RH-610 PUR hot melt adhesive compound machine

PUR hot melt adhesive compound machine is a polymer that does not require solvents, does not contain water, and is 100% solid meltable. It is solid at room temperature, and it is heated and melted to a certain extent to become fluid and viscous. Liquid adhesive, a device that coats PUR hot melt adhesive on the substrate, and then combines another substrate with the coated substrate. PUR (Polyurethane Reactive) is called moisture curing reactive polyurethane hot melt adhesive in Chinese, also known as moisture curing reactive polyurethane hot melt adhesive laminating machine, or PUR hot melt adhesive coating laminating machine.
PUR hot-melt adhesive composite machine does not need drying equipment due to this process, and has low energy consumption: it does not contain solvents (hot-melt adhesive is 100% solid content) and pollution-free, and operators will not be exposed to a large amount of residual glue due to cleaning. formaldehyde. Compared with the traditional solvent-based (oil glue) and water-soluble adhesives, it effectively solves the inherent disadvantages of the traditional process, and is an ideal production tool for the replacement of the composite machine industry.
Solvent-based and water-based adhesives require an oven (or may need to renovate the existing oven) when curing, and take up more plant space, while increasing the energy consumption of the plant, generating more wastewater and sludge, and production operations. The requirements are stricter, and the disadvantage of solvent glue is obvious, that is, it is very unfriendly to the environment (most of the solvents are harmful). Solvent-based adhesives pollute the environment very seriously. With the improvement of people’s environmental awareness and the establishment and improvement of related laws, the application of solvent-based adhesives is declining at a certain rate every year. Water-based glue has disadvantages such as poor water resistance, poor electrical properties, long drying time, and high energy consumption. Its application is also declining at a certain rate every year. PUR hot-melt adhesive has the advantages of stable performance, high raw material utilization rate, fast production speed, high yield, small equipment footprint and small investment, and has a tendency to gradually replace solvent-based adhesives.
PUR hot melt adhesive compound machine equipment and the working principle of each component
PUR hot melt adhesive machine (abbreviation: PUR hot melt adhesive machine) equipment: it is a kind of solid PUR hot melt adhesive that can be melted, and the melted glue that becomes liquid is transported to the glue coating device through the pressure device to the substrate. Apply coating. It is an electromechanical device integrating precise temperature control function, fluid pressurized conveying function and extrusion coating function. It also has the function of automatic control and automatic tracking of production line speed.
Host: with heating and heat preservation, glue melting, glue output, glue pressure control, primary filtration and other functions. The temperature of the host should be controlled at 5-10 degrees higher than the melting point of the glue, so that it has a certain fluidity and pressure Control is more accurate.
Throat: It has the functions of heating and heat preservation, diverting glue, and outputting liquid hot melt glue from the host to the gun holder module. The temperature can be kept at a temperature slightly higher than the melting point of the glue.
Gun seat: It has the function of heating and heat preservation, secondary filtration, and conveying the glue to the gun body, and heating the compressed air as needed. The temperature can be increased appropriately according to the glue spraying effect. Make the fluidity of the glue better.
Gun body: It has the function of opening and closing the glue, and is equipped with various nozzles and scrapers according to the needs to meet the needs of users. There are spiral spray guns, coating scraping guns, fiber spray guns, Z-shaped spray guns, point guns, etc. wait.
Automatic compensation control system: with output signal to control the solenoid valve, the compressed air controlled by the solenoid valve drives the work of the gun body to control the opening and closing of the glue. And output 0-10V DC voltage to control the inverter to drive the motor to rotate. The output voltage is directly proportional to the speed of the production line being tested. Glue position, glue breaking length and tracking voltage can be adjusted online. Devices that detect the speed of the production line include proximity switches, rotary encoders, etc.
PUR hot-melt adhesives are collectively referred to in the industry. In fact, there are many types of hot-melt adhesives, including EVA, PA, PES, PUR, pressure-sensitive adhesive hot-melt adhesives, and so on.
PUR hot melt adhesive characteristics
The main component of PUR hot melt adhesive is isocyanate-terminated polyurethane prepolymer. The adhesiveness and toughness (elasticity) of PUR can be adjusted, and it has excellent bonding strength, temperature resistance, chemical corrosion resistance and aging resistance.
⒈PUR hot melt adhesive is solid, when heated to a certain extent, it melts into a liquid and spreads it on the substrate, and it will not melt again after curing.
2. Moisture curing, no drying process, fast and energy-saving; the adhesive layer has certain flexibility, hardness, and certain toughness.
3. Excellent initial strength, but also has the function of cross-linking and curing, and the final bonding strength is higher;
4. Single-component type, easy for industrial automation and mechanized operation, high production efficiency.
5. Because the product itself is solid, it is convenient for packaging, transportation and storage.
6. Does not contain any organic solvents, 100% solid content, non-polluting, non-toxic, green and environmentally friendly.
7. Excellent heat resistance, water resistance, chemical resistance, durability, etc.
8. And it is favored by the advantages of simple production process, high added value, strong bonding strength and fast speed.
9. Hot-melt adhesive has stable performance, high raw material utilization rate, fast production speed and high yield.
10. The equipment occupies a small area and has the advantages of small investment.