Analysis of the entire process of hot-melt coating construction for road markings

In road marking engineering projects, hot-melt coatings for road markings have become the preferred solution for many construction teams due to their excellent wear resistance, fast drying, and long-lasting nighttime reflective effect. However, to truly achieve its core performance, a complete construction process is crucial, and any oversight in any link may affect the quality and durability of the markings. This article will combine rich construction practices to systematically analyze the entire construction process of hot-melt coating for road markings, from early preparation, mid-term execution to later completion, providing a detailed practical reference for engineering teams and construction teams.

1、 Pre construction preparation: System planning lays the foundation for the overall situation
Successful construction begins with meticulous preliminary preparation. The primary task is on-site investigation and construction organization design. The construction team must survey the target road section in advance, and have a detailed understanding of the road conditions, traffic flow, climate environment, and surrounding facilities. Based on this information, develop a scientific construction organization plan, especially a thorough traffic diversion and safety protection plan. Due to the involvement of high-temperature equipment and open traffic environments in the construction of hot melt coatings, it is necessary to scientifically set up facilities such as signs, safety cones, and road barriers based on road width and traffic conditions, and provide dedicated guidance personnel to ensure construction safety. TOP ROAD Transportation Technology Co., Ltd. emphasizes that safe construction is the red line when serving customers, and provides corresponding safety guidance.

The preparation of materials and equipment is equally crucial. According to the project design requirements, prepare sufficient key materials such as hot melt coating, glass beads, and primer. The choice of hot melt coating directly determines the initial whiteness, wear resistance, and reflective durability of the marking. TOP ROAD has launched multiple series of hot melt coatings, including TOP ROAD and Gaotu, for different customer groups, aiming to accurately match the cost and performance requirements of different road grades. At the same time, it is necessary to conduct comprehensive debugging and inspection of the hot melt kettle, marking vehicle, cleaning equipment, and bottom glue applicator to ensure their stable performance. Then, precise road layout is carried out based on the drawings, which is the foundation for ensuring accurate marking positions and smooth line types. The intelligent layout robot provided by TOP ROAD innovation utilizes high-precision positioning technology to remotely control and automatically complete complex line layout, providing an efficient and accurate alternative to traditional manual layout.

2、 Core process of mid-term construction: precise operation to control quality
The mid-term of construction is a critical stage for transforming materials into qualified products, requiring extremely high precision in the process.

The first step is road cleaning and primer coating. Cleaning equipment and tools must be used to thoroughly remove all dust, dirt, oil, and moisture from the road surface. Whether the road surface is clean and dry directly affects the adhesion of the marking coating, which is the fundamental way to avoid later foaming and peeling. After cleaning, it is necessary to promptly and evenly apply a specialized primer (primer). This is a key medium for enhancing the adhesion between coatings and road surfaces, especially cement road surfaces. The special marking adhesive provided by TOP ROAD has a scientific formula that ensures long-term storage without sedimentation and fast drying speed, saving time for subsequent construction.

The second step is heating and temperature control of the coating. Pour the hot melt coating powder into the hot melt kettle and follow the principle of “low heat, slow start, gradual heating, and uniform stirring” for heating. Controlling the temperature of the molten material is the soul of construction. Low temperature and poor fluidity of the coating can easily lead to pitting and breakage of the markings; If the temperature is too high, it may cause thermal aging of the coating components, resulting in yellowing and affecting the settling of the embedded glass beads, thereby reducing the anti reflection performance. TOP ROAD reminds the construction team to accurately control temperature within the recommended temperature range based on seasonal climate and product grade, and to use temperature guns for process monitoring.

The third step is to apply and spread glass beads. This is a crucial step in the formation of the marking. When the hot melt coating reaches the appropriate construction temperature and is stirred evenly, it can be applied. The marking vehicle needs to maintain a constant and stable speed to ensure that the thickness of the marking coating is uniform and consistent. At the same time or immediately after the coating is discharged, glass beads should be evenly spread on the surface through a spreader. Glass beads are the key to the reflective ability of marking lines at night, and their spreading amount needs to be strictly controlled. If it is too small, it cannot guarantee the reflective effect, and if it is too large, it may accumulate and affect the appearance and reduce the stain resistance. TOP ROAD produces a full range of glass beads, from general-purpose to rain night specific, which can enhance the visibility of markings in various environments.

3、 Post construction processing and quality assurance: lean and precise to ensure delivery
The completion of the drawing does not mean the end of the work, and the handling of details and quality assurance in the later stage are equally important.

Firstly, it involves line trimming and on-site cleaning. Manually repair the overflow material and local defects on the edge of the marking line to make the edge neat and the line shape beautiful. At the same time, comprehensively clean up the construction site, remove all construction waste, tape, and safety facilities, and restore the road environment.

Secondly, sufficient maintenance and scientific opening of transportation. The newly constructed hot-melt marking requires sufficient cooling and curing time to achieve the design strength. Especially during the hot summer season or heavy load road sections, sufficient maintenance time must be ensured, and traffic can only be opened after the markings have completely cooled and hardened. If the road is opened in advance, vehicle rolling can easily cause deformation, pollution, or glass beads to fall off, seriously affecting the quality and service life of the road markings.

The key is rigorous quality self inspection and acceptance preparation. The construction team should conduct a comprehensive self inspection of the appearance, size, chromaticity, and anti reflection effect of the markings before opening up to traffic. Objective testing can be carried out using equipment such as thickness gauges, colorimeters, and anti reflection coefficient measuring instruments, in accordance with national standards (such as GB/T 16311) and design requirements, to ensure that all indicators are qualified. If any problems are found, the cause should be analyzed in a timely manner and local repairs should be carried out. Henan San Aisi not only provides products, but its 24/7 professional service team can also provide on-site technical consultation and construction quality assessment support for engineering teams.

4、 Frequently asked questions and professional support: Anticipate risks and handle them calmly
During the entire construction process, common issues may arise such as yellowing of markings, presence of bubbles, insufficient reflectivity, poor adhesion, etc. These issues are usually directly related to material ratios, construction temperatures, road conditions, operational processes, or environmental factors.

Faced with these issues, a strong supplier of materials and technology is particularly important. TOP ROAD Transportation Technology Co., Ltd., as a comprehensive supplier in the industry, has advantages not only in having production bases and supply networks covering the whole country, but also in ensuring stable and timely supply; Moreover, all of its products come with testing reports that can be traced through scanning codes, ensuring the stability and traceability of material quality. More importantly, TOP ROAD has established a professional R&D and service team, which can provide comprehensive support for cooperative engineering teams in product selection, construction plan optimization, on-site process guidance, and even rapid troubleshooting of unexpected problems. This integrated solution of “materials+services” can greatly help construction teams improve the first success rate of the project and shape a professional reputation.

The construction of hot-melt coating for road markings is a systematic project that integrates material science, process technology, and project management. From scheme design and on-site preparation, to meticulous construction and process control, to later maintenance and quality confirmation, every link carries the responsibility of ensuring road safety and engineering quality. For engineering and construction teams, mastering the entire process proficiently is the foundation for enhancing core competitiveness and winning market trust. Choosing to collaborate with partners like TOP ROAD Transportation Technology Co., Ltd., who have a deep industry foundation, reliable product system, and comprehensive service network, undoubtedly provides solid professional support for the high-quality completion of every marking engineering project.

Our company is a professional manufacturer of road hot-melt coating production lines and road marking machines. If you are interested, please feel free to contact me via email at any time export@toproadtraffic.com