The working principle of one-way moisture-conducting fabric is that the inner layer of the fabric (the surface that contacts the skin) is mostly hydrophobic and a small part is hydrophilic, while the outer layer of the fabric is hydrophilic. Therefore, the fiber selection for unidirectional moisture-conducting fabrics is wide. You can choose two fibers with different hydrophilic/hydrophobic properties (the same fiber can be finished with different hydrophilic/hydrophobic properties) for weaving through a special interweaving process; you can choose hydrophilic The hydrophobic fiber can be partially water-repellent on the inner layer of the fabric; you can also choose a fabric made of hydrophobic fiber to have a hydrophilic finish on the outer layer. In practical applications, the interweaving method is rarely used in the weaving, dyeing and finishing processes due to more complicated control. However, after hydrophilic finishing is applied to the outer layer of the fabric woven from hydrophobic fibers, the outer layer has poor water absorption performance and durability, so it is rarely used. The most commonly used fabrics are fabrics made of hydrophilic fibers with water-repellent finishing on the inner layer, among which cellulose fibers are most commonly used. For one-way moisture-conducting and quick-drying pure cotton fabrics, water-repellent finished and unfinished pure cotton yarns can be interwoven into hydrophilic/hydrophobic double-sided structural fabrics, or the reverse side of the cotton fabric can be made water-repellent through printing. Organize to achieve. In the same way, other cellulose fibers (such as viscose) can also be realized using similar methods. However, it should be noted that the water vapor conductivity of cotton fabrics after water-repellent finishing will decrease. In addition, moisture-absorbing and quick-drying finishing agents can be used to treat pure cotton fabrics, composite finishing methods or chemical grafting methods can be used to finish the fabrics to achieve the moisture-absorbing and quick-drying function. In addition to cotton fibers used as the outer layer of fabrics, other fibers (such as linen fibers) are also used to weave unidirectional moisture-wicking fabrics. By comparing the one-way moisture conductivity of polyester and cotton/polyester products, the results show that the one-way moisture conductivity of linen/polyester knitted fabrics is better than that of cotton/polyester products. So far, in addition to cellulose fibers, modal, spandex and nylon fibers have been used as unidirectional moisture-wicking fabrics respectively.
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