manufacturing method of processing polyester fiber fabric

摘要

PURPOSE: To obtain an etched fabric having extremely sharp openwork pattern and bright hue by carrying out burn out printing of a fabric comprising a modified polyester fiber and an unmodified polyethylene terephthalate fiber. CONSTITUTION: At least a part of jersey knitted by using twisted union yarn comprising a modified polyester fiber composed of polyethylene terephthalate obtained by copolymerizing adipic acid with terephthalic acid and 5 sodium sulfoisophthalic acid and having 75d/24f and unmodified polyethylene terephthalate fiber having 75d/36f is colored with a dye for ground dyeing. Then, an etching agent containing a polyhydric alcohol ethylene oxide adduct and dye-dividing agent such as tin (II) chloride obtained by blending the etching agent with the etching agent with the dye-dividing agent and a dye which is undecomposable to an alkali is printed to the colored jersey so that at least a part of the color discharge agent is doubled with the colored part and the printed fabric is heat-treated at 100-240 deg.C and subjected to alkali treatment. Thereby, elution of the modified polyester fiber of the printed part and decolorization or elimination of colored unmodified polyester fiber are carried out by alkali treatment to provide the objective etched fabric.