... be widely used for road signs, traffic safety goods, and reflective printing ink, or screen printing, etc ... grey or very light color is preferred, especial for uncoated glass bead. . Applying reflective bead ... Ideal mesh size for silkscreen printing screens is 60-80 mesh. Smaller screen mesh size are ... will be better.b. Firstly ,print aluminum powder as foundation. Then print with the mixture of ink ...