FIELD: metallurgy.
SUBSTANCE: retroreflective sheet material, which can be a beaded retroreflective sheet or prismatic retroreflective sheet, has a base, having a first surface and a second surface, with a plurality of retroreflective elements, located on second surface of base to form retroreflective sheet material, corresponding to initial level of retroreflectivity. Material also comprises a printed image, arranged on opposite surface to change level of retroreflectivity. Image occupies an area making up 30 % to approximately 100 % of area of second surface. Material of printed image also enables to select length of transmitted wave.
EFFECT: proposed solution consists in improvement of inspecting and improvement of retroreflectivity of both beaded and prismatic sheet materials without need to combine different types of reflecting materials.
18 cl, 6 dwg
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