Down jacket as a necessary item for winter warmth, its thermal performance is one of the important considerations when we choose to buy. The thermal performance of down jacket mainly depends on the selection of its fabric. The following will describe how to judge the thermal performance of down jacket fabric.
First of all, we need to understand several key indicators of down jacket fabric, including velvet content, pompom content, velvet strength, pile elasticity, etc. The thermal performance of down jacket mainly depends on the wool content, that is, the content of down. The thermal performance of down is more outstanding, which can effectively maintain the heat of the body, so the higher the content of velvet, the better the thermal performance. The pompom content reflects the quality of down. The larger and fuller the pompom, the better the thermal performance of down. The strength and elasticity of down reflect the texture and strength of down, and also affect the warm effect of down jacket.
Secondly, we can preliminatively judge the thermal performance of down jacket fabric by observation and feel. In appearance, we can observe the degree of fineness of the fabric, the thickness and evenness of the pile. In general, fine fabrics are easier to block the penetration of cold air from the outside world, and are also more able to maintain the heat of the body. The thicker and more uniform the pile, the better the quality of down and the stronger the thermal performance. In addition, feel is also one of the important indicators to judge the thermal performance of fabrics. Soft, delicate fabrics are easier to maintain body heat, relatively good thermal performance.
Further, we can conduct experiments on thermal properties. First of all, the down jacket can be placed in the cooler, and the thermal performance can be judged by measuring the temperature change of different fabrics under the same conditions. In this way, we can quantitatively compare and evaluate the thermal properties of different fabrics. In addition, an infrared thermal imager can be used to observe the heat distribution of different fabrics during physical activity, so as to judge the thermal performance of the fabric.
In addition, we can also preliminarily judge the thermal performance of the fabric according to its breathability. Breathability refers to the ability of fabrics to allow water vapor and sweat to pass through, and highly breathable fabrics can expel water from the body, keeping the body dry and comfortable. Generally speaking, good breathable fabrics are more able to adapt to the needs of physical activity, but also to keep the body warm.
Finally, we can judge the thermal performance of the fabric by understanding its manufacturing process and technology. High-quality fabrics usually use advanced production processes and technologies, such as filling technology, splicing technology and so on. Filling technology can ensure the fullness and uniformity of down, so as to improve the thermal performance; Splicing technology can reduce the gaps in the fabric and reduce the penetration of cold air from the outside world.
To sum up, the thermal performance of down jacket fabrics can be judged by understanding the key indicators such as velvet content, pompom content, velvet strength, and fluffy elasticity, observing the appearance and feel, conducting experiments on thermal performance, and understanding the breathability and manufacturing process of the fabric. These methods can help us make a more accurate choice and buy a down jacket with a better thermal effect.
