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Electronic Potting: Why Chemistry and Machine Must Work Together

Electronics manufacturers know the problem: High-viscosity potting compounds often cannot be processed bubble-free on standard casting machines. Air inclusions in the component lead to expensive rework or scrap. But the problem rarely lies with just the machine or just the material - it lies in the lack of coordination between both.

Electronic Potting: Why Chemistry and Machine Must Work Together
Technical Article March 25, 2026

Electronics manufacturers know the problem: High-viscosity potting compounds often cannot be processed bubble-free on standard casting machines. Air inclusions in the component lead to expensive rework or scrap. But the problem rarely lies with just the machine or just the material - it lies in the lack of coordination between both.

The Problem: Air Inclusions in High-Viscosity Electronic Potting

Processing polyurethane systems tolerates no errors. Temperature fluctuations, inaccurate dosing or wear from abrasive fillers quickly lead to expensive scrap. Particularly critical is electronic potting with high-viscosity compact systems - standard machines regularly fail here due to air inclusions in the component.

The BKT Solution: PU System, Vacuum Degassing and Machine Simultaneously Coordinated

BKT not only delivers the casting machine but simultaneously adjusts the vacuum degassing of the system and the surface tension of the PU compact system. The low-pressure casting machines are specifically optimised for difficult media: wear-protected pumps and mixing heads for abrasive fillers, integrated stirrers and precise temperature control up to 60 degrees C for constant mixing ratio, continuously adjustable output up to 6 kg/min and high-precision gear pumps for exact dosing with every shot.

The Result: 100% Bubble-Free Components from Day One

Through the synergy of chemical expertise and casting-machine know-how, components with the highest structural homogeneity are produced. The Siemens S7 control enables comprehensive process data acquisition for quality assurance, and via integrated remote maintenance, BKT provides worldwide real-time support - without travel time.

Why "Everything from a Single Source" Is Decisive in Potting

Those who coordinate three suppliers for system, machine and process know-how multiply their interfaces and sources of error. At BKT, electronics manufacturers receive the PU system, the matching casting machine and the application know-how from a single source. This minimizes coordination effort and ensures a reliable process - process reliability "Made in Germany".

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