... and be widely used for road signs, traffic safety goods, and reflective printing ink, or screen printing, etc.I ... as much as 50%. d. For good retro reflective, the reflective layer should be between 30-50um. e. If ... mixed to produce up to 2 litres of reflective ink h. One litre of ink can cover ... 3 minute under 150°CSolution of getting strong retro reflective:a. Ink must be clear and transparent, Grey. ...