Distinguish The Authenticity Of Thermal Underwear: The Warmth Retention Rate Of Thermal Underwear >30%

In recent years, the concept war of thermal underwear market has not subsided. It used to be the "card war" of underwear, such as charcoal cards, magic cards, heat cards, etc. the first two years were the battle of colored cotton underwear. This year's warm underwear sales promotion coexists with all kinds of selling points, but the war of all kinds of concepts is still "chattering away". Bamboo charcoal, Salam, modal, eke, air velvet, velvet antler, warm velvet... These strange nouns have become promotional signs for thermal underwear in shopping malls, and dazzling consumers do not know how to choose them. After reading the following articles, we may have a bit of a mind.

Enter the mall or size clothing The store's thermal underwear sales booth will find "group card dancing", and businesses are still playing the role of "concept fabric". "What is Salam? Is it warm?" several customers held a warm underwear to ask the salesperson before a brand thermal underwear shop. The salesperson said, "this is a new kind of material. It's better to add warmth to underwear." In some shopping malls, warm underwear, such as "warm velvet", "Yi Si Si" and "modal", is also placed in a prominent position by businessmen.

"So thin. clothes "Is it really warm?" in a foreign trade clothing store, a customer pointed to a set of "warm" underwear to ask the salesperson, and got such a reply: "this is Lycra, of course, keep warm!" "Lycra only shows that the clothes are elastic, not that they will keep warm." "as long as they are close, they keep warm!"

In sales, these thermal underwear with new terms as signboards are generally given the magic warmth effect by salesmen, and the price is more than tens of yuan to hundreds of dollars than ordinary cotton underwear. "Do not say that consumers do not understand, we ourselves have little knowledge of these thermal materials, and which products will sell well. But from the price point of view, thermal underwear has entered the era of meager profit. In the past, it was two hundred or three hundred yuan a set of underwear now can buy two sets. Miss Zhang, the boss of a lingerie shop, admitted.

"Now new Spin The names of fibers are endless, and the names of some textile fibers are not even understood by many professionals. According to Zhao Chaofeng, deputy director of the complaints center of consumer electronic complaint network, 315, textile fibers are just like two kinds: natural fibers or chemical fibers, which are almost the same in terms of thermal insulation performance.

There is also a professional saying that the "new term" of warm materials on the market is usually the addition of some chemical components in the original polyester and acrylic fibers, which changes the molecular structure and gives the acrylic and polyester a new name. The so-called "bamboo charcoal, Salam, modal, and silk" are actually only additives, adding into underwear, all of them are more or less effective. "Like bamboo charcoal, it is the carbon black extracted from bamboo after high temperature treatment is added to polyester, spandex or acrylic fiber. It does have certain warmth retention effect. But the proportion of these ingredients in underwear is not very high, and the price is not very high compared with the price.

　　 Experts suggest that >30% can only be called warm underwear.

In the "knitting thermal underwear textile industry standard", the thermal rate has become an important criterion for judging the quality of thermal underwear. However, few manufacturers have marked the detailed standard of thermal underwear, but only with "fuzzy concept" promotion, and few consumers know the rigid index of thermal underwear.

"At present, the underwear market is mixed up. Many ordinary underwear are sold under the banner of thermal underwear. According to the relevant standards, the underwear's thermal retention rate should be over 30% before it can be called a thermal underwear. When customers buy thermal underwear, they need to see if there is any data on the warmth retention rate on clothing. If not, they must directly check with the seller for the test report. Zhao Chaofeng said. He also said that air permeability and moisture permeability are also indicators of underwear's warmth. In conclusion, all textiles, known as "thermal underwear", must meet the requirements of relevant standards for their thermal insulation, air permeability and moisture permeability.

According to the industry standard of "knitted thermal underwear, flakes", the requirements for first class products of warm underwear are: the heat preservation rate is more than 45%; the air permeability (mm/s) is in the two regions of the range of more than 180, <250 or >500, or less than 1000, and the moisture permeability (g/m2.d) is more than 3000. The thermal underwear with the above 3 indexes is comfortable to wear.