Summary of reasons why fabrics have poor waterproofing effect

1. Reason:
Through experiments, it is believed that there are only three main reasons for poor initial water repellency:

First, finishing the cloth; the scouring or coloring cloth is not cleaned sufficiently, and scouring agent, leveling agent, dispersant, penetrating agent and other additives remain on the cloth.
Second, the problem of working fluid is that the concentration is improperly used or the concentration changes during finishing; or, the working fluid is affected by mechanical stirring, temperature, mixing chemicals, etc., and its stability is affected. Then there is the improper preparation sequence of working fluid.

Third, the reasons for finishing conditions include improper selection, or insufficient and uneven drying and baking conditions. The main countermeasures to solve the above problems can start from the following aspects.
2. Main countermeasures
a. Before water-blocking finishing, the finishing cloth should be fully washed.
b. Choose one suitable for fiber finishing. Newly prepared working fluid may be continuously added during finishing. Strengthen the temperature control of the finishing cloth to prevent the hot cloth from entering the studio directly after drying. Understand the compatibility of the blended chemicals and prepare the working solution according to the mixing sequence. When other additives are diluted with warm water, they need to be cooled before adding the Deco Nano Series. The prepared working fluid must be used within 24 hours.

c. The drying and baking temperatures should be uniform, and the baking temperature should not be too low, generally above 140°C.

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