When Cold Air Comes, Don'T Be Vague About &Nbsp.

Facing the dazzling thermal underwear, aunt Mo is a little confused.

There are more than ten brands of flag guns, three guns, suitable and cool, ice and jade, pallando, kangaroo, warm cotton, thick cotton, cotton wool, wool bamboo charcoal, milk protein fiber and coral velvet.

All kinds of materials make people look like clouds and mist.

Aunt Mogao finally picked up a brand of hot poly Plush underwear, which is known as the latest "touch" in Dongli, Japan.

What kind of materials are woolen bamboo charcoal, milk protein fiber, and mulberry fox velvet? These gimmicks of warm underwear are really as warm as they are on the package. Bamboo charcoal fiber absorbs harmful chemicals and effectively blocks harmful electromagnetic waves and helium. Yesterday, Professor Zhou Wenlong of the school of materials and textiles of Zhejiang Sci-Tech University analyzed them professionally.

Sales words: "XX fiber" and "XX velvet"

Disease: "high tech ingredients less, low thermal insulation"

The reporter's visit found that the most striking words on the packaging of the major brands are all kinds of high tech fibers and many kinds of velvet.

Fiber mainly includes "bamboo charcoal fiber", "milk protein fiber", "modal fiber" and so on, and velvet contains "coral velvet", "ginseng velvet", "mulberry fox hair" and so on.

However, these "XX fiber" and "XX velvet" thermal underwear are basically made of cotton and polyester fiber. A brand of wool and bamboo charcoal thermal underwear is taken as an example. The fabric is 100% cotton, 84% polyester fiber, 10% spandex, 3% wool, 3% recycled fiber (bamboo charcoal fiber) and 100% polyester fiber.

Once these thermal underwear is labeled "XX fiber" and "XX velvet", its price ranges from 100 yuan to 300 yuan, which is 2 to 3 times the price of ordinary thermal underwear.

Zhou Wenlong: it is undeniable that with the progress of science and technology, more and more enterprises are trying to add more scientific and technological elements to products, so as to increase the performance of products.

However, judging from the current market, these gimmicks of "XX fiber" and "XX velvet" have a relatively low proportion in thermal underwear, which can play little role in the thermal insulation performance of underwear.

In addition, many polyester fibers, which are high in many underwear, are made of polyester as the main raw material, adding some functional masterbatch. In fact, it is also a kind of polyester. Its main function is small moisture absorption, acid resistance and good light resistance.

Its thermal performance is not as good as cotton.

Sales words: keep warm and feel hot.

Illness: "it is difficult to verify the effectiveness of the function, or just a promotional gimmick".

Underwear with high-tech brand emphasizes its function without exception in the sales process.

For example, a bamboo charcoal fiber thermal underwear, its packaging box marked the eight miraculous effects of bamboo charcoal fiber, such as absorbing harmful substances, humidity two-way regulation function, effectively blocking harmful electromagnetic waves and helium, natural release of far-infrared thermal effect.

Another kind of hot poly Plush warm underwear, known as the latest "tactile heating fiber" in Dongli, Japan, can instantly absorb moisture from human body surface into heat energy and keep underwear warm and dry.

The reporters found that these magic high-tech underwear, only 20% of the middle layer of bamboo charcoal fiber; the other contains the content of Dongli fever fiber is unknown, it is only indicated that it contains this component.

For those who claimed to be able to enhance their metabolism and human immune function, even with the function of weight loss and skin nourishing, when journalists were asked for the reasons, the sales staff had no exception with "high technology" to prevaricate.

Zhou Wenlong: the composition of textile materials, its thermal function as long as it can block heat convection and conduction, which mainly requires manufacturers to reduce the hollow degree of materials.

The higher the hollowness of the material, the greater the function of its insulation. The greater the barrier between the cold air outside and the heat of the human body, the better the warmth retention effect.

At present, many brands claim heat storage, thermal insulation and even heating function in the sales process. If there is no certificate of authoritative inspection agency, it is likely to be just a promotional gimmick, and its functionality is doubtful.

From the current situation, bamboo charcoal fiber has the function of pmitting far infrared rays and keeping heat and keeping warm. However, the problem is that the proportion of bamboo charcoal fibers contained in most products is not high, and the color of heat storage and heat preservation is doubtful.

Sales words: nanomaterials, cutting-edge technology

Disease: "a bubble will fade, dare not close to wear."

Now, some high-tech technology is a trend in textiles, but for the simple underwear, there are so many attractive functions that I am afraid it will be discounted.

These thermal underwear, such as "nano", "bamboo charcoal" and so on, sometimes even fade in quality.

Such a situation as Mo Ma encountered, spent hundreds of dollars to buy a set of thermal underwear for her daughter, and not to mention the high-tech functions of underwear, the color of a bubble is fading, so that Aunt Ma is very worried: This is a close fitting dress, I do not know if there will be any danger.

In addition, many consumers are worried about the nano materials claimed in the current market: whether nanotechnology is applied to clothing is mature or not, and it will cause harm to the human body.

Zhou Wenlong: the reason why clothes fade is mainly because the color fastness of clothes is not good, and the color is not fixed.

Dyestuff and some chemical components of clothing can cause chemical irritation to human skin and cause dermatitis to some people.

If you stop wearing this dress, you will gradually disappear.

New clothes should be cleaned once before wearing, not only to wash away some dirty ingredients in garment processing, but also to wash off the first color of clothes with poor color fastness.

After several times of washing, the fading will slow down, but it can not be prevented.

Underwear clothing is therefore particularly demanding for color fastness.

In addition, nano material underwear is best to wear less, some of the nanomaterials have not been detected by authoritative departments, and even have the risk of cancer.

Personal suggestion is best to use underwear made of natural materials, such as cotton and wool. Some regenerated cellulose fibers such as modal are also good underwear materials.

Consumption guide

Less sweaty people

At present, the thermal underwear sold on the market is mostly made of composite sandwich materials. Some of them are sandwiched with a layer of fluffy chemical fiber or film in two layers of ordinary cotton fabric, which can resist heat by exchanging heat between the skin and the outside.

As a result, the heat preservation effect is good, but the air permeability is poor.

Experts believe that wearing such underwear is not conducive to sweat, so sweating people had better not choose this underwear, it is easy to catch a cold.

In addition, the plastic film of the underwear is rubbing easily with the heat preservation fiber, which tends to accumulate static electricity. These static electricity can produce lots of cations around the body, reduce the moisture content of the skin, and increase the dandruff, especially for those whose skin is dry and sweat less. The longer they wear the skin, the longer the skin is, and even the skin itch, causing contact dermatitis, eczema and other diseases.

When choosing warm underwear, do not blindly follow suit and choose regular brand.

Although the traditional cotton underwear is relatively weak in warmth retention, it is the safest for the human body, and the soft cashmere trousers and cashmere sweater can be comfortable and warm for the winter.