OSD-820B High-Flow Gear Pump Hot Melt Adhesive Machine

The OSD-820B is a high-output gear pump hot melt glue machine designed for production lines that require a continuous adhesive supply of approximately 15–25 kg/h without installing a 380V power supply. With a 20 kg melting tank, 4,500W heating power and a large-displacement 12 cc/rev gear pump, it delivers high-volume adhesive output while operating on 220V power.

For medium-sized factories that need reliable hot melt adhesive delivery but prefer to avoid upgrading their electrical infrastructure to three-phase 380V, the OSD-820B offers a practical solution for continuous industrial bonding applications.

1. 20 kg Tank and 4,500W Heating System

Achieving a melting capacity of 20 kg/h on a 220V power supply requires careful matching of heating power, tank capacity and electrical infrastructure.

The OSD-820B features a 20 kg melting tank and 4,500W heating system to support continuous adhesive melting and supply. Its electrical load requires appropriate wiring and circuit protection. Before installation, we recommend confirming the actual supply voltage, cable specifications, breaker rating and circuit capacity with a qualified electrician.

Proper electrical preparation helps reduce nuisance tripping and supports stable operation during demanding production cycles.

2. High-Displacement 12 cc/rev Gear Pump

The OSD-820B is equipped with a large-displacement 12 cc/rev gear pump designed for high-output adhesive delivery.

Compared with a smaller 6 cc/rev pump, a 12 cc/rev pump can theoretically deliver approximately twice the volumetric displacement per revolution under comparable operating conditions. This allows the required adhesive flow to be achieved at a lower pump speed, depending on adhesive viscosity, operating pressure and system conditions.

Potential benefits include:

• Stable high-volume adhesive delivery: Supports continuous bonding processes that require a relatively high adhesive flow rate.
• Lower operating speed for a given flow rate: Helps reduce the need for excessive pump speed under comparable conditions.
• Reduced mechanical stress: Appropriate pump sizing can help limit unnecessary high-speed operation and associated wear.
• Consistent production performance: Suitable for industrial applications requiring continuous hot melt adhesive supply.

The 12 cc/rev gear pump is particularly useful for mattress foam spraying, appliance liner bonding, automotive interior lamination and other production processes that consume larger quantities of hot melt adhesive.

3. Efficient Melting and Adhesive Filtration

The OSD-820B combines a 20 kg melting tank with a high-displacement gear pump to support continuous adhesive processing.

Its progressive preheating system gradually melts the adhesive from the outer surfaces toward the center, helping promote more uniform melting. A non-stick PTFE coating helps reduce adhesive buildup on treated surfaces, while a dual-layer 100-mesh filter system positioned before the pump helps capture contaminants before they enter the pumping system.

These features support cleaner adhesive delivery and help protect downstream components when the machine is operated with compatible hot melt adhesives and maintained according to the recommended procedures.

4. Independent Temperature Control for 1–4 Hoses

The OSD-820B supports 1–4 hot melt hoses, making it suitable for production lines with multiple dispensing stations.

Each hose has independent temperature control, allowing operators to configure temperature settings according to the requirements of different dispensing points and process conditions.

The PLC touchscreen provides access to key operating information, including:

• Temperature readings
• Adhesive pressure
• Pump speed
• Cumulative adhesive delivery

These operating parameters help operators monitor production conditions and review machine readings during shift handovers.

The inverter-based protection system helps protect the pump drive during abnormal operating conditions, such as excessive pressure or a blocked adhesive line. Overtemperature alarms and protective shutdown functions help improve operational safety. Actual protection behavior depends on the configured control system and machine specifications.

5. Key Features of the OSD-820B

• 20 kg melting tank: Supports continuous adhesive melting for production processes with relatively high consumption.
• 4,500W heating power: Designed for a rated melting capacity of 20 kg/h under suitable operating conditions.
• 12 cc/rev gear pump: Large-displacement pump for high-volume adhesive delivery.
• 220V power supply: An option for factories that do not have a 380V supply available at the installation site.
• 1–4 hot melt hoses: Supports multiple dispensing stations with independent hose temperature control.
• PLC touchscreen control: Displays temperature, pressure, pump speed and cumulative delivery readings.
• Protective control functions: Helps protect the machine against specified abnormal operating conditions.
• Industrial floor-standing design: A robust cabinet-style unit intended for floor installation and leveling.

6. Technical Specifications

Note: Actual melting capacity and adhesive delivery depend on adhesive formulation, viscosity, operating temperature, ambient conditions and production requirements. Confirm electrical compatibility and installation requirements before commissioning.

7. Applications of the OSD-820B Hot Melt Glue Machine

The OSD-820B is designed for industrial production processes that require continuous hot melt adhesive delivery at relatively high flow rates.

1. Mattress Manufacturing

Suitable for mattress foam spraying, foam lamination and other mattress production processes that require a continuous supply of hot melt adhesive.

2. Home Appliance Manufacturing

Can be integrated into adhesive application processes for refrigerator liners, appliance interior components and other compatible appliance assembly applications.

3. Automotive Interior Manufacturing

Suitable for automotive interior lamination and bonding processes involving interior trim, composite panels and other compatible components.

4. Nonwoven Fabric Lamination

Supports continuous adhesive application in nonwoven converting and lamination processes, subject to the selected adhesive and production configuration.

5. Industrial Packaging

Can supply hot melt adhesive to compatible packaging equipment for bonding and sealing applications requiring continuous adhesive delivery.

8. Is the OSD-820B Right for Your Production Line?

The OSD-820B is worth considering if your production line has the following requirements:

• Adhesive consumption of approximately 15–25 kg/h
• A 220V power supply at the installation site
• One to four adhesive dispensing stations
• Continuous production with relatively high adhesive consumption
• A need for a larger gear pump without upgrading to a 380V supply

Before selection, confirm that the available electrical circuit can support the machine’s rated load. A 220V connection alone does not guarantee sufficient electrical capacity.

9. OSD-820B vs. Other Oushida Hot Melt Glue Machines

Choose the machine according to your actual adhesive consumption, power supply and production requirements.

• OSD-820B: A 20 kg tank, 4,500W heating system and 12 cc/rev gear pump for applications requiring a rated melting capacity of 20 kg/h on 220V power.
• OSD-830B: A 30 kg tank, 6,500W heating system and 12 cc/rev gear pump for production lines requiring a higher melting capacity and a compatible 380V three-phase supply.
• OSD-860A / OSD-8100: Consider these larger-capacity models when your production line requires a substantially larger melting tank or higher adhesive throughput. Confirm the exact specifications with our technical team.

If your adhesive consumption is around 15–25 kg/h and your factory prefers to retain its existing 220V power supply, the OSD-820B may be a suitable option. If your consumption exceeds 30 kg/h or your facility already has a suitable 380V three-phase supply, a higher-capacity model may be more appropriate.

Contact Oushida for a Suitable Hot Melt Adhesive Solution

Choosing the right hot melt glue machine involves more than matching tank capacity. Adhesive viscosity, target flow rate, operating temperature, hose length, dispensing pressure and the number of application stations all affect system performance.

Contact Oushida with your adhesive type, estimated hourly consumption, application process and available power supply. Our team can help evaluate a suitable hot melt adhesive system for your production line.