Horizontal road surface marking
View Patent ↗Road markings made of special materials with reflective additives (micro-glass beads) that increase the retroreflection factor of the road marking independent of the color (whiteness, brightness) of the road marking material (thermoplastic, cold plastic, paint). Light sources, such as car headlights, emit radiation, including in the form of visible light. A major portion of the light beams directly incident onto a pavement ( 6 ) is absorbed. According to the first embodiment, a portion of all incident light beams is partially reflected directly from a road marking layer ( 4 ) and returned in the opposite direction. In both embodiments, a portion of the light beams is incident upon an extending portion ( 1 ). Since no additional layer ( 8 ) is present on the surface of the extending portion ( 1 ), the light beam is partially reflected and, upon refraction, passes inside a micro-glass bead ( 2 ). Having passed through the micro-glass bead ( 2 ), the light beams are almost completely reflected from the interface between the glass and additional layer ( 8 ), which is present along the entire surface of the micro-glass bead ( 2 ), except for the extending portion ( 1 ). Most of these reflected light beams is returned to the light source.
1. Horizontal road markings comprising
a road marking layer with a first surface and a second surface, where the first surface faces transport moving along the road surface, and the second surface is placed on the road surface; and
micro-glass beads located on said road marking layer partially embedded in said road marking layer such that there is an extending portion of the micro-glass beads located above the first surface,
wherein said micro-glass beads within the road marking layer are provided with an additional layer of removable, water soluble paint completely covering their entire surface, said additional layer being dissolvable when exposed to precipitation, UV radiation, or chemical reagents, such that said extending portion becomes a clean glass surface when said road markings are in use.
2. The road markings according to claim 1 , wherein the additional layer is a water-based paint.
3. The road markings according to claim 1 , wherein the additional layer is a metal-based paint.
4. Horizontal road markings comprising micro-glass beads located on a surface of pavement facing transport moving along the road surface, where said road surface at least contains bitumen, and micro-glass beads are partially embedded into the bitumen so that there is an extending portion of the micro-glass beads located above said road surface,
wherein the extending portion of the micro-glass beads are provided with an additional layer of removable, water soluble paint completely covering their entire surface, said additional layer being dissolvable when exposed to precipitation, UV radiation, car tire friction, or chemical reagents such that said extending portion becomes a clean glass surface when said road markings are in use.