How to identify the hygroscopic and moisture wicking properties of fabrics? أداة الاختبار –

How to identify the hygroscopic and moisture wicking properties of fabrics?

In recent years, people have increasingly high demands on the comfort and functionality of clothing fabrics. As people spend more time outdoors, casual clothing and sportswear have become integrated and integrated with each other. The trend is also increasingly favored by consumers. The fabric of this type of clothing not only requires good comfort, but also requires that when sweating occurs during activities, the clothing does not stick to the skin and does not produce a feeling of cold, damp and heaviness . Therefore, new requirements for moisture absorption and sweat wicking functions have been put forward for fabrics. However, consumers in general are confused about moisture absorption andperspiration of tissues. In fact, there are two concepts, namely the absorption of moisture and the removal of moisture from the fabric.

First, let’s talk about moisture absorption. Polyester is an example of a synthetic hetic fiber. In fact, it has low water absorption and poor moisture permeability, and it is easy to feel stuffy during activities. Cotton is an example of a natural fiber. It has good hygroscopicity and is comfortable to wear, but when a person sweats a lot, the cotton fibers swell due to moisture absorption and stick to the skin. At the same time, the water will slowly diffuse, causing the human body to feel cold and damp. Therefore, for all fabrics, especially polyester products, treatment with hydrophilic additives at the finishing stage is a good way to improve moisture absorption.

Butis it over? Can you keep the wearer dry by solving moisture absorption? Moisture absorption = perspiration? Of course not. Only when the moisture absorbed in the fabric is discharged as much as possible to the surface of the fabric and the moisture is completely evaporated under sunlight and good ventilation can the user stay dry and comfortable. comfortable.

The moisture re-dissipation of the fabric mainly depends on the physical structure of the fiber. Gaseous moisture evaporated from the skin surface is first absorbed by the fabric (i.e. moisture absorption, note that the fabric absorbs moisture, not the fiber). Then, the capillary effect produced by the pores (capillary pores, micropores, grooves) inside the fiber and the spaces between the fibers cause the absorption and diffusion of moisture between the fabrics. In this way, the moisture migrates to the surface of the fabric and evaporates.re, thus completing the moisture removal process. Therefore, absorbing moisture alone is not enough. For some ordinary synthetic fiber fabrics, only hydrophilic additives are used for finishing, and claims of moisture absorption and \"sweating\" lead us all to misunderstanding.

In the production of synthetic fibers, changing the shape of the spinneret hole and creating many grooves in the longitudinal direction of the fiber can increase the specific surface area of ​​the fiber. This enhances the moisture-wicking properties of the fibers, wicking away sweat through the wicking effect of these grooves. Like the polyester produced by INVISTA for COOLMAX? Moisture-wicking fabric certification. Its cross section is a single flat cross-sectional shape, and the fiber surface is longitudinally formed into four grooves. Its specific surface is 20% larger than celle of the classic round, the perspiration performance is therefore higher than that of classic polyester. Particular attention should be paid to the following points: the fibers of the clothing are treated,Invista\'s new \"CCOO\" type polyester has a very reduced cross section (plastic deformation) so that it does not wick away perspiration effectively, allowing maximum evacuation of perspiration. ---The C-shaped guide groove is not easy to deform. In addition, for consumers, the function of the yarn is important, but the quality and function of the fabric are more important to ensure the functionality of the clothing.

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