In the textile industry, rubbing fastness is one of the important color fastness indicators of textiles. It refers to the degree of resistance to rubbing and fading of printed or dyed fabrics. It is generally divided into two types: dry rubbing and wet rubbing. Learn about the reasons and solutions for low wet rubbing fastness of fabrics for manufacturers.
The main factors that affect the wet rubbing fastness of fabrics are: the type of fabric, the structure of the fabric, the pre-treatment of the textile (such as desizing, scouring, bleaching, mercerization, etc.); the selection of textile dyes, as well as technology, temperature, and time Whether the control is strict; whether the selection of additives is appropriate and whether they are used correctly; the post-processing of the fabric, etc. In response to these influencing factors, we can improve the wet rubbing fastness of fabrics from the following aspects:
1. Selection of dyes
1.1 Dyes with dual reactive groups and multiple reactive groups can be appropriately selected. Dyes with dual reactive groups are acid and alkali resistant and have high stability;
1.2 Select direct and appropriate dyes;
1.3 Choose dyes with high color fixation rate;
1.4 Choose dyes with high lifting power;
2. Choose gray fabrics with uniform yarn count and smooth surface. When pre-treatment is required, a good pre-treatment agent should be used;
3. Use soft water or deionized water as much as possible for dyeing, which can reduce the impact of calcium and magnesium ions in softened water on dyeing;
4. Special additives can reduce the amount of dye used in finishing to achieve deep and concentrated color effects, and the wet rubbing fastness is also improved;
5. PH value of cloth surface after dyeing;
6. Improved cloth surface characteristics;
7. The floating color after dyeing with reactive dyes needs to be stripped with an appropriate stripping agent after the soap is boiled to remove the floating color and improve the wet rubbing fastness of the fabric;
8. Selection of fixing agent, such as Texnology® R25 wet rubbing fastness enhancer
In short, the above 8 methods can be used to improve the wet rubbing fastness of fabrics.
Focusing on the R&D and application of wet rubbing fastness enhancers, we have rich application experience. Its main products include wet rubbing fastness enhancers, waterproof and oil repellent agents, fluorine-free, etc., which are widely used in home furnishings, clothing, outdoor products and other fields. , welcome to call for consultation: 020-32058382.
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