COMPOSITE FIBER FILTER COMPRISING NAN0-MATERIALS, AND MANUFACTURING METHOD AND APPARATUS THEREOF
First Claim
1. A method for manufacturing a composite fiber filter using nanofibers, the method comprising:
- melt-spinning microfiber yarns on a forming rod, which is made of a conductive material, grounded at one end thereof and rotatably driven, using a melt-spinning device, so as to form on the forming layer a microfiber layer consisting of the microfiber yarns; and
electrospinning an electrospinnable polymer solution having a given dielectric constant, on the microfiber layer, using an electrospinning device, so as to form on the microfiber layer a nanofiber layer consisting of nanofiber yarns.
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Abstract
Disclosed herein is a method for manufacturing a composite fiber filter having high efficiency and high functionality, the method comprising: melt-spinning microfiber yarns on a forming rod, which is made of a conductive material, grounded at one end thereof and rotatably driven, using a melt-spinning device, to form on the forming layer a microfiber layer consisting of the microfiber yarns; and electrospinning on the microfiber layer an electrospinnable polymer solution having a given dielectric constant, using an electrospinning device, so as to form on the microfiber layer a nanofiber layers consisting of nanofiber yarns, wherein the microfiber yarns of the microfiber layer and the nanofiber yarns of the nanofiber layer contain silver nanoparticles so as to have an antibacterial function.
46 Citations
19 Claims
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1. A method for manufacturing a composite fiber filter using nanofibers, the method comprising:
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melt-spinning microfiber yarns on a forming rod, which is made of a conductive material, grounded at one end thereof and rotatably driven, using a melt-spinning device, so as to form on the forming layer a microfiber layer consisting of the microfiber yarns; and electrospinning an electrospinnable polymer solution having a given dielectric constant, on the microfiber layer, using an electrospinning device, so as to form on the microfiber layer a nanofiber layer consisting of nanofiber yarns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for manufacturing a composite fiber filter using nanofibers, the method comprising:
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melt-spinning microfiber yarns on a forming rod, which is made of a conductive material, grounded at one end thereof and rotatably driven, using a first melt-spinning device, so as to form on the forming rod a first microfiber layer consisting of first microfiber yarns; electrospinning an electrospinnable polymer resin having a given dielectric constant, on the microfiber layer, using an electrospinning device, so as to form on the microfiber layer a nanofiber layer consisting of nanofibers; and melt-spinning microfiber yarns on the nanofiber layer using a second melt-spinning device, so as to form on the nanofiber layer a second microfiber layer consisting of second microfiber yarns having a diameter different from that of the first microfiber yarns, wherein the fiber layers are sequentially deposited on the forming rod.
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14. An apparatus for manufacturing a composite fiber filter using nanofibers, the apparatus comprising:
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a forming rod, which is made of a conductive material and grounded at one end thereof and can be rotatably driven by a driving unit; and one or more melt-spinning devices and electro-spinning devices, which are provided in the vicinity of the forming rod, whereby a microfiber layer consisting of microfiber yarns and a nanofiber layer consisting of nanofiber yarns are alternately and sequentially deposited on the forming rod by melt-spinning from the melt-spinning devices and electrospinning from the electrospinning devices. - View Dependent Claims (15, 16)
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17. A method for manufacturing a composite fiber filter using nanofibers, the method comprising:
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melt-spinning microfiber yarns on a forming rod, which is rotatably driven, using a first melt-spinning device, so as to form on the forming rod a first microfiber layer consisting of first microfiber yarns; winding on the first microfiber layer a planar nanofiber nonwoven fabric consisting of nanofiber yarns, which contain silver nanoparticles in an amount of 0.1-1.0 wt % based on the weight of polymer resin, to a given thickness, so as to form on the microfiber layer a nanofiber layer; and melt-spinning microfiber yarns on the nanofiber layer using a second melt-spinning device, so as to form on the nanofiber layer a second microfiber layer consisting of second microfiber yarns having a diameter different from that of the first microfiber yarns, wherein the fiber layers are sequentially deposited on the forming rod.
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18. A method for manufacturing a composite fiber filter using nanofibers, the method comprising:
laminating a nanofiber nonwoven fabric on a microfiber nonwoven fabric using an electrospinning process, and then winding the resulting fabric structure in the form of a cylinder to a given thickness so as to manufacture a nanocomposite fiber filter for water purification, wherein nanofibers forming the nanofiber nonwoven fabric contain self-dispersing silver nanoparticles in an amount of 0.1-1.0 wt % based on the weight of polymer resin, and the nanofiber nonwoven fabric has a porosity of 30-70% and a density of 0.1-0.22 g/cm3.
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19. A method for manufacturing a composite fiber filter using nanofibers, the method comprising:
stacking planar nanofiber nonwoven fabrics alternately with planar microfiber nonwoven fabrics to form a multilayer structure, and then bending the multilayer structure to form a folded cylindrical nanocomposite fiber filter, wherein the nanofiber nonwoven fabric consists of nanofibers containing self-dispersing silver nanoparticles in an amount of 0.1-1.0 wt % based on the weight of polymer resin and has a porosity of 30-70% and a density of 0.1-0.22 g/cm3.
Specification