Abstract: Disclosed is a submerged hollow fiber membrane module which is easy to expand, has a small installation area, and exhibits excellent contamination prevention and durability. The submerged hollow fiber membrane module comprises: (I) a module body divided into two portions which has a permeated water collection space (5) and a permeated water outlet (3); (II) module support tubes (17) which are vertically connected to the upper and lower ends of the module body; (III) a plate type module header insertion layer which is provided with hollow fiber membrane spaces (10), and is inserted into the module body; (IV) a plate type diffusion layer which is provided with a diffusion port (4) and diffusion tubes (11) and is inserted into the module body subsequent to the module header insertion layer; and (V) module headers which are inserted into the module header insertion layer.

Abstract: The present invention discloses a submerged hollow fiber membrane module which is of such a structure that it is easy to expand a module processing capability according to a treatment capacity, provides convenient module coupling properties and module manufacturing properties, maintains a stable flux under an efficient air diffusion condition and prevents the damage of membranes and water leakage caused by the loosening of module connecting regions.

Abstract: A tubular braid and a composite hollow fiber membrane using the same are disclosed. The tubular braid is made by braiding yarns, the yarn made by combining thin filament and thick filament, wherein the thin filament is comprised of a plurality of monofilament having a fineness of 0.01 to 0.4 denier, and the thick filament is comprised of at least one monofilament having a fineness of 3 to 50 denier. Also, the composite hollow fiber membrane using the tubular braid of the present invention can realize excellent water permeability, high mechanical strength, good filtration reliability, great peeling strength, low dope permeation, and high stiffness.

Abstract: A header for filtering membrane module and a filtering membrane module using the same is disclosed, which is capable of maximizing efficiency in power consumption by securing a constant flow of permeate through the use of a relatively-low negative pressure, the header for filtering membrane module comprising a body with a permeate collecting space therein; and a conduit at one end of the body, the conduit being in fluid communication with the permeate collecting space, wherein at least a portion of the permeate collecting space has an inclined shape.

Abstract: A braid-reinforced composite hollow fiber membrane is disclosed. The braid-reinforced composite hollow fiber membrane comprising a reinforcing material of a tubular braid and a polymer resinous thin film coated on the surface of the tubular braid is characterized in that: the tubular braid comprises multifilaments made of monofilaments having a fineness of 0.01 to 0.4 denier, and the peeling strength of the tubular braid and a polymer resinous thin film coated on the surface thereof is 1 to 10 MPa. In the composite hollow fiber membrane, the fineness of the mono filaments constituting the tubular braid of the reinforcing material is small, that is, 0.01 to 0.4 denier, thus the surface area of the tubular braid contacted with the polymer resinous thin film is increased.

Abstract: A braid-reinforced composite hollow fiber membrane is disclosed. The braid-reinforced composite hollow fiber membrane comprising a reinforcing material of a tubular braid and a polymer resinous thin film coated on the surface of the tubular braid according to the present invention is characterized in that: the tubular braid comprises multifilaments made of monofilaments having a crimp rate of 2 to 40%, and the peeling strength of the tubular braid and a polymer resinous thin film coated on the surface thereof is 1 to 10 MPa. In the composite hollow fiber membrane, the crimp rate of the monofilaments constituting the tubular braid of the reinforcing material is 2 to 40%, thus the surface area of the tubular braid contacted with the polymer resinous thin film is increased. Thus, the peeling strength of the tubular braid and the polymer resinous thin film coated on the surface thereof is excellent.

Abstract: Disclosed is a submerged hollow fiber membrane module which is easy to expand, has a small installation area, and exhibits excellent contamination prevention and durability. The submerged hollow fiber membrane module comprises: (I) a module body divided into two portions which has a permeated water collection space (5) and a permeated water outlet (3); (II) module support tubes (17) which are vertically connected to the upper and lower ends of the module body; (III) a plate type module header insertion layer which is provided with hollow fiber membrane spaces (10), and is inserted into the module body; (IV) a plate type diffusion layer which is provided with a diffusion port (4) and diffusion tubes (11) and is inserted into the module body subsequent to the module header insertion layer; and (V) module headers which are inserted into the module header insertion layer.

Abstract: A method of coating a polymeric resinous thin film on the surface of a tubular braid reinforcing material, wherein a polymeric resinous coating material is spin coated on the surface of an annular braid, the coated braid is extruded into the air, and the coating material is coagulated in a coagulating bath, wherein the ratio of the spin coating feed ratio (Q) one the braid advancing speed (v) with respect to a unit outer diameter (D0) of the braid is represented by the formula k ? ( g ? / ? m 2 ) = Q ? ( g ? / ? min ) v ? ( m ? / ? min ) ? D 0 ? ( m ) within the range of 200 to 3,000 g/m2.

Abstract: A braid-reinforced hollow fiber membrane which includes a reinforcing material of a tubular braid and a polymer resinous thin film coated on the surface of the reinforcing material. The polymer resinous thin film has a skin layer with micro pores having a diameter in the range from 0.01 to 1 ?m and an inner layer of a sponge structure with micro pores having a diameter less than 10 ?m. The hollow fiber membrane exhibits excellent mechanical strength, reliable filtration and simultaneously, good water permeability.

Abstract: The present invention discloses a submerged hollow fiber membrane module which is of such a structure that it is easy to expand a module processing capability according to a treatment capacity, provides convenient module coupling properties and module manufacturing properties, maintains a stable flux under an efficient air diffusion condition and prevents the damage of membranes and water leakage caused by the loosening of module connecting regions.

Abstract: A method of coating a polymeric resinous thin film on the surface of a tubular braid reinforcing material, wherein a polymeric resinous coating material is spin coated on the surface of an annular braid, the coated braid is extruded into the air, and the coating material is coagulated in a coagulating bath, wherein the ratio of the spin coating feed ratio (Q) one the braid advancing speed (v) with respect to a unit outer diameter (D0) of the braid is represented by the formula k ? ( g ? / ? m 2 ) = Q ? ( g ? / ? min ) v ? ( m ? / ? min ) ? D 0 ? ( m ) within the range of 200 to 3,000 g/m2.

Abstract: The present invention relates to a braid-reinforced hollow fiber membrane. The hollow fiber membrane comprises a reinforcing material of a tubular braid and a polymer resinous thin film coated on the surface of the reinforcing material. The polymer resinous thin film has a skin layer with micro pores having a diameter in the range from 0.01 to 1 &mgr;m and an inner layer of a sponge structure with micro pores having a diameter less than 10 &mgr;m.

Abstract: An attenuated Japanese encephalitis virus adapted to Vero cell by passages on Vero cell is disclosed. A Japanese encephalitis vaccine comprising said attenuated virus is also disclosed.

Abstract: The present invention relates to a glass clear heavy gauge sheet with copolyester, having over than 83% of lights transmittance and lower than 5% of Haze, prepared by copolymer wherein polymerized [A] the acid ingredient component (i) terephthalate moiety as major component and (ii) essentially including 2,6-naphthalenedicarboxylate moiety, and (iii) selectively including isophthalate moiety with [B] the glycol component of (i) ethyleneglycol (EG) itself or (ii) the mixture of ethyleneglycol (EG) and 1,4-cyclohexandimethanol (CHDM). A glass clear heavy gauge sheet with copolyester of the present invention is suitable various industrial usages such as glass substitute of automobile, window glass substitute of high building, and transparent soundproof wall.

Abstract: The present invention provides a method for improving blood compatibility of interpenetrating multicomponent polymer by controlling various factors affecting phase separation such as composition ratio, synthetic temperature, synthetic pressure, cross-linking density and hydrophilicity of polyurethane in the course of synthesizing interpenetrating polymer network ("IPN") where hydrophilic urethane resin and hydrophobic styrene derivative are cross-linked each other. IPN materials of the invention may be widely used in various applications such as artificial organ or surface finishing material which are in direct contact with blood, since they inhibit thrombogenesis by suppressing platelet adhesion and agglutination.

Abstract: The present invention relates to a thermal transfer ink layer composition, wherein polyvinylacetal resin and cellulose derivatives are used in a mixture for the binder in the thermal transfer ink layer composition of the sublimation thermal transfer ink ribbon, or the another type of a binder is mixed into the mixture of polyvinylacetal resin and cellulose derivatives and so used therein. As a result, the adhesion between the thermal transfer ink layer and substrate film, and the gradation property of printed images are improved as compared to the case in which the respective binders are used individually. More particularly, the present invention relates to the thermal transfer ink layer composition of the sublimation thermal transfer ink ribbon, which can yield high quality images by means of the aforementioned improvements.

Abstract: The present invention relates to a polyester multilayer sheet having excellent impact strength and weatherability, and relates to a process for preparing the same.The present invention relates to coextrude more than 2 kinds of copolyester resins, composed of 5-99 mol % of ethyleneterephthalate and 1-95 mol % of ethylenenaphthalate or ethyleneisophthalate, having at least 0.005 dl/g of inherent viscosity difference each others, on 3-7 layers of multilayer sheet which had been arrayed by turns with high viscosity resin and low viscosity resin, and its outer layer has the higher inherent viscosity than the inner layer.Polyester multilayer sheet of the present invention is suitable for window glass substitute of building, transparent agricultural intercepting material and clothing material.