Device and Method for Preparing Filament Yarn of Composite Nanofibers
2 Assignments
0 Petitions
Accused Products
Abstract
Device and method for preparing filament yarn of composite nanofibers. The device includes pairs of electrospinning nozzles on a frame and filament guiding roller pair under the frame. The spouts of each pair of nozzles are oppositely facing. The method includes feeding polymer solutions to the pairs of nozzles, applying high DC voltage with opposite polarity respectively to each one of the pairs of nozzles, forming composite nanofibers by attracting nanofibers with opposite charge from each nozzle and striking together of the charged nanofibers, pulling/stretching the composite nanofibers to form filament yarn of composite nanofibers, drawing down the filament yarn of composite nanofibers from the first pair of nozzles and using it as a carrier to receive the nanofibers with opposite charge electrospun from the second pair of nozzles and coated by the same so as to form multi-layer (e.g., two- or more-layer) filament yarn of composite nanofibers.
-
Citations
29 Claims
-
1-9. -9. (canceled)
-
10. A device for preparing filament yarn of composite nanofibers, comprising:
- pairs of electrospinning nozzles, a filament guiding roller pair, a frame, fixed sticks and a base, wherein the pairs of electrospinning nozzles are oppositely disposed in two columns and fixed on the frame, the frame is connected to the base by the fixed sticks extending perpendicularly from the base, the filament guiding roller pair is located in a plane of the frame with substantially the same distance away from two spouts of each of the pairs of electrospinning nozzles, and the frame is set at an adjustable acute angle to the fixed sticks.
- View Dependent Claims (11, 12)
-
13. A method for preparing filament yarn of composite nanofibers with a device for preparing the filament yarn of the composite nanofibers, comprising:
- pairs of electrospinning nozzles, a filament guiding roller pair, a frame, fixed sticks and a base, wherein the pairs of electrospinning nozzles are oppositely disposed in two columns and fixed on the frame, the frame is connected to the base by the fixed sticks extending perpendicularly from the base, the filament guiding roller pair is located in a plane of the frame with substantially the same distance away from two spouts of each of the pairs of electrospinning nozzles, and the frame is set at an adjustable acute angle to the fixed sticks, the method comprising;
feeding polymer solutions to the pairs of electrospinning nozzles on the frame; applying high electrical voltages with opposite polarities to two oppositely disposed electrospinning nozzles of the pairs of electrospinning nozzles, respectively; forming composite nanofibers by attracting and striking nanofibers with opposite charge from each of the pairs of electrospinning nozzles together during a journey of the nanofibers in the air, or by attracting and depositing the nanofibers on a polymer fibrous carrier drawn down, the composite nanofibers are pulled and/or stretched, resulting in continuous filament yarn of the composite nanofibers; drawing down the filament yarn of the composite nanofibers fabricated by a first pair of the pairs of electrospinning nozzles and using the drawn down filament as a carrier to receive the nanofibers with opposite charge electrospun out from a second pair of the pairs of electrospinning nozzles, the filament yarn of the composite nanofibers is then drawn down and/or stretched, forming two-layer filament yarn of composite nanofibers; and drawing down, in turn, filament yarn of composite nanofibers fabricated by a former pair of the pairs of electrospinning nozzles and using the drawn down filament as a carrier to receive the nanofibers with opposite charge electrospun out from a latter pair of the pairs of the electrospinning nozzles, the filament yarn of composite nanofibers is then drawn down and/or stretched by the filament guiding roller pair, forming multi-layer filament yarn of composite nanofibers. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
- pairs of electrospinning nozzles, a filament guiding roller pair, a frame, fixed sticks and a base, wherein the pairs of electrospinning nozzles are oppositely disposed in two columns and fixed on the frame, the frame is connected to the base by the fixed sticks extending perpendicularly from the base, the filament guiding roller pair is located in a plane of the frame with substantially the same distance away from two spouts of each of the pairs of electrospinning nozzles, and the frame is set at an adjustable acute angle to the fixed sticks, the method comprising;
-
28. A method for preparing filament yarn of composite nanofibers with a device for preparing the filament yarn of the composite nanofibers, comprising:
- pairs of electrospinning nozzles, a filament guiding roller pair, a frame, fixed sticks and a base, wherein the pairs of electrospinning nozzles are oppositely disposed in two columns and fixed on the frame, the frame is connected to the base by the fixed sticks extending perpendicularly from the base, the filament guiding roller pair is located in a plane of the frame with substantially the same distance away from two spouts of each of the pairs of electrospinning nozzles, and the frame is set at an adjustable acute angle to the fixed sticks, the method comprising;
feeding polymer solutions to the pairs of electrospinning nozzles on the frame; applying high electrical voltages with opposite polarities to two oppositely disposed electrospinning nozzles of the pairs of electrospinning nozzles, respectively; forming composite nanofibers by attracting and striking nanofibers with opposite charge from each of the pairs of electrospinning nozzles together; pulling and stretching the composite nanofibers to form filament yarn of the composite nanofibers; and drawing down the filament yarn of the composite nanofibers fabricated by a first pair of the pairs of electrospinning nozzles and using the drawn down filament as a carrier to receive the nanofibers with opposite charge electrospun out from a second pair of the pairs of electrospinning nozzles; and drawing down and stretching the filament yarn of the composite nanofibers by the filament guiding roller pair to form multi-layer filament yarn of composite nanofibers. - View Dependent Claims (29)
- pairs of electrospinning nozzles, a filament guiding roller pair, a frame, fixed sticks and a base, wherein the pairs of electrospinning nozzles are oppositely disposed in two columns and fixed on the frame, the frame is connected to the base by the fixed sticks extending perpendicularly from the base, the filament guiding roller pair is located in a plane of the frame with substantially the same distance away from two spouts of each of the pairs of electrospinning nozzles, and the frame is set at an adjustable acute angle to the fixed sticks, the method comprising;
Specification