| 摘要 |
PROBLEM TO BE SOLVED: To provide a textile cleaning method that can (almost) completely remove oligomer and dye residue and can obtain excellent cleaning effect in the treating method using a treatment apparatus of a type such as liquid circulation treatment apparatus. SOLUTION: In the high temperature treatment step where textile is set in the treatment tank and the treatment solution is circulated through the outside and inside of the treatment tank as the solution is heated up to a high temperature on the way of circulation with an indirect heat exchanger and allowed to contact with the textile and in the solution-exchanging and washing step where the high-temperature treatment solution is gradually discharged from the treatment tank and the washing water is gradually fed in the treatment tank. At this step, the discharge of the treatment solution and the supply of the washing water are kept equal so that the liquid volume in the tank is constant. In this step, the discharged high-temperature treatment solution and the washing water are directly heat-exchanged thereby the temperature of the treatment liquid is maintained at a prescribed temperature for a prescribed time. COPYRIGHT: (C)2006,JPO&NCIPI
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