Point 1: Don't be fooled by the novelty of the propaganda vocabulary
It is understood that the national mandatory standards for the naming of natural fibers and chemical fibers have clear provisions, and manufacturers must mark the composition of textile raw materials on the product label, and must use the names specified in the national standards, such as spandex, polypropylene, polyester, etc. At present, the packaging of thermal underwear on the market is similar to "heat card", "Lycra", "thermal energy", "magic card", "super warm" and other promotional words that indicate the effect of warmth, so that consumers are like falling into the clouds, do not know why, in fact, these novel words are just the "gimmick" of publicity, the common heating card and heat card refer to acrylic, Lycra is another name for a man-made elastic spandex. When consumers buy thermal underwear, they don't have to be confused by complicated slogans, they only need to look at the product label logo to understand what material the product is made of.
Point 2: When buying thermal underwear, you should pay attention to the warmth effect
Many thermal underwear promoters do not understand the relevant product quality standards, and often exaggerate the warmth effect of the product when publicizing. In the standard of "knitted thermal underwear", the thermal underwear retention rate is required, the thermal insulation rate is an important indicator to measure the warmth effect of the product, according to the standard, the thermal underwear thermal insulation rate shall not be less than 30%, otherwise it can only be regarded as ordinary knitted underwear. At present, there are some thermal underwear on the market that implements this standard, and the relevant data indicators such as the thermal retention rate are marked on the outer packaging of the product. In addition, the thermal insulation effect of thermal underwear is closely related to its thickness. If consumers want to buy products with good thermal insulation effect, in addition to comparing the materials used in different products, the most important thing is to choose thermal underwear with higher fabric thickness.
Point 3: Choose thermal underwear according to your own needs
Textile fabrics are generally divided into natural fibers and chemical fibers, natural fibers include cotton, silk, wool, velvet and linen, etc., its advantages are strong moisture absorption, strong elasticity, strong softness, good air permeability, comfortable wearing, and the disadvantage is easy to shrink and easy to deform. Spandex, polypropylene, nylon, tencel, viscose, and cellulose fibers are all chemical fibers. Many thermal underwear uses fabrics that add a certain proportion of chemical fibers to natural fibers to overcome the problems of shrinkage, deformation, and pilling of cotton fabrics. Therefore, consumers can choose products according to their needs.
