Optimisation of laser cutting parameters for multilayer film

What was the challenge or problem to solve?

INFINITIA’s materials team faced a challenge in the field of laser cutting. The project required the optimisation of laser parameters for cutting multilayer films.

Optimisation of laser cutting parameters for multilayer film
The main challenge was that this was a complex material due to its composition of multiple layers of different materials and reduced thicknesses. The customer required a precise and efficient laser cutting process as an alternative to conventional methods, without causing damage to the films.

Optimisation of laser cutting parameters for multilayer film
How was it addressed or what was the solution?

Initially, an extensive literature search was carried out to understand the fundamentals of laser cutting on multilayer materials. This step was crucial to establish a solid foundation on the processes involved and the existing technologies.

Subsequently, the INFINITIA team proceeded to optimise the laser parameters, using an ultra-short pulse (femtosecond) laser. This advanced technology was essential to achieve precise cutting of the films without causing melting or damage to the inner layers.

To validate and refine the process, a detailed topographical study of the slices was carried out. Using optical microscopes and SEM (Scanning Electron Microscopy), the cut samples were examined, allowing an in-depth understanding of the interaction of the laser with the different materials and layers.

With this information, the laser parameters were iterated and rectified. This fine-tuning process ensured that the laser performed optimally according to the specific characteristics of each material.

Finally, a rigorous check was carried out to ensure that the cut parts were not damaged by the laser. The customer validated the correct operation in production with the selected parameters, thus confirming the success of the project.

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