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Why can a polyester fabric pass colour-fastness testing after dyeing but fail after heat setting? Thermomigration may be responsible. Discover how disperse dye molecules redistribute during thermal finishing, why certain softeners increase the risk, and how textile mills can reduce rubbing and washing-fastness problems.

Can a polyester sportswear fabric feel soft but perform poorly at managing sweat? Certain silicone softeners can reduce fabric wettability and interfere with moisture transport. Discover the difference between hydrophobic and hydrophilic silicone finishes, how they affect dry-fit performance and what manufacturers should test before bulk production.