| 摘要 |
PURPOSE:To obtain the hot-melt type titled fiber having excellent adhesion and good heat-resistance after adhering, by covering a fiber with a copolyester obtained by reacting a terephthalic acid component with a specific diol compo nent and having definite crystal melting point. CONSTITUTION:The aimed binder fiber covering a fiber surface with a copolyester having 130-210 deg.C melting point and obtained by esterification and polycondensation of (A) terephthalic acid component such as dimethyl terephthalate with (B) diol component consisting of 1,4-butane diol and 1,6- hexane diol having a molar ratio of 85/15-2/98. The aimed binder fiber is preferably a sheath-core type composite fiber containing above-mentioned copolyester as a sheath component and a polyester having >=220 deg.C crystal melting point as a core component.
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