The autumn wind is coming, and summer is slipping away. Summer is a season easy to sweat. After a good sweat, it can make us feel happy, but at the same time, many people are worried. After sweating, clothes are easy to fade. In fact, this is likely to be caused by the unqualified color fastness of your clothes to perspiration.

Colour fastness to perspiration

There are millions of effective sweat glands on human skin, and the forehead, armpits, chest, back and palms sweat more; therefore, clothes often worn in summer, such as shirts, T-shirts and other clothes, will fade seriously in these parts. As we all know, the composition of human sweat is complex, the main component of which is salt, which varies from person to person. Sweat is acidic and alkaline. The short-term contact of textiles with sweat may have little effect on its color fastness, but long-term contact with the skin and sweat will have a greater impact on some dyes. Clothing with unqualified dye fastness is easy to transfer dyes from textiles to human skin through sweat, etc. The molecules of dyes and heavy metal ions may be absorbed by the human body through the skin and endanger health.

How to improve the color fastness to perspiration

Improve the color fastness of the fabric to perspiration:

1. The most important way is to choose dyes reasonably, especially dyes with high fixation rate and good stability should be used.

2. Reasonably formulate and control the dyeing process, strengthen the fixing conditions, and form a covalent bond with high stability, so that the dye can be fully fixed. For example, when dyeing dyes with poor reactivity, a catalyst can be used, or an appropriate fixing agent can be used, or the color can be fixed at a relatively high temperature.

AVENO Machine Recommend:

Fabric Perspiration Tester AC08

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