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Application of optical brightening agent on cotton

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Application of optical brightening agent on cotton:

Optical brightening g agents are easily soluble in water. These can be applied to fabrics just like the dyeing process. That is why they are called colorless dyeing. A special type of finishing process that uses brightening agents to whiten textiles and fabrics is called whitening. The use of a fluorescent brightening agent removes the yellow color and dullness of the fiber and makes the fabric whiter and brighter. https://bdfabric.com/stenter-machine-process-in-textile/

Method of brightening cotton cloth by Flowlight BW:

Recipe:

Flowlight BW → 0.5% (percentage of fabric weight)

Sodium chloride → 5% (percentage of fabric weight)

PH → 6 to 7

Temperature → 50°C

Time → 35 to 45 minutes

Brightening process:

The required amount of water is first taken in a container or padding mangle. The required amount of Flowlight BW is stirred well in the container. After raising the temperature of the solution to 50°C, a cloth is inserted into it. Then after 5 minutes 5% sodium chloride is added and treatment is done for 15 minutes. After 15 minutes, another 5% sodium chloride is added and treatment is done at 50°C for another 25 to 30 minutes. Then the cloth is thoroughly washed and dried. This increases the whiteness of the fabric and also increases the brightness.

Optical brightening agent

Optical brightening agent-Method of brightening cotton cloth by Tinapol 2B:

Recipe:

Tinapol 2B → 0.5-0.8% (percentage of fabric weight)

Hydrolytic agent → 5 grains/liter

PH → neutral

Temperature → 40°C to 60°C

Time → 45 minutes

Brightening process:

Application of optical brightening agent on cotton. Bleached cotton cloth is treated with the mentioned ingredients for 15 minutes. The temperature is then gradually increased to 60°C and the cloth is treated for another 30 minutes. Then the clothes are washed and dried. This increases the whiteness of the fabric and also increases the brightness.

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