What materials can keep warm? Various kinds of materials are made from merino wool, synthetic fiber, or animal fur. What would you choose to protect yourself from the cold? Furthermore, do you prefer to wear a lot or just a coat while working out? When people are skiing or climbing, they must be able to move flexibly. So choosing a coat with thermal fabric that can keep you so warm is definitely better than wearing a lot. Far Infrared Radiation fabric might be your good choice.
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What is Far Infrared Ray?
Far infrared (FIR) is a region in the infrared spectrum of electromagnetic radiation. Far infrared is often defined as any radiation with a wavelength of 15 micrometers (μm) to 1 mm (corresponding to a range of about 20 THz to 300 GHz), which places far infrared radiation within the CIE IR-B and IR-C bands. The long-wave side of the FIR spectrum overlaps with so named terahertz radiation. Different sources use different boundaries for the far infrared; for example, astronomers sometimes define far infrared as wavelengths between 25 μm and 350 μm.
Visible light includes radiation with wavelengths between 400 nm and 700 nm, meaning that far infrared photons have tens to hundreds of times less energy than visible light photons. (Far infrared definition from Wikipedia)
What is Far Infrared Radiation (FIR) Fabric?
FIR material can be applied to textiles by techniques such as coating, laminating, and spinning. The FIR fabric technology from SPORTINGTEX® is to add Nanoceramic particles to polymers with a unique formula that the particles embed in the textile. When applied to the garment products like blankets or bedding sheets (especially with the human body), the ceramic materials can emit Far Infrared Radiation.
The more nano ceramic powders amounts are added into the fabric yarn, the emissivity of Far Infrared Radiation increases. However, most people believe that a high percentage of ceramic concentration can be added into fiber to get greater emissivity. Technically, the concentration of FIR powders should not exceed 5%. Powder concentration above 5% will lead to a decrease in the endurance of fibers. With the 5% concentration of nano ceramic powder, the emissivity of Far infrared (wavelength of 2-22µm, 25°C) can reach 0.88~0.90 from reliable testing institutions. It is very important to make sure the textile suppliers provide relevant testing reports for protection.
Textiles with ceramic powder not only absorb the sunlight, it also absorbs the heat from the human body, to reflect it to the body as FIR rays. When the heat energy from the human body is transferred to these ceramic particles, the temperature is maintained at sufficiently high levels and then emits FIR back to the body to keep warm and comfortable.
The applications of Far Infrared Radiation (FIR)
Far Infrared Radiation products have been known for quite some time. FIR lamps, saunas, etc. which are used to deliver radiation to relieve and relax our busy life. The textile industry is using the technology to apply FIR nanoceramic into the fabrics for functional garment collections, and some people use the term “Thermal Fabric” to indicate the fabrics are warm materials.
Surprisingly, ceramic fiber is not the only material to have such magical properties. The SPORTINGTEX team found bamboo Charcoal that can absorb Far Infrared Radiation and, at the same time to achieve Eco concepts.
Bamboo charcoal contains several metal elements after 800-degree heating. With the proper concentration of bamboo charcoal powder, fibers have the same benefits as ceramic fiber to emit Far Infrared Radiation.