In order to improve the safety of driving at night, the glass beads have been used in the road marking lines. When the lamp shines on the marking line, the ray of lamp can be reflected parallely by the glass beads so that the driver can see the road clearly thus increasing the safety. The life span of road marking line has been extended by mixing different size of glass beads. When the bigger glass beads have been worn down, the smaller ones still have refractive effect. The glass beads as refracting materials can be classified into two kinds class a (premix) and class b (drop on). We usually premixed the glass beads of class a into the paint for road marking to have well refraction performance, which will improve driving safety. The glass beads of class b are normally dropped on the painted road markings to improve refracting effect. Main composition: sio2¿cna2o¿ccao Refractive index: í² 1.5 (normal glass beads) í² 1.6-1.7 (mineral glass beads) Color: colorless transparent (or white) Shape: spherical particles, fluidity Size range: 75-2800ª8m (according to customer's requirements specifications) Roundness: í² 85% (according to customer's requirements specifications) Density: 2.4-2.6g/cm3 Coating: according to customersí» requirements 1.To use double pocket packaging, inner bag of polyethylene film, the thickness of not less than 0.5mm; outer plastic woven bag, to prevent leak or damp. Net weight 25 ía 0.2kg. 2.To use double pocket packaging, inner bag of polyethylene film, the thickness of not less than 0.5mm; outer plastic woven bag, to prevent leak or damp. Net weight 1000 ía 8kg.
