Polyester Heating Yarn For Knitted Underwear

Supply Ability

Supply Ability     10000 Kilogram/Kilograms per Week

Packaging & Delivery

Packaging Details   66cm*33.5cm*42.5cm

Lead Time:

2. Q: What is the principle of your heating yarn?

A: As long as a person is alive, the body's metabolism will not stop, and sweat will always ooze out of the skin. Some of the gaseous sweat will combine with the hydrophilic groups on the fibers in the warm clothing, such as -OH hydroxyl group, -COOH carboxyl group, etc. The gaseous sweat will become liquid, and at this time, it will release a part of the heat to make people feel warm. We all know that under normal atmospheric conditions, when the temperature of boiling water reaches 100 ° C, the water will boil and the gasified water vapor will bubble, but when the boiling water pot is away from the fire, the water will not boil. That's because liquid water still needs to absorb a certain amount of energy to turn into gaseous water, which is the heat of gasification phase. So when the gasified water vapor liquefaction on the clothes will also give off phase heat, so that the wearer feels warm. (ps. If you are interested, you can take a dry wipes and lay them flat on your palm. Pour a bottle of water over the dry wipes, and the first reaction of your hand is not cold, but warm.) At the same time, gatized water molecules are also in non-stop random movement, and the fiber of the thermal clothing has a strong adsorption effect on water molecules. The moving water molecules are adsorbed and fixed on the fiber. According to the law of energy conservation, part of the kinetic energy will be converted into heat and play a heating effect. In fact, moisture absorption and heat is a very common phenomenon in nature, but warm clothing has a stronger ability to capture water molecules, so the warmth effect is more obvious. In the textile printing and dyeing discipline, we use the public moisture regain to define the strength of fiber moisture absorption ability.

At present, the mainstream thermal underwear material on the market is mostly made of polyester, viscose, acrylic, spandex and other fiber blends. Polyester fiber: After grinding on the side close to the body, the surface is ground with a layer of fine curly fluff, which can not only improve the comfort of wearing, but also form a layer of heat bad conductor, preventing the body heat from radiating outward. Some polyester fibers are also specifically spun to have a grooved geometry, so that there is more space between the fibers to store air and further improve the thermal insulation effect. Viscose fiber: This kind of fiber products are divided into viscose, Lyocell, modal according to different production processes, but all belong to viscose fiber, but also the use of viscose fiber excellent moisture absorption, can have a good fixed effect on water molecules, in order to achieve more moisture absorption and heat release. Viscose fiber is the key ingredient of heat insulation clothing. Acrylic fiber: excellent thermal insulation effect is known as "artificial wool", the fiber is fine and fluffy to play a good thermal insulation effect, and does not shrink, not easy to corrosion, not easy to damage, is a very common and cheap thermal insulation material. It was the one that made the crackling static of sweaters on winter nights. Because it is made of polyacrylonitrile, it is easy to have a large number of negative charges, which is also its more obvious shortcomings. Spandex fiber: is a kind of high elastic fiber, only a few percent can make the clothing elasticity is extremely obvious improvement, spandex itself can not keep warm, but can make the clothes more elastic, let people wear more comfortable. It is these different functions of the fiber composite made, each other complement each other's strengths and weaknesses, to have both economic and practical thermal clothing, has become the mainstream of the market today.