How to test polyester fabric for resistance to fading under artificial light?

Testing polyester fabric for resistance to fading under artificial light is essential to ensure its longevity and colorfastness. Here’s a step-by-step guide to perform the test effectively:

1. Prepare the Sample: Cut a small swatch of the polyester fabric and ensure it is clean and free from any treatments.

2. Expose to Artificial Light: Place the fabric under a controlled artificial light source, such as a xenon arc lamp, which simulates sunlight.

3. Monitor Exposure Time: Leave the fabric exposed for a specific duration (e.g., 20-40 hours) to simulate prolonged use.

4. Compare Color Changes: After exposure, compare the fabric’s color to an unexposed sample using a colorimeter or visual inspection.

5. Evaluate Results: Assess the degree of fading and rate the fabric’s resistance based on standardized scales like AATCC or ISO.

By following these steps, you can determine the polyester fabric’s durability and suitability for applications requiring fade resistance.