Eco friendly Hot Melt Marking Paint Quick Drying Paint Line Road Thermoplastic Pavement Road Paint
Description of Thermoplastic Paint
1. Material Composition
Resin Type and Quality: High-quality thermoplastic resins, such as hydrocarbon or maleic resins, provide better binding properties and durability.
Pigments: Stable and durable pigments (e.g., titanium dioxide for white lines) ensure the coating maintains its color and integrity over time.
Glass Beads: Glass beads not only improve reflectivity but also affect wear resistance. Properly embedded beads enhance durability, while poorly embedded beads can increase wear.
Fillers: The type and proportion of fillers (e.g., calcium carbonate) impact the mechanical strength and abrasion resistance.
2. Application Thickness
Thickness of the Coating Layer: A properly applied layer (typically 1.5-2.5 mm for road markings) ensures sufficient material to resist wear. Thinner layers wear out faster under traffic.
3. Road Surface Compatibility
Surface Type: Adhesion is better on smooth, well-prepared surfaces (like asphalt) than on rough or porous surfaces, which can accelerate wear.
Surface Preparation: Improperly cleaned or primed surfaces can lead to poor bonding and quicker wear.
4. Traffic Conditions
Traffic Volume and Weight: Roads with heavy traffic or high loads (e.g., trucks) subject coatings to increased abrasion, leading to faster wear.
Vehicle Speeds: Higher speeds generate more friction and heat, which can degrade the coating faster.
5. Environmental Factors
Temperature Variations: Extreme heat or cold can cause thermal expansion or contraction, leading to cracking or flaking of the coating.
Rain and Moisture: Prolonged exposure to water can weaken the bond between the coating and the road surface.
UV Radiation: Prolonged sun exposure can degrade the resin and pigments, reducing wear resistance.
6. Application Process
Heating Temperature: Proper heating (180°C-220°C) ensures the coating melts uniformly and bonds well to the surface. Overheating or underheating can compromise adhesion and durability.
Mixing Uniformity: Uneven distribution of components (resin, glass beads, fillers) during application can result in weak spots that wear out faster.
Curing Time: Allowing the coating to cure adequately ensures it reaches its optimal hardness and wear resistance.
7. Glass Bead Quality and Embedding
Bead Hardness: Harder beads provide better resistance to abrasion and longer-lasting retro-reflectivity.
Bead Coverage: Evenly distributed beads that are embedded at the right depth (~50% into the coating) balance reflectivity and durability.
8. Maintenance Practices
Cleaning: Regular cleaning of road surfaces prevents dirt and debris from accelerating wear on the coating.
Repairs: Timely patching of damaged or worn sections prevents further degradation.
9. Compliance with Standards
Testing and Certification: Coatings manufactured and applied according to recognized standards (e.g., BS 3262 or ASTM) often exhibit better wear resistance because they meet stringent quality requirements.
Detailed Process of Thermoplastic Paint Construction
1. Prepare the Surface
- Cleaning: Ensure the surface is free of dirt, grease, oil, dust, and loose debris.
- Repair: Fix cracks or uneven areas to create a smooth surface.
- Drying: The surface must be dry to ensure proper adhesion
2. Mark the Layout
- Use chalk, tapes, or temporary markers to outline the areas to be painted (lines, symbols, or shapes).
- Verify measurements against specifications or local standards.
3. Heat the Thermoplastic Paint
- Use a melting kettle or thermoplastic preheater to melt the paint.
- Heat to the recommended temperature, typically 180–220°C (356–428°F).
- Avoid overheating, as it may degrade the paint and affect quality.
- Stir continuously to ensure uniform consistency.
4. Primer Application (if required)
- Apply a primer to the surface if recommended by the manufacturer.
- This is especially needed for non-porous surfaces like concrete or asphalt.
- Allow the primer to dry before applying the paint.
5. Apply the Paint
- Screed Method: Use a screed box to create uniform thickness for road markings.
- Spray Method: Use a spray machine for even application on large or irregular areas.
- Extrusion Method: For thicker, raised markings.
- Hand Application: For small areas or repairs, manually pour and spread the molten paint.
- Preformed Thermoplastic: Lay pre-cut sheets or symbols on the surface and heat with a propane torch until adhered.
6. Check and Correct
After the coating is completed, check and correct the line shape, check the spread of glass beads, etc.
After confirming that it is correct, the construction site will be cleaned up.
After the line is dried and hardened, the relevant construction equipment can be transferred, the safety facilities can be dismantled, and the traffic can be opened.
| Customized Formula |
| Customized Formula | Content(Customized range) | Characteristics |
| C5 Resin | 10%-22% | Fluidity Toughness Hardness Adhesion |
| Titanium Dioxide | 0.5-10% | 0.5%-30% |
| Premixed glass beads | 0%-30% | Reflective after surface wear |
| Calcium Carbonate Sand | 30%-80% | Whiteness Wear-resistant Hardness |
| PE Wax | 1%-1.5% | Cold and heat resistant |
| EVA | 0.5%-1% | Crack resistance |
| Plasticizer | 1%-1.5% | Toughness |
Tips for Safe and Effective Application
- Protective Gear: Wear gloves, heat-resistant clothing, and safety goggles.
- Temperature Control: Monitor paint temperature to avoid overheating.
- Traffic Management: Use barricades or warning signs to manage traffic during application.
- Weather Conditions: Avoid application during rain or extreme temperatures.
By following these steps, thermoplastic paint can be effectively applied to create durable, high-quality road or surface markings.
How to Select Suitable Thermoplastic Paint
Choosing the right thermoplastic paint for road marking depends on several factors to ensure durability, visibility, and compliance with standards. Here are the key considerations:
1. Application Environment
- Climate Conditions: Consider weather conditions such as temperature, humidity, and rainfall. Some paints are specifically formulated for extreme temperatures or high-moisture areas.
- Traffic Volume: High-traffic areas require more durable paints with better wear resistance.
- Surface Type: Ensure compatibility with the road surface material (e.g., asphalt or concrete).
2. Performance Requirements
- Durability: Select a paint with high resistance to wear and tear, especially for heavy-traffic roads.
- Reflectivity: Opt for paints that allow for the embedding of glass beads to enhance nighttime visibility.
- Skid Resistance: For safety, especially in wet conditions, choose paints with anti-skid properties.
3. Compliance with Standards
- Check if the paint complies with local regulations and standards for road markings, such as color, thickness, and reflectivity.
4. Application Method
- Some paints are designed for specific application methods, such as spray, screed, or extrusion. Choose paint compatible with your equipment.
5. Color and Visibility
- Select colors with high contrast to the road surface (e.g., white, yellow) and UV-stable pigments to prevent fading.
6. Drying Time
- In high-traffic areas, choose a fast-drying formula to minimize disruption.
7. Cost Efficiency
- Balance initial cost with long-term performance. High-quality thermoplastic paint might have a higher upfront cost but longer durability, reducing maintenance expenses.
8. Supplier Reliability
- Purchase from reputable manufacturers or suppliers who provide quality assurance, technical support, and consistent product performance.
By considering these factors, you can choose thermoplastic paint that meets your project’s specific needs and ensures long-lasting, high-quality road markings.
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