Would you please elaborate your query on color fastness to light so that I can provide you the correct information. This means with 40 hours of direct UV light; the fabric showed no fading. Test method SATRA TM160:1992 – 'Colour fastness to light from a xenon arc' is our routine test for light fastness. Washfastness is judged on a scale of 1 to 5, where 5 is most resistant to washing out. As you can see in the photos below, Revolution is the perfect choice for your sunroom, shady porch spot or in front of your favorite window. and do you know how much sunlight your fabric can withstand before it starts to fade? 50,000 hours would imply 5.7 years if the light is operated for 24 hours in a day, 7.6 years if the lights are on 18 hours per day and 11.4 years for 12 hours … on May 04, 2018. The warm temperatures and sunshine make us all want to spend more time outdoors, but what affect does the sun have on your indoor furniture? A continuation of figure 1 in the main text. After final coat, allow Kamar® to dry completely before proceeding to step 2. Revolution Fabrics will be closed from 11/26-11/30 for Thanksgiving. Fastness is the resistance of a textile material to specific chemical agencies. Since 2012, federal laws have gradually required the common types of light bulbs to be 25% more energy efficient. In 2014, incandescent 40- and 60-watt bulbs began to be regulated in the same way. One Watt over four hours would be four Watt Hours of power. Light will break down those chemical bonds and cause fading, distorting, or bleaching the fabric. When shopping for a fabric, you may see a lightfastness rating or a number of light hours listed in the fabric's specifications. The blue … watt-hour (Wh): The watt-hour (symbolized Wh) is a unit of energy equivalent to one watt (1 W) of power expended for one hour (1 h) of time . ... BWS 3 was reached after 40 hours, BWS 4 after 80 hours, BWS 6 after 320 hours, and BWS 7 after 750 hours of full sunlight exposure. These federal regulations first applied to 100-watt incandescents (in 2012) and 75-watt bulbs (in 2013). The watt-hour is not a standard unit in any formal system, but it is commonly used in electrical applications. Dyes and pigments are used for example for dyeing of fabrics, plastics or other materials and manufacturing paints or printing inks.. Lightfastness is judged on a scale of 1 to 8, where 8 is most fade-resistant. Lightfast Paint and Lightfastness Ratings Posted on February 13, 2015 by Artists Network Staff This Ask the Experts Q&A by Bradley Lance Moore first appeared in the May 2013 issue of The Artist’s Magazine . Revolution fabrics have a lightfastness of 500 hours! The minimum lightfastness requirement for a residential fabric is 40 hours. The industry standard for indoor upholstery fabric is 40 hours of lightfastness. Generally 10 AFU, 20 AFU, 40 AFU and 60 AFU are the requirements for different retailers depending on product type. A Watt Hour is a unit of measurement for power over a period of time (an hour), or in our case, a way of measuring capacity. Above: Revolution Plus pattern Slipcover Twill (in color bottle), Above: Zoe catching some zzz's on Revolution pattern, Hailey, Above: Reese Gibbons sporting Revolution Plus pattern, Whiskey River, ← Older Post Lightfastness is a property of a colourant such as dye or pigment that describes how resistant to fading it is when exposed to light. Start with thoroughly dried alcohol ink art. In this sense, photo doesn’t mean photography, but rather photo means light from the Greek word, phōt (meaning light). Revolution fabrics have a lightfastness of 500 hours! What does a life of 50,000 hours mean in the case of - LEDs? . The humidity is usually kept at 40±5 RH and 30°c temperature. Light will gradually weaken or destroy the chemical bonds called chromophores that make up the color of every piece of fabric. Therefore, photo-degradation means the the degradation of materials through exposure to light. As you can see in the photos below, Revolution is the perfect choice for your sunroom, shady porch spot or in front of your favorite window. The fastness of a colour can vary with the type of dye, the particular shade used, the depth of shade and … After the process assessment to color fastness is done. The minimum lightfastness requirement for a residential fabric is 40 hours. Poor colour fastness in textile products is a major source of customer complaint. Allow at least 24 hours or more for best results. One Watt hour is equal to one Watt of average power flow over an hour. These chromophores determine the amount of light a fabric absorbs and the vibrancy of the color. The minimum lightfastness requirement for a residential fabric is 40 hours.