Meler Micron+ Drum 20 Polyurethane (PUR) Hot Melt Pail Unloader – 5 Gallon

Compact PUR Pail Unloader for Precision Handling of Reactive Hot Melt Adhesives

The Meler Micron+ Drum 20 PUR is a compact hot melt pail unloader engineered specifically for processing moisture-sensitive PUR (polyurethane reactive) adhesives in 5 gallon (20 liter) pails for low-volume, precision-controlled applications. Built to handle reactive materials, the system maintains a controlled melting environment to help minimize exposure to ambient moisture, prevent premature curing, and preserve adhesive performance. With melting capacity up to 44 lb/hr (20 kg/hr), it delivers consistent, repeatable adhesive flow while maintaining stable viscosity and minimizing material waste.

Sequential zone heating and a thermally balanced melting plate maintain uniform temperature across the adhesive surface, helping protect reactive PUR materials from thermal stress while ensuring stable viscosity and controlled output. Integrated controls with real-time monitoring allow precise adjustment of temperature and pump performance, while flexible pump configurations support a wide range of PUR dispensing requirements. Its compact footprint makes it ideal for intermittent production, specialty bonding processes, and applications requiring careful handling of reactive adhesives.

For higher throughput and continuous PUR processing environments, see the Micron+ Drum 200 PUR system.

Key Advantages of the Micron+ Drum 20 PUR for Reactive Hot Melt Adhesives

• Designed for Reactive PUR Adhesives: Maintains a controlled melting environment to protect moisture-sensitive materials from premature curing, ensuring consistent performance and extended adhesive usability.
• Precision PUR Flow Control: Integrated controls and pump configurations enable accurate, repeatable dispensing of reactive adhesives in sensitive applications.
• Sequential Zone Heating System: Heats adhesive progressively through controlled zones to maintain stable temperature and reduce thermal stress on reactive PUR materials.
• Thermally Balanced Melting Plate: Ensures uniform heat distribution across the adhesive surface to support stable viscosity and consistent application performance.
• Configurable Pump Output for Precision Dispensing: Supports multiple pump sizes with single or double pump configurations to match precise PUR application requirements.
• Integrated Control System with Real-Time Monitoring: Displays temperature, pump speed, and system status, allowing accurate process control for sensitive adhesive applications.
• Compact, Serviceable Design: Space-efficient footprint with accessible components simplifies installation, reduces maintenance time, and supports use in space-constrained production environments.

PUR System Specifications

• Model: Micron+ Drum 20 PUR
• Drum Capacity: 5 Gallon Pail (20 Liter)
• Compatible Materials: PUR (Polyurethane Reactive) Hot Melt Adhesives
• Melting Plate: Smooth and Radial Fins
• Melting Rate: Up to 39.7 to 44.1 lbs/hr (18-20 kg/hr)
• Number of Pumps: 1 Single Pump or 1 Double Pump
• Pumping Capacity:
• Single Pump: 1, 2.5, 4, 8 cc/rev
• Double Pump: 2 x 0.93, 2 x 1.86, 2 x 3.71, 2 x 4.8 cc/rev
• Number of Hydraulic Outputs: 2 per Pump (3/4" UNF Thread)
• Number of Electrical Outputs: Up to 10 Outputs
• Motor Power: 0.250 kW
• Pump Speed: 10-80 rpm (Range 0 - 100 rpm)
• Temperature Range: 104ºF to 392ºF (40ºC to 200ºC)
• Temperature Control: RTD ± 0.9ºF (0.5ºC)
• Max. Pressure: 1,160 psi (80 bar) - Do not exceed 1,015 psi (70 bar)
• Bypass Valve: Mechanical or Pneumatic
• Maximum Power Supply:
• 1 Single Pump / 2 Outputs: 5,000 W per phase
• 1 Double Pump / 4 Outputs: 5,000 W per phase
• Electrical Requirements:
• 3N ~ 400V 50/60 Hz + PE
• 3 ~ 480V 50/60 Hz + PE

Note: This system is specifically configured for PUR adhesives. Use of PUR in non-configured systems may result in premature adhesive curing and equipment damage.

Available Configurations & Options

The Micron+ Drum 20 PUR system can be configured to support specific PUR adhesive requirements, flow control needs, and application setups.

• Melting Plate Options: Smooth or radial fin plates to optimize melt rate while maintaining controlled heat transfer for reactive PUR adhesives
• Pump Configurations: Single or double pump setups with multiple displacement options for precise PUR dispensing and flow control
• Bypass Valve Options: Mechanical or pneumatic bypass valve for consistent pressure regulation and system protection
• Heated Hose & Applicator Integration: Compatible with heated hoses and applicators designed for PUR adhesive application systems
• Control & Output Configuration: Up to 10 electrical outputs for system integration, monitoring, and expanded process control

Common Applications for PUR Reactive Hot Melt Pail Unloaders

• Automotive Manufacturing
• Product Assembly Requiring High-Strength Bonds
• Mattress Manufacturing
• Woodworking and Furniture Assembly
• Textile and Nonwoven Production
• Electronics and Component Assembly
• Specialty Packaging and Laminating