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公开(公告)号：US20210156050A1
公开(公告)日：2021-05-27
申请号：US15733762
申请日：2019-04-05
申请人： Jong-Su PARK
发明人： Jong-Su Park , Woong Huh , Youn-Chang Lee , Woong-June Hwang
摘要： An electrospinning apparatus for producing ultrafine fibers according to the present invention comprises: a cylindrical metal guide disposed to surround a hollow tube needle, which receives a charged solution and discharges the charged solution in the form of a filament, wherein a high voltage is applied to the cylindrical metal guide to control droplet stability of the charged solution; and a strip-shaped metal guide including a plurality of strip-shaped metal plates, which extend outward from the cylindrical metal guide and are radially arranged to control the direction of a charged filament, whereby discharge droplets of the charged solution are stably maintained, and the charged filament formed therefrom maintains a constant directionality with respect to a substrate, so that a uniform pattern having ultrafine fibers can. be manufactured on a collection part.
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公开(公告)号：US11458497B2
公开(公告)日：2022-10-04
申请号：US16772436
申请日：2018-12-11
申请人： Jong-Su Park
发明人： Jong-Su Park , Woong Huh , Youn-Chang Lee , Woong-June Hwang
摘要： Disclosed is a coaxial control dual nozzle, which includes an inner nozzle body having an injection port through which a first fluid is injected; an inner needle connected to the inner nozzle body and having a hollow tube needle configured to provide a discharge port for the first fluid; an outer nozzle body assembled with the inner nozzle body and having an injection port through which a second fluid is injected; an outer needle connected to the outer nozzle body and disposed to surround the hollow tube needle provided to the inner needle, the outer needle having a hollow tube needle configured to provide a discharge port for the second fluid; an inner needle positioning unit configured to control a location of a central axis of the hollow tube needle provided to the inner needle; and an outer needle positioning unit configured to control a location of a central axis of the hollow tube needle provided to the outer needle.
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公开(公告)号：US20210069741A1
公开(公告)日：2021-03-11
申请号：US16772436
申请日：2018-12-11
申请人： Jong-Su Park
发明人： Jong-Su Park , Woong Huh , Youn-Chang Lee , Woong-June Hwang
摘要： Disclosed is a coaxial control dual nozzle, which includes an inner nozzle body having an injection port through which a first fluid is injected; an inner needle connected to the inner nozzle body and having a hollow tube needle configured to provide a discharge port for the first fluid; an outer nozzle body assembled with the inner nozzle body and having an injection port through which a second fluid is injected; an outer needle connected to the outer nozzle body and disposed to surround the hollow tube needle provided to the inner needle, the outer needle having a hollow tube needle configured to provide a discharge port for the second fluid; an inner needle positioning unit configured to control a location of a central axis of the hollow tube needle provided to the inner needle; and an outer needle positioning unit configured to control a location of a central axis of the hollow tube needle provided to the outer needle.
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