Repair Filter Plates – With Leister Welding Technology

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Success Stories16 Jul 2025
Filter plates made of thermoplastics are used across industries worldwide. When damaged, they can cause costly downtime. Leister offers an efficient solution: Repair instead of replacing – with precise hot air and extrusion welding technology from Leister.

Author: Reto Britschgi, Product Manager Plastic Fabrication, Leister Technology Switzerland

Filter Plates: Key Components for Industrial Processes

Whether in the food industry, chemical productions, mining or wastewater treatment – Filter plates play a key role by efficiently separating solids from liquids – ensuring smooth operations, process safety, and consistently high product quality.

Wherever pressure filtration is needed, filter presses equipped with high-quality plastic filter plates are used. Especially in regions with intensive industrial activity, such as North America, Europe, Southeast Asia and Latin America, the demand for robust and maintenance-friendly filter solutions is consistently high.

Robust – Yet Susceptible to Damage

Despite their resistance, filter plates made of polypropylene or similar thermoplastics are still subject to wear and tear. Chemical exposure, temperature changes or mechanical stress lead to cracks, fractures or leaks over time. A defective filter doesn't just disrupt the filtration process, but also leads to considerable costs.

Sustainable Repair Instead of Expensive Replacement

Instead of completely replacing damaged filter plates, they can be repaired permanently and precisely with our hot air welding and extrusion welding machines.  Thanks to precise temperature control, high weld seam quality, and intuitive handling, Leister devices are trusted by professionals around the world – from maintenance workshops in South Africa to sewage treatment plants in China and gravel plants in Europe.

Your Advantages with Leister at a Glance

  • Save time: Fast repair directly on site
  • Reduction of downtimes
  • Reduce costs: No expensive replacement plates or new orders
  • High weld strength for permanent repairs

 

If you don't replace filter plates right away, but repair them in a targeted manner, you save time, reduce costs – and conserve resources. With welding technology from Leister, you can rely on quality “Made in Switzerland“, which maintenance professionals worldwide rely on.

Want to Repair your Filter Plates Efficiently – and Cut Downtime and Costs?

Then talk to our team – We'll help. We support you in selecting the right welding solution for your application.