Graco Inc.

ThermoLazer ProMelt  Thermoplastic Handliner

The world’s first fast melt, on-board handliner

Where to BuyRequest Info

Introducing the world’s first fast melt, on-board handliner – ThermoLazer ProMelt System by Graco. Now, for the first time, it’s possible to melt up to 300 pounds of thermoplastic material (6-50 lb bags) in a handliner in less than one hour! No one else can do this and we’re proud to say that this patent pending system will soon become the new industry standard for years to come.

Thermoplastic pavement marking
  • QuadMelt System - Four chamber system can melt 300 lbs of material in less than 1 hour.
  • ControlFlow System - Precise material flow control with a squeeze of a lever.
  • SplitBead Hopper - Holds over 90 lbs (40 kg) of reflective glass beads.
  • EasyGlide System - First thermoplastic line striper with dual rear wheels and Fat Track Front Swivel for smooth LineLazer-like handling.
  • SmoothRide Tires - High-load pneumatic tires provide excellent maneuverability and less rolling resistence.
  • Optional Double-Bead Drop System Kit: installs in minutes for superior retroreflectivity.

Ride-on option:

Why walk when you can ride! Attach a Graco LineDriver to the Thermolazer and:

  • Improve production
  • Reduce fatigue
  • Achieve higher line quality
  • The industry's first ride-on compatible handliner


ThermoLazer ProMelt (24H624)
Liquefied Petroleum Gas (LP-gas) (propane vapor)
Liquefied Petroleum Gas (LP-gas) (propane vapor)
Gas Supply Maximum Pressure
250 psi
17.24 bar
Operating Pressure
Kettle Burners
3 psi
0.21 bar
20 psi
1.38 bar
Screed Box Front Burners
20 psi
1.38 bar
Screed Box Rear Burners
20 psi
1.38 bar
Maximum Heating Capacity
Kettle Burners (sum of 2 burners)
(2) 100,000 Btu/hr
(2) 29.3 kW
100,000 Btu/hr
29.3 kW
Screed Box Front Burner (sum of 3 burners)
27,000 Btu/hr
7.9 kW
Screed Box Rear Burner (sum of 4 burners)
36,000 Btu/hr
263,000 Btu/hr
77.1 kW
Material Capacity
20, 30 lb
9.1, 13.6 kg
Main Kettle
300 lb — Thermoplastic traffic marking compound materials
136 kg — Thermoplastic traffic marking compound materials
Bead Hopper
90 lb — Type II glass bead
40 kg — Type II glass bead
Maximum Operating Temperature
480 °F
249 °C
Front Tire Pressure
45 psi
3.10 bar
Rear Tire Pressure
60 psi
4.14 bar
350 lb
159 kg
72 in
1.83 m
51 in
1.3 m
48 in
1.22 m
Igniter battery
AA (1.5 V)
AA (1.5 V)