Patent ID: 7556761
Filing Date: 2009-07-07
Classification: D01D,Y10T

Abstract:
1. A process of manufacturing core-sheath composite fiber comprising the steps of: (1) preparing a hollow fiber in a form of filament or filament segment, wherein, in a form of filament, communicating pores are produced in parts of the fiber from an outer surface to a hollow portion of the fiber, wherein, in a form of filament segment, open is formed at each end of the fiber; (2) preparing filling material which is composed of functional materials; (3) sealing the porous parts or open ends of step (1) in pressure containers or in vacuum containers using sealing gum, keeping adjacent porous parts or the two open ends of the same fiber respectively sealed in the pressure container and in the vacuum container, wherein the vacuum containers are separated from the pressure containers; (4) adding filling material of step (2) into pressure containers of step (3), thereby, keeping the porous parts or open ends in the pressure containers completely immersed in the filling materials therein, and leaving some segments of the hollow fiber between the adjacent pressure containers and the vacuum containers exposed to the atmosphere; and (5) pressurizing the pressure containers using compressed gas, and evacuating the vacuum containers, thereby a pressure difference existing between the two adjacent porous parts or open ends, then the filling material flowing from the communicating pores or opens immersed in the filling material added in the pressure containers to the adjacent porous parts or open ends in the vacuum containers, thereby filling the filling material into the hollow portion of the fiber of step (1), core-sheath composite fiber being formed therefore.