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Thermoforming. Concept to Production. |
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QUV TEST METHOD The QUV test method is a cyclic ultraviolet weathering procedure introduced in 1969 by the Q-Panel Company. The particular test equipment uses a UV energy source that consists of eight 40-W fluorescent lamps with an emission range of 280 to 350 NM (Namometers), with continuous peak output at 310 NM. The enclosure accommodates 3’ x 6’ panels in two stationary racks that face two banks of four fluorescent lamps. The fluorescent lamps emit UV radiation that emulates the intensity of mid-day June sunlight in Florida. During the exposure tests, oxygenated water is applied to the test samples by condensation, rather than by spray. The water supply is heated in a vented tank below the test racks and lamps. To control the cyclic tests, the QUV is equipped with a variable interval timer that alternates the UV and the condensation at 43° C followed by 8 hours UV radiation at 60° C and high humidity. |
