- National Service Hotline:
- Mobile: 18633203837
- Address: Beizhu Industrial Zone, Xiaodian Town, Boye County, Baoding City, Hebei Province
Hebei Weihua Transportation Facilities Co., Ltd. is located in the beautiful scenery of Baoding with a modern production base. The base covers an area of more than 100,000 square meters, and the construction area inside the base is nearly 70,000 square meters. It has a large-scale steel structure workshop and modern office, scientific research, and living facilities; it has a fully automatic hot melt marking line coating production line and a normal temperature marking line coating production line.
The company has attracted a number of high-level technical R & D talents and accumulated a complete set of technical advantages for road marking paint series products. Based on the product series, the company has formed a team with high comprehensive quality, strong R & D capabilities and excellent production efficiency. Advanced testing equipment and perfect quality assurance system. The annual production capacity of hot-melt road marking paint is 50,000 tons, and the production capacity of normal temperature marking paint is 10,000 tons. Transportation industry standards. The research and production capacity of various marking paint products ranks among the best in the domestic industry.
Facing the development trend of globalization, as always, adhering to the product development strategy of "high-end cut-in, system leap, and comprehensive advancement" and the market development strategy of "high-end technology, market globalization, and capital socialization", and strive to build an international road Special product industry group, moving towards the advanced goal of the international industry.
The core of corporate culture: integrity, innovation, and forge ahead. This is a cultural system that has emerged from the company's development and has gradually formed its characteristics. Weihua Culture takes "integrity" as its core, treats the market with integrity, treats users with integrity, fulfills its duties with integrity, and gets along with people with integrity. With "innovation" as its soul, strategic innovation, concept innovation, mechanism innovation, technology innovation, market innovation, management Innovation; reflected in the "endeavor", to respond efficiently to the market and user needs, to stimulate upward achievements brilliant!
Along with being from nothing, from small to big, from big to strong, from China to the world, Weihua culture itself is constantly innovating and developing. The general recognition of employees and active participation are the characteristics of the company culture. As always, adhering to the product development strategy of “high-end penetration, system leapfrogging, and comprehensive advancement” and the market development strategy of “high-end technology, market globalization”, we actively meet the challenges of globalization and wholeheartedly create new value and success for users. We will create a hundred-year brilliant!
The company adheres to the development concept of "integrity, innovation and forge ahead".
To win trust with integrity; to promote development with innovation; to forge ahead with brilliant achievements.
Forward thinking creates an ever-expanding world, with a confined temperament to create a continually perfect connotation.
Products such as character, quality as conscience; to provide users with high technical content, wide range of applications, excellent durability and performance.
Before the sale is for the sake of the user, the user is responsible during the sale, and the user is satisfied after the sale; protecting the interests of customers is our goal.
Creating a century-old enterprise must be people-oriented. As a fast-growing enterprise, employees are the elements and the driving force behind the sustained and rapid development. The company not only provides employees with a competitive salary and welfare system, but also provides a set of practical training programs and career development plans for employees. Respect each employee and give each employee room for professional development, opportunities for personal growth, and reflection of his own value. Provide a good platform for personal talents who are interested in the development of world-renowned companies in the industry.
With strong innovation ability and teamwork, create products with market differentiation;
Guided by its own intellectual property rights, enhance the company's core competitiveness and lead the trend of new products;
Taking the special area of road marking as the direction and the customer's needs as the goal, tailor-made special products.
We forge ahead, challenge ourselves, and brainstorm. This is the source of the company's development. From the top to the bottom, every employee is full of infinite love for the transportation industry. We believe that there is a lot to do here. This can be a lifetime. The cause of struggle! Confidence is the driving force and source of victory. A good atmosphere of concerted efforts will lead us to glory!
1. How to improve the retroreflective coefficient of hot melt marking line <br /> After summing up and thinking about the after-sales service in recent years, there are four major factors affecting the retroreflective coefficient of hot melt marking line:
Factor one: Brightness factor. The brightness factor of hot-melt coating directly affects the retroreflective coefficient of the marking line. Too little addition of resin with a dark color and titanium dioxide will affect the brightness factor. In addition, a whitening agent: for example, blue series Although pigments increase the whiteness of perception, they affect the brightness factor.
Factor two: The selection of microbeads is very important. The roundness of the microbeads directly affects the retroreflection coefficient (as far as possible, the microbeads with a roundness of more than 80%). The size of the microbeads will affect the retroreflection coefficient.
Factor three: Construction temperature control is critical. The temperature of the construction material will affect the retroreflection coefficient. Control the temperature of the material and ensure that 50%-60% of the microbeads are embedded in the marking coating. The effect is good at this time.
Factor four: To spread the microbeads evenly or too much will affect the retroreflective coefficient of the marking line. The appropriate amount should be about 0.35kg / ㎡.
It is recommended that in order to ensure that the detection of the retroreflective coefficient is qualified, please choose a coating with a high brightness factor and large particle beads with a high rounding rate. At the same time, pay attention to the uniformity of the bead distribution and control the construction temperature!
2. Solutions for hot melt marking bubbles <br Everyone knows how to analyze hot melt marking bubbles, in the planning of hot melt markings, bubbles often appear, large such as soybeans, small such as Sesame, although such defects do not affect the service life, but a closer look affects the aesthetics, which has always been a problem that has troubled our linemen!
After many years of practice, industry exchanges, and expert consultation, I summarized and found that the bubbles in the marking line mainly come from six aspects, a method to check where the bubbles come from, and a shortcut to reduce the bubbles. The specific analysis is as follows:
I. Six aspects of bubble generation1. The air in the gap between the road surface is heated. When the material temperature is about 200 degrees, it is coated (covered) on the road surface to form a marking. At the same time, the drying of the marking line takes 3-8 minutes. Within these minutes The air in the pavement cracks expands due to heat and rises upward.
Performance 1: The bubbles are large and the bubble bursts the coating film. This is what we want, and there will be no bubbles when the bubble is ejected;
Performance two: Some small bubbles have not been ejected, and the marking line is dry, so it stays in the marking line coating or at the bottom of the marking line. This will not affect the aesthetics and will not be investigated.
Performance 3: The bubbles have just come out of the film surface, have not yet burst, the coating film has been dried, leaving pits. Although it does not affect the service life, once the owner has in-depth research, it is a headache!
Solution: Increase the temperature of the material by 5-10 degrees, improve the leveling of the coating, reduce the viscosity of the coating, and let the bubbles escape; or reduce the temperature of the material by 5-10 degrees, increase the viscosity of the coating, and not allow the top of the bubbles Get up and stay inside the line!
2. Moisture on the ground will produce bubbles. Water in a wet pavement will be heated to evaporate to produce bubbles. Construction can only be performed after the pavement is dry. In the morning and night in winter, special attention should be paid to the humidity of the pavement.
3, the base oil will not produce bubbles before the base oil is not dried, the solvent in the base oil is not completely volatilized, volatilization when heated will produce air bubbles. Do not plan until the primer is completely dry. Otherwise, in addition to easily causing air bubbles, it is also very likely to cause undried primer detonation and cause safety accidents!
4. Modified asphalt is prone to generate bubbles when heated. Modified asphalt is often used in high-grade highways such as highways. Modifiers often generate bubbles when they are heated. In the case of in-depth research and excessive pursuit of perfection by owners, they can be used when burning. Add about one thousandth of soybean oil (or salad oil) to sacrifice the compressive strength of the marking line and improve the leveling of the material, so as to reduce the bubble and meet the owner's requirements.
5. Alkaline heavy cement pavement is prone to blistering. Alkaline overweight cement pavement is prone to blistering. I can only overcome it by cleaning the floating ash and re-priming the oil! It's just reducing, not eliminating!
6. Loose air bubbles on the concrete pavement especially touch this kind of pavement, which symbolizes the "winning". It can only be balanced by re-priming and adjusting the material temperature twice!
Second, the method of checking where the bubbles come from is to check whether the bubbles are mostly a material problem or a road surface problem: you can use the same material to test a knife on the aluminum plate or iron plate. If no bubbles are generated, it is not a material problem! You can also push the cart to other sections to draw a short section for experimental comparison!
Third, the shortcut to reduce air bubbles is generated when the road is dry and the base oil is completely dry. The shortcut to reduce air bubbles is to adjust the temperature of the material, or add about one thousandth of soybean oil to adjust the leveling of the material.
3. Reasons and treatment methods for the hot melt marking line to fall off:
With the same hot-melt marking paint, the quality of the marking may be very different when different construction teams work on the same pavement. Some markings can be guaranteed for 12 months, and some can be guaranteed for 6 months. Some will fall off within a few days. Of course, the quality of coatings is important, and the construction process is particularly important in the construction of marking lines.
Let ’s take a look at the reasons that cause the hot melt marking to fall off: there is moisture on the pavement, the temperature difference is large, the undercoating agent is not dry, the undercoating agent is not applied, the road surface is not clean, and the old line is not firmly combined.
Reason: The road surface is treated with water: After the road surface is completely dry, it is necessary to blow dry or toast the construction road before construction. Open the large hopper before the fire. Cause: The temperature difference is too high, the road temperature will cause the marking to fall off. Preheat the construction pavement when necessary due to fire: The undercoating agent is not dry. The undercoating agent (primer) is unevenly coated, the coating is too thick, and the interval is short. If the undercoating agent is not dry, it will cause the marking to fall off. After coating, evenly dry, draw the line. Reason: No paint is applied. Treatment: Evenly apply the paint. Reason: The road is not clean. The road is dusty, sandy, oily, etc. Treatment: Cleaning and blowing off the soil and oily soil on the road. After grinding and blowing, the reason for construction is: the combination with the old line is not strong, the undercoating agent is not applied, the undercoating agent is not uniform, the undercoating agent is not dry, and the old line is aging. After the undercoat agent is dry, draw a line 4. Product technology control <br /> Technical plan:
1. Complete set of imported equipment and equipment for production process are stirred evenly and finely. 2. Production management and control strictly implement the 9000 certification quality management system. 3. Materials and raw materials. The main raw materials are imported materials and enterprise raw materials and undergo strict quality inspection. 4. Advanced formulation technology has passed 20 Years of exploration, to find out a set of advanced production formulas and technical process product quality:
1. Due to changing the material quality and technical process, adding special anti-ultraviolet material and anti-oxidation material, the performance advantage is that the whiteness performance of the coating is better than similar products, which improves the night reflectance and is conducive to the improvement of traffic safety. 2. The silicified rubber composition makes the coating harder, increases the wear resistance of the coating, and has a higher coefficient of wear than ordinary hot-melt coatings.
3. By adding anti-aging additives, the cracking and shedding of the coating is delayed, from 2 years to 3 and a half years, so that the marking can continue to be beautiful.
5. Precautions for construction of road marking paint at room temperature Road marking paint at room temperature is fast-drying, wear-resistant and weather-resistant. Directly used for marking on asphalt or cement pavement. Composition: One-component solvent-based coating, which is composed of acrylic resin with abrasion resistant pigment, extender pigment, auxiliary agent, solvent, etc.
Main use Normal temperature road marking paint is mainly used for asphalt, cement road marking, and also for small areas such as outdoor grounds (bus stations, parking lots, garages).
Applicable conditions Normal temperature road marking paint is suitable for clean, dry concrete and asphalt pavement, and can also be used for epoxy floor surface.
Construction process 1. The construction pavement should be kept clean and dry.
2. Stir the product evenly before construction, and use professional thinner to adjust the viscosity for painting.
3. If there are foreign impurities, it should be used after filtering.
Construction conditions Ambient temperature: 2 ℃ ～ 40 ℃; Relative humidity: 25% ～ 75%; Substrate temperature: 3 ℃ above dew point.
6. Introduction to various sizes of traffic markings Road traffic markings are traffic composed of various lines, arrows, text, patterns and elevation markings, physical markings, protruding road markings and outline markings that are planned or installed on the road Facilities, whose role is to convey road users' rules, warnings, guidelines and other information about road traffic, can be used in conjunction with signs or alone.
3.2 Reflective traffic markings shall be set for highways of all grades, urban expressways and trunk roads in accordance with the provisions of this section. Other roads can be marked as required according to this section.
3.3 Road traffic markings can be divided into the following three categories according to their functions:
a) Indicative marking line: a line indicating the roadway, driving direction, edge of the road, sidewalk, parking space, stop and deceleration hill;
b) Prohibition markings: marking markings for compliance, prohibition and restriction of road traffic;
c) Warning markings: markings to promote road users to understand the special situation on the road and to be more alert to prepare for contingency measures.
3.4 Road traffic markings can be divided into the following three categories according to the setting method:
a) Longitudinal markings: markings set along the road driving direction;
b) Horizontal markings: markings that cross the road driving direction;
c) Other graticules: character marks or other forms of graticules.
3.5 Road traffic markings can be divided into the following four categories according to their forms:
a) Line: a solid line or a dashed line drawn on the pavement, edge stone or elevation;
b) Characters: characters, numbers and various graphics and symbols drawn on the road;
c) Prominent road signs: Reflective or non-reflective bodies installed on the road to mark lane boundaries, edges, junctions, bends, dangerous sections, road width changes, road obstacle locations, etc .;
d) Contour markers: Reflective columns (or pieces) installed on both sides of the road to indicate the direction of the road and the outline of the roadway boundary.
4.3 Crossing the same-way lane boundary 4.3.1 The cross-over of the same lane lane is a white dashed line, which is used to separate the traffic flow in the same direction. It is set on the lane of the same direction lane. Under the condition of ensuring safety, the vehicle is allowed to cross the line for a short time.
4.3.2 When there are two or more lanes in the same driving direction, and vehicles are allowed to change lanes or cross the lane boundary of the lane for a short time, they should be able to cross the boundary of the same lane.
4.3.3 The line width that can cross the roadway in the same direction is generally 10cm or 15cm. For special applications such as rural roads and dedicated roads with very little traffic, the line width can be 8cm. Roads with a design speed of not less than 60km / h can cross the same-line roadway boundary line and interval lengths of 600cm and 900cm respectively. Roads with a design speed of less than 60km / h can cross the same-way roadway boundary line and Interval lengths are 200 cm and 400 cm, respectively.
4.4 Tidal lane line 4.4.1 The lane where the vehicle's driving direction can be changed according to the needs of traffic management is called the tidal lane. The double yellow dotted line composed of two yellow dotted lines juxtaposed as its indicator line indicates the position of the tidal lane.
4.4.2 The width of the yellow dotted line is 15cm; the proportion of the line segment and the interval should be consistent with the boundary of the same road segment that can be crossed in the same direction. The distance between the two lines is generally between 10 cm and 15 cm. The distance between the two lines can be adjusted appropriately while ensuring the width of the roadway.
4.4.3 Corresponding variable signs and lane driving direction signal control facilities shall be used to cooperate with the function of changing the lane driving direction with time, and corresponding physical isolation facilities may be used in conjunction.
4.5 Roadway edge line 4.5.1 The roadway edge line is used to indicate the edge of a motorway or to divide the boundary between a motorway and a non-motorway. When used to divide the boundary between a motorized lane and a non-motorized lane, it can also be referred to as a non-motorized boundary.
4.5.2 A solid white line at the edge of the roadway is used to indicate the edge of the roadway or the boundary between the machine and the vehicle that are prohibited from crossing. A solid white line at the edge of the carriageway should be set on all edges of the carriageway except for two-way four-lane and above roads except for entrances, intersections, and special sections that allow roadside parking.
The two-way three-lane and the following roads may not be set, but a solid white line should be drawn on the edge of the roadway in the following cases:
a) The road meets the narrow bridge and its upstream and downstream sections;
b) the curve section using the road design limit index and its upstream and downstream sections;
c) road sections where traffic flows merge and diverge;
d) the road section whose width changes;
e) the section where the roadside obstacle is closer to the road;
f) roads that frequently affect safe driving weather, such as heavy fog;
g) Non-motor vehicles or roads with more pedestrians and mixed traffic.
The solid white line at the edge of the roadway is generally 15cm or 20cm. In special applications such as rural roads and exclusive roads with very little traffic, the line width of the solid white line at the edge of the roadway can be 10cm.
The solid white line at the edge of the roadway can be in the form of a vibration marking.
4.5.3 The white dashed line on the edge of the roadway is used to indicate the edge of the roadway where the vehicle can temporarily cross the line. Vehicles driving across the dashed line of the edge should avoid other normal vehicles, non-motorized vehicles and pedestrians.
Where vehicles are allowed to cross the edge line at entrances, intersections, and on-street parking sections, white dashed lines at the edges of the roadway may be provided. When the distance between adjacent entrances and exits of urban roads is less than or equal to 100m, the white dashed line on the edge of the roadway is continuously set.
The general line width of the white dashed line at the edge of the roadway is 15cm or 20cm. In special applications such as rural roads and exclusive roads with very little traffic, the linewidth of the white dashed line at the edge of the roadway can be 10cm. They are 2m and 4m.
4.5.4 The dashed side of the white dashed solid line at the edge of the roadway allows vehicles to temporarily cross the line, and the solid side does not allow vehicles to cross the line to regulate the vehicle's trajectory. Where necessary, such as near bus stops and on-street parking sections, white dashed lines at the edges of the carriageway can be set. Vehicles crossing the line should avoid other vehicles, non-motorized vehicles and pedestrians.
The general line width of white dashed and solid lines at the edge of the roadway is 15cm or 20cm. For special applications such as rural roads and dedicated roads with very little traffic, the width of the white dashed and solid lines at the edge of the roadway can be 10cm. It is 15cm-20cm, and the dashed line segment and interval length are 2m and 4m, respectively.
4.5.5 In the section of a motor vehicle driving in one direction and a non-motor vehicle driving in both directions, a solid yellow single line shall be drawn between the motor vehicle lane and the opposite non-motor vehicle lane as the edge of the roadway. The left edge of a one-way road shall be marked with a single yellow solid line as the edge of the roadway. The yellow single solid line generally has a line width of 15cm or 20cm. In special applications such as rural roads and dedicated roads with very little traffic, the line width can be 10cm. The yellow solid line lanes can be in the form of vibration markings. .
4.5.6 When there is a physical isolation facility in the center of the road to separate the opposite traffic flow, the inner edge line of the roadway near the isolation facility shall be a white solid line; when urban roads use movable isolation facilities such as movable guardrails to separate the opposite traffic flow, The inner edge line of the driveway near the isolation facility may be a solid yellow line.
4.6 Left turn waiting area line 4.6.1 The left turn waiting area line is a white dashed line, which is used to indicate that the left-turn vehicle enters the waiting area to turn left during the straight ahead period.
4.6.2 The left turn waiting lane line shall be used when a left turn dedicated signal is provided and a left turn dedicated lane is provided. It is located at the front end of the left turn dedicated lane and extends into the intersection, but shall not hinder the normal operation of the oncoming vehicles travel.
4.6.3 The line of the left turn to be turned is two parallel and slightly curved white dashed lines with a line width of 15cm and a line segment and interval length of 50cm. The front end of the line shall be marked with a stop line. A white left turn guide arrow must be drawn in the area to be turned. The guide arrow is 3m long. Generally, it is drawn at the start position of the left turn area and before the stop line. When the left turn area is longer, The guide arrow can be set repeatedly in the middle, and only one guide arrow can be set when the left turn area is short.
4.6.4 In conditional locations, the left turn area to be turned can be set in the form of fewer changes and more changes.
4.7 Intersection guidance lines 4.7.1 When the area of a plane intersection is large, the shape is irregular, or the traffic organization is complicated, when vehicles find it difficult to find an exit lane, an intersection guidance line should be provided to assist the vehicle in driving and turning.
4.7.2 Intersection guide lines are broken lines, with solid line segments of 2m, intervals of 2m, and line width of 15cm.
4.7.3 Intersection guidance lines connecting the same-way lane boundary or non-equipment boundary lines are white curved (or straight) dashed lines; intersection guidance lines connecting the opposite lane boundaries are yellow-curved (or straight) dotted line.
4.8 Guidance lane line 4.8.1 The lane boundary of the lane set at the intersection entry section is called the guidance lane line and is used to indicate the position of the guidance lane where the traffic is traveling in the guidance direction.
4.8.2 The guide lane line with a fixed guidance direction is a solid white line. The general line width is 10cm or 15cm. For special applications such as rural roads with very little traffic and dedicated roads, the line width can be 8cm.
4.8.3 The length of the guide lane line shall be determined according to the geometric shape of the intersection and the needs of traffic management, and it is generally not less than 30m.
4.8.4 The variable guidance lane line is used to indicate the position of the guidance lane where the guidance direction can be changed as needed.
4.8.5 The setting length of the variable guide lane lines should not be less than the length of other guide lines. Guiding arrows should not be set in the guide lanes marked with variable guide lane markings. Variable lane guidance lines should be used in conjunction with variable lane driving direction signs. Vehicles entering the variable guidance lane should drive in the direction indicated by the lane direction sign.
4.9 Pedestrian crossing line 4.9.1 The pedestrian crossing line is a white parallel thick solid line (zebra crossing), which not only indicates the path that allows pedestrians to cross the road under certain conditions, but also warns motorists to pay attention to pedestrians and non-motorized vehicles crossing the street.
4.9.2 When there are no crossing facilities such as overpasses and underground passages at road intersections and sections where pedestrian crossings are concentrated, pedestrian crossing lines should be planned; if there are no pedestrian crossing facilities on the roads in front of schools, kindergartens, hospitals, and nursing homes, Mark pedestrian crossings and set signs.
4.9.3 The crosswalk line is generally perpendicular to the centerline of the road. In special cases, the angle between the crosswalk line and the centerline should not be less than 60 ° (or greater than 120 °), and the stripes should be parallel to the centerline of the road. The minimum width of the crosswalk is 3m, and It can be widened by 1m according to the number of pedestrians. The width of the pedestrian crossing line is 40cm or 45cm, and the line interval is generally 60cm. It can be adjusted according to the lane width, but it should not exceed 80cm. This is shown in Figure 14. The setting distance of the pedestrian crossing lines is determined according to actual needs, but the distance between the pedestrian crossing lines on the road section should generally be greater than 150m.
4.9.4 When setting up a crosswalk on a road section without a signal light control, a stop line and a crosswalk warning sign should be set on the road surface before reaching the crosswalk, and coordinated with the setting of a crosswalk indication sign. If necessary, a crosswalk warning sign and a crosswalk can also be added. The teaser logo is a white diamond pattern.
4.9.5 Generally, the width and form of the crosswalk shall be determined after comprehensively considering various factors such as pedestrian flow, pedestrian age, road width, traffic volume, vehicle speed, and line of sight.
On roads with a pavement width of more than 30m, a safety island should be set up on the pedestrian crossing at the central divider or the dividing line of the opposite roadway. The length of the safety island should be greater than or equal to the width of the crosswalk, and the width should be the same as that of the central divider or determined according to the actual situation. In cases where the area of the safety island can not meet the needs of pedestrians waiting for signal release, and the bridge pier or other structures obstructing the driver's view, the crosswalk line can be misplaced. At intersections where pedestrian traffic is particularly heavy, two pedestrian crossings can be set up side by side to make the virtual and actual sections of the zebra crossing wrong, and supplemented by directional arrows to indicate that pedestrians cross the street by left and right. The length of the directional arrows is generally 100 cm.
Observation on how to reduce the bottom leakage of hot melt kettle, the same brand of hot melt kettle:
Some construction teams do not see much squared area after one year, but they have to change the bottom of the kettle every 1-2 years;
Some construction teams plan squares of more than 100,000 square meters each year, and do not need to change the bottom of the kettle in 5-6 years!
This sparked our curiosity, attention and thinking.
First: Before starting, pour 2 packs of material and heat it with a small (small) fire; the material will start to melt and stir at this time. The material is now fluid and has good thermal conductivity. .
Second: Before finishing work, try to use up the material in the kettle, otherwise the unused material will become a large block the next day, and it takes time to open a small fire, and the fire will affect the service life of the bottom of the kettle.
Third: The bottom of the iron kettle that contacts the gas barbecue is susceptible to decay during the work stoppage. If possible, buy a hot-melt kettle made of stainless steel.
How to reduce the cracking of hot-melt marking lines starts from the following five aspects, which can effectively reduce the cracking of marking lines.
First, the coating should be thoroughly boiled and stirred. Some of our work materials have just arrived and found that the temperature meter has a temperature of 200 ° C. It's like we cook porridge: it's not delicious when the lid is lifted (boiled), but it must be simmered for a few minutes. It's not difficult to understand: when the temperature of the material is reached, don't put the material immediately, keep it warm and stir for 3-5 minutes, let the resin, polyethylene wax and other additives in the material fully melt and stir with the powder evenly. Just like manually mixing the concrete, whether it is evenly mixed, directly affects the strength of the concrete. In other words: if the temperature is not in place and the raw materials are not uniformly stirred, the marked lines will crack!
2. Don't reduce the material temperature for the material saving. Some of our workgroups have a low price and come across coarse-grained pavement. To save material, reduce the material temperature, and reduce the leveling of the material, this will cause micro-beads to persist. Shen (different reflection), not wear-resistant, easy to crack!
Third, the proportion of sand powder is very important. The construction team deliberately emphasized the leveling of the material and the precipitation of the material. In order to cater to this, the coating manufacturers switched to small and small-sized quartz sand, even less quartz sand, and increased the amount of mineral powder instead. To ensure leveling and sedimentation. Our coating is actually similar to mixing commercial concrete. Our resin is equivalent to cement water in concrete, our quartz sand is equivalent to stone in concrete, and our mineral powder is equivalent to yellow sand in concrete. If we compare our 1.8mm marking line to 18cm cement pavement, in order to take into account the labor intensity of the paving workers, using small stones or more sand will affect the strength of the pavement and even crack. Ensure that the particle size of the moderate quartz sand (0.6mm) will enhance the abrasion resistance of the marking line and delay cracking, and there may be micro-precipitation in the dotted line and the irregular marking line. Inconvenience to your construction, you need to shake it. The content of organic matter in the coating is a prerequisite to ensure no cracking!
Fourth, double-cylinder cooking materials are thoroughly cooked and stirred. It is recommended to use a dual-cylinder to simultaneously burn one color of material. If possible, make sure that the material is fully filled to ensure that our materials are evenly mixed on the basis of thorough cooking!
Fifth, the primer is full. Whether the primer is pre-coated and the fullness of the primer will also delay the cracking of the marking line!
Features of two-component marking coatings Two-component marking coatings are group A and B coatings formulated from two different sets of low-viscosity active acrylic resins as film-forming agents. Add the curing agent to component B and mix well before construction. The two components are drawn to the road through a two-component scribing machine, and a crosslinking reaction occurs quickly to form a solid coating film (marking line).
The two-component coating is superior to the specificity of its formula, giving the following characteristics to the marking line:
● Methyl methacrylate resin combined with plasticized acrylic monomer makes the marking line with special toughness, which can effectively avoid its cracking.
● Before being crosslinked and cured, the low molecular weight active polymer has good permeability to the capillary pores of the pavement, and forms an anchoring effect after being tightly combined with the cement concrete pavement, which enhances the adhesion of the marking line and is not easy to peel off.
● Polymerization during the film formation process forms a network-like macromolecular structure, connecting the components of the coating into a dense whole, with high mechanical strength and super wear resistance.
● After the two components are polymerized to form a new network molecule, it is a cross-linked network with a very large molecular weight. The marking line does not break at low temperatures, does not soften at high temperatures, and has almost no aging during use.
● The anti-fouling self-cleaning has obvious advantages compared with ordinary markings. It is known as "ceramic jade markings".
● Contains no organic solvents and high solids content, and almost no solvents evaporate from the system during film formation.
Features of two-component marking line:
⊙ Good flexibility⊙ Excellent adhesion⊙ Excellent abrasion resistance⊙ Excellent weather resistance⊙ Outstanding self-cleaning⊙ Environmentally friendly two-component marking paint Introduction to two-component basics: Two-component marking paint is composed of two Or a durable coating formed by mixing two or more different components at a certain ratio and uniformly coating the pavement, and performing a chemical reaction on the pavement.
According to the construction form of two-component marking, two-component road marking coatings are usually divided into several types such as spray type, structural type, and scratch coating type.
Spray type two-component marking paint is divided into two components, A and B. Before construction, component B should be added with a certain curing agent as required. During construction, the two components A and B are placed in different isolated containers, mixed with each other at a certain proportion at the spray gun, applied to the road surface, and a chemical reaction occurs on the road surface. The dry time of the paint film is not affected by the coating thickness. The impact is only related to the A and B components and the amount of curing agent, surface temperature, and climate.
Introduction of hot melt road marking paint construction:
Hot-melt marking paint is a solid powder at normal temperature. During construction, put the paint into the melting kettle. The temperature in the kettle is controlled between 180 ° C and 210 ° C, and it is stirred while melting. After melting, it will melt and flow. Put it into the insulation melting hopper of the scribing cart. The molten coating is then introduced back into the scribing hopper and kept warm to keep the material molten. There is a pre-marking machine to mark the position before the scribe line, and the primer is applied by the lower applicator at the application position indicated by the design icon. After the undercoat agent is dry, apply the marking paint. When starting the line, the line bucket should be placed on the road. Because there is a certain gap between the line bucket and the ground, when the line is moving forward, a neat marking line is scraped by automatic flow. The glass bead spreader can automatically and evenly spread a layer of reflective glass beads on the marking line.
Requirements for hot-melt road marking paint on glass beads:
Glass beads are colorless transparent spheres, which have the functions of refracting, focusing and directional reflection of light; the roundness rate should be high; the impurities should be small, the particles must be uniform, and glass powder cannot be used. The reflection of the reticle is derived from the glass beads mixed into the coating in advance and the glass beads spread on the coating surface. The glass beads have high roundness, high refractive index, and reasonable particle size distribution. The reflection effect of the reticle is good. The particle size of the glass beads is matched in a certain proportion to ensure that the glass beads in the marking coating are firmly adhered. During use, glass beads of different sizes will be exposed and peeled off as the marking line wears out, so that the marking line can continue to reflect light.