The weather is getting colder recently, and the cold winter is coming. Many cold-awaited beauties are beginning to stock up for the winter. Because of the special fabric of the jacket, it has warmth retention, but many people are still worried about the breathability of the jacket. good or not? Today, let’s take a look at the conflict between the warmth and breathability of the jacket?
In fact, the customized breathability of the jacket does not completely conflict with the warmth retention performance. It depends on how you match it. If you choose a two-layer jacket, the inner fleece is used for ventilation and warmth, and it can also transfer sweat. The outer one The jacket is used for wind and water resistance, and it is no problem to hold it to minus 5 degrees.
Here is an explanation of the definition of warmth retention and air permeability. Warmth retention refers to poor thermal conductivity and emphasizes the fine structure at the fiber level. Air permeability refers to good permeability and emphasizes the macrostructure at the yarn level. Air is a good heat insulation layer, and the heat conduction is always from the contact surface of the fiber and the skin to the non-contact surface. Imagine that one fiber is solid, such as polyester, and the other fiber has a cavity, such as cotton. The thermal insulation of cotton is naturally better than that of polyester, because the cavity in the middle increases the difficulty of heat conduction, which is the warmth retention. But from a macro point of view, the structure of the entire fabric, the structure of the spun yarn is looser, and the air has more gaps to freely shuttle, while the long fiber yarn is more compact, and the air can only flow from the yarn to the yarn. The voids of the yarn circulate, but not like the staple fiber, the yarn itself has voids. Of course, the looseness and compactness mentioned here do not refer to the weaving method, but the difference between yarn and yarn. It is undeniable that good ventilation will naturally damage the retention of heat, but the angles emphasized in these two aspects are different and cannot be fully balanced.