| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermally adhesive conjugated fiber for wet unwoven fabric, which is good adhesiveness to cellulosic fibers and enables the efficient and stable production of a unwoven fabric having an uniform weave. SOLUTION: The thermally adhesive conjugated fiber comprises: a fiber-forming component and a thermally adhesive component, wherein the thermally adhesive component is a modified polyolefin prepared by graft-copolymerizing a vinyl monomer containing an unsaturated carboxylic acid or an unsaturated carboxylic anhydride or a mixture of the modified polyolefin with one or more other polymers; the fiber-forming component is a polymer having a higher melting point than that of the modified polyolefin; both the components are combined so that at least the thermally adhesive component is exposed to the surface of the conjugated fiber, wherein an oiling agent is applied the surface of the thermally adhesive conjugated fiber, and satisfies the followings (1) to (6). (1) The content of the vinyl monomer having the unsaturated carboxylic acid or the unsaturated carboxylic anhydride is 0.005 to 0.04 mol/kg based on the weight of the thermally adhesive component; (2) the melt index of the thermally adhesive component is 15 to 200 g/10 min; (3) the rate of the thermally adhesive component in the conjugated fiber is 40 to 95 wt.%; (4) the length of the fiber is 2 to 30 mm; (5) the oiling agent is a polyester/polyether copolymer; and (6) the adhesion rate of the oiling agent is not less than 0.01 wt.%. COPYRIGHT: (C)2011,JPO&INPIT |
