Abstract: A retroreflective assembly is provided by a base having closely spaced retroreflective formations in its upper surface portion and a top member having closely spaced prism formations of the lower surface thereof and light directing formations on the upper surface thereof. Light rays impinging upon the assembly at an angle of less than 10 degrees are directed into the body of the top member by the light directing formations and pass into the prism formations which in turn direct light rays into the retroreflective formations of the base member. The retroreflective formations then retroreflective the light rays back into the prism formations and the light rays pass into the light directing formations on the upper surface and back towards the source. The composite structure is readily fabricated from synthetic plastic materials in its entirety or with glass bead retroreflective elements and can be sealed to provide a highly useful lane dividing strip for roadways and the like.

Abstract: Retroreflective sheeting is produced by bonding a multiplicity of cube corner formations to sheet material, and the cube corner formations are formed principally of a first resin formulation providing the body thereof and a second resin formulation providing the base thereof and the bonding to the sheet material. Cube corner formations are produced on a mold having a surface in which is formed an array of minute, contiguous cube corner recesses. The resin formulation initially deposited in the recesses is solidified substantially and the remaining depth of the recesses is filled with a bonding material which serves not only to level the cube corner formations, but also to bond them to the sheet material. The apparatus utilized is a continuously moving mold surface and has a plurality of stations for effecting the several steps of the process.