LIGHT REFLECTIVE MATERIALS

摘要

A method of producing a light reflective material in which a mixture of particles and a carrier material is applied to a substrate. Each particle comprises a body of transparent or translucent material and a coating on part of the surface of the body. The coating is light reflective and comprises a material having magnetic or electrical properties. An adhesive is contained in the carrier material or in the coating. A magnetic or electrical field is applied to the mixture and causes the particles to move towards a predetermined orientation relative to the substrate. This orientation is normally one in which an uncoated part of each particle faces outwardly away from the substrate, but in the case of a transparent or translucent substrate the uncoated part may face inwardly towards the substrate. When the particles are correctly oriented, the adhesive is activated to secure them to the substrate.