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Drop of water on 100% polyester textile. Waterproof/breathable fabrics resist liquid water passing through, but allow water vapour to pass through. Their ability to block out rain and snow while allowing vapour from sweat to evaporate leads to their use in rainwear, waterproof outdoor sports clothing, tents, and other applications.
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.
Unlike most "waterproof breathable" fabrics, Analogy can pass out liquid water as well as vapour. Unlike a conventional waterproof fabric, Analogy would fail a hydrostatic head test (if used to seal the bottom of a tube containing water, only a very short column could be supported). However, like fur, Analogy causes water to flow away from the ...
Durable water repellents are commonly used in conjunction with waterproof breathable fabrics such as Gore-Tex to prevent the outer layer of fabric from becoming saturated with water. This saturation, called 'wetting out,' can reduce the garment's breathability (moisture transport through the breathable membrane) and let water through.
A modern umbrella fabric has specific requirements for colour fastness to light, water and wet rubbing, and permeability. Serviceability in textiles or Performance is the ability of textile materials to withstand various conditions, environments, and hazards.
A piece of fabric is then secured over the cup and placed in a controlled environment. Then after period of time the cup is weighed to see how much water has been “pulled” into the cup through the fabric. The weight is then extrapolated to show the number of grams of sweat passing through a square meter fabric in 24 hours.
The Leather Standard (introduced 2017) is a system of testing methods, testing criteria and limit values for harmful substances used by the Oeko-Tex member institutes to globally certify the human-ecological safety of leather products: semi-finished leather materials ("Wet blue" – chrome-tanned hides, "Wet white" – vegetable tanned hides ...
Today, the 4-point system is the most commonly used fabric inspection system which as implied by the name, works with a 1 to 4 deduction system in which the highest defect rating is 4 points. [9] In the 4-point system, fabric quality is assessed based on unit points per 100 square yards.