How to reduce the size of the melt edge when laser die cutting film

When laser die-cutting thin film materials, the melted edge will affect the cutting quality and accuracy. Here are some effective ways to reduce the size of the melted edge:

1. Optimize laser parameters

- Reduce laser power: reduce heat input to avoid excessive melting of material.

-Increase cutting speed: reduce the laser's dwell time on the material to reduce heat accumulation.

-Adjust pulse mode: use high frequency, short pulses to reduce the heat affected zone.

2. Improve the optical system

-Use high-quality focusing lens: smaller and more concentrated light spot improves cutting accuracy.

-Optimize focus: Make sure the laser is focused on the material surface or slightly below to reduce thermal effects on surrounding areas.

3.Material and process optimization

-Choose suitable film materials: choose materials with low laser absorption or high thermal conductivity.

-Pretreat materials: improve the laser absorption characteristics of materials and reduce heat accumulation.

4. Multiple light cuts

-Layer by layer cutting: Use the method of multiple light cutting to reduce the heat input of each cutting, cut the material layer by layer, and reduce the melting edge.

5.Precise control and monitoring

-Real-time monitoring: Use the monitoring system to adjust laser parameters during the cutting process to ensure the best cutting effect.

-Automated control: Use the automated system to precisely adjust laser power, cutting speed and auxiliary gas flow.

Implementation Plan

1.Preliminary settings: Reduce the laser power to the lowest level that can cut through the film and set a medium cutting speed.

2.Gradually adjust: Increase the cutting speed, observe the effect, and find the best speed when the melt edge is the smallest.

3.Focus adjustment: Adjust the focal length so that the laser focus is on the surface of the material or slightly below.

4. Real-time monitoring: The laser parameters can be adjusted in real time during the cutting process through the monitoring system.

Through these methods, the melting edge during laser die-cutting of thin films can be effectively reduced, and the cutting quality and accuracy can be improved.