PURPOSE: To obtain colored yarn structure having excellent dyeability and durability by providing yarn structure with an acrylic resin at a stage before or after dyeing of the yarn structure and irradiating the yarn structure with ultraviolet light.
CONSTITUTION: Yarn structure, especially polyester yarn, is provided with an acrylic resin containing a light initiator at a stage before or after dyeing and irradiated with ultraviolet light having ≤300nm wavelength component so that the yarn structure is extremely darkly colored to give colored yarn structure having slight change of color by washing and dry cleaning and excellent dyeability in an industrial production level. An acrylate containing one or more vinyl groups may be used as the acrylic resin.
KOIDE KAZUYOSHI
KAWAI FUMIKO
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