| 摘要 |
PROBLEM TO BE SOLVED: To provide polyester hot-melting type conjugated staple fibers suitable for manufacturing non-woven fabrics having flexibility and heat resistance and provide non-woven fabrics using the same. SOLUTION: The objective hot-melting type conjugated staple fiber comprises the core part mainly made of trimethylene terephthalate recurring units and the sheath part made of a copolymerized polyester from a terephthalic acid component, an aliphatic lactone component, an ethylene glycol component and a butane diol component. This conjugated fiber has the glass transition point of 20-80 deg.C, the crystallization point of 90-130 deg.C, the melting point of 130-180 deg.C and Young's modulus of <=44 cN/dtex.
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