Glass beads for road marking

In one aspect, the invention provides glass beads and optical devices comprising the glass beads.

The glass spheres may be obtained by sifting spheres of various diameters.

The invention relates to a material that is formed by heating a mixture of grains of expanded volcanic glass and water glass in an aqueous solution by means of microwaves.

The lightweight beads may be, for example, cenospheres, glass spheres, and ceramic spheres.

In other aspects, the invention provides methods of making said glass beads and rapid glass screening methods that use glass beads.

The reflective properties are created using high quality micro glass beads.

One such composition comprises, in particular, glass beads.

Possible materials which can be employed are glass beads and sand.

Glass beads may be disposed within the recesses.

Fused glass beads and the metal are connected to form a glass-to-metal seal.

The reinforcing spheres are selected from the group consisting of glass beads, boron nitride beads, silicone carbide beads and silicone nitride beads.

The present application relates to a method and apparatus for manufacturing an agglomeration of glass beads consisting of a plurality of glass beads bound together by means of a binder material.

The flames and glass beads may collectively produce the image.

Methods for forming the macro- and micro-liquid marbles, and use of the macro- and micro-liquid marbles, in controlled release applications are also disclosed.