Moisture Absorption Is Not Equal To Sweat. Do You Really Know The Fabric?

< p > in recent years, people's requirements for comfort and functionality of a href= "//www.sjfzxm.com/news/index_c.asp" > fabric > /a > are getting higher and higher. With the increase of people's outdoor activities time, the trend of mutual penetration and integration of casual wear and sportswear is increasingly favored by consumers. The fabric of this kind of clothing requires not only good comfort, but also a sweat when it is full of activities. Clothes will not stick to the skin and produce a cold, wet and heavy feeling. Therefore, the new requirements of moisture absorption and sweating function were put forward. < /p >
< p > however, the general consumers will be confused about the fabric's < a href= "//www.sjfzxm.com/business/" > moisture absorption < /a > sweat. In fact, this is the two concept, namely moisture absorption and dehumidification of fabrics. < /p >
< p > first, let's talk about moisture absorption. Synthetic fiber takes polyester as an example. In fact, its water absorption is small and its moisture permeability is poor. It is easy to produce stuffy heat when it is active. Natural fiber takes cotton as an example, its moisture absorption performance is good and its clothing is comfortable, but when the sweat volume of people is slightly larger, the cotton fiber will expand due to moisture absorption and paste on the skin, and at the same time, the moisture dispersion speed is slower, which causes a cold and wet feeling to the human body. < /p >
< p > therefore, for all fabrics, especially polyester products, the use of hydrophilic auxiliaries in the finishing stage is a good way to improve moisture absorption. < /p >
< p > but is that over? Does it solve the problem of moisture absorption and keeps the wearer dry? Moisture absorption = perspiration? < /p >
< p > of course not! Only when the moisture absorbed in the fabric is discharged to the surface of the fabric as far as possible, can the water be fully evaporated under the condition of sunlight and good ventilation, so as to keep the wearer's dry and comfortable. < /p >
< p > fabric wetting mainly depends on the physical structure of the fiber. The vaporized moisture evaporated from the skin surface is first absorbed by the fabric (that is, moisture absorption, that is, fabric moisture absorption, not fiber!), and then the capillary effect of the holes in the fiber (pores, pores, trenches) and the gaps between the fibers causes the moisture to adsorb and diffuse between the surfaces. In this way, moisture moves to the surface of the fabric and evaporates, thus completing the process of dehumidification. < /p >
< p > therefore, only moisture absorption is not enough. For some ordinary synthetic fabrics, we only use hydrophilic auxiliaries for finishing, and then flaunt moisture absorption "sweating", which has led us all to misunderstandings. < /p >
< p > in the production of synthetic fiber, changing the shape of the spinneret hole and creating many grooves in the longitudinal direction of the fiber can improve the specific surface area of the fiber. This improves the moisture conductivity of the fibers and achieves the effect of sweating through the wicking effect of these grooves. For example, the COOLMAX polyester breathable and sweaty fabric is certified by the company. Its cross section is unique flat cross shape, and the fiber surface is longitudinally divided into four trenches. The specific surface area is 20% larger than that of the conventional circle, so its sweat perspiration is higher than that of conventional polyester. Special attention should be paid to the following aspects: the fibers in the ready-made garments have been greatly damaged due to the manufacturing process, resulting in plastic deformation. Therefore, the effect of perspiration is greatly reduced, and the new C C O O polyester fiber can alleviate the plastic deformation to a greater extent. It can maximize the sweating function. The -----C type guide groove is not easy to deform. Besides, for consumers, the function of the yarn is important, but what is more important is the a href= "//www.sjfzxm.com/news/index_s.asp" quality and /a function. < /p >