Understanding Laser Marking on Leather: The White Edge Phenomenon

Home >> content-19 >> Understanding Laser Marking on Leather: The White Edge Phenomenon

Understanding Laser Marking on Leather: The White Edge Phenomenon

Introduction:
The Laser marking machine has become an indispensable tool in various industries for its precision and non-contact marking capabilities. However, when it comes to marking leather, operators often encounter an issue where a white edge appears around the marked area. This article delves into the reasons behind this phenomenon and offers solutions to achieve clean and professional markings on leather.

The White Edge Phenomenon:
When a Laser marking machine is used to engrave or mark leather, the high intensity of the laser beam removes the surface layer, revealing the underlying material. In some cases, this process can cause a white or light-colored edge to form around the marked area. This is due to a few factors:

1. Laser Settings: The power and speed settings of the laser can significantly impact the marking outcome. Too much power can cause the leather to burn, leading to a white or discolored edge.

2. Leather Composition: Different types of leather have varying thicknesses and compositions. Some leathers may have a protective coating or finish that reacts differently to the laser.

3. Laser Type: Certain laser types, such as CO₂ or fiber lasers, may be more prone to causing a white edge due to their wavelength and interaction with the leather's pigments.

Solutions to Minimize White Edges:
To prevent or reduce the appearance of white edges when marking leather with a Laser marking machine, consider the following strategies:

1. Adjust Laser Settings: Experiment with lower power and higher speed settings. This can help to minimize the burning effect without compromising the depth or clarity of the mark.

2. Pre-Treatment: Some leathers may benefit from a pre-treatment process, such as wiping with a damp cloth to remove any surface treatments that could cause uneven laser interaction.

3. Test Samples: Always test the laser settings on a small, inconspicuous area or a sample piece of the same leather before marking the final product.

4. Laser Type Selection: If possible, choose a laser type that is less likely to cause discoloration. For example, UV lasers are known for their ability to mark without causing significant discoloration on a variety of materials, including leather.

5. Post-Treatment: After marking, some leathers may benefit from a post-treatment process, such as applying a leather conditioner or dye to blend the marked area with the surrounding leather.

Conclusion:
The white edge phenomenon is a common challenge when using a Laser marking machine on leather. By understanding the causes and implementing the right strategies, operators can minimize this issue and achieve high-quality, professional markings. As with any material, it's essential to have a deep understanding of the leather's properties and the capabilities of the laser system to achieve the best results.

.

.

Previous page: Can a Laser Marking Machine Engrave on Eggshells? Next page: Can a Laser Marking Machine be Controlled by a Laptop?

Enhancing Marking Precision with Vision Systems in Fiber Laser Marking Machines

Achieving Matte Textures on Jewelry with Laser Marking Machines

Advantages of Disc-Fiber Composite Pump Laser Marking Machine in High-Power Deep Engraving

Preventing Burn Marks in Wood Laser Marking

Achieving 30 mm Step Difference with 3D Galvo on a Femtosecond Laser Marking Machine

Wear Resistance Testing of Frosted Glass Bottles Marked with 10.6 µm CO₂ Laser: Setting ASTM C501 Weight Loss Criteria

Ensuring QR Code Readability in Jewelry Laser Marking

Calculating the Efficiency-Temperature Difference Relationship of TEC in Semiconductor Laser Marking Machines

Engraving RFID Antennas on Ceramic Substrates with MOPA Laser Marking Machines

Customizable Color Options for Stainless Steel Laser Marking with Laser Marking Machine

Understanding Laser Marking on Leather: The White Edge Phenomenon