Summer is a busy period for road maintenance in Denmark, especially for road markers. Before the road marking machinery can be rolled out, the roads have to be dry and the surface temperature above 5 degrees Celsius or the paint will not dry. And with temperatures rising up into the high twenties during the day, the viscosity of the paint changes from thick to thin, which makes applying a uniform layer of paint difficult. Road marking machine operator found that variations in paint viscosity or machine speed made road markings uneven.
New road marking machines have a computerised dosing system, can realise auto feed. This ensures an even paint dosage - regardless of temperature, speed, or road surface. And the air pressure system that operates the pumps doesn't involve any mechanical parts, so the equipment has a long working life.
The dosing system is much more exact than that on other machine. Variations in temperature are no longer a problem because the flow is adjusted according to the viscosity of the paint, which gets thinner as humidity and temperature rises. So it's incredibly easy to use.
And with an air pressure system, the pressure on the dosing system adjusts according to the machine's speed. This makes road marking job much simpler. If slow down when going past a driveway, the pressure eases off the dosing system so that the same amount of paint is applied. This also makes it easier to train new machine operators.
A computerised calibration programme also makes it easy to change road marking paint type or supplier. When activated, a calibration test applies the paint at different pressures. This information is measured on a curve and can be stored in the computer's memory. When the new paint is used, the computer knows exactly how much pressure to apply to give the perfect road marking. The computerised road marking machine efficiently control the paint dosage to cuts paint consumption.
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