A hundred flowers bloom in a scientific and technological fabric to improve warmth retention
In the long history of textile and garment development, there has never been a period when we have such rich material innovation. Traditional natural thermal insulation materials, such as cotton and wool, can no longer meet the needs of modern people for multifunctional thermal underwear. Major brands have made efforts to endow fiber materials with more excellent performance through scientific and technological innovation.
Dralon ®） It is the brand of acrylic fiber innovated and developed by Bayer Company in Germany. The new high-quality environment-friendly fine fiber produced by Bayer Company uses the unique dry spinning ultra-fine profiled section technology to make the fabric fluffy 10% higher than other similar fibers, with good fluffy, covering and warmth retention, which can make the fabric lighter, more resilient and more similar to wool. The thermal underwear made of De Rong and other fibers has a good thermal insulation effect, while it is more portable, slim, and not easy to snag, pilling and deformation.
This year, thermal underwear featuring "wear and warm" coffee carbon became popular in the market. Coffee carbon fiber is made of coffee grounds as fiber raw materials, which are calcined at high temperature and produced by special process. The underwear fabric made of coffee carbon fiber has good functions in heat storage, warmth retention, moisture absorption and ventilation, while retaining the antibacterial and deodorizing properties of coffee carbon fiber.
The "hollow fiber" type fabric is a new type of thermal fabric developed by imitating the special hollow structure of polar bear hair. This kind of fabric fiber has a unique hollow section, which can maintain body temperature and isolate cold air. It can also have a good warm keeping effect without increasing the thickness of the fabric, and can discharge moisture quickly and naturally. It also has a warm, comfortable and lightweight feeling even in cold and wet conditions.
In addition, under the situation of the COVID-19, thermal underwear with antibacterial and health care functions has also become a hot spot in the autumn and winter market. Many brands have launched graphene antibacterial and zinc ion antibacterial thermal underwear, injecting new vitality into the technological revolution of thermal underwear.
Get rid of misconceptions and treat "self heating" rationally
It should be noted that the so-called "self heating" does not mean that the fiber itself will generate heat. The essence of this statement refers to the moisture absorption and heating mechanism of the fiber. This phenomenon of moisture absorption and heat generation is not unique to science and technology fabrics. All kinds of fabric fibers will release heat in the process of moisture absorption. This is because when water molecules in motion are absorbed by fiber macromolecules, the water molecules will convert kinetic energy into heat energy and release, which will increase the temperature.
In short, the fiber absorbs the moisture from the human body and achieves a transient heating effect. Cashmere, wool, cotton, Modal, Tencel and other fibers we usually wear can absorb moisture and heat, which is not a magic black technology. The "self heating" underwear on the market should be scientifically made of fiber materials with high moisture absorption and heat generation. At present, the hygroscopic heating fibers on the market are mainly modified acrylic fibers and polyester fibers.
The degree of moisture absorption and heat generation of conventional fibers is limited. When the fiber moisture absorption reaches saturation, the water will not be absorbed again. When the environmental humidity decreases, the saturated water in the fiber will gradually dissipate, and the fiber will absorb heat in the process of moisture release. At this time, the human body will feel cold. Therefore, the hygroscopic thermal underwear has been circulating in the process of "hygroscopic - exothermic - hygroscopic - endothermic". Generally, businesses will only describe the first half of the heating process, but not the second half of the heat removal process. Therefore, the business promotion of "self heating" function needs to be treated rationally and cannot be easily misled.
Scientific analysis of fabric composition is the key
Before purchasing thermal underwear, it is impossible to truly judge the thermal insulation of thermal underwear by simply looking at the promotional copy of the business. The dazzling advertising language makes consumers confused. Therefore, it is more effective to learn to look at the tag first and understand the thermal performance of underwear from the fabric composition.
Common thermal underwear fabrics are made of polyester fiber, acrylic fiber, viscose fiber and spandex, which often appear in the fabric composition in different proportions. The biggest feature of acrylic fiber is that it has a natural curly and fluffy structure like wool. The fabric made of acrylic fiber can store a lot of air and prevent heat loss depending on this fluffy structure. Acrylic fiber is enough to keep warm but not enough to absorb sweat; viscose fiber is not enough to keep warm although it is breathable; scientific blending of two fibers can learn from each other. Polyester fiber is generally warm, and spandex is mainly added to ensure the elasticity of clothing.
In the face of the mixed consumer market, consumers should keep their eyes open. Under the condition that the thickness of thermal underwear is basically the same, if they want to be warmer, they should choose those with more acrylic fibers, and if they want to be more breathable, they should choose those with more viscose fibers. Those who want to buy German velvet fabric must also recognize the brand logo. If the ingredient logo only contains polyester fiber but no acrylic fiber, it must be fake German velvet.
As the thermal underwear needs to be worn close to the skin, it is very close to the skin, so the health and safety of the product is particularly important for consumers. If you want to buy more safe and reassuring products, you can check whether the products hang STANDARD 100 by OEKO-TEX ® Label. STANDARD 100 by OEKO-TEX ® The certification includes more than 300 kinds of hazardous chemical substances testing, including substances prohibited and regulated by law, chemicals known to be harmful to health but not restricted by law, and health related parameters. Through STANDARD 100 by OEKO-TEX ® The certified products can ensure that there is no harmful substance residue, and the chemicals are used in the production process in a standardized manner, which is more environmentally friendly.
Recently, OEKO-TEX ® A new brand identity has been launched. Logo is based on square and circle, reflecting OEKO-TEX ® The scientific method and the idea of protecting nature. The transition period of new and old labels will be the end of 2024, and the existing labels can be used before the end of 2024, gradually completing the replacement.
source：https://www.tnc.com.cn/info/c-001001-d-3726604.html