Graco Inc.

InvisiPac Applicators for Hot Melt Adhesive  GM100 & GS35 hot melt dispense nozzles

A wide range of glue applicators for case and carton sealing

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Reduce downtime caused by plugged nozzles

The InvisiPac Hot Melt Adhesive Applicators offer you a hassle-free operation with improved uptime. They have an innovative free-flow manifold design and integrated applicator filtering which eliminates nozzle plugs. And with a compact  and custom design options, they can easily meet your application needs.


InvisiPac valve with callouts

1. Free Flow Manifold

  • Reaches operating temperature in less than 10 minutes
  • Manifold filter is included in a heated zone, eliminating coldspots and ensuring consistent adhesive application
  • Manifold filter traps debris and char so it’s removed when you replace the filter

2. Free-Flow Path

  • Designed to eliminate dead zones where char will build up

3. Integrated Module Filter

  • Design protects ball and seat from debris and char
  • Eliminates nozzle plugging when used with InvisiPac System
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GM100: Plug free applicator for high speed stitching applications

  • Features: Air open/air close
  • Cycletime: 10,000 cycles per minute
  • Life: 500 million + cycles* (lab tests over a billion)
  • Single, dual, quad and custom designs available

GS35: Plug free applicator for constant bead applications

  • Features: Air open/spring close
  • Cycletime: 3500 cycles per minute
  • Single, dual, quad and custom designs available


InvisiPac guns - pair
InvisiPac HM25c Hot Melt System
  • Works with the InvisiPac Tank-Free Hot Melt Delivery System
  • Quick start-up - ready in less than 10 minutes
  • Tank-Free design means adhesive spends less time at high temperatures - significantly reducing char
  • Less char results in less nozzle plugging, less system maintenance and more uptime


InvisiPac™ GS35 Plug-Free Hot Melt Adhesive Applicator
> 3,500 cycles/minute
> 3,500 cycles/minute
Heat up Time
< 10 minutes to 350°F at 240 VAC
< 10 minutes to 176°C at 240 VAC
Electrical Service
200-240V, 50–60 Hz, 400W
200-240V, 50–60 Hz, 400W
Maximum Working Fluid Pressure
1500 psi
10.3 MPa, 103 bar
Maximum Air Pressure
80 psi
0.5 MPa, 5.5 bar
Minimum Air Pressure
40 psi
0.3 MPa, 2.7 bar
Maximum Operating Temperature
Ambient Storage Temperature Range
Ambient Operating Temperature Range
Solenoid Air Flow Rating
1.0 Cv
1.0 Cv
Wetted Parts
Aluminum, carbon steel, stainless steel, carbide, brass, chemically resistant seals, chrome
Aluminum, carbon steel, stainless steel, carbide, brass, chemically resistant seals, chrome
Platinum 100 Ohm RTD
Platinum 100 Ohm RTD
Nickel 120 Ohm RTD
Nickel 120 Ohm RTD
Solenoid Control Voltages
24 VDC
24 VDC
110 VAC
110 VAC
Sound pressure measured 6.5 ft (2m) from gun at 80 psi (550kPa, 5.5 bar)
75.6 dB(A)
75.6 dB(A)