In all color fastness tests, testing the fabric's response to light may be one of the most important test items. Of
course, the performance of the fabric in the washing, dry cleaning,
rubbing, sweating and post-exposure of the fabric in different types of
solutions is of vital importance to the manufacturer. But
because the fabric is sensitive to light sensitivity, and difficult to
predict, so accurate and reliable test is quite critical. For many manufacturers, the light fastness test is an important part of R & D and quality control.
However, it is also one of the most difficult to master the test. Because most of the material in the sunlight takes months or even years to react, so the fabric in the practical application of the environment in the natural light test is not feasible. Not to mention how many R & D departments are willing to wait patiently? Many manufacturers choose to test the lab. They simulate natural light to speed up the testing process. The most successful technique is xenon long arc radiation. This only reliable method of reconstructing natural light spectra uses a variety of different filters to reproduce special optical conditions.
Light fastness test is not just the fabric under a specific light source to observe its performance so simple. The temperature and humidity must also be taken into account, due to the fact that the temperature and humidity make the fabric more responsive to light. Thus, the light fastness tester must be able to control these environmental factors, that is, for each test to create the appropriate environmental conditions, and in the whole process to maintain a constant. In addition, if a fabric in the outdoor application, then the weather factor, especially the rain is another issue must be considered. Therefore, the equipment must contain simulated rain water sprinkler systems, as well as simulate the rest of the world's climate conditions.
However, it is also one of the most difficult to master the test. Because most of the material in the sunlight takes months or even years to react, so the fabric in the practical application of the environment in the natural light test is not feasible. Not to mention how many R & D departments are willing to wait patiently? Many manufacturers choose to test the lab. They simulate natural light to speed up the testing process. The most successful technique is xenon long arc radiation. This only reliable method of reconstructing natural light spectra uses a variety of different filters to reproduce special optical conditions.
Light fastness test is not just the fabric under a specific light source to observe its performance so simple. The temperature and humidity must also be taken into account, due to the fact that the temperature and humidity make the fabric more responsive to light. Thus, the light fastness tester must be able to control these environmental factors, that is, for each test to create the appropriate environmental conditions, and in the whole process to maintain a constant. In addition, if a fabric in the outdoor application, then the weather factor, especially the rain is another issue must be considered. Therefore, the equipment must contain simulated rain water sprinkler systems, as well as simulate the rest of the world's climate conditions.
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