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Bubble-free Dispensing Technique

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The performance of electronic components is compromised by factors such as bubbles in the potting medium. Increasing numbers of applications – particularly in the automotive and electronics industries – therefore require completely bubble-free dispensing methods. This is where potting in a vacuum comes into focus. The widespread school of thought about this technology is that it is too complicated, too expensive and too slow. But a closer look shows that this view is incorrect. This is a mastered technology.

As for costs, the calculation basis is key, since usually the potting and vacuum method is only considered after the required potting quality cannot be achieved reliably any other way. Under total cost of ownership assessments, higher system costs no longer play a key role, since component failure would result in much higher subsequent costs. And now there are proven solutions for high production volumes and/or shorter cycle times.

In this article series, GLUDITEC will explain when potting in a vacuum is ideal for your projects and what to be aware of.

Vacuum Potting for Isolator

Safety and Functional During the production of isolators, bubbles in the potted workpiece cannot be tolerated. Since these high-voltage components must meet the highest #functional quality and #safety requirements, potting in a vacuum is increasingly...

Vacuum Potting for Stator

Perfect insulation and heat dissipation Stators built into the electric drives of e-bikes, for instance, are usually fully potted. The potting is used for optimal electrical insulation and heat dissipation solution. In addition, the coils...

Practical tip: Perfect mixing depends on the materials

Perfect mixing depends on the materials Practical tips (2) Static mixing tubes guarantee homogeneous mixing of two-component materials using a helical mixing shaft.The agitators are always adapted to the particular material to achieve optimum results...

Practical tip: For completely bubble-free potting

Material preparation is key For completely bubble-free potting results, make sure that the entire potting material preparation and feeding process is carried out in a vacuum. A high-end processing system (Inline Vacuum Potting System FAC-950)...

Potting in a vacuum – The process steps

The ideal potting process starts during development Miniaturization and increasingly more complex components with several undercuts are challenging for absolute bubble-free potting. Even horizontally positioned, wide stretched component parts can trap rising air below them...

The method of potting in a vacuum

This method works Unlike than a technical vacuum with its strong negative pressure, vacuum potting of electronic components only reduces pressure to a maximum of 1 mbar. And with good reason: Reducing the atmostpheric pressure...