Electronic spinning apparatus
View Patent ↗An electrospinning apparatus including a spinning dope main tank, a metering pump, a nozzle block, a collector positioned at the lower end of the nozzle block for collecting spun fibers, a voltage generator, a plurality of units for transmitting a voltage generated by the voltage generator to the nozzle block and the collector, said electrospinning apparatus containing a spinning dope drop device positioned between the metering pump and the nozzle block, the spinning dope drove device having (i) a sealed cylindrical shape, (ii) a spinning dope inducing tube and a gas inletting tube for receiving gas through its lower end and having its gas inletting part connected to a filter aligned side-by-side at the upper portion of the spinning dope drop device, (iii) a spinning dope discharge tube extending from the lower portion of the spinning dope drop device and (iv) a hollow unit for dropping the spinning dope from the spinning dope inducing tube formed at the middle portion of the spinning dope drop device.
1. An electrospinning apparatus comprising a spinning dope main tank, a metering pump, a nozzle block, a collector, positioned at the lower end of the nozzle block for collecting spun fibers, a voltage generator, a plurality of units for transmitting a voltage generated by the voltage generator to the nozzle block and the collector, said electrospinning apparatus containing
a spinning dope drop device positioned between the metering pump and the nozzle block, the spinning dope drove device having
(i) a sealed cylindrical shape,
(ii) a spinning dope inducing tube and a gas inletting tube for receiving gas through its lower end and having its gas inletting part connected to a filter aligned side-by-side at the upper portion of the spinning dope drop device,
(iii) a spinning dope discharge tube extending from the lower portion of the spinning dope drop device and
(iv) a hollow unit for dropping the spinning dope from the spinning dope inducing tube formed at the middle portion of the spinning dope drop device.
2. The apparatus according to claim 1 , wherein the nozzles are aligned in block units having at lest two pins or injection needles.
3. The apparatus according to claim 1 , wherein a number of pins of one nozzle block ranges from 2 to 100,000.
4. The apparatus according to claim 1 , wherein the nozzle pins have circular or different shaped sections.
5. The apparatus according to claim 1 , wherein the nozzle pins are aligned in a circumference shape, a lattice shape or a row line.
6. A method for the preparation of a non-woven fabric by electrospinning a thermoplastic or thermosetting resin spinning dope on a collector from a nozzle block and consecutively embossing a spun web, which comprises
passing a spinning dope from a spinning dope main tank through a metering pump and quantitatively supplied to a spinning dope drop device where the spinning dope is dropped; the spinning dope is then provided supplied to the nozzle block provided with a voltage, whereby the nozzle block discharges the spinning dope onto the collector, said spinning dope drop device having
(i) a sealed cylindrical shape,
(ii) a spinning dope inducing tube and a gas inletting tube for receiving gas through its lower end and having its gas inletting part connected to a filter aligned side by side at the upper portion of the spinning dope drop device,
(iii) a spinning dope discharge tube extending from the lower portion of the spinning dope drop device, and
(iv) a hollow unit for dropping the spinning dope from the spinning dope inducing tube formed at the middle portion of the spinning dope drop device.
7. The method according to claim 6 , wherein the nozzles are aligned in block units having at least two pins.
8. The method according to claim 6 , wherein air or an inert gas is introduced into the spinning dope drop device.
9. The method according to claim 6 , wherein the spinning dope is a melt or a solution.
10. The method according to claim 6 , wherein an endless belt is used as the collector.