Construction method of thermoplastic marking paint

First, the construction schedule

Under normal circumstances, the construction of the main line can complete 800-1000 m2 of marking line per day, the guiding line can be completed 400-600 m2 per day, and the guiding arrow can complete 60 per day.

Second, the construction method

The marking line construction personnel are divided into three groups, namely the road cleaning and discharging line group, the paint melting and stirring group and the marking line coating group. The construction temperature is generally between 100 ° C and 30 ° C. When the ambient temperature is lower than 100 ° C, it is resolutely not applied. The road surface must be dry and free of dust during construction.

1. Road cleaning and discharging line group: Firstly, use the hand-push road cleaning machine to remove the road area soil, floating dust and obstacles, dust, asphalt, oil or other harmful substances, and mark the wire as required. There are many ways to mark the wire, one is to use the rope ash line (that is, the elastic package). This method has a fast and simple schedule, but it has high technical requirements for the marking line personnel, and it is easy to produce deviations due to the experience of the straight line of the wire, and the gray line is easy to fall off; another kind of steel nail pulls the lead to ensure a better wire. Qu, straight, but the progress is slightly slower. For the various arrows and characters, the above two methods are generally used, and for the lane edge line and the boundary line, the marking line can be used for the lofting and arranging. During construction, we will use it flexibly according to the experience. In the second step, a primer is applied to one side of the wire with a primer. The spraying method is better, the primer width is uniform, the paint film is uniform, and the adhesion is also good. When using the brush by hand, it is necessary to master the amount of paint used moderately, evenly, not leaking or lace. Dry after coating for 5 to 10 minutes, press it with your fingers and lift it into a wire shape. At this time, it can be regarded as the road surface finish.

2. Coating melting and mixing group: The coating (auxiliary) is put into the hot-melting kettle, and the temperature in the kettle is controlled between 180 °C and 210 °C. While melting and stirring, the temperature is strictly controlled. After melting and dispersing, in order to ensure better quality of the marking, the inspection test is carried out. The test method is to take a little sample of the paint in the kettle and apply it into a sheet shape (about 1.6 mm thick) to make it cool naturally. After drying, bend it with a finger. When it is bent to about 35 degrees, the smear breaks best.

3. Marking line coating group: When the hot melted melted paint is placed in the lined storage tank, it must be filtered with an iron screen. Ignite the fire under the bucket and on the side of the scribe to maintain the proper construction temperature. Then pour the glass beads into the box and the construction can begin. When scribing, the scribing car is coated with a wire, and the suitable temperature of the coating at the time of coating is approximately 180 °C.