Electrospinning nozzle provided with gas ejection means
AssigneeJong-Su PARK
InventorsJong-Su Park, Chae-keun Lim, Woong-jun Hwang, Yong-rae Roh, Chun-su Lee
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Abstract
Disclosed is an electrospinning nozzle including an air ejection unit, in which a plurality of air holes are formed in a circumferential region radially spaced at a certain distance from the hollow needle through which the spinning solution is discharged, and, by generating an air flow that moves straight toward a charged filament jet by a spinning solution by discharging air through the air hole, a filament jet is stably formed at the spinning nozzle tip by preventing the air flow from directly contacting the spinning solution, and the filament jet is controlled so as not to exceed a specific range.
Claims26
An electrospinning nozzle comprising:
- an inner nozzle body into which a spinning solution serving as a first fluid is injected;
- an inner needle unit connected to the inner nozzle body and having a hollow tube-shaped inner needle serving as an outlet of the first fluid;
- an outer nozzle body into which air serving as a second fluid is injected;
- an air ejection unit coupled to a tip of the outer nozzle body and configured to generate a flow of the air serving as the second fluid moving straight against a charged filament by the spinning solution discharged from the inner needle;
- and
- a high voltage applying unit connected to the inner nozzle body,
- wherein the air ejection unit includes a center hole through which the inner needle penetrates and a plurality of gas ejection ports radially arranged to surround the center hole to be spaced apart from each other by a predetermined distance.
An electrospinning nozzle comprising:
- an inner nozzle body into which a first fluid is injected;
- an inner needle unit connected to the inner nozzle body and having a hollow tube-shaped inner needle serving as an outlet for the first fluid;
- an outer nozzle body into which a second fluid is injected;
- an outer needle unit connected to the outer nozzle body and having a hollow tube-shaped outer needle serving as an outlet for the second fluid and arranged to coaxially surround the inner needle;
- an outer needle positioning unit configured to adjust a central axis position of the outer needle;
- a gas inlet configured to inject air that is a gas;
- an air ejection unit coupled to a tip of the outer needle positioning unit and configured to generate a flow of the air moving straight against a charged filament by a spinning solution discharged from a double needle, which is formed by the outer needle coaxially surrounding the inner needle;
- and
- a high voltage applying unit connected to the inner nozzle body,
- wherein the air ejection unit includes a center hole through which the double needle penetrates and a plurality of gas ejection ports radially arranged to surround the center hole to be spaced apart from each other by a predetermined distance.
An electrospinning nozzle comprising:
- an inner nozzle body having a first fluid inlet into which a first fluid is injected;
- an inner needle unit connected to the inner nozzle body and having a hollow tube-shaped inner needle serving as an outlet of the first fluid;
- an outer nozzle body having a second fluid inlet into which air as a second fluid is injected;
- a pneumatic control unit body including a needle shaft for controlling and blocking a flow of the first fluid transferred to the inner needle unit and a needle shaft sealing portion for preventing the first fluid from flowing backward and leaking to the upper portion of the needle shaft;
- an air ejection unit connected to a tip of the outer nozzle body to generate a flow of air serving as the second fluid that moves straight against a charged filament by a spinning solution discharged from the inner needle;
- and
- a high voltage applying unit connected to the inner nozzle body,
- wherein the air ejection unit includes a center hole penetrating the inner needle and a plurality of gas ejection ports radially arranged to surround the center hole to be spaced apart from each other by a predetermined distance.
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Dependencies are inferred from the claim text.