Product information

 More colors can be customized

We can dye according to Pantone C \ TPX \ TCX \ U\ YKK \ or CMYK color card :
MCQ is 200kg per color.
Color fastness ranges from
1/ washing 3-4 grade to polyester (basic standard)
2/ washing 4 grade up to polyester (good quality)
3/ washing 4 grade up to 6 fiber (if you want best one, please choose this, especially when your shirt has light and dark color mix sewing)

Fluorescent Dyes: Dyes that strongly absorb and radiate fluorescence in the visible light range. The fluorescent reflectance of fluorescent dyes on fabrics depends on the intensity of the ultraviolet light source, the amount of fluorescent substances dyed on the fabrics, and the fluorescent quantum efficiency of the fluorescent substances. Different fluorescent dyes have different fluorescence quantum efficiencies and different dye dosages. Generally, the concentration of fluorescent dyes is about medium color, not too dark and not too light. When the fluorescent dye solution is diluted, the fluorescence intensity is proportional to the concentration. When the concentration of the solution is too large, the fluorescent substance has a "self-extinguishing" reaction, and the fluorescence intensity decreases. If the concentration of the solution is too small, the fluorescence is not obvious and the vividness is not enough.

Different fabrics make fluorescent dyes exhibit different fluorescent properties. For example, dispersed fluorescent yellow 8GFF shows bright fluorescent yellow with green light when polyester, ester fiber and cotton fiber are dyed, but when acrylic fiber is dyed, bright yellow light, less green light and no fluorescence appear.

The pH value has an effect on the fluorescence reflectance. In general, acid and weak acid dye baths (pH between 4-6) are beneficial to improve fluorescence reflectance. Adding a fluorescent enhancer to the fluorescent dye helps to improve the fluorescent reflectance; when the fluorescent dye is mixed with non-fluorescent dyes, the fluorescent reflectance decreases, the proportion of non-fluorescent dyes increases, and the fluorescent reflectance decreases rapidly.

The principle of fluorescence

Fluorescence is a photoluminescence phenomenon. When ultraviolet light, or some kind of light, shines on a fluorescent substance, the substance absorbs energy consistent with its characteristic frequency and transitions from the ground state to a higher-energy excited state.

Molecules in an unstable excited state transfer and relax to the lowest vibrational energy level of the excited state in a short time, equilibrate to the excited state, and then fall back to the higher vibrational energy level of the ground state. The energy attenuates in the form of fluorescence during the fallback process, and the fluorescence disappears immediately when the irradiation is stopped.

Fluorescent dyes for textiles:

1. Fluorescent whitening agent

2. Disperse fluorescent dyes

3. Fluorescent paint

Disperse fluorescent dyes have small molecules and do not contain water-soluble groups in their structure. They are uniformly dispersed into the fiber in the dye solution with the help of the dispersant. After the pad dyeing solution, it is dried, and then hot-melt treatment is carried out. Under the action of high temperature, the dye deposited on the fabric can diffuse into the fiber in the form of a single molecule, and complete the dyeing of chemical fiber in a very short time.

Because the fluorescent dye molecules are fused together with the fibers, the fabric has good rubbing fastness and washing fastness, but the light fastness is poor.

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labor wear, outdoor vest,  high visible sleeves

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