Graco InvisiPac HM50 High-Volume Tank-Free Hot Melt System - Configurable

InvisiPac HM50 Tank-Free Hot Melt System for High-Volume Packaging

Built for high-output packaging lines, the Graco InvisiPac HM50 is a tank-free hot melt system engineered to support continuous, high-volume production where downtime and adhesive inconsistency are not acceptable. With a 50 lb/hr (22 kg/hr) melt rate, the HM50 is designed to keep pace with high-speed case and carton sealing operations without compromising adhesive performance.

The HM50 uses Tank-Free™ melt-on-demand technology combined with a first-in, first-out (FIFO) melt process to maintain adhesive integrity during extended run times. By delivering hot melt only as required, the system helps reduce adhesive degradation and maintenance associated with char and plugging. Integrated controls, automated feed options, and compatibility with plug-free applicators allow the HM50 to operate efficiently at scale, while a startup time of approximately 10 minutes supports faster recovery in demanding production environments.

High-Volume HM50 Hot Melt Glue System Performance Benefits

• Maximum High-Volume Throughput: Delivers up to 50 lb/hr (22 kg/hr) of hot melt adhesive to support continuous, high-speed case and carton sealing operations.
• Tank-Free™ Melt-On-Demand Technology: Supplies adhesive only as required to help reduce waste and minimize adhesive degradation common in traditional hot melt systems with heated tanks.
• Stable Adhesive Performance During Long Runs: Uses a first-in, first-out (FIFO) melt process to maintain consistent adhesive temperature and viscosity during extended production cycles.
• Fast Startup for High-Demand Environments: Reaches operating temperature in approximately 10 minutes, helping high-volume packaging lines recover quickly and maintain productivity.
• Plug-Free Applicator Compatibility: Designed to operate with InvisiPac Plug-Free™ applicators, helping reduce nozzle plugging and unplanned downtime in high-speed applications.
• Automated Feed and System Integration Options: Supports integrated automatic feed systems and system-level controls to reduce manual handling and support continuous operation.
• Designed for Uptime and Operator Safety at Scale: Eliminates traditional heated tanks and limits operator exposure to heated components, supporting safer operation in high-volume packaging environments.

Specifications

• Model: InvisiPac HM50
• Melt Rate: 50 lb/hr (22 kg/hr)
• Startup Time: Approximately 10 minutes
• Channels: 2 to 6 - optimized for high-flow, high-speed applications
• Pellet Feed Container: External bin
• Pellet Delivery Method: Venturi feed hose
• Melt Technology: Tank-Free™ hot melt
• Pattern Controller: Internal on select models or available as a stand-alone accessory
• Box Controller: Standard feature
• Voltage Options:
  • 200–240 V
  • 335–400 V
  • 350–415 V
  • 400–480 V

Applications

The InvisiPac HM50 is designed for high-volume, high-speed hot melt packaging applications, including:

• High-volume end-of-line packaging operations
• Carton sealing
• Case sealing

Alternative InvisiPac Hot Melt Systems

• InvisiPac HM10 – Low-flow tankless hot melt system for compact lines and small-package applications.
• InvisiPac HM25c – Tankless hot melt system for mid-volume end-of-line packaging operations requiring multiple dispense points.