Grade Glass Bead Reflective Tape: Metallized carrier film on top begins. Apply glass beads to this layer so that approximately 50% of the beads are embedded in the metallization layer. This gives the beads reflective properties. Then apply a coat of acrylic or polyester on top. This layer can be clear to make a white reflective tape, or it can be tinted to create a different colored reflective tape. Then apply a layer of adhesive to the bottom of the tape and apply a release liner to that layer. It is rolled up, cut to width and sold. Note - the acrylic layer film will not stretch, the polyester layer film will. Because of the heat used in the manufacturing process, engineering-grade films end up being monolayers, so they don't delaminate.