UV laser marking machine and carbon dioxide (CO2) laser marking machine in a number of aspects of the difference between the differences, these differences are mainly reflected in the type of laser, laser wavelength, application scenarios and marking effect and so on. The following are their main differences:

Laser type
UV laser marking machine: the use of short wavelength UV laser, usually wavelength of 355nm, this laser using the third-order intracavity frequency doubling technology, can produce a very small focused spot.
Carbon dioxide laser marking machine: adopts CO2 gas laser with a laser wavelength of 10.64 μm. This laser produces a longer wavelength laser beam, which is suitable for the processing of most non-metallic materials.
Laser wavelength
UV laser marker: 355nm wavelength, belonging to the ultraviolet spectral range.
CO2 laser marker: 10.64μm wavelength, belonging to the far-infrared spectral range.
Application Scenarios
UV laser marking machine: due to its short wavelength and high energy density, it is very suitable for ultra-fine marking and engraving, especially for heat-sensitive materials such as plastics, glass and porcelain. In addition, it is also commonly used in food, pharmaceutical packaging materials marking and microporous processing and other fields.
Carbon dioxide laser marking machine: It is mainly used for marking non-metallic materials, such as paper, leather, fabric, organic glass, epoxy resin, woolen products, plastics, ceramics, crystal, jade, bamboo and wood products. It is also applicable to the processing of some metal products, but the effect is not as good as fibre laser marking machine.
Marking effect
Ultraviolet laser marking machine: due to its ‘cold light’ characteristics, the ultraviolet laser marking machine in the marking process produces very little heat, so it will not cause too much thermal impact on the material, suitable for fine processing. Marking effect is clear, high precision.
Carbon dioxide laser marking machine: the marking effect is also clear, but due to its longer laser wavelength, it may produce more thermal effects on some materials, resulting in certain changes in the material surface.
Other characteristics
UV laser marking machine: it is usually more expensive because of its relatively high technology and manufacturing costs. However, it has obvious advantages in the field of fine processing.
Carbon dioxide laser marking machine: comparatively speaking, the cost of the equipment is low, and the maintenance is simple, which is suitable for large-scale industrial production.
In summary, UV laser marking machine and carbon dioxide laser marking machine have their own unique advantages and application scenarios, the choice of which equipment should be based on the specific processing needs and material characteristics to decide!