UV Laser Marking Machine

UV laser printers offer precise, high-contrast markings that are resistant to fading, making them perfect for industries where traceability and safety are critical. These printers are widely used by pharmaceutical, medical, and cosmetics manufacturers to ensure that codes remain readable throughout the product’s lifecycle—from production and packaging to distribution and end-use. Their ability to create fine, detailed marks on delicate materials without causing damage helps meet strict regulatory standards while maintaining product integrity.

Product Information Overview

Precision UV Laser Marking for High-Quality Metal Surfaces

UV laser marking machines deliver exceptional precision and clarity when marking on metal surfaces, making them ideal for industries that require high-quality, detailed identification. These systems use a short-wavelength ultraviolet laser that allows for fine, damage-free marking even on heat-sensitive or coated metals. The result is crisp, clean codes, logos, and text that are highly readable and long-lasting.

PRODUCT OVERVIEW

The ultraviolet (UV) laser operates at a wavelength that is one-third of the standard laser wavelength (1064 nm), placing it in the UV spectrum. This type of laser is commonly referred to as a “UV laser printer.” It’s also known as a THG (Third Harmonic Generation) laser because it is created by converting a fundamental 1064 nm wavelength to 532 nm using a nonlinear crystal and then further converting it to 355 nm with another crystal. Due to the high absorption rate of UV light by most materials and the fact that it processes without generating significant heat, this method is known as “cold marking.”

The laser’s wavelength plays a significant role in determining the size of the laser spot. Since the UV wavelength (355 nm) is much shorter than the fundamental wavelength, the laser can focus more tightly on smaller areas. This allows for exact marking, even in compact or detailed sections of a product, making UV lasers ideal for applications requiring fine detail without causing heat damage.

The shorter wavelength also leads to a smaller laser spot diameter, enabling ultra-precise marking in small or detailed areas. This makes UV laser systems perfect for industries that require microscopic text, logos, or serial numbers in confined spaces, such as electronics, medical tools, cosmetics packaging, and microchip labelling. The ability to create clean, sharp, and permanent marks without physical contact or heat stress ensures exceptional quality and durability, even on the most delicate components.

Product Advantages

Industry trend

Manufacturers of PET packaging are increasingly turning to "thin-walled" PET materials to cut down on production costs and reduce environmental waste. However, this thinner material poses a challenge for traditional laser marking, as it's more prone to burning or distortion. UV laser printers offer a reliable solution by delivering precise, low-heat marking that avoids damaging the delicate surface while still achieving clear and accurate results.

At the same time, stricter regulations around pharmaceutical packaging and labelling have prompted many companies to move away from ink-based systems and adopt laser marking technologies for better compliance, traceability, and product integrity.

High-density polyethene (HDPE) bottles remain a top choice for packaging pharmaceutical products, as they are durable and reliable. These bottles require clear, permanent labelling to ensure adequate product tracking. UV laser printers excel in this area, creating dark, high-resolution codes on the light-coloured surface of HDPE bottles. The result is legible, long-lasting markings that meet industry standards and remain visible throughout the product's lifecycle.

Minimizes thermal impact

Photolysis treatment inhibits damage

UV lasers emit high-energy photons capable of directly breaking molecular bonds. This allows marking and processing to be done without generating surface heat, effectively minimizing material damage and ensuring high-precision results.

Photolysis treatment inhibits damage

It also offers excellent absorption for highly reflective materials like gold, silver, and copper, without causing excess heat buildup. This minimizes the formation of soot and burrs, preserves the original surface quality, and enables precise marking and processing with strong resistance to corrosion.

Photolysis treatment inhibits damage

As electronic components get smaller each year, the plastic used to cover them is also getting thinner. Using a regular laser (1064nm) might go through this thin cover and damage the parts inside. However, using a UV laser (355nm) is a better choice because it is absorbed more easily by the surface, so it doesn’t go deep and helps protect the inside from harm.

Product Applications

CO₂ lasers are gas-based systems that use carbon dioxide as the active medium, making them ideal for delivering clear, consistent, and high-quality markings on a wide range of materials such as cardboard, glass, coated metals, paper labels, PET, acrylic, and other plastics. Renowned for their adaptability and accuracy., these lasers produce permanent, high-contrast marks without any physical contact, preserving the integrity of even delicate materials.

They operate at high speeds, which boosts productivity in demanding industrial environments, and their low maintenance requirements ensure long-term reliability. CO₂ lasers are also an environmentally friendly solution, using no inks or solvents and generating minimal waste. With customizable wavelengths and flexible installation options, they can be easily adapted to suit specific materials and production line configurations, making them a valuable tool for manufacturers seeking efficient, cost-effective, and eco-conscious marking solutions.

list of items

Each CO₂ laser printer is delivered as a complete package, including all the essential components needed for smooth installation and operation. Standard items include the laser marking unit for precise and permanent coding, an electric control box to manage the laser system’s performance, and a high-precision encoder that ensures accurate marking based on the speed and movement of the production line. A photoelectric sensor is included to detect product presence, allowing for automatic triggering of the laser at the right time.

An all-in-one touchscreen interface makes the system easy to operate, providing a user-friendly way to adjust settings, monitor performance, and manage marking jobs. A sturdy lifting bracket supports flexible mounting, allowing the printer to be easily positioned according to the height and layout of your production line. The package also includes all necessary wiring and comprehensive manuals for setup and troubleshooting.

Technical Specifications

Category	Specification
Laser Type	Q-switched pulsed lasers
Max Output Power	3W / 5W / 10W
Laser Wavelength	355nm
Laser Lifetime (avg)	15,000 hours
Laser Class	Class 4 (IEC60825-1 compliant)
Max Linear Speed	20 m/s
Marking Speed	Up to 30 characters/sec
Coding Angle	Downward (90°) or flat (0°)
Marking Area	70x70mm, 100x100mm, 140x140mm, 200x200mm
Vibrometer	8mm / 10mm
Beam Expanders	2–10x (6x standard)
Spot Size	20μm
Marking Distance	255–265mm
Touch Interface	Built-in 10" Win10 touch screen
Communication Ports	Ethernet RJ45, RS232, RS485, USB, SD card
Voltage	200–240V, 50/60Hz
Power Consumption	300W
Ingress Protection	IP54 (standard), IP65 (optional)
Operating Temp	5–45°C
Humidity Range	Max 80% RH (non-condensing)
Cooling Method	Water cooling
Weights	Optical path: 21.3kg, Power: 8.4kg, Water tank: 29.5kg

Why Choose Our Laser Marking Solutions?

1. What is a UV laser marking machine?

A UV laser marking machine uses ultraviolet light (typically 355nm wavelength) to mark materials. It provides high-precision, low-heat marking, making it ideal for delicate and heat-sensitive materials.

2. What materials can a UV laser mark?

UV lasers can mark a wide range of materials including plastics (like PET, PVC, HDPE), glass, ceramics, silicon wafers, sapphire, metals (especially gold, silver, copper), and coated packaging materials.

3. Why is UV laser called a “cold marking” method?

Because UV lasers use short wavelengths and do not generate much heat, they don’t burn or melt the surface. This allows for damage-free, high-quality marking—perfect for sensitive components.

4. What industries use UV laser marking machines?

They are widely used in the electronics, medical devices, pharmaceuticals, cosmetics, food packaging, and semiconductor industries where high precision and non-destructive marking is essential.

5. What’s the advantage of UV lasers over fiber or CO₂ lasers?

UV lasers offer ultra-fine marking with minimal thermal impact. Unlike fiber or CO₂ lasers, they can mark very small components and reflective materials without causing burns, burrs, or cracks.

6. Is UV laser safe to use?

UV lasers are Class 4 laser products and require safety measures such as protective enclosures, goggles, and proper ventilation. However, when used correctly, they are safe and reliable.

7. Can UV lasers mark on transparent or light-colored materials?

Yes! UV lasers are excellent for marking transparent, light, or high-reflectivity materials like clear plastics and white HDPE bottles, producing sharp and visible results.

8. How long is the lifespan of a UV laser machine?

Typically, UV laser sources have a lifespan of around 15,000 hours, depending on usage. They require some maintenance, especially water-cooled models.