Reasons and solutions for poor water repellency of textiles

Poor water repellency ⑴Form: The water droplet rolling effect is poor, and the fabric may even get wet. ⑵Cause: ① The raw silk sizing has not been washed, and it cannot be washed w...

Poor water repellency

⑴Form: The water droplet rolling effect is poor, and the fabric may even get wet.

⑵Cause:

① The raw silk sizing has not been washed, and it cannot be washed with water after dyeing. The fabric contains residual surfactant.

② The amount of water-repellent agent is too small, the rolling residue rate is too low, and the vehicle speed is too fast.

③The raw silk is not completely dry.

④The baking temperature is too low, which affects the cross-linking of the water repellent agent.

⑶Solution:

① The water-repellent finished silk must be clean and free of impurities.

② Increase the amount of water-repellent agent; master different padding ratios for different fabrics, and the padding speed should not exceed 24m/min.

③After drying, perform water-repellent finishing; determine the appropriate process conditions.

④Strictly abide by the process conditions.

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