LPKF Clean Cut Technology

Achieve Maximum Quality and Technical Purity 

The innovative CleanCut-technology by LPKF guarantees an unprecedented edge quality where the material is 100% carbonization-free.

Causes of Carbonization

The effect of carbonization is caused by the char which is generated during the removal of the material. During laser depaneling, the laser heats the material, causing it to melt and vaporize. This 'cuts' the circuit board into smaller panels. A specific temperature threshold must not be exceeded during the process, otherwise the material will burn and release carbon. In the case of FR-4 material, for example, this limit is 350°C.

While the process of laser depaneling has improved over the years to prevent burning or harming the PCB, carbonization during laser depaneling may still occur if the incorrect laser wavelength and/or cutting parameters are used. Carbonization also occurs when the laser machines used are out-of-date or implements old laser technology. 

Cross-Section: Cutting edge of PCB shows carbonization of PCB with standard Laser Depaneling Machines

Cross-Section: Cutting edge of PCB shows carbonization-free PCB with LPKF's CleanCut Technology

Disadvantages of Carbonization

Unpleasant Smell

Visual Defects

Poor Surface Quality

The solution: LPKF's CleanCut Technology

The CleanCut Technology is an innovative process for laser cutting of printed circuit boards. The result is a previously unattained technical cleanliness of the cutting edge and a high quality product. The processed cutting is100% carbonization-free. To achieve this technical cleanliness, LPKF machines do not require an additional cleaning step which would extend the processing time.

Overall, the probability of failure of processed PCBs can be significantly reduced by the clean and dust-free cutting edges and components.

Benefits of LPKF's CleanCut Technology

No Carbonization
In contrast to the Laser Depaneling processes used by other market suppliers, LPKF's CleanCut Technology enables PCBs to be processed completely free of carbonization. Burning of the materials is prevented by using this technology.
Outstanding Cutting Edge Quality
Compared to other Laser Depaneling processes, the CleanCut Technology allows even higher quality processing of materials. The result is a technical cleanliness and precision that is second to none.

Technical cleanliness plays a decisive role in the long-term stability of printed circuit boards. As a measure of cleanliness, the surface resistance can be determined by means of a SIR test (Surface Insulation Resistance). For example, residues on the PCB, i.e. under, between or on the components can cause dendrite formation. These constantly growing crystal structures can lead to short circuits and associated malfunctions.
High Cutting Speed

The CleanCut Technology combines outstanding quality with a comparatively high processing speed. Milling work can be made with full cuts and process chains can be shortened.

Processing speeds vary depending on the laser power and wavelength used and the material to be processed. We would be pleased to advise you on the selection of the appropriate system for your specific application context.