High-temperature acid-adjusting dyeing method for ammonia-free elastic fabric

CN120683732AInactive Publication Date: 2025-09-23SHENGHONG GRP CO LTD +1
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Patent Information

Application Number
CN202511145401.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-15
Publication Date
2025-09-23
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

During the dyeing process, ammonia-free stretch fabrics are prone to problems such as color spots, color differences, edge wrinkles, chicken claw marks, and color wrinkle marks. Existing technologies make it difficult to effectively control the dyeing rate and uniformity of the dye, resulting in unstable dyeing quality.

Method used

The high-temperature acid dyeing method is adopted to control the dyeing temperature and pH value in stages. The valve opening is adjusted in real time to achieve uniform feeding. Combined with the use of dispersants and leveling agents, the dyeing process is optimized to ensure that the dye enters the fiber evenly.

Benefits of technology

It effectively solves the problem of uneven dyeing of ammonia-free stretch fabrics, improves dyeing uniformity and color fastness, reduces color difference and wrinkle printing, and improves dyeing quality and production efficiency.

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Abstract

The invention belongs to the technical field of textile printing and dyeing, and discloses a high-temperature acid-adjusting dyeing method of an ammonia-free elastic fabric, the ammonia-free elastic fabric contains PET / PBT parallel composite fibers or PET / PTT parallel composite fibers, and the method comprises the operation of adding an auxiliary solution, a dye liquor and an acidic solution into a dyeing machine, the whole technological process comprises a heat preservation stage h, a heating stage i, a heat preservation stage j, a heating stage k and a heat preservation stage l, the temperature of the heat preservation stage h is 100-110 DEG C, and the temperature of the heat preservation stage l is 130-135 DEG C; the temperature of the heat preservation stage j is 115-120 DEG C; the operation of adding the acid solution into the dyeing machine is carried out in a heating stage k, and the heating rate of the heating stage k is 0.5-1.0 DEG C / min; when the acid solution is added into the dyeing machine, the feeding time is 25-40 minutes. According to the method, the situation that coloring is not uniform due to the difference of permeability and diffusivity in the fabric is avoided, the dyeing efficiency is improved, and the dyeing uniformity is guaranteed.
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Citation Information

Patent Citations

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  • Process for dyeing PTT fabric by virtue of microcapsule disperse dyes

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  • A dyeing process for ultra-high elastic fabric based on PBT composite yarn

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  • A dyeing method and implementation device for post-adjusting the pH value of dye solution

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  • High-quality textile printing and dyeing equipment

    CN221545022U