Method for decolorizing polyester fabric
AssigneeNan Ya Plastics Corporation
InventorsTe-Chao Liao, Jung-Jen Chuang, Zhang-Jian Huang, Yu-Ti Tseng
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Abstract
A method for decolorizing a polyester fabric is provided, which includes: providing a dyed polyester fabric, in which a material of the dyed polyester fabric contains a dye and a water repellent; providing a composite solvent, in which the composite solvent includes propylene glycol methyl ether (PM) and acetic acid that are mixed together; and performing an extraction process, which includes using the composite solvent to wet the dyed polyester fabric and remove the dye and the water repellent from the material of the polyester fabric by extraction, so as to obtain a reduced polyester fabric.
Claims8
A method for decolorizing a polyester fabric, comprising:
- providing a dyed polyester fabric, wherein a material of the dyed polyester fabric contains a dye and a water repellent;
- providing a composite solvent, wherein the composite solvent includes propylene glycol methyl ether (PM) and acetic acid that are mixed together, wherein in the composite solvent, a weight ratio of the propylene glycol methyl ether to the acetic acid is from 5:95 to 95:5;
- and
- performing an extraction process, which includes using the composite solvent to wet the dyed polyester fabric and remove the dye and the water repellent from the material of the polyester fabric by extraction, so as to obtain a reduced polyester fabric.
Dependencies are inferred from the claim text.