Abstract: A pore-filled ion exchange polyelectrolyte composite membrane from which the surface ion exchange polyelectrolyte has been removed and a method of manufacturing the same are provided. The ion exchange polyelectrolyte composite membrane exhibits low film resistance and low in-plane-direction swelling degree, and has a smaller film-thickness than a commercial film, and thus, can be used for various purposes. In addition, since the pore-filled ion exchange polyelectrolyte composite membrane is continuously manufactured through a roll-to-roll process, the manufacturing process is simple, and manufacturing costs can be greatly reduced.

Abstract: The present invention relates to a polyester staple yarn for a wet non-woven fabric, and a wet non-woven fabric including the same, wherein the polyester staple yarn is manufactured by using a polymerization catalyst including a titanium-based compound. The polyester staple yarn is superb in terms of dispersibility due to the remarkably low defect formation thereof, and thus, the present invention can provide a wet non-woven fabric having excellent mechanical strength, and a manufacturing method therefor.

Abstract: The present invention relates to a reverse osmosis membrane and a method of preparing the same, and more particularly to a high durability reverse osmosis membrane which is excellent in interlayer bonding in a separation membrane while maintaining an equal flow rate as compared with a conventional reverse osmosis membrane to minimize a reduction in durability in the membrane upon backwashing to enhance a cleaning effect, prolong the life of a highpressure membrane, maximize the amount of accumulated treated water, and reduce maintenance costs, and a method of preparing the same.

Abstract: A laminated polyester film according to the present invention comprises: a core layer; and a sub-layer laminated on at least one surface of the core layer and containing a first particle and a second particle which are different components, wherein an average diameter of the first particle is 6 to 20 times of an average diameter of the second particle. Types, different properties, sizes, and contents of the first particle and the second particle are adjusted to solve the image blurring phenomenon and prevent a winding fault generated during processing and winding a final product. Therefore, workability and perfection of a final product can be increased and the defect rate can be decreased.

Abstract: The present invention relates to a polyamide reverse osmosis membrane including a porous support; a polyamide layer which is formed on at least one surface of the porous support; a fouling resistant layer which is formed on the polyamide layer; and a protective coating layer which is formed on the fouling resistant layer and linked by cross-linking with the fouling resistant layer, and more specifically to a polyamide reverse osmosis membrane having excellent durability and antifouling properties in which antifouling properties are improved, but there is no decrease in flow rate and salt removal rate, and there is little decrease in physical properties due to fouling and little change over time due to a preservation solution, and chlorine durability is also excellent.

Abstract: A color-changing sheet according to an embodiment of the present invention may include a base layer having a brightness (L value) of less than 40 and a color layer positioned on at least one surface of the base layer, containing a color dye or a pigment, and having a transmittance of to 90%, wherein a thickness ratio of the base layer to the color layer is 0.1 to 10, and may realize color change without adding additional particles.

Abstract: The present invention relates to a flame-retardant polyester fiber manufactured by using a titanium-based catalyst and an additive-type flame retardant, and relates to a flame-retardant polyester fiber with excellent dyeability characterized by generating a small amount of acetaldehyde, with excellent dyeability, and generating remarkably low contamination on a nozzle surface, and to a manufacturing method therefor.

Abstract: The present invention relates to a positively charged filter material with excellent ability for removing charged particles efficiently, and a method for producing the same, and more specifically to a positively charged filter material having the ability to selectively remove efficiently, in water, negatively charged organic/inorganic particles, heavy metal ions and pathogenic microorganisms, and a method for producing the same.

Abstract: An organic-inorganic adhesive composition and a gas barrier film including the same are disclosed. The organic-inorganic adhesive composition includes: a silane compound including at least one functional group of a vinyl group, an acryloxy group, a methacryloxy group, or a combination thereof; an amine group-containing compound; an isocyanate-based compound; and an acid catalyst, wherein a pH of the organic-inorganic adhesive composition is from 5 to 8.

Abstract: Disclosed are a highly absorbent composite fiber, a highly absorbent non-woven fabric, and an article including the non-woven fabric. The disclosed highly absorbent composite fiber includes: a core including a polyolefin-based resin; and a sheath including ethylene vinyl alcohol (EVOH) resin.

Abstract: The present invention is suitable for optical applications with excellent transparency through a haze value of 1.5% or lower and particles that are hardly visible to the naked eye, by producing a film using particles having little difference in refractive index in polyethylene terephthalate (PET), which is a commonly-used polyester film, and can provide a highly transparent optical film capable of improving a winding property by forming surface roughness of 4 nm or higher.

Abstract: The present invention relates to an organic solvent-soluble copolymerized polyester, a composition for forming an ultrafiltration membrane including the same, and a high water-permeability reverse osmosis membrane prepared therefrom. More specifically, the present invention relates to a polyester that has a high solubility in organic solvents at room temperature and thus can be used to produce ultrafiltration membranes at low cost, a composition for forming an ultrafiltration membrane including the same, and a high water-permeability reverse osmosis membrane prepared therefrom, wherein the reverse osmosis membrane has a reduced production cost and high water permeability.

Abstract: Disclosed are a micropore-filled amphoteric membrane for low vanadium ion permeability, a method of manufacturing the same, and a vanadium redox flow battery including the amphoteric membrane. The micropore-filled amphoteric membrane for low vanadium ion permeability minimizes crossover of vanadium ions, which occurs between a catholyte and an anolyte in a redox flow battery, and has low membrane resistance and thus has remarkably improved performance as compared to commercially available ion-exchange membranes such as Nafion, and accordingly, can be effectively used in the manufacture of a redox flow battery. In addition, the micropore-filled amphoteric membrane is continuously manufactured through a roll-to-roll process, and thus the manufacturing process is simple and manufacturing costs can be greatly reduced.

Abstract: A biaxially oriented polyester reflection film according to an embodiment of the present invention includes: a core layer having a plurality of voids, and containing homo-polyester, copolymer polyester, a resin incompatible with polyester, and inorganic particles; and a skin layer formed at least one surface of the core layer, and containing homo-polyester, copolymer polyester, and inorganic particles, wherein the biaxially oriented polyester reflection film is formed to have a plurality of light focusing structures, each of which has a concave center portion, and which are arranged in a grid pattern.

Abstract: The present invention relates to a non-woven fabric with improved mechanical strength, and more particularly, to a non-woven fabric exhibiting excellent spinnability, excellent softness, and excellent tensile strength while enabling a weight reduction.

Abstract: A spiral wound-type separation membrane module and a method for manufacturing the same are provided. The spiral wound-type separation membrane module according to an exemplary embodiment of the present invention is implemented by including an outlet pipe; a filter assembly wound in a spiral wound on the outlet pipe; and an adhesion portion in which part or all of a heat-adhesive yarn wound to surround the outer surface of the filter assembly in the longitudinal direction of the outlet pipe is melted and fixed to the filter assembly. According to the above, the spiral wound-type separation membrane module and the method for manufacturing the same can significantly reduce the defect rate and process time and simultaneously exhibit an eco-friendly effect during disposal after use.

Abstract: The present invention includes: a first sealing portion which has a first entry/exit selectively opened or closed by a first opening/closing valve and a second entry/exit selectively opened or closed by a second opening/closing valve and is configured to seal one end of a housing; a second sealing portion which has a third entry/exit selectively opened or closed by a third opening/closing valve and a fourth entry/exit selectively opened or closed by a fourth opening/closing valve, and is configured to seal the other end of the housing; and a controller which is configured to control the supply of raw water through any one of the first entry/exit and the second entry/exit or control the supply of raw water through any one of the third entry/exit and the fourth entry/exit.

Abstract: Disclosed are a double-sided adhesive film for bonding heterogeneous substrates, a laminated film, and a display device. The double-sided adhesive film for bonding heterogeneous substrates comprises: a first adhesive layer; and second adhesive layer which is disposed on the first adhesive layer and has a different adhesive force from that of the first adhesive layer to the same substrate.

Abstract: A reverse osmosis filtering module includes: a purified water discharge pipe in which a purified water discharge path is formed, and which has a communication hole that is formed on an outer periphery thereof and communicates with the purified water discharge path; a reverse osmosis filtering part including a reverse osmosis filtering member in which a purified water flow space is formed, and which is wound around the purified water discharge pipe such that the purified water flow space communicates with the communication hole; a first flow channel formation cap provided at one side and having an inlet hole; and a second flow channel formation cap provided at the other side of the reverse osmosis filtering part and having an outlet hole.

Abstract: The present invention provides a color conversion sheet comprising: a first wavelength conversion layer in which an organic phosphor is dispersed in a resin matrix; and an adhesive layer disposed on one surface of the first wavelength conversion layer, in which a surface energy of the first wavelength conversion layer is different from a surface energy of the adhesive layer so that the organic phosphor does not diffuse into the adhesive layer.