
UV Laser Coding Machine for High-Precision Permanent Marking
A UV laser coding machine is designed for industrial applications that require high-resolution, permanent, and non-contact marking on delicate or heat-sensitive materials. Using ultraviolet laser technology, the system creates precise and clearly defined codes through controlled surface interaction, allowing permanent marking while minimizing thermal impact on the material.
Compared with traditional ink-based coding systems, UV laser coding operates without consumables such as ink or solvents. This results in cleaner production environments, reduced routine maintenance, and stable marking quality over long production cycles, making it well suited for integration into modern automated production lines.
What Is a UV Laser Coding Machine?
UV Laser Coding Technology
A UV laser coding machine is a laser marking system that uses ultraviolet light, typically with a short wavelength, to generate permanent codes and graphics on product surfaces. The high photon energy of UV light enables precise interaction with materials, making this technology suitable for applications that require fine marking on delicate or heat-sensitive substrates.
Cold Marking with Minimal Thermal Impact
Unlike conventional laser systems that rely mainly on thermal energy, UV laser coding works through controlled surface interaction with a very small heat-affected zone. This process, often referred to as cold marking, allows clear and stable codes to be produced while maintaining the original appearance of the material.
Designed for Industrial Coding and Traceability
In industrial environments, UV laser coding machines are used to apply date codes, batch numbers, serial numbers, barcodes, and QR codes directly onto products or packaging. The ink-free and non-contact nature of the process supports consistent marking quality and easy integration into automated production lines.
Key Advantages of UV Laser Coding Machine
Minimal Thermal Impact on the Material Surface
UV laser coding operates with a very small heat-affected zone. The marking process involves controlled surface interaction rather than bulk heating, which helps avoid melting, carbonization, or deformation. This makes UV laser coding suitable for heat-sensitive and appearance-critical materials.
High-Resolution and Precise Marking
The short wavelength of UV laser light enables a small focal spot, allowing the system to produce fine characters, sharp edges, and high-density codes. Even small text, detailed graphics, and compact QR codes remain clear and well defined.
Permanent and Consistent Marking Quality
UV laser coding creates marks that are resistant to abrasion, moisture, and routine handling. The non-contact marking process ensures consistent code quality across long production runs, supporting reliable product identification and traceability.
Ink-Free Operation and Reduced Maintenance
As a consumable-free technology, UV laser coding eliminates the need for inks, solvents, and frequent cleaning. This contributes to a cleaner production environment, reduced routine maintenance, and lower long-term operating costs.
Wide Material Compatibility
UV laser coding machines can be used on a broad range of materials, including plastics, glass, coated surfaces, films, paper-based packaging, and technical polymers. This flexibility allows one system to support multiple products and packaging formats.
Easy Integration into Automated Production Lines
Designed for industrial environments, UV laser coding machines can be integrated with conveyors, sensors, and encoders. This allows accurate code positioning and stable performance even in continuous, high-speed production.
Main Applications of UV Laser Coding Machine
Cosmetics and Personal Care Packaging
UV laser coding is widely used in the cosmetics and personal care industry for marking bottles, tubes, caps, and flexible packaging. The precise and low-thermal-impact marking process helps maintain the appearance of packaging surfaces while ensuring clear date codes, batch numbers, and traceability information.
Pharmaceutical and Medical Products
In pharmaceutical and medical applications, UV laser coding machines are used for marking blister packs, vials, ampoules, syringes, and medical components. The technology supports high legibility on small marking areas and provides permanent identification without physical contact.
Food and Beverage Packaging
UV laser coding is suitable for a variety of food and beverage packaging materials, including films, cartons, bottle caps, and labels. The non-contact marking process integrates well with continuous production lines and supports consistent coding quality at high speeds.
Electronics and Precision Components
For electronics manufacturing, UV laser coding enables fine and accurate marking on components such as PCBs, cables, connectors, and housings. The ability to produce micro-sized characters and high-density codes makes it suitable for space-limited applications.
Plastic and Flexible Packaging Materials
UV laser coding machines are commonly applied to PE, PP, PET, and other plastic materials, as well as laminated films and flexible packaging. The controlled surface interaction allows clear marking without compromising material integrity.
Glass and Coated Surfaces
Glass containers, coated bottles, and treated surfaces can be permanently marked using UV laser coding. The technology provides stable contrast and durability while maintaining the original appearance of the surface.
Main Parameters of UV Laser Coding Machine
Parameter | Standard Range / Value | Description |
Laser Wavelength | 355 nm | Ultraviolet wavelength for high-precision marking and micro-ablation |
Laser Power | 3–20 W | Determines marking speed and ability to mark on thicker coatings or denser materials |
Marking Speed | 100–1,000 mm/s | Adjustable to match production line throughput; ensures consistent and accurate marking |
Marking Area | 50×50 mm to 100×100 mm (or custom) | Defines the maximum field the laser can cover in a single pass |
Minimum Character Size | 0.2–0.3 mm | Supports high-density codes, micro text, and detailed graphics |
Line Resolution | 1,000–2,000 dpi | Controls sharpness and clarity of marked codes or logos |
Repeatability | ±0.01 mm | Ensures consistent marking across large batches |
Cooling Method | Water cooling | Maintains laser stability and prolongs service life |
Control Software | Windows-based, user-friendly | Supports text, date codes, batch numbers, barcodes, QR codes, logos |
Communication Interface | USB / Ethernet / I/O | Allows integration with conveyors, sensors, and production line control |
Power Supply | Customization | Standard industrial supply, stable operation |
Operating Environment | 15–35°C, 20–80% RH | Avoids condensation and ensures laser stability |
Machine Dimensions | Depends on model | Compact design for easy installation on automated lines |
Weight | Depends on model | Varies with laser power and scanning system |
Main Details of UV Laser Coding Machine



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