Underwear Fabrics Can Not Be Separated From The Three Major Categories

< p > thermal underwear has been holding the banner of high-tech concept in recent years. Last year there were "bamboo charcoal fiber", "nanometer", "infrared heating", "golden velvet", "salad" and so on. This year, there are "HEATTECH", seamless bamboo fiber, regenerated fiber, gold velvet, Australian pearl velvet...

Besides keeping warm, there are fantastic functions of body shaping, sterilizing and skin care.

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< p > how high tech are the thermal underwear? Chen Luo, the clothing department of the Institute of textile and clothing of Guangzhou University, tells us that in fact, the dazzling < a href= "//www.sjfzxm.com/news/index_c.asp" > warm underwear < /a > on the market, many of them replace the raw materials with the production name instead of the hi-tech or novelty fabrics we think.

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< p > < strong > < a > href= > //www.sjfzxm.com/news/index_c.asp > underwear > /a > three categories: < /strong > /p >

Mr. Chen Luo, who has long been in contact with all kinds of fabrics, said that most of the high-tech functions are just gimmicks. As long as we carefully look at the fabric composition on their labels, we can recognize their "P" status.

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< p > the fabric of thermal underwear can not be separated from three categories.

The first category is natural fibers, including cotton, wool, silk and linen. The most commonly used thermal underwear in the market is pure cotton, wool and cashmere.

The second kind of synthetic fiber refers to fabrics made from chemical raw materials such as reed, cotton and wood, such as soybean fiber, modal fiber, bamboo charcoal fiber and so on.

The third category is man-made fiber, pure chemical fiber, such as polyester, acrylic, viscose, etc., mostly from the oil extracted from the fiber processing materials made again.

According to the stipulate of the national textile industry, there are 28 kinds of chemical fibers used in textile industry. If the names of the labels on the labels are beyond those 28, they may be playing with new terms.

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Zhang Xun, a regional retail consultant at the international wool Bureau, said in an interview: the so-called "warm card" and "thermal card" are acrylic fibers. "Sevilla" is a polyester. The "magic card" is a spandex with elasticity. "Lycra" is also the trademark of the DuPont Co, which is an artificial elastic fiber spandex registered by the US P.

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< p > < strong > How do you see the warmth retention performance? < /strong > < /p >

Which of the three kinds of thermal underwear of P has the most warm effect? CCTV has done experiments at the China textile industry association testing center.

Using three equal amounts of water at 37 degrees Celsius, the body temperature is respectively wrapped in three kinds of thermal underwear and put into the 21 degree thermostat.

After half an hour, the temperature changed. The water temperature of the chemical underwear was reduced by 33 degrees Celsius, the natural fiber dropped to 33.6 degrees Celsius, and the artificial fiber modle dropped to 35.2 degrees Celsius.

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P would have thought that the thicker clothes and warmer clothes, the slower heat conduction of thick clothing. The above experiments prove that the thicker thermal underwear is more effective.

Miss Chen Luo explained that it is now necessary to see the thermal conductivity of raw materials. In addition to increasing the thickness, more thermal underwear is made by cutting off the pverse section of fibers so as to make the fibers hollow and keep the static air to reduce the thermal conductivity. These fabrics do not necessarily have thermal energy, but are achieved by reducing the heat exchange between the body itself and the outside world to achieve the effect of thermal insulation, and the air permeability is generally poor.

Mr. Chen introduced the fabric that can produce heat through physical reactions, such as vinyl, but the market product is used less.

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< p > miss Chen Luo believes that the three kinds of fabrics have their own advantages and disadvantages. On the other hand, the thermal underwear is stronger than traditional wool, < a href= "//www.sjfzxm.com/news/index_c.asp" > cashmere < /a > underwear, which is warm and breathable. However, they need hand washing and direct drying. They are troublesome in daily management. Synthetic fibers and man-made fibers can be machine washable and are not easy to wrinkle. They also have environmental protection elements, and the manufacturing cost is relatively cheap.

The same is excellent quality products, natural fiber underwear should be less than 300 yuan, more reasonable, chemical fiber underwear in 100-150 yuan is more reasonable.

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< p > < strong > high tech fabric "Big Bang" - < /strong > /p >

< p > the so-called high-tech materials in thermal underwear mostly change some properties of traditional materials or increase some properties, actually they belong to synthetic fibers or man-made fibers.

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< p > we may as well see the true features of the thermal underwear fabrics commonly seen on the market.

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< p > "hot underwear": most of the viscose fiber, modal fiber, bamboo charcoal polyester fiber, they are chemical fiber or recycled fiber, mostly from the petroleum processing by-products, these materials have long been found, is not a new invention.

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< p > Salam: adding ultrafine particles of ceramic to the chemical fiber acrylic fiber, giving it a heating effect. This technology has been applied to many new fibers.

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< p > "modal fiber": a material with high moisture regain, which can be converted into heat after absorbing water, but wool has the same effect.

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< p > the ingredients of "hi tech" fabrics are basically the same. They are basically man-made fibers such as cotton, acrylic, spandex, polyester, etc.

In recent years, the underwear of "HEATTECH" series, which is newly sold in UNIQLO and autumn and winter, is actually composed of polyester, acrylic, viscose and spandex.

Polyester, also known as polyester fiber, is mainly used for finalization. Acrylic fiber, also known as polyacrylonitrile fiber, has a very good performance in terms of wool and elasticity. Its heat retention is 15% higher than that of wool. It has the name of synthetic wool, but its moisture absorption is almost zero. Spandex is an elastic fiber with high elasticity but poor moisture absorption. Viscose, also known as rayon and viscose filament, has a similar texture to cotton, but its cost is less than half of that of pure cotton. It is smooth, cool, breathable, antistatic and dyed brilliant.

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