HEAT BONDING CONJUGATE FIBER, FIBER ASSEMBLY AND NONWOVEN FABRIC USING THE ASSEMBLY

摘要

PROBLEM TO BE SOLVED: To obtain a bulky nonwoven fabric firmly bonding to cellulosic fiber hardly causing release from adhesive surface or falling of fiber from nonwoven fabric when a heat bonding conjugate fiber is mixed with cellulosic fiber and both fibers are bonded by heating and used as a nonwoven fabric. SOLUTION: This heat bonding conjugate fiber is combinedly used with a cellulosic fiber. The heat bonding conjugate fiber is obtained by conjugating a modified polyolefin (having 0.05-2 mol/kg) obtained by subjecting a vinyl monomer (hereinafter referred to as a modifier) containing at least one kind of compound selected from unsaturated carboxylic acids and unsaturated carboxylic acid anhydrides to graft polymerization as a first component with a second component comprising a resin having higher milting point than the first component so that the first component continuously forms at least a part to fiber surface in longitudinal direction. The heat bonding conjugate fiber has 0.5-50 denier single yarn fineness, 3-25 mm fiber length and 5-30 number of crimps.