Electrospinning apparatus

Abstract

The present invention relates to an electrospinning apparatus, and the purpose of the present invention is to provide an electrospinning apparatus capable of producing nanofiber having various ingredients and thicknesses by controlling the temperature of at least one solution discharged from nozzles mounted on the tubular bodies of a nozzle block and thus controlling the viscosity of the solution which is electrospun; producing nanofiber having uniform quality without applying a density difference and a voltage difference by disposing the front end portions of the nozzles in a flare shape; and mass-producing nanofiber at a low cost as well as reducing the amount of the solution used by removing an overflow prevention system and using a metering pump alone or by using the metering pump and the overflow prevention system alternatively or in a hybrid manner.

1 . An electrospinning apparatus manufacturing nanofiber by electrospinning method, comprising:
 a nozzle block in which a plurality of nozzles discharging polymer solution is arranged, a collector installed and placed separately from the nozzle block and integrating nanofiber, a voltage generating device applying high voltage between the collector and the nozzle, an elongated sheet conveyed between the collector and the nozzle,   wherein the nozzle block comprises a plurality of tubular bodies which connected to a plurality of nozzles, and a heat line or a pipe connected to temperature adjusting device inside each tubular body to control temperature of polymer solution.   
     
     
         2 . The electrospinning apparatus of  claim 1 , wherein each tubular body is equipped on the nozzle block detachable, the heat line provided in each of tubular body is formed in coil form or linear form, and the pipe in each of tubular body is formed in U form. 
     
     
         3 . The electrospinning apparatus of  claim 1 , wherein electrospinning method of manufacturing nanofiber by discharging polymer solution from a plurality of nozzles connected to tubular body is one among bottom-up type, top-down type, or parallel type. 
     
     
         4 . An electrospinning apparatus manufacturing nanofiber by electrospinning method, comprising:
 a nozzle block in which a plurality of nozzles discharging two or more polymer solution is arranged, a collector installed and placed separately from the nozzle block and integrating nanofiber, a voltage generating device applying high voltage between the collector and the nozzle, an elongated sheet conveyed between the collector and the nozzle,   wherein the nozzle block comprises a plurality of tubular bodies, and a heat line or a pipe connected to temperature adjusting device inside each tubular body to control temperature of polymer solution,   
       further comprising two or more polymer solution storage tanks for storing polymer solution with different component separately, and polymer solution flowing pipe for flowing polymer solution in each polymer solution storage tank. 
     
     
         5 . The electrospinning apparatus of  claim 4 , wherein the polymer solution is one or more selected from group consisting of polylactic acid (PLA), polypropylene (PP), polyvinyl acetate (PVAc), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene napthalate (PEN), polyamide (PA), polyurethane (PU), polyvinyl alcohol (PVA), polyetherimide (PEI), polycaprolactone (PCL), poly lactic-co-glycolic acid (PLGA), silk, cellulose, and chitosan. 
     
     
         6 . The electrospinning apparatus of  claim 4 , wherein each tubular body is equipped on the nozzle block detachable, the heat line provided in each of tubular body is formed in coil form or linear form, and the pipe in each of tubular body is formed in U form. 
     
     
         7 . The electrospinning apparatus of  claim 4 , wherein electrospinning method of manufacturing nanofiber by discharging polymer solution from a plurality of nozzles connected to tubular body is one among bottom-up type, top-down type, or parallel type. 
     
     
         8 . An electrospinning apparatus manufacturing nanofiber by electrospinning method, comprising:
 a nozzle block, in which a plurality of nozzles discharging polymer solution is arranged, comprising a nozzle plate arranged multi-pipe-type nozzle in sheath/core form, two or more spinning solution storage plate located bottom of the nozzle plate, and a plurality of nozzles, which discharge polymer solution, connected to nozzle for overflow removal; a collector installed and placed separately from the nozzle block and integrating nanofiber; a voltage generating device applying high voltage between the collector and the nozzle; an elongated sheet conveyed between the collector and the nozzle;   wherein front end portion of the nozzle connected to the nozzle block is in a flare shape.   
     
     
         9 . The electrospinning apparatus of  claim 8 , wherein the front end portion of the nozzle is in flare shape and makes 5 degrees to 30 degrees with a cylinder axis of the nozzle, the number of nozzle switch flare-shaped front end portion is 10% to 30% of the total nozzles provided in the nozzle block. 
     
     
         10 . The electrospinning apparatus of  claim 8 , wherein the electrospinning method is one among bottom-up electrospinning method which a nozzle block is located a collector bottom, top-down electrospinning method which a nozzle block is located a collector top, and parallel electrospinning method which a nozzle block and a collector is located parallel or in similar angle. 
     
     
         11 . An electrospinning apparatus manufacturing nanofiber by electrospinning method, comprising:
 a nozzle block in which a plurality of nozzles discharging polymer solution is arranged, a collector installed and placed separately from the nozzle block and integrating nanofiber, a voltage generating device applying high voltage between the collector and the nozzle, a spinning solution main tank storing polymer solution, and a middle tank storing polymer solution supplied from the spinning solution main tank,   further comprising a metering pump for measuring discharging amount from the nozzle.   
     
     
         12 . An electrospinning apparatus manufacturing nanofiber by electrospinning, comprising:
 a nozzle block in which a plurality of nozzles discharging polymer solution is arranged, a collector installed and placed separately from the nozzle block and integrates nanofiber, a voltage generating device applying high voltage between the collector and the nozzle, a spinning solution main tank storing polymer solution, a recycling tank recycling and storing polymer solution, and a middle tank storing polymer solution supplied from the spinning solution main tank,   further comprising an overflow prevention system for preventing polymer solution from overflow, and a metering pump for measuring discharging amount from the nozzle,   wherein the overflow prevention system and the metering pump are used alternatively or in hybrid type.   
     
     
         13 . The electrospinning apparatus of  claim 12 , wherein the overflow prevention system comprising a concentration correction device to correct polymer solution concentration. 
     
     
         14 . The electrospinning apparatus of  claim 2 , wherein electrospinning method of manufacturing nanofiber by discharging polymer solution from a plurality of nozzles connected to tubular body is one among bottom-up type, top-down type, or parallel type. 
     
     
         15 . The electrospinning apparatus of  claim 5 , wherein electrospinning method of manufacturing nanofiber by discharging polymer solution from a plurality of nozzles connected to tubular body is one among bottom-up type, top-down type, or parallel type. 
     
     
         16 . The electrospinning apparatus of  claim 6 , wherein electrospinning method of manufacturing nanofiber by discharging polymer solution from a plurality of nozzles connected to tubular body is one among bottom-up type, top-down type, or parallel type.