A Comprehensive Guide to UV Laser Marking Machines

UV laser marking machines have advanced rapidly in recent years, enabling incredible personalized engraving projects on materials like plastic, acrylic, glass, crystal, metal, wood, and paper. With precision laser engravers like the STJ-3KC from Hymson …

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UV laser marking machines have advanced rapidly in recent years, enabling incredible personalized engraving projects on materials like plastic, acrylic, glass, crystal, metal, wood, and paper. With precision laser engravers like the STJ-3KC from Hymson Laser, you can even etch complex 3D graphics onto the subsurface of crystals.

With so many options to choose from, selecting the right UV laser marking machine can be an overwhelming task. This comprehensive guide will walk you through everything you need to know before investing in one of these versatile machines.

What is a UV laser marking machine?

A UV laser marking machine utilizes a 355nm ultraviolet laser wavelength to create fine and detailed engravings. Compared to infrared lasers, UV lasers use three-stage intracavity frequency doubling technology to achieve an exceptionally small focus spot. This minimizes mechanical deformation and heat damage during material processing.

Key features:

  • High repetition rate
  • Fine etching and engraving of plastics, silicon, ceramic, glass, wood, metal, and paper
  • High-speed capabilities
  • Reduced risk of micro fractures in ceramics and glass

UV laser marking involves a “cold engraving” or “photoetching” process where high-energy photons break the chemical bonds in materials, causing non-thermal destruction. This prevents heating or deformation around the engraved area.

How does a UV laser marking machine work?

A UV laser marking machine directs a precision laser beam to imprint permanent marks onto various materials. The marks are formed by:

  • Evaporating surface material to expose the deeper material layers
  • Inducing chemical and physical changes through light-energy interactions
  • Removing partial material layers to display required patterns or text

Key Applications

With exceptional beam quality and ultra-fine capabilities, UV laser marking machines are ideal for:

  • High-precision marking of electronics, plastics, leather, and wood
  • Fine and clear marking of packaging (cosmetics, pharmaceuticals, food, polymers)
  • High-speed glass cutting
  • Complex silicon wafer dicing

Additionally, these machines can:

  • Mark or dice flexible PCB boards
  • Process micro-holes in silicon wafers
  • Mark LCD glass with 2D codes
  • Etch glassware surfaces
  • Mark metal coatings
  • Mark plastic components, electronics, gifts, communication devices, building materials, and more

Suitable Materials

UV laser engravers from Hymson Laser are available in different power variants to meet diverse etching needs. These machines can mark, etch, and engrave:

  • Plastics: ABS, PA, PE, PP, PS, PC, PLA, PVC, POM, and PMMA
  • Metals: Titanium, Gold, Silver, Stainless Steel, Chrome, Platinum, aluminum, and brass
  • Wood: Plywood, MDF, Fibreboard, Walnut, Ash, Oak, Birch, Mahogany, Cherry, Maple, Pine, Larch, Cedar, Spruce, Fir
  • Other: Garments, Leather, Glass, Crystal, Paperboard, Cardboard

Key Specifications

Parameter Description
Brand Hymson Laser
Laser Type Ultraviolet
Laser Power 3W, 5W
Wavelength 355 nm
Materials Plastics, Metals, Wood, Glass, Paper, and leather
Price Range $5,400 – $22,000

Benefits of UV Laser Marking

Compared to traditional lasers, UV laser marking machines offer:

  • Smaller spot size: Enables ultra-fine marking with minimal heat damage
  • Lower power use: More energy efficient
  • Higher precision: Flawless and repeatable results
  • Non-contact processing: Permanent marks
  • Minimal heat-affected zone: Prevents material burning or deformation
  • High efficiency: Faster speeds improve production throughput
  • Stable performance: Compact footprint with low power needs
  • Thermal sensitivity: Better suited for heat-responsive materials
  • Production line integration: Automatic loading and unloading
  • Versatility: Suitable for most metal and non-metal materials

Purchasing Considerations


UV laser engravers range from $5,400 for hobby models up to $20,000 for industrial systems. Prices increase with:

  • Higher laser power
  • Larger processing area
  • Faster marking speeds

Additional costs like shipping and taxes may apply.

Care and Maintenance

To sustain performance, ensure:

  • Frequent cleaning of the working environment
  • Stable room temperatures between 16 and 28°C
  • Protection from heavy vibration
  • Use of pure or distilled water for cooling
  • Proper grounding and installation
  • Routine cleaning with non-corrosive agents
  • Careful handling of fragile components
  • Sufficient warm-up/cool-down times
  • Proper load balancing on casters
  • Unobstructed heat dissipation


With precision etching capabilities across diverse materials, UV laser marking machines enable stunning engraving outcomes unmatched by traditional methods. By understanding the technology, processes, and purchasing considerations covered in this guide, you can make the right choice based on your needs and unlock new project possibilities with these advanced systems.

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