Hot Melt Coatings with Synthetic Resins and Waxes for Strong
Adhesion and Durability in Various Applications
Product Description
Hot melt coatings are a type of coating materials that have gained
significant popularity in various industries.
They are typically made from a combination of resins, waxes,
pigments, and other additives. The resins, such as ethylene-vinyl
acetate (EVA) or polyester resins, form the main binding component
that gives the coating its adhesive and cohesive properties. Waxes
are added to improve the flow characteristics and enhance the
durability of the coating when it solidifies.
One of the remarkable features of hot melt coatings is their quick
drying or setting time. Once heated to a molten state and applied
onto a surface, they cool down rapidly and solidify, forming a
tough and durable protective layer. This enables efficient
production processes as there's no need to wait for long periods
like with some solvent-based coatings for drying.
Hot melt coatings find wide applications. In the packaging
industry, they are used for coating paper and cardboard to make
them moisture-resistant and provide better printability. In road
marking, hot melt coatings are applied to create clear and
long-lasting markings on roads, withstanding heavy traffic and
various weather conditions. They are also utilized in the
manufacturing of furniture and wooden products to offer a
protective finish and enhance the appearance.
Moreover, hot melt coatings are environmentally friendly in some
aspects. Since they don't rely on solvents that can emit harmful
volatile organic compounds (VOCs) during the drying process, they
contribute less to air pollution.
In conclusion, hot melt coatings play an important role in multiple
fields with their unique properties and diverse applications, and
they continue to be developed and improved to meet the changing
demands of different industries.
Key Characteristics of Hot Melt Coatings:
Thermoplastic Nature:
- The term "thermoplastic" refers to materials that become soft when
heated and harden when cooled. Thermoplastic paint remains solid at
room temperature but becomes liquid when heated to 180–220°C for application.
Fast Drying and Quick Reopening:
- Thermoplastic paint solidifies quickly as it cools after being applied. This fast drying time means roads
or other surfaces can be reopened to traffic almost immediately
after the application, minimizing downtime.
Durability:
- Once hardened, thermoplastic paint is extremely durable, making it resistant to abrasion, weathering, and chemical damage.
It is designed to withstand high traffic volumes, UV exposure, and
harsh environmental conditions, including heavy rain or snow.
Reflectivity:
- Thermoplastic paint contains glass beads embedded in or scattered onto its surface. These beads help
reflect light from vehicle headlights, making the markings highly
visible at night or in low-light conditions, which is especially
important for road markings.
High Adhesion:
- It adheres well to various surfaces such as asphalt, concrete, and steel, which is why it is commonly used for road markings, airports, sports courts, and industrial floor markings.
Detailed Process of Hot Melt Paint Construction
1. Road Cleaning
Before operation, the nearby area must be cleaned to ensure that
there are no impurities such as oil, water, fallen leaves, weeds,
ect., so as not to affect the adhesion effect, flatness and
reflection effect of the line.
2. Set the Point and Mark Line
In the process of sampling, the calculation and measurement must be
carried out in strict accordance with the construction drawings.
Measure the several lanes that need to be drawn on the road, set
the point, and then mark it with a stone pen. Use titanium dioxide
powder to glue the rope for the elastic line. After the rope is
removed, it will be corrected and improved to ensure that the line
shape is clear and accurate.
3. Apply the Primer
The lower coating is a common binder in hot melt marking
construction. It is applied to the highway road surface, which can
make the hot melt coating better adhere to the road surface.
4. Spray the Paint
Before construction, first check the relevant coating equipment.
Then heat the paint.
When the trolley moves forward, the paint will form a coating film
on the road, and a layer of glass beads should be sprinkled on the
coating film during the coating process.
When the trolley moves forward, take the reference line as the
ruler, control the thickness and width of the line, and ensure the
coordination, clarity and smoothness of the line connection between
the straight line and the curve.
Note: During the coating process, in order to avoid the
sedimentation and separation of the paint, it is necessary to stir
the paint frequently.
5. 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.
Technical Specification
| Density(g/cm3) | 1.8-2.3 |
| Softening point (℃) | 90-125 |
| Compressive Strength(MPa) | ≥12 |
| Glass bead content(%) | 0-30% |
| Liquidity | 35±10 |
| Packing | 25kg/bag |
| Color | White/Yellow/Blue/Red/Green/Customized |
| Executive standard | JT/T280-2004/AASHTO/BS3262/Customized |
| Appearance | Powder |
| Construction temperature | 180℃-220℃ |
| Whiteness | 70-85(Customized) |
| Inverse coefficient | 50-550 |
| Warranty | 12 months |
| Storage Method | Avoid light and moisture |
| Packing Size | 45×70×5CM |
