Abstract: A waterproof sound-transmitting sheet, which interposes an adhesive layer composed of a material having micropores formed therein, thus smoothing the flow of the air between a waterproof sound-transmitting layer and a support layer. The waterproof sound-transmitting sheet includes a waterproof sound-transmitting layer formed of a film having elasticity, an adhesive layer having one surface adhered to one surface of the waterproof sound-transmitting layer, and a support layer having one surface adhered to the other surface of the adhesive layer; and the adhesive layer includes a substrate having a pore formed therein and an adhesive agent formed on both surfaces of the substrate.

Abstract: Provided are an electrode capable of preventing separation of a short-circuit prevention layer since the short-circuit prevention layer, which is made of a heat-resistant polymer fiber, can be attached with high binding force when formed on the surface of the electrode, in the case that an active material layer includes a predetermined amount of polyvinylidene fluoride (PVdF) as a binder; a secondary battery using the same; and a method of manufacturing the electrode. The electrode includes: an electrode current collector; an active material layer formed on the electrode current collector; and a short-circuit prevention layer formed on the active material layer, wherein the short-circuit prevention layer includes a porous polymer fiber web having a plurality of pores through accumulation of ultrafine fibers of a heat-resistant polymer material, and the active material layer includes PVdF as a binder.

Abstract: A yarn including a plurality of twists formed by twisting single fiber strand or multiple fiber strands; and fiber grooves, which are spaces formed between the twists, to provide three-dimensional growth spaces and migration paths for cells. Accordingly, a cell proliferation rate and cell viability may be enhanced by creating microenvironments suitable for migration, proliferation and differentiation of cultured cells. In addition, cell clusters having more uniform shapes may be easily implemented by forming the proliferation spaces and migration paths for the cultured cells as similar as possible to each other in each scaffold. Further, the cells cultured thereby can be cultured in a suitable shape and structure to be applied to an in vitro experimental model or transplanted into the body of an animal, and can be widely applied in various products used in a cell culture or tissue engineering field.

Abstract: Provided are filter media for liquid filters and a method of manufacturing the same, in which a thin filter layer is formed and the content of nanofibers weighs light, by laminating a low weight nanofiber web on a porous nonwoven fabric, and thus a less differential pressure is applied before and after filtering, to thereby increase a pass flow rate. The filter medium includes: a porous support that plays a strength support role; and a nanofiber web that is laminated on one side of the porous support and is made of nanofibers of a polymer material, in which the nanofiber web comprises fine pores of a three-dimensional structure, through which a liquid to be treated passes, wherein content of the nanofibers is less than 5 gsm.

Abstract: Disclosed is a waterproof sound-transmitting sheet, which includes a waterproof layer of a nonporous material and a support layer of a porous material, and maintains waterproof performance and sound transmission performance at a water pressure of about 10 atm. The disclosed waterproof sound-transmitting sheet includes a waterproof layer formed of a film shape of a nonporous material, a first adhesive layer having one surface adhered to one surface of the waterproof layer, and a support layer formed of a film shape of a porous material, and having one surface adhered to the other surface of the adhesive layer; and the support layer can be composed of metal mesh or nonwoven fabric.

Abstract: Provided are a pressure-sensitive adhesive tape, a method of manufacturing the same, and an electronic device having the same. The pressure-sensitive adhesive tape includes: a fiber accumulation type substrate in which a plurality of fibers are accumulated to form a plurality of pores therebetween; a metal coating layer coated on the outer circumferential surfaces of the plurality of fibers of the fiber accumulation type substrate; and an electrically conductive adhesive layer formed on one side or both sides of the fiber accumulation type substrate on which the metal coating layer is formed, wherein the electrically conductive adhesive layer is formed of an electrically conductive adhesive material filled in the plurality of pores and is electrically connected by an applied pressure.

Abstract: A filter medium is provided. A filter medium according to an embodiment of the present invention comprises: a fiber web layer of a three-dimensional network structure including nanofiber; and a hydrophilic coating layer which covers at least a part of the outer surface of the nanofiber. According to this, a flow rate can be remarkably increased due to the improved hydrophilicity of the filter medium. Also, as the improved hydrophilicity is maintained for a long period of time, the lifespan can be remarkably prolonged. Furthermore, since the modification of a porous structure of the filter medium is minimized during the process of hydrophilization so that the initially designed physical properties of the filter medium can be exhibited in its entirety, the filter medium having chemical resistance, excellent water permeability and durability can be variously applied in the water treatment field.

Abstract: Provided are a deionization composite electrode, a method of manufacturing the deionization composite electrode, and a deionization apparatus using the same. The deionization composite electrode includes: a porous substrate having fine pores; an ion exchange membrane that is formed by electrospraying an ion exchange solution on one surface of the porous substrate; and a conductive film that is formed on the other surface of the porous substrate.

Abstract: Provided are a flexible electromagnetic shielding sheet and an electronic device having the same. The flexible electromagnetic shielding sheet includes: a pressure-sensitive adhesive tape having an electrically conductive adhesive layer on one surface thereof; a fiber web adhered to the electroconductive adhesive layer and formed by accumulating fibers; a metal layer formed on at least one surface of the fiber web to shield electromagnetic waves; and an insulating film bonded to the fiber web on which the metal layer is formed. Further, the pressure-sensitive adhesive tape includes: a fiber-accumulating type substrate formed by accumulating a plurality of fibers and having a plurality of pores; and an electrically conductive adhesive layer formed on either surface of the fiber-accumulating type substrate, and made of an electrically conductive adhesive material filled in the plurality of pores and electrically connected to the fiber-accumulating type substrate by an applied pressure.

Abstract: Provided is yarn for a cell culture scaffold. The yarn includes ply-twisted fiber strands, and to prevent density-dependent inhibition of cultured cells and increase a cell-contacting specific surface area, at least a part of the plurality of twisted fiber strands are untwisted such that an open space is formed between the fibers. A cell proliferation rate and cell viability may be increased by creating microenvironments suitable for migration, proliferation and differentiation of the cultured cells using the yarn. A large quantity of cells may be simultaneously cultured by creating a cell proliferation space as large as possible in a scaffold space having a limited cell proliferation space, and cell proliferation may be steadily maintained by preventing the inhibition of cell proliferation due to intercellular contact. The cells cultured may be cultured to have a shape/structure suitable for application to an in vitro experiment model or implantation into an animal body.

Abstract: Provided is an antimicrobial dressing, which includes: a first cover member having a plurality of pores formed therein and contacting a wound; an antimicrobial membrane that is made by accumulating nanofibers containing a water-soluble polymer that is dissolved in an exudate secreted from the wound, a synthetic polymer, and an antimicrobial substance released due to dissolution of the water-soluble polymer, the antimicrobial membrane being laminated on the first cover member and having a plurality of pores formed therein; and a second cover member laminated on the antimicrobial membrane and having a plurality of pores formed therein and exposed to an external air.

Abstract: Provided is a composite membrane for western blot, in which the composite membrane is prepared by combining nanofiber webs with nonwoven fabrics, and a basis weight of the nanofibers is in a range of 1 gsm to 50 gsm on the nonwoven fabrics, and an average pore size is in a range of 0.1 ?m to 1.0 ?m. The composite membrane for western blot including nanofibers has advantages such as saving of a production cost, and an excellent response characteristic due to a capillary phenomenon of a double structure, to thereby easily detect even a small amount of a particular substance present in a protein.

Abstract: Provided is a wearable flexible printed circuit board, in which a conductive circuit pattern is formed on a fiber web formed by accumulating fibers, and thus a base substrate has flexibility, resilience, waterproofness and air-permeability so as to be applied to future-oriented devices, a manufacturing method thereof, and a wearable smart device using the same. The wearable flexible printed circuit board includes: a base substrate made of a fiber web that is formed by accumulating spun fibers made of a fiber-forming polymer material and having a diameter of 3 ?m or less; and a conductive circuit pattern formed on the base substrate.

Abstract: Disclosed herein is a waterproof sound-transmitting sheet having high sound transfer efficiency and excellent water proofing performance and a method of producing same. The waterproof sound-transmitting sheet includes: a film-shaped sound-transmitting layer made of a first polymer material; and a webbed pigment layer formed on at least one side of the sound-transmitting layer and made of a second polymer material containing a pigment having a predetermined color, wherein the second polymer material has a melting point higher than that of the first polymer material.

Abstract: Provided is a nanofiber vent device for a urea water tank including a filter unit for discharging gas generated in the tank main body and preventing external dust, foreign matter, and moisture from flowing into the tank main body, as a vent device that is installed in a tank main body storing urea water and discharging gas inside the tank main body to the outside.

Abstract: Provided are a polymer electrolyte, a lithium secondary battery using the same, and a manufacturing method thereof, in which a gel polymer electrolyte is formed from a monomer for forming a gel polymer by a rapid polymerization reaction, when using a porous nanofiber web as an electrolyte matrix, and injecting an organic electrolytic solution formed by mixing the gel polymer forming monomer and a polymerization initiator, to induce an addition polymerization reaction, but the porous nanofiber web maintains a web-like shape. The polymer electrolyte includes: a separator made of a porous nanofiber web having a plurality of nanofibers; and a gel polymer portion impregnated in the porous nanofiber web. the gel polymer portion is formed by impregnating an electrolytic solution containing a non-aqueous organic solvent, a lithium salt solute, a gel polymer forming monomer, and a polymerization initiator in the porous nanofiber web and polymerizing the gel polymer forming monomer.

Abstract: Provided is a cell culture support, which is a support for attaching and culturing cells, and which includes: a fibrous web which is made by accumulating fibers of a biodegradable polymer and on which a plurality of pores are formed; and a plurality of beads formed on the fibers to secure spaces through which the cells penetrate into the fibrous web and grow therein.

Abstract: A liquid drug-filtering filter medium is provided, which can include a nanofiber web having a three-dimensional network structure for filtering foreign substances included in a liquid drug. According to the embodiment, the occurrence of differential pressure when drawing in and filtering a liquid drug is minimized, and thus the liquid drug may be quickly drawn into a syringe cylinder within a short time and by applying small force, and at the same time, the filtration rate of foreign substances in the liquid drug is very outstanding. A method for producing the liquid drug-filtering filter medium is also provided, which enables the very easy adjustment of a pore structure of the filter medium or the diameters of the pores in order to enable the pore structure to minimize the occurrence of differential pressure or change the differential pressure to a target level.

Abstract: Provided is a dry pad, including a wound-covering membrane formed by arranging a fiber containing a hydrophilic polymer that is swollen by an exudate secreted from a wound, a hydrophobic polymer, and a dry wound-healing agent that is released through swelling of the hydrophilic polymer and is difficult to store in a liquid phase, and a first release member, which is a support on which the fiber is arranged and which is separated from the wound-covering membrane.

Abstract: The present disclosure relates to an apparatus for sensing touch pressure. The apparatus for sensing touch pressure, according to one mode of the present disclosure, includes: a first substrate provided with a first electrode unit formed thereon; a second substrate provided with a second electrode unit formed thereon; and a porous membrane member provided between the first substrate and the second substrate and deformed or restored according to touch pressure applied to the first substrate.