The steps of Thermoplastic Paint Preheater construction

1) Safety measures. Fully utilize safety facilities such as signs, warning flashlights, traffic cones, and command flags, equip traffic managers, manage pedestrians and traffic well, and prevent accidents from occurring. All safety facilities should be able to clearly identify drivers and pedestrians, facilitate vehicle passage as much as possible, ensure the safety of operators, and adapt to new changes at any time according to the progress of marking construction. All construction personnel must wear work clothes with clear signs and eye-catching colors. Night construction must have reflective clothing and reflective signs to ensure the safety of construction personnel and the project. At the same time, on-site operators must wear protective helmets and gloves according to regulations to eliminate unsafe factors in their early stages.

(2) Hot melt coating is heated and melted. When starting to dissolve the coating, heat it over low heat and add a small amount of coating; When it starts to melt, start the mixer to stir, while continuously adding new materials to the kettle, increasing the heat and strengthening the stirring until all the paint in the kettle is melted.

The heating temperature of the coating should not be too high, as the material tends to deteriorate when heated to around 200 ℃. The main causes of material degradation are thermal decomposition, oxidation, and evaporation. When heating yellow paint, it may change color due to the poor temperature resistance of the yellow pigment. Therefore, molten paint should avoid prolonged high temperature heating and it is best to use appropriate temperature and short-term heating methods. When the road surface temperature is above 25 ℃, the coating temperature can be controlled at around 180 ℃; If the road surface temperature is below 25 ℃, the coating temperature should be controlled at 190-200 ℃ before being placed in the construction equipment for marking construction.

(3) Cleaning of the road surface. The important condition for a strong bond between paint and road surface is to keep the contact surface clean. Dust, mud, sand, and moisture on the road surface are the main factors affecting the adhesion of coatings; Dust on the road surface can be removed with a broom or hair dryer, while also paying attention to the presence of moisture or moisture on the road surface. If necessary, use a gas flame to heat and dry before construction.

(4) Layout. Firstly, traffic management should be done well to ensure the safety of the layout operation, and then the measurement of the marking position should be carried out. The measuring tools and white powder should be used to mark the road surface according to the position and shape indicated in the design drawing; When setting out the marking, the center point of the road should be measured first, and then the center line should be determined at intervals of 10-20m; Set the center point every 5-15m along the curvature radius on curved road sections; When it is confirmed that the set center point connection line matches the curvature, connect each center point and draw a road centerline sample line; Check forward in order, while continuously extending the centerline forward, it is also necessary to constantly check with the set centerline position; According to the centerline position of the road, mark half of the width of the marking and draw the outline of the marking width; The marking position of the curved road section is measured along the radius direction. When the curvature radius is small on curved road sections, it is necessary to confirm the design and construction of the road alignment, and obtain coordination and consistency with the road alignment; The lane boundary and edge lines can be measured from the centerline, and in general, the width of the markings should also be marked. The layout of pedestrian crossings, text, etc. shall be based on the principles of construction drawing design.

Related Information：

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