UV laser marking machines are known as "cold lasers" due to their cold processing and ultra-high precision. They can be used on a wide range of materials, particularly areas where traditional fiber lasers struggle.
The following is a breakdown of materials that can be marked by UV laser marking machines, along with a detailed description:
Core Principle: What makes UV lasers so special?
UV lasers have a short wavelength (typically 355nm) and high photon energy. They break the chemical bonds of materials directly through photochemical processes, rather than thermal effects, causing them to "carbonize" or "gasify," thus achieving high-quality marking results. Their characteristics are:
Almost no heat impact: No burning, edge melting, or deformation.
Ultra-high precision: Extremely high beam quality enables the creation of extremely fine patterns, text, and QR codes.
Wide range of applications: Capable of processing many heat-sensitive materials.
Detailed list of markable materials
1. Plastics and polymers
This is the greatest advantage of UV lasers, particularly suitable for high-value-added precision plastic parts. ABS
PC (Polycarbonate)
PE (Polyethylene)
PP (Polypropylene)
PVC (Polyvinyl Chloride)
PET (commonly used in beverage bottles and packaging)
PTFE (Teflon)
Nylon
Epoxy Resin (commonly used in circuit boards)
Marking Effect: White, dark marking, or shallow engraving. Ideal for marking logos and serial numbers on electronic components and medical device housings.
2. Glass and Ceramics
Various glasses (mobile phone cover glass, glass bottles, optical lenses)
Ceramics (electronic ceramic substrates, ceramic housings, decorative ceramics)
Marking Effect: Micro-cracks or delamination on the surface, resulting in a fine matte white or transparent pattern without causing glass breakage.
3. Metal Materials
While fiber lasers are more commonly used for deep metal engraving, UV lasers are primarily used for "fine" and "surface treatment" on metals. Aluminum alloy (excellent marking on anodized layers, capable of producing a variety of colors)
Stainless steel (capable of producing black and white markings without thermal deformation)
Electroplated metals
Precious metals (fine patterns on gold and silver jewelry)
Marking results: Primarily used for high-contrast marking of surface oxide layers and coatings, or ultra-fine shallow engraving.
4. Semiconductors and electronic materials
This is a core application scenario for UV lasers and is indispensable.
Silicon wafers (chip marking)
PCB circuit boards (green ink removal, QR code marking)
LCD screen glass
Electronic components (resistors, capacitors, micron-level coding on chips)
Marking results: Extremely fine, without damaging the delicate internal structures of electronic materials. 5. Other Materials
Leather (fine engraving, no burning smell)
Wood (dark marking on light-colored wood, no carbonization)
Paper (anti-counterfeiting marking)
Paint coating (removes the top layer of paint to reveal the underlying color)
Marking Effect and Application Comparison Table
Material Type Marking Effect Typical Application Advantages
Plastics/Polymers High-contrast white/black marking, no fused edges Medical devices, electronic housings, packaging, chips Cold working, no thermal damage, clear marking
Glass/Ceramics Matte white, fine cracks, delamination Mobile phone glass, wine bottles, ceramic components No breakage, high precision, beautiful appearance
Metals Color/black oxide marking, shallow engraving Hardware tools, jewelry, anodized aluminum No thermal stress, fine marking, no deformation
Semiconductors/PCBs Micron-level coding, removal of surface material Chips, wafers, circuit boards Ultra-high precision, cold working without wafer damage
Other Materials Shallow engraving, color change Leather gifts, wooden nameplates No burning, no carbonization, environmentally friendly
Summary: When should you choose a UV laser marking machine? You should prioritize UV laser marking machines if your product meets one or more of the following conditions:
The material is heat-sensitive: Conventional lasers can cause melting, deformation, or burning.
You require extremely high precision: You need to mark extremely fine lines, tiny QR codes, or complex graphics (<0.1mm).
You need high-quality contrast: You require a very clear, clean white mark on materials like plastic.
Your product has high added value: Products like chips, medical devices, high-end cosmetics packaging, and consumer electronics require stringent marking quality.
On the other hand, if your product is a large metal part that requires deep engraving or cutting, a fiber laser machine is a more economical and efficient option.
