The Structural Composition of Thermoplastic Road Marking Paint

Hot melt road marking paint is mainly composed of synthetic resin, glass beads, colored pigments, timber fillers, and other additives.

The hot-melt coating is with fast drying character for the thermoplastic characteristics of synthetic resin. The melt adhesion of a synthetic resin makes hot-melt paint a strong adhesive with the road surface. Additives in the coating paint increases the coating plasticity, improving the anti-settling, anti-pollution, anti-tarnish. Marking paint colors mainly are yellow and white. The white marking paint mainly contains titanium white, zinc oxide, lithopone, while the yellow paint is mainly heat-yellowing lead. And the filling materials of road paint can affect the mechanical strength, abrasion resistance and hue of the coating film. Particle size of the paint powder will have influence of the flow, sedimentation and also affected the surface processing. Coating glass beads were added in order to improve the identification at night, and improve brightness and durability of the marking.

Glass bead is a colorless, transparent pellet, with refraction of light, and light focus, and directional reflection function. The glass beads were mixed with or spreading on the surface of the coatings, can reflect the light back to the car driver's eyes, thus greatly improving the visibility of the markings.