Graco 24U021 InvisiPac GS35 Single Slim Hot Melt Applicator with 24 VDC Solenoid and Pt 100 RTD

InvisiPac 24U021 GS35 Single Slim Adhesive Dispenser Overview

For constant bead dispensing in space-constrained packaging equipment, the Graco 24U021 InvisiPac GS35 single slim hot melt applicator delivers reliable adhesive flow for case and carton sealing applications that require precise, uninterrupted dispensing. The slim, single-module design supports stable bead formation while maintaining consistent adhesive delivery. Its plug-free construction helps eliminate nozzle plugging and reduce adhesive char, improving uptime and supporting clean operation in continuous packaging environments.

The applicator is equipped with a 24 VDC solenoid valve for responsive actuation and a Pt 100 RTD for accurate temperature monitoring during production. When used with the Graco InvisiPac Tank-Free Hot Melt Delivery System, including HM10, HM25c, and HM50 models, the GS35 delivers clean, stable adhesive flow throughout the dispensing system. With a heat-up time of under 10 minutes, air-opened, spring-closed operation, and cycle speeds up to 3,500 cycles per minute, this single slim GS35 is well suited for high-speed packaging lines and compact machinery where consistent constant bead application is critical.

See additional Graco InvisiPac GS35 applicator configurations.

Slim Design Advantages of the Graco 24U021 GS35 Hot Melt Applicator

• Slim Single-Module Footprint: The narrow GS35 single-slim design fits easily into tight packaging machinery where space is limited but consistent adhesive output is required.
• Built for Constant Bead Sealing: Designed specifically for uninterrupted bead dispensing in case and carton sealing, delivering steady adhesive flow without pulsing or interruptions.
• Plug-Free InvisiPac™ Adhesive Path: A free-flow manifold with integrated filtration helps prevent nozzle plugging and reduce adhesive char, minimizing maintenance and improving uptime.
• Electrical Actuation & Temperature Feedback: Uses a 24 VDC solenoid valve for responsive operation and a Pt 100 RTD to provide accurate temperature monitoring during continuous production.
• Air-Opened, Spring-Closed Operation: Pneumatic valve action provides reliable bead cutoff and consistent performance at operating speeds up to 3,500 cycles per minute.
• Fast Heat-Up for Quick Line Starts: Reaches operating temperature in under 10 minutes, helping packaging lines restart faster after shutdowns or changeovers.

Model Specifications

• Series: InvisiPac GS35
• Model: 24U021
• Type: Hot Melt Applicator
• Style: Slim - Single
• Number of Modules: 1
• Mode of Operation: Air Opened, Spring Closed
• Speed: > 3,500 cycles/minute
• Heat-up Time: 10 minutes to 350°F (176°C) at 240 VAC
• Heater: 240 V
• Solenoid Valve Voltage Rating: 24 VDC
• RTD Type: Pt 100 RTD
• Maximum Working Fluid Pressure: 1,500 psi (10.3 MPa, 103 bar)
• Minimum Working Air Pressure: 40 psi (0.3 MPa, 2.7 bar)
• Maximum Working Air Pressure: 80 psi (0.50 MPa, 5.5 bar)
• Suitable for Wash Down/Waterwash Applications: No
• Approvals and Standards: UL 499 Listed, CSA88, CE, ISO 9001