| WOONGJIN CHEMICAL CO., LTD. Patent applications |
| Patent application number | Title | Published |
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| 20120043274 | FORWARD OSMOSIS MEMBRANE FOR SEAWATER DESALINATION AND METHOD FOR PREPARING THE SAME - A forward osmosis membrane for seawater desalination and a method for preparing the same. The forward osmosis membrane has a composite membrane structure including a nonwoven fabric layer, a hydrophilic polymer layer, and a polyamide layer. The hydrophilic polymer layer formed on the nonwoven fabric layer facilitates an inflow of water from the feed water to the draw solution to enhance flux and realize high water permeability in the direction of osmosis. The polyamide layer not only secures contamination resistance and chemical resistance but also minimizes the back diffusion of salts of the draw solution in the direction of reverse osmosis. Hence, the forward osmosis membrane of the present invention is greatly useful for desalination of high-concentration seawater. | 02-23-2012 |
| 20100317248 | FABRIC INCLUDING LOW-MELTING FIBER - Fabrics including a low-melting fiber are provided. In an embodiment, the fabric includes a regular fiber and a low-melting fiber. The low-melting fiber is directly included in either warps or wefts or both. Alternatively, a blended or plied fiber of the regular fiber and the low-melting fiber is included in either warps or wefts or both. The low-melting fiber has a fusion rate of 30 to 100%. The fabric has a yarn slip length of 0.1 to 2.5 mm. | 12-16-2010 |
| 20100288449 | THREE-DIMENSIONAL FABRIC WITH THREE-LAYERED STRUCTURE - A three-dimensional fabric with three-layered structure is provided. The three-dimensional fabric comprises a surface layer, a backing layer, an intermediate layer, a first interconnection portion for connecting the surface layer and the backing layer, and a second interconnection portion for connecting the intermediate layer and the backing layer. The three-dimensional fabric with three-layered structure can be woven on a single loom in a batch operation and undergo transformation between two-dimensional shape and three-dimensional shape. This fabric is applicable as materials for blinds with high light-shielding rate because intermediate portions have a multi-layered structure. | 11-18-2010 |
| 20100218841 | 3-D FABRIC AND PREPARING THEREOF - A three-dimensional multilayer fabric is provided. The fabric comprises a surface layer, a backing layer, and an intermediate layer connecting the surface layer and the backing layer. The intermediate layer has a multi-layered structure where a multiple of a fabric is separated each other. The three-dimensional multilayer fabric can be woven on a single loom in a batch operation and undergo transformation between two-dimensional shape and three-dimensional shape. This fabric is applicable as materials for blinds with high light-shielding rate because intermediate portions have a multi-layered structure. | 09-02-2010 |
| 20100151756 | FABRIC FOR SCREEN INCLUDING DOPE DYED FIBER - Screen fabrics are provided. In an embodiment, the screen fabric includes a regular fiber and a dope dyed fiber. The dope dyed fiber is directly included in either warps or wefts or both. Alternatively, a blended or plied fiber of the regular fiber and the dope dyed fiber is included in either warps or wefts or both. Differences in the lightness, chroma and hue of the screen fabric before and after post-processing are ±2 or less, ±2 or less and ±0.1 or less, respectively. | 06-17-2010 |
| 20100116731 | Reverse Osmosis Water Purifier Having Simple Filter Configuration - Disclosed therein is a reverse osmosis water purifier having a simple filter configuration, which includes filter parts consisted of a sediment-filter, a chlorine-resistant polyamide composite membrane and a post-carbon-filter. The reverse osmosis water purifier can be designed in slim size by omitting a pre-carbon-filter, and provide drinking water of good quality since a portion of the residual chlorine in the feed water pass through the chlorine-resistant polyamide composite membrane to the downstream of said membrane and the residual chlorine can inhibit an adventitious growth of microorganism in the post-carbon-filter or the purified-water tank. | 05-13-2010 |
| 20090288731 | 3D FABRIC AND PREPARING THEREOF - A three-dimensional multilayer fabric is provided. The fabric comprises a surface layer, a backing layer, and an intermediate layer connecting the surface layer and the backing layer. The surface layer includes sequential unstitched surface portions and sequential stitched surface portions formed in an alternating and repeating pattern. The unstitched surface portions of the surface layer are essentially composed of surface warp threads only, and the stitched surface portions of the surface layer are composed of the surface warp threads and intermediate warp threads. The backing layer includes sequential unstitched backing portions and sequential stitched backing portions formed in an alternating and repeating pattern. The unstitched backing portions of the backing layer are essentially composed of backing warp threads only, and the stitched backing portions of the backing layer are composed of the backing warp threads and the intermediate warp threads. The intermediate warp threads are woven without interlacing with weft threads on the surfaces of the unstitched backing portions. The intermediate layer includes sequential intermediate portions composed of the intermediate warp threads only. Each of the intermediate portions consists of a first intermediate portion and a second intermediate portion connected to the stitched surface portions and the stitched backing portions in an alternating and repeating pattern. The connecting warp threads of the intermediate layer exposed to the outside of the backing layer are sheared. Further provided is a method for the production of the fabric. | 11-26-2009 |
