| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polyester-based blended yarn of filaments having different shrinkages capable providing a woven or knitted fabric excellent not only in bulkiness, heat retaining properties and lightness but also in soft feeling, resilience, body, stiffness, etc., and further hardly causing skitteriness caused by the difference of dyeing among each fiber constituting the blended yarn of filaments having different shrinkages. SOLUTION: This polyester-based blended yarn of filaments having different shrinkages comprises a latently crimped multifilament yarn having heat shrinkage and a self-expandable polyester multifilament yarn having hollow cross sections. The latently crimped multifilament yarn is constituted of a filament group having two kinds of polyethylene terephthalate simultaneously satisfying both of the formulas 0.35<=η1 <=0.55<η2 and 0.08<=η2 -η1 <=0.55 [η1 andη2 are each an intrinsic viscosity (dl/g) of the polyester constituting the filament adhered in a side-by-side shape] adhered to each other in the side-by-side shape.
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