When choosing to use laser cutting PET material, we usually choose to use carbon dioxide laser alignment for cutting, but what many people don’t know is that there are many different options for carbon dioxide, such as CO2 lasers in the 9.3um and 10.6um bands. So when we cut PET, what wavelength band of laser will be more suitable? The following are some reasons why our editor at Laser Laser recommends the 9.3um band laser.

■ Absorption properties:
PET material has a high absorption rate under the carbon dioxide laser in the 9.3μm band. This means that PET can effectively absorb laser energy at this wavelength, making it easier to cut.
                            
■ Small impact of moisture:

Compared with the 10.6μm band, the carbon dioxide laser in the 9.3μm band has less impact on the absorption of water molecules. Therefore, when cutting in an environment or material containing moisture, the 9.3μm laser can operate more stably and avoid affecting the cutting effect due to moisture interference.

■ Cutting effect:

Using a 9.3μm band carbon dioxide laser for PET cutting usually produces better cutting results. This wavelength can effectively penetrate PET materials and produce high-quality cutting edges, and can reduce the thermal impact on surrounding materials, reducing coking and melting of the cutting edge.


Although the 10.6μm carbon dioxide laser can also be used for PET cutting, generally speaking, the 9.3μm band is more suitable for this application because it can provide more effective cutting results and a more stable operating environment. Selecting the appropriate band also depends on specific cutting requirements and equipment availability, so it is recommended to select and test based on actual conditions.