FIELD: manufacturing technology.
SUBSTANCE: retroreflective prism sheeting comprises a plurality of discrete clusters of cube corners that are separated from one another on all sides by a textured surface. Each of cube corners in each cluster has a base edge that is not collinear or parallel with base edges of cube corners on either side of it. Array of cube corners clusters is rulable, and cube corners have different orientations. Four or more of cube corners in each cluster may have edges that converge into a central point within cluster, and cube corners of clusters may include at least two symmetrical pairs of cube corners.
EFFECT: technical result consists in providing insensitivity of retroreflective prismatic sheet material to turning, as well as high contrast when viewed at short distance.
29 cl, 23 dwg
