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A relatively new rating designation for sun protective textiles and clothing is UPF (ultraviolet protection factor), which represents the ratio of sunburn-causing UV measured without and with the protection of the fabric. For example, a fabric rated UPF 30 means that, if 30 units of UV fall on the fabric, only 1 unit will pass through to the skin.
Horizontal low-pressure tanning bed. Indoor tanning involves using a device that emits ultraviolet radiation to produce a cosmetic tan. [a] Typically found in tanning salons, gyms, spas, hotels, and sporting facilities, and less often in private residences, the most common device is a horizontal tanning bed, also known as a sunbed or solarium.
Launched in the 1940s by the Shirley Institute, the Shirley Togmeter is the standard apparatus for rating thermal resistance of textiles, commonly known as the Tog Test. This apparatus, described in BS 4745:2005 [ 8 ] measures a sample of textile, either between two metal plates (for underclothing) or between a metal plate and free air (for ...
Typical maximum with current technologies are in 15,000 range. High-performance fabrics may get A1 test scores in 10,000 to 15,000 g m −2 d −1 range and usually shows that a fabric has a fairly quick release of moisture, but may not be the best over longer periods of use.
Fabric head ratings do not totally specify water resistance of a garment, as it does not test closures such as zips. In addition, the breathability of nearly all waterproof/breathable fabrics is very dependent upon weather conditions, especially temperature, humidity, and wind.
The grade of numbered duck refers to the number of ounces subtracted from 19 for a 36-by-22-inch piece of fabric. For example, a piece of No. 8 numbered duck with dimensions of 36 by 22 inches weighs 11 ounces (310 g) (19 − 8 = 11). [5] Number duck classifications per linear yard, 22 inches wide