Discharge nozzle for nano fiber manufacturing device and nano fiber manufacturing device provided with discharge nozzle

Abstract

A problem to be solved by the present invention is to provide a discharge nozzle for nanofiber production apparatuses that when producing nanofibers, allows for an easy change to a specification of fibers to be produced, such as the diameter, and thus an improvement in apparatus variety or workability and a nanofiber production apparatus including the discharge nozzle. A discharge nozzle 2 mounted on a nanofiber production apparatus 1 includes a division-type nozzle unit 6 that is provided with a molten/dissolved resin outlet 9 from which a molten or dissolved resin is discharged, a molten/dissolved resin flow path 10 through which the molten or dissolved resin is sent to the molten/dissolved resin outlet 9, a hot blast outlet 11 from which a hot blast is discharged, and a hot blast flow path 12 through which the hot blast is sent to the hot blast outlet 11. The division-type nozzle unit 6 can be divided into first to fourth nozzle units 6a to 6d.

1 . A discharge nozzle mounted on a nanofiber production apparatus that draws a molten or dissolved resin discharged from a molten/dissolved resin outlet into fine fibers by discharging the molten/dissolved resin such that the molten or dissolved resin is guided by a hot blast discharged from a hot blast outlet, the discharge nozzle comprising
 a division-type nozzle unit that is provided with a molten/dissolved resin outlet and a hot blast outlet and can be divided into a plurality of units.   
     
     
         2 . The discharge nozzle mounted on the nanofiber production apparatus according to  claim 1 , wherein the division-type nozzle unit can be divided such that at least one of the molten/dissolved resin flow path and the hot blast flow path is divided into a plurality of flow paths. 
     
     
         3 . The discharge nozzle mounted on the nanofiber production apparatus according to  claim 1 , wherein a division joint of the division-type nozzle unit is an airtight sealing plate. 
     
     
         4 . The discharge nozzle mounted on the nanofiber production apparatus according to  claim 1 , wherein the division-type nozzle unit comprises a first nozzle unit serving as a molten/dissolved resin inflow unit, a second nozzle unit serving as a hot blast inflow unit, a third nozzle unit serving as a resin/hot blast introduction unit, and a fourth nozzle unit serving as a discharge unit. 
     
     
         5 . A discharge nozzle mounted on a nanofiber production apparatus that draws a molten or dissolved resin discharged from a molten/dissolved resin outlet into fine fibers by discharging the molten/dissolved resin such that the molten or dissolved resin is guided by a hot blast discharged from a hot blast outlet, the discharge nozzle comprising
 a division-type nozzle unit that can be divided into a plurality of units, wherein   the hot blast outlet is formed as a single rectangular slit-shaped hot blast outlet on a front wall surface of the division-type nozzle unit, and   the molten/dissolved resin outlet comprises a plurality of aligned molten/dissolved resin outlets formed on the front wall surface of the division-type nozzle unit and disposed along a length direction of the hot blast outlet.   
     
     
         6 . A nanofiber production apparatus that draws a molten or dissolved resin discharged from a molten/dissolved resin outlet into fine fibers by discharging the molten/dissolved resin such that the molten or dissolved resin is guided by a hot blast discharged from a hot blast outlet, the nanofiber production apparatus comprising
 a discharge nozzle comprising a division-type nozzle unit that can be divided into a plurality of units, wherein   the hot blast outlet is formed as a single rectangular slit-shaped hot blast outlet on a front wall surface of the division-type nozzle unit, and   the molten/dissolved resin outlet comprises a plurality of aligned molten/dissolved resin outlets formed on the front wall surface of the division-type nozzle unit and disposed along a length direction of the hot blast outlet.