UV Laser Marking Machines
355 nm “cold” marking for plastics, films, glass and heat-sensitive components.
Also called cold laser markers, 355 nm laser coders and ultraviolet laser engravers.
What these machines do
UV lasers work at 355 nm. At that wavelength most polymers absorb the light in a very thin surface layer, so the mark is formed by a photochemical colour change rather than by heat. There is almost no burning, raised edge or damage to barrier layers.
An infrared beam is frequency-tripled inside the laser cavity to produce ultraviolet light, then delivered through a galvo scan head. The small spot size gives very fine characters and dense 2D codes. Because the heat-affected zone is minimal, UV is the usual choice for white HDPE, flexible film, medical tubing, cable jackets, glass and chip packages.
Typical options
- Motorised Z-axis with autofocus
- XY gantry for tray and batch marking
- Coaxial camera for mark-on-target alignment
- Chiller for higher-power water-cooled sources
Used in
Works on
UV Laser Marking at work
A closer look at a typical installation. Ask us for a live demonstration on your own product.
UV Laser Marking Machines
3 W UV Laser Coder
Entry UV coder for plastics, films and labels at moderate speeds.
5 W UV Laser Coder
The all-round UV coder for pharma, cosmetics and electronics.
10 W High-Speed UV Laser Coder
High-speed UV coding for film, closures and extrusion lines.
15 W UV Laser Coder for Film & Extrusion
Maximum throughput for wide webs and multi-lane lines.
Desktop UV Laser Marking Workstation
Enclosed UV workstation for precision parts and small batches.
Large-Format UV Batch Marking System
Gantry UV laser that marks full trays of parts in one cycle.
Models at a glance
| Model | Machine | Laser source | Average power | Wavelength | Marking field |
|---|---|---|---|---|---|
| UV-3 | 3 W UV Laser Coder | DPSS UV, frequency-tripled | 3 W | 355 nm | 110 × 110 mm |
| UV-5 | 5 W UV Laser Coder | DPSS UV, frequency-tripled | 5 W | 355 nm | 110 × 110 mm (optional 175 × 175 mm) |
| UV-10 | 10 W High-Speed UV Laser Coder | DPSS UV, frequency-tripled | 10 W | 355 nm | 110 × 110 mm (optional 220 × 220 mm) |
| UV-15 | 15 W UV Laser Coder for Film & Extrusion | DPSS UV, frequency-tripled | 15 W | 355 nm | 175 × 175 mm (optional 300 × 300 mm) |
| UV-D5 | Desktop UV Laser Marking Workstation | DPSS UV, frequency-tripled (3 / 5 / 10 W) | 5 W standard | 355 nm | 110 × 110 mm |
| UV-XY5 | Large-Format UV Batch Marking System | DPSS UV, frequency-tripled | 5 W (10 W optional) | 355 nm | 600 × 400 mm travel, 110 × 110 mm field |
Typical configurations. Final values are confirmed in your quotation.
Process sequence
Position
Product is presented on the conveyor, in a tray or on a fixture.
Focus
A fixed or motorised Z-axis sets the focal distance for the part height.
Mark
The 355 nm beam changes the surface colour without cutting into it.
Extract
Light fume extraction keeps the lens and product clean.
Inspect
An optional vision system grades the code before the part moves on.
Common questions
Why choose UV over fiber for plastics?
Can UV lasers mark flexible packaging film?
How much power do I need?
Tell us about your product
Send a sample, a drawing or just a description. We will recommend the right machine and show you the result.