozzle tip and the orifice in the flat part, attenuating and converting the polyurethane into fiber with a gas at a high temperature and speed blown from a pair of air lips near the nozzle. |
