Patent application number | Description | Published |
20080200640 | Aromatic Polyamide Filament And Method Of Manufacturing The Same - Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized by comprising multi-stage injection of a coagulant with sulfuric acid concentration lowered sequentially stage by stage, to a spun material fed into a coagulant injection tank. The present invention enables increase of a spinning and take-up velocity without occurrence of thread cutting by uniformly and evenly coagulating surface and inside of the spun material. In addition, the present invention recovers the coagulant or water already used and reuses the recovered coagulant or water in the earlier stages, so that it has advantages of saving production costs and reducing environmental contamination. Accordingly, the wholly aromatic polyamide filament produced according to the present invention has high crystallinity X, large apparent crystal size ACS and reduced defects in the crystal itself, thereby exhibiting more improved physical properties such as strength and modulus. | 08-21-2008 |
20080221299 | Aromatic Polyamide Filament and Method of Manufacturing the Same - Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized in that, in a process of preparing wholly aromatic polyamide polymer, a multiple tubular feed pipe for polymeric monomer and polymerization solvent with specific construction of adjacent inner paths | 09-11-2008 |
20080227947 | Aromatic Polyamide Filament and Method of Manufacturing the Same - Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized in that, in the process of preparing the wholly aromatic polyamide polymer, the aromatic diamine, aromatic diacid chlrodie and polymerization solvent put into the reactor | 09-18-2008 |
20090253890 | AROMATIC POLYAMIDE FILAMENT AND METHOD OF MANUFACTURING THE SAME - Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized in that, in a process of preparing wholly aromatic polyamide polymer, a multiple tubular feed pipe for polymeric monomer and polymerization solvent with specific construction of adjacent inner paths | 10-08-2009 |
20100237532 | AROMATIC POLYAMIDE FILAMENT AND METHOD OF MANUFACTURING THE SAME - Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized in that, in the process of preparing the wholly aromatic polyamide polymer, the aromatic diamine, aromatic diacid chloride and polymerization solvent put into the reactor | 09-23-2010 |
20100301516 | AROMATIC POLYAMIDE FILAMENT AND METHOD OF MANUFACTURING THE SAME - Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized by comprising multi-stage injection of a coagulant with sulfuric acid concentration lowered sequentially stage by stage, to a spun material fed into a coagulant injection tank. The present invention enables increase of a spinning and take-up velocity without occurrence of thread cutting by uniformly and evenly coagulating surface and inside of the spun material. In addition, the present invention recovers the coagulant or water already used and reuses the recovered coagulant or water in the earlier stages, so that it has advantages of saving production costs and reducing environmental contamination. Accordingly, the wholly aromatic polyamide filament produced according to the present invention has high crystallinity X, large apparent crystal size ACS and reduced defects in the crystal itself, thereby exhibiting more improved physical properties such as strength and modulus. | 12-02-2010 |
20100325851 | METHOD FOR MANUFACTURING BULLETPROOF FABRIC - Disclosed is a method for manufacturing bulletproof fabric, the method comprising weaving fabric; scouring the fabric; applying a pretreatment process to the scoured fabric; and applying a water-repellent process to the pretreated fabric, wherein the pretreatment process comprises adjusting a moisture regain of the scoured fabric. In this method, the fabric is treated with the pretreatment process before the water-repellent process, so that it is possible to maintain the constant concentration of water-repellent composition, and to permeate the water-repellent agent into the fabric with easiness, thereby producing the bulletproof fabric with the uniform and good water-repellent property. Thus, even though the bulletproof fabric is used for a long period of time, it is possible to prevent deterioration of the bulletproof property in the fabric. | 12-30-2010 |
20120088068 | ARAMID COMPOSITE AND METHOD FOR PRODUCING THE SAME - Disclosed are an aramid composite which satisfies bulletproof performance required for the related art, is lightweight and exhibits superior adhesive strength, and a method for producing the same. The aramid composite includes an aramid fabric, an adhesive layer and a metal substrate, wherein at least one of the surface of the aramid fabric and the surface of the metal substrate is modified. | 04-12-2012 |
20120289631 | AROMATIC DIAMINE AND METHOD FOR MANUFACTURING THE SAME, AND ARAMID FIBER AND METHOD FOR MANUFACTURING THE SAME - Disclosed is aromatic diamine with high purity obtained by efficiently removing impurities and preventing oxidation, and a method for manufacturing the same; and aramid fiber with improved discoloration resistance realized by preventing deterioration in quality even for a long-period exposure to the external environments of sunlight, atmosphere, and moisture, and a method for manufacturing the same. | 11-15-2012 |
20120319315 | POLYACRYLONITRILE-BASED POLYMER SOLUTION, PREPARING METHOD OF THE SAME, CARBON FIBER PRECURSOR, MANUFACTURING METHOD OF THE SAME AND MANUFACTURING METHOD OF CARBON FIBER USING THE SAME - Disclosed is a method for manufacturing carbon fiber which comprises the use of un-reacted raw material monomers in solution to prepare the precursor fiber for making the carbon fiber, and a relatively short passage period through hydrogen, which reduce production costs and increase returns. The present invention further comprises the carbon fiber precursors made thereby. | 12-20-2012 |
20130167503 | HYBRID FIBER AND METHOD FOR FABRICATING THE SAME - The present disclosure relates to a hybrid fiber fabricated with a low production cost while having excellent mechanical properties, as well as a method for fabricating the same. The disclosed hybrid fiber includes; a first filament, and a second filament different from the first filament, wherein a strength-strain curve of the hybrid fiber measured according to ASTM D 885 has at least one peak, provided that, if the strength-strain curve has at least two or more peaks, a difference in strain between a first peak having the lowest strain and a second peak having the highest strain, among the above two or more peaks, is 3% or less. | 07-04-2013 |
20130273276 | AIRBAG AND METHOD FOR MANUFACTURING THE SAME - Disclosed are an airbag which can endure great external impact as well as high temperature and high pressure and is thus useful as an external airbag and a method for manufacturing the same. The airbag includes: a fabric containing an aramid fiber having an young's modulus of 600 to 1000 g/d and a tenacity of 20 to 30 g/d, and having a cover factor of 1500 to 2100, and a coating layer formed on the surface of the fabric, wherein a seam strength of an adhered member measured in accordance with ASTM D 1683 is 200 to 600 kgf/20 mm. | 10-17-2013 |
20140011968 | COMPOSITION FOR ARAMID AND ARAMID PRODUCT MANUFACTURED USING THE SAME - Disclosed is an aramid product in which the number of defects present in noncrystalline regions is considerably reduced and a composition for aramid for producing the same. The composition contains aromatic polyamide and a fused aromatic compound, wherein the content of the fused aromatic compound is 0.01 to 10 parts by weight, based on 100 parts by weight of the aromatic polyamide. | 01-09-2014 |
20140170416 | SUPERABSORBENT YARN AND METHOD FOR MANUFACTURING THE SAME - Disclosed are to a superabsorbent yarn capable of minimizing the degradation of strength and elongation thereof after coated with a superabsorbent material and minimizing white powders which might be caused and impose processing difficulties during an optical cable manufacturing process and a method for manufacturing the same. The superabsorbent yarn of the invention comprises a yarn and a superabsorbent material coated on the yarn, wherein the superabsorbent material comprises crosslinked polyurethane. | 06-19-2014 |
20140199905 | BULLETPROOF FABRIC AND METHOD FOR PRODUCING THE SAME - Disclosed are a bulletproof fabric and a method for producing the same that exhibit improved anti-traumaproperty and minimize deterioration in bulletproofness even after use under harsh conditions for a long period of time. The bulletproof fabric includes a fabric comprising at least one high-strength fiber selected from the group consisting of a high molecular weight polyethylene fiber, an aramid fiber, and a polybenzoxazole fiber, and a water repellent layer disposed on the high-strength fiber, wherein the water repellent layer is formed by treating the fabric with a water-repellent agent comprising fluorocarbon and a hardness-enhancing resin, and the hardness-enhancing resin is a polyvinyl acetate resin, a polyester resin, a polyacrylate resin, a melamine resin, or a mixture of two or more thereof. | 07-17-2014 |
20140302237 | METHOD FOR TREATING HIGH STRENGTH FABRIC TO BE WATER REPELLENT - The present invention relates to a method for treating high-strength fabric to be water-repellent, which includes dipping a high-strength fabric in a water-repellent agent composition to impregnate the high-strength fabric with the water-repellent agent composition, and then, using an air-suction machine to pick-up a part of the water-repellent agent composition impregnated in the high-strength fabric before drying and heating the same. The present invention has advantages in that a part of the water-repellent agent composition impregnated in the high-strength fabric may be uniformly picked-up during dipping, so as to improve water-repellent performance, especially, water-repellency after friction as well as initial water-repellency, and may effectively prevent occurrence of wrinkles on the high-strength fabric during water-repellent treatment. The high-strength fabric obtained by water-repellent treatment according to the present invention exhibits increased flexibility without wrinkles, so as to improve wearing comfort. Further, in case of using the fabric as a raw fabric for bulletproof garments, water-repellency is increased to prevent deterioration in bulletproof properties caused by water absorption. | 10-09-2014 |
20140360346 | BULLETPROOF FABRIC AND BODY ARMOR MANUFACTURED BY USING SAME - The present invention discloses a bulletproof fabric and a body armor manufactured using the same. The bulletproof fabric includes an aramid fabric | 12-11-2014 |