Method of manufacturing nano-fibers with excellent fiber formation

• US 20070152378A1
• Filed: 12/30/2003
• Published: 07/05/2007
• Est. Priority Date: 12/30/2003
• Status: Abandoned Application

• Current Assignee: Finetex Technology Global Ltd. (The InsideIQ Building Automation Alliance)
• Original Assignee: Finetex Technology Global Ltd. (The InsideIQ Building Automation Alliance)
• Inventors: Kim, Hak-Yong
• Application Number:
  US10/584,411
• Publication Number:
  US 20070152378A1
• Time in Patent Office: Days
• US Class Current: 264/465
• CPC Class Codes: D01D 5/0076 characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid D01D5/0046 takes precedence
• CPC Class Codes: D01D 7/00 Collecting the newly-spun products D01D5/0076 takes precedence; collecting newly-spun products with the imparting of twist D01H
• CPC Class Codes: D01F 6/70 from polyurethanes

Abstract

The present invention relates to a method for producing nanofibers with an excellent fiber formation property, characterized in that: when nanofibers 3 having a thickness of a nano level are produced by electrostatically spinning a spinning liquid 1 of a polymer resin solution on a collector 8 through a nozzle 2 under a high voltage, a collector 8 with a heater is used as the collector. The present invention can greatly improve the fiber formation property of the nanofibers.

Claims

1. A method for producing nanofibers with an excellent fiber formation property, characterized in that:

when nanofibers 3 having a thickness of a nano level are produced by electrostatically spinning a spinning liquid 1 of a polymer resin solution on a collector 8 through a nozzle 2 under a high voltage, a collector 8 with a heater 6 is used as the collector 8.

2. The method of claim 1, wherein the collector with the heater 6 is a laminate element of a three layer structure which is composed of (i) a supporting element 7 which is a lower end surface, (ii) a conductive plate 5 which is an upper end surface, and (iii) a heater 6 of direct heating type located between the supporting element and the conductive plate.

3. The method of claim 1 or 2, wherein the heater 6 is a heating plate 6a which has hot wires 6b covered with dielectric polymer arranged at constant intervals and a temperature controller 6c attached thereto.

4. The method of claim 1, wherein the heater 6 is a heater indirectly heated by heat transfer medium circulation.

5. The method of claim 1, wherein the collector 8 with the heater 6 is a laminate element of a three layer structure which is composed of (i) a supporting element 7 which is a lower end surface, (ii) a conductive plate 5 which is an upper end surface, and (iii) a heater 6 located between the supporting element and the conductive plate and indirectly heated by heat transfer medium circulation.

6. The method of claim 4 or 5, wherein the heat transfer medium is water, steam or oil.

7. The method of claim 1 or 5, wherein the heater 6 is of such a plate type which has a heat transfer medium circulation tube 6e equipped inside and is connected to a circulation type heat reservoir 6d through a heat transfer medium feed section 6f and a heat transfer medium discharge section 6g.

8. The method of claim 2 or 5, wherein the conductive plate 5 is made from aluminum, copper or stainless steel.

9. The method of claim 2 or 5, wherein the supporting element 7 is made from plastic which is dielectric.

10. The method of claim 3, wherein the dielectric polymer is silicon.

11. The method of claim 1, wherein the electrostatic spinning method is a top-down electrostatic spinning type, a down-top electrostatic spinning type or a horizontal electrostatic spinning type.