A centrifugal spinning device used for nanofiber/microfiber production

Abstract

The present invention relates to a centrifugal spinning device, which is suitable for industrial production by being connected to high flow-rate polymer solution tanks or an extruder used for nonwoven nano/microfiber production, and which essentially comprises at least one rotary cylindrical spinneret through which the polymer material is injected for fabrication of nonwoven articles, at least two bearings located on both ends of the spinneret which enable it to be fixed on the system and rotate around a specific orbit, at least one motor connection member located on at least one end of the spinneret which provides the connection to the power supply that enables the rotational movement, at least one spinning die located inside the spinneret which enables the polymer materials to be homogenously distributed within the spinneret by means of its sectional area that is in the form of a half die.

1 . A centrifugal spinning device ( 1 ) which is used in production of nano and/or micro fibers for fabrication of nonwoven articles, comprising:
 at least one rotary cylindrical spinneret ( 2 ) through which the polymer material is injected for fabrication of nonwoven articles;   at least two bearings ( 5 ) which are located on both ends of the spinneret ( 2 ) and which enable it to be fixed on the system (S) and rotate around a specific orbit;   at least one motor connection member ( 6 ) which is located on at least one end of the spinneret ( 2 ) and which provides the connection to the power supply that enables the rotational movement;   at least one spinning die ( 7 ) which is located inside the spinneret ( 2 ), and which enables the polymer materials to be homogenously distributed within the spinneret ( 2 ) by means of its sectional area that is in the form of a half die;   at least one inlet orifice ( 8 ), which is located on at least one end of the spinning die ( 7 ), and through which the polymer material is fed into the spinning die ( 7 );   at least one flow channel ( 9 ) which extends from the end of the inlet orifice ( 8 ) and enables transmission of the polymer material along the spinning die ( 7 );   at least one flow section ( 10 ) which is located at the outer part of the flow channel ( 9 ) and in which the polymer material is distributed homogenously between the spinning die ( 7 ) and the spinneret ( 2 ); and   at least one resistor ( 11 ) which enables to maintain the temperature and consistency of the polymer material in the spinning die ( 7 ).   
     
     
         2 . A centrifugal spinning device ( 1 ) according to  claim 1 , wherein the spinneret ( 2 ) is in the form of a perforated cylinder and comprises holes ( 3 ) thereon. 
     
     
         3 . A centrifugal spinning device ( 1 ) according to  claim 1 , wherein the spinneret ( 2 ) has a helical form and comprises slots ( 4 ) thereon. 
     
     
         4 . A centrifugal spinning device ( 1 ) according to  claim 1 , wherein the bearing ( 5 ) connects the spinneret ( 2 ) to the system ( 1 ) from both sides thereof and prevents the spinneret ( 2 ), which is under the effect of centrifuge, from oscillating out of its orbit. 
     
     
         5 . A centrifugal spinning device ( 1 ) according to  claim 2 , wherein the spinning die ( 7 ), by means of its geometry which is symmetrically half of one of a fishtail type, a coat-hanger type and a T-type die, enables the polymer material to be distributed homogenously from the flow channel ( 9 ) towards the flow section ( 10 ) and to flow equally through the holes ( 3 ) or the slots ( 4 ) on the spinneret ( 2 ) and thereby to fabricate a textile product on the conveyor (K). 
     
     
         6 . A centrifugal spinning device ( 1 ) according to  claim 1 , wherein the inlet orifice ( 8 ) enables the polymer material that is in melt form to be fed into the spinning die ( 7 ) by means of an extruder (E). 
     
     
         7 . A centrifugal spinning device ( 1 ) according to  claim 1 , wherein the inlet orifice ( 8 ) enables the polymer material that is in solution form to be fed into the spinning die ( 7 ) by means of a pump. 
     
     
         8 . A centrifugal spinning device ( 1 ) according to  claim 6 , wherein through one end of the spinneret ( 2 ), polymer material is fed via the extruder (E) or a pump, while at the other end, there is provided a motor (M) which enables the rotational movement. 
     
     
         9 . A centrifugal spinning device ( 1 ) according to  claim 1 , wherein the cartridge-type resistor ( 11 ) is mounted on or within the spinning die ( 7 ) in order to provide temperature control. 
     
     
         10 . A centrifugal spinning device ( 9 ) according to  claim 1 , wherein the resistor ( 11 ) is supported by a thermocouple for measurement of the temperature value. 
     
     
         11 . A centrifugal spinning device ( 1 ) according to  claim 3 , wherein the spinning die ( 7 ), by means of its geometry which is symmetrically half of one of a fishtail type, a coat-hanger type or a T-type die, enables the polymer material to be distributed homogenously from the flow channel ( 9 ) towards the flow section ( 10 ) and to flow equally through the holes ( 3 ) or the slots ( 4 ) on the spinneret ( 2 ) and thereby fabricate a textile product on the conveyor (K). 
     
     
         12 . A centrifugal spinning device ( 1 ) according to  claim 7 , wherein through one end of the spinneret ( 2 ), polymer material is fed via an extruder (E) or a pump, while at the other end, there is provided a motor (M) which enables the rotational movement.