Component Repair and Sustainable Production

Revolutionary Laser De-Welding

Laser Plastic De-Welding: Sustainable Plastic Welding with Laser De-Welding

Cleanly separate laser-welded plastic parts, extend product life cycles and promote sustainable production - with LPKF's pioneering technology.

Sustainability and Resource Efficiency at the Core


As the global focus on sustainability increases, so does the need for processes that promote responsible resource usage. LPKF’s innovative laser de-welding technology provides a solution to this challenge. Traditional plastic welding methods make it difficult to repair or recycle welded assemblies without damaging them. However, LPKF's laser-based approach allows welded plastic parts to be separated cleanly, enabling repair and recycling while minimizing waste.


With global regulations like the Corporate Sustainability Reporting Directive (CSRD) placing pressure on industries to meet sustainable practices, this method not only supports environmental goals but also helps businesses achieve greater operational efficiency.

How Does Laser Plastic De-Welding Work?

 

 

LPKF’s laser plastic welding technology has long been the industry standard for clean, precise, and non-destructive bonding of plastic components. With the introduction of "laser de-welding," it now offers a method for gently reheating the welded seam with precision, enabling parts to be separated along the weld without damage.
 

The laser penetrates the transparent upper component and reheats the absorbent lower part, allowing the upper component to be lifted off. This process is highly controlled, ensuring that even complex assemblies can be disassembled for repair or recycling. And if needed, the parts can be re-welded together after rework.

 


Why Choose Laser De-Welding Over Traditional Methods?

Laser de-welding offers distinct advantages over traditional methods of separating welded parts. These include:

Cost-Efficient:

Rapid amortization thanks to easy integration into the existing infrastructure with absolutely minimal space requirements.

Sustainability:

The process supports recycling and repair, contributing to a circular economy and reducing waste.

Flexibility:

Suitable for various types of plastic and component geometries. Easy integration into the existing production process possible.

Non-destructive:

Unlike mechanical separation methods such as sawing or cutting, laser de-welding does not damage the parts, making it ideal for reuse and repair.

Comparison with other methods:

  • Traditional hot gas welding creates gaps that cannot be restored after separation.

     
  • Ultrasonic, vibration, and friction welding rely on movement between parts and cannot be reversed.

     
  • Adhesivebonds are permanent and cannot be undone.

 

 

Supporting Sustainability and Circular Economy Goals

 

LPKF’s laser de-welding technology aligns with global sustainability efforts, including the United Nations’ Sustainable Development Goals (SDGs). Specifically, SDG 9 calls for sustainable infrastructure and innovation, while SDG 12 advocates for responsible consumption and production. Laser de-welding helps companies meet these objectives by promoting recyclable, repairable designs right from the outset.

This method also reduces the need for new materials, minimizing the environmental footprint of manufacturing and extending the lifespan of expensive components.

Proven Success Across Multiple Industries


LPKF's laser de-welding technology has been tested and implemented by leading industry partners, who are already seeing the benefits of this innovative process. Project manager Tobias Jaus explains:

“Encapsulating assemblies is one of the last steps in the value chain. If high-quality internal components need rework, it often results in damage – until now. With laser de-welding, components can be easily separated and reworked without harm.”

The technology has been validated through a series of tests at the LPKF technical center, with optimized tool concepts identified for reliable separation across different component geometries. Well-known companies in various industries are currently testing the method, and early feedback has been overwhelmingly positive.


Interested in sustainable plastic welding?

Our welding professionals will help you with this. With our worldwide LPKF sales and service network.

Find your local distributor

LPKF is represented internationally. Find a distributor in your immediate vicinity.
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LPKF WeldingQuipment GmbH
Alfred-Nobel-Str. 55-57
D-90765 Fürth
Phone icon+49 (0)911 669859-0
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