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Materials guide

Cutting, engraving and marking leather with a laser

A laser may be considered for cutting a leather piece, engraving a design or creating a surface mark. However, feasibility depends on the exact leather, its finishes and the equipment. The material must be identified and its compatibility checked before any test.

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Cutting, engraving or marking: specify the desired result

Cutting passes through the material to create a contour or opening. To prepare your project with NWS LASER, have the process and equipment qualified based on the exact leather reference and desired result. Feasibility cannot be assumed for all leathers or all machines.

Engraving removes material to create a recessed design. Marking is intended instead to make a visible change to the surface, for example for a logo or reference. On leather, the contrast and appearance must be validated on the actual finish used; uniform darkening cannot be promised.

Switching from one process to another is not simply a matter of reducing power. Validation must take account of thickness, composition and machine configuration, in accordance with the manufacturer’s instructions. No settings recipe is transferable to all leathers.

Identify the tanning, coatings and layers

Natural leather is a hide processed by tanning. To prepare a laser application, ask the supplier for the exact reference, type of tanning and information on dyes, finishes, adhesives and any substrates. For imitation leather, also identify the polymer and multilayer structure: its appearance alone is not enough to determine its composition.

Do not laser-process leather or imitation leather containing PVC, other halogenated components or chromium VI. Chrome-tanned leathers require a specific chemical risk assessment; a declared absence of chromium VI is not enough to authorize a test. The term “chrome-tanned” does not, by itself, specify the chemical form present; it calls for documentary verification, not an improvised conclusion. Vegetable tanning is also not automatic validation of every finish.

Gather the technical data sheet and, when available, the safety data sheet, or SDS, for the components and finishing products. An SDS does not constitute authorization for laser processing. If the composition remains unknown or a component is excluded by the equipment manufacturer, do not run a test to try to determine compatibility.

Validate a representative sample

To prepare your project qualification with NWS LASER, do not assume that all leathers produce the same result. After documentary verification, use a scrap from the same batch, with the same thickness and finishes as the future parts. Define the acceptance criteria before testing.

  • For cutting: check through-cutting, geometry and edge condition, including signs of charring.
  • For engraving: examine the relief, legibility and any deformation.
  • For marking: check contrast and design legibility on the actual leather color.
  • After processing: check the appearance and durability of the part in its intended use, then revalidate if the material changes.

Plan for fume extraction and fire risk

For handheld laser welding, stripping and cutting equipment, INRS notes that emissions depend on the materials and coatings and that ignition risks exist. Its findings on stripping paint from steel do not describe emissions from leather; they should not be extrapolated to this application.

For your leather workstation, have emissions assessed and provide suitable extraction and treatment. Follow the manufacturer’s fire monitoring and prevention instructions. Keep guards and interlocks active. Extraction does not make a prohibited material compatible. For cleaning, follow the leather supplier’s instructions; no universal solvent is recommended.

Prepare your inquiry to NWS Laser

Transmettez la référence matière, sa documentation, l’épaisseur, les dimensions, le motif et le résultat attendu. Précisez la cadence et les contraintes de captage de votre atelier. Contact : info@nwslaser.fr ou +33 4 81 68 04 04. L’orientation technique reste à confirmer pour votre application.

Frequently asked questions

Can all imitation leathers be laser-processed?
No. Their composition must be known. Do not laser-process imitation leathers that contain PVC, other halogenated components or chromium VI. The presence of chromium requires a specific chemical risk assessment. A supplier’s statement that one imitation leather is compatible does not validate other references.
Does natural leather guarantee a good result?
No. Appearance depends on the exact leather and its finishes. Contrast, edges and any deformation must be examined on a representative sample after the composition has been checked.
Can the same settings be reused for a new batch?
Do not consider the new batch validated in advance. Check its reference, finishes and acceptance criteria with the relevant machine, in accordance with the manufacturer’s instructions.

Sources and documentation

NWS LASER

Your context, before the solution.

Specify the material, model or need, operating constraints and available documentation. The NWS Laser team will help you identify the next useful step.

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