Testing Item: Light resistance test Instruction
Test Principle: Test the light resistance of the material
Attention Point:
- The size of the test panel is 70cm*30cmand use tin foil to wrap it
- Put the test pack in the centerof two PE boards and clamp it.
Attention Point:
- Light sourcesdebug to OSRAM 300W
- Put the test materials away from the middle line 8cm position,the distance between the lamp and the rotary table is 25cm, and must non-overlapping
- Testing temperatures and times: deep color materials 50℃ -28H/light color materials 50℃-12H
- Open all lamps at the same time, close the door of the machine,and start the test
Setting temperatures and times
![Light resistance test Instruction (3) Light resistance test Instruction (3)](https://www.sunlongbags.com/wp-content/uploads/elementor/thumbs/Light-resistance-test-Instruction-3-q4uunki3uur1coqzta5gzh9o0jr6bps2o33rqbkl3k.jpg)
Put the test materials away from the middle line 8cm position
![Light resistance test Instruction (4) Light resistance test Instruction (4)](https://www.sunlongbags.com/wp-content/uploads/elementor/thumbs/Light-resistance-test-Instruction-4-q4uunmds8itlzwo9iayq4gsl7bhwr3zjcceqovhsr4.jpg)
Distance between lamp and rotary table is 25cm
![Light resistance test Instruction (5) Light resistance test Instruction (5)](https://www.sunlongbags.com/wp-content/uploads/elementor/thumbs/Light-resistance-test-Instruction-5-q4uuno9gm6w6n4lj7brz9gbie38n6i700lppnff0eo.jpg)
Open all lamps at the same time
![Light resistance test Instruction (6) Light resistance test Instruction (6)](https://www.sunlongbags.com/wp-content/uploads/elementor/thumbs/Light-resistance-test-Instruction-6-q4uunq54zuyraciswcl8efufkuzdlwegov0olzc828.jpg)
Attention Point:
- The machine stops when the time is up
- Put on the cow leather glove and take out the testing panel
- Take out the stitching on the testing panel which is split into testing materials and a white panel. Hang with a clamp until getting cool.
Mark the usage time of the lamp on the recording of light usage.
![](https://www.sunlongbags.com/wp-content/uploads/2023/04/Light-resistance-test-Instruction-7.jpg)
Hang with clamp until getting cool
![](https://www.sunlongbags.com/wp-content/uploads/2023/04/Light-resistance-test-Instruction-8.jpg)
Mark the usage time of lamp on the recording of light usage
Attention Point:
Put cooling testing materials together with a fade color swatch Judge the degree
of fading under the multifunctional light color matching box.
If the fading level is up from LV.4(including LV.4), the result is OK.
(Should use a 45°degree angle to observe it.)
Remark:
- Must no include a Fluorescent component to avoid influencing the resulting judgment.
Keep the multifunctional light color matching box always clean for no pollution.
- Attention to the light usage recording.The lamp should be changed when the usage until 1000 hours.
![](https://www.sunlongbags.com/wp-content/uploads/2023/04/Light-resistance-test-Instruction-9-300x300.jpg)