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Bending Test for Reflective Sheeting

Take the 230 mm * 70 mm reflective sheeting as the sample of the bending test under the temperature 23°C ± 2°C, and remove the release paper, and then spread enough talcum powder on the surface of the backing binder. Wind the sample in the round bar with the diameter 3.2mm along the length direction within 5s, contact the binder of the sample with the outer surface of the round bar, and release the sample, and then check the change of the sample surface by the 4X magnifier according to the requirement.