During the dyeing process, there are often various reasons that lead to poor dyeing results. What are the factors that affect the success rate of dyeing?

1、The influence of dyes

1. Different batches of dyes have batch differences, and each batch of dye needs to be tested for batch differences;

2. Improper storage and management of dyes in the material room, causing dyes to become damp or cross colored;

3. Improper management of the laboratory mother liquor lifespan and failure to replace it on time;

4. The dilution ratio and concentration of the dye mother liquor in the laboratory are poor, and the manual straw control is improper;

5. When choosing dyes with similar compatibility, there may be competition during the color matching process, resulting in color differences before and after.

2、 The influence of additives

1. Pay attention to the differences in different batches of additives, and in addition, pay attention to stirring when using each barrel of additives;

2. Different amounts of additives can cause color changes and final fixation. Pay attention to controlling the amount of additives used between laboratory samples and workshop production.

3、 Color difference caused by grey fabric

1. The raw fabric for making small samples should be consistent with the batch of fabric produced in bulk.

2. The grey fabric used for making small samples has been stored for a long time and is greatly affected by moisture or gas, resulting in color differences between large and small samples. The grey fabric in the laboratory should be frequently changed and wrapped in a thin film, completely separated from the dyeing and chemical materials in the laboratory, to avoid the influence of harmful gases.

4、 Color difference caused by process conditions

1. The workshop production must strictly follow the process issued by the laboratory.

2. Bath ratio, dyeing (insulation) time, and dyeing pressure have important effects on coloring. Different dyeing bath ratios result in significant differences in color and light. Extending the dyeing (insulation) time at a certain temperature will significantly increase the dye uptake.

5、 The impact of post finishing on color brightness

1. The laboratory and workshop post-processing are not unified, and different post-processing processes have varying degrees of impact on color brightness. For example, temperature control and the use of fixing agents can seriously affect the color results.

2. There are differences in the sorting between the laboratory and the workshop, and no corresponding adjustments have been made.

6、 The impact of water quality on color difference

1. The water quality used for making small samples should be consistent with that used for large-scale production.

2. There may be differences in the composition and content of impurities, pH value, and hardness of water quality in different periods, which can also cause color differences. For light colors and white colors, soft water should be used as much as possible to reduce the impact of water quality.

7、Machine equipment impact

1. The weighing accuracy is insufficient, and the accuracy of the laboratory weighing balance is poor after being used for a long time, especially when weighing small samples, the error has a more significant impact on the large sample.

2. Inaccurate indication of dye tank gauge. This includes instrument malfunction, instrument failure to be calibrated according to regulations, and air pressure leakage.

8、 Human influence

1. The employee's operation was not carried out according to regulations. This mainly refers to cultivating employees' sense of responsibility and conscience, while maintaining their stability (proficiency, experience, and technical accumulation are related to minimizing errors), etc.

2. Involving all aspects of human resource management issues.