Printing and dying process for improving easy dyeing property of polyester fabric

Abstract

The invention discloses a printing and dying process for improving easy dyeing property of a polyester fabric. The dyeing prescription of the polyester fabric is composed of a disperse dye, glacial acetic acid and a dye leveller. The process comprises the following steps: checking whether the fabric appearance has smudginess or defects or not, after the inspection, placing the fabric for 12 to 24hours to eliminate the tension generated when the fabric is printed, when the fabric is placed for the required time, placing the polyester fabric in a washing machine, keeping the water temperature at 60 to 90 DEG C, and repeatedly cleaning the material for three times. The printing and dying process is characterized in that the disperse dye having small molecules, weak polarity, poor solubilityin water and good compatibility is used for dyeing polyester, the polyester fabric is more easily printed and dyed, and the easy dyeing property of the polyester fabric is improved, and the temperature and time of the reduction cleaning are strictly controlled, the color fastness of the polyester fabric after printing and dyeing is improved, and the problem that the polyester fabric is easily fading is avoided.

Description

technical field [0001] The invention relates to the technical field of polyester printing and dyeing, in particular to a printing and dyeing process for improving the dyeability of polyester fabrics. Background technique [0002] Polyester is an important variety of synthetic fibers and is the trade name of polyester fibers in my country. It is produced by esterification or transesterification and polycondensation reactions using purified terephthalic acid or dimethyl terephthalate and ethylene glycol as raw materials. The obtained fiber-forming high polymer - polyethylene terephthalate, is made into fibers by spinning and post-processing. [0003] There are many types of polyester fiber fabrics. In addition to weaving pure polyester fabrics, there are many products that are blended or interwoven with various textile fibers, which makes up for the shortcomings of pure polyester fabrics and exerts better wearability. Polyester fabrics are heading towards The naturalization of...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a printing and dyeing process for improving the dyeability of polyester fabrics, which solves the problem that the existing polyester fabrics have no reactive groups and no hydrophilicity during the dyeing process. Polar groups, generally all kinds of charged dyes are difficult to dye, resulting in polyester fabrics can only be printed and dyed in very light colors, and its color fastness is poor and easy to fade. At the same time, the existing polyester fabrics before printing and dyeing, Insufficient cleaning and treatment of polyester fabrics may easily lead to various color spots and stains on the outer surface of polyester fabrics after printing and dyeing, which will affect the appearance of polyester fabrics