A comparative analysis on properties of retroreflective materials for road traffic warning clothing
Abstract
In this study, the properties of retroreflective material samples are comparatively examined for the development of an ISO-compliant warning clothing with an enhanced visibility of motion and comfort for road traffic workers in Korea. The samples consisted of a plain and beads type material manufactured by 3M (US)(S1), a rectangular-patterned (S2) and plain sample (S3) that are both prism-type and manufactured by a Korean ‘R’ company, and another plain and beads type sample (S4) that was also made in Korea but without a specified manufacturer. ISO 150-J01 (1997) and ISO 20471 (2013) methods were used to measure the chromaticity/luminance and retroreflective properties respectively. The general retroreflective property and under 5 conditions: after abrasion (1), bending (2), bending at low temperature (3), temperature change (4), and washing 5 times (5) retroreflective properties were measured at 12′(~0.2°) observation angle and 5° incidence. 12′ and 20′ represent the angle of reflected headlight observed by the driver of a standard vehicle (sedan), whereas 1° 30’ represent the angle of reflection affecting the driver in a larger vehicle(truck). ε = 0° and 90° represent frontal and lateral reflection. As a result, chromaticity/luminance ranked in the order of R4 > R2 ≥ R1 > R3. The measured retroreflective factors (cd/lx・m2) of all four samples exhibited levels that surpass the ISO 20471 standard, suggesting all samples’ suitability for the development of ISO-compliant warning clothing.
How to Cite:
Park, S. & Choi, C., (2018) “A comparative analysis on properties of retroreflective materials for road traffic warning clothing”, International Textile and Apparel Association Annual Conference Proceedings 75(1).
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