Impregnation methods


Clean and effective

The trickle impregnation method offers numerous advantages: lowest resin consumption at a high filling level, a clean, automatic process without dripping and post-cleaning of the components, which is completely monitored, and perfect resin distribution even in narrow areas in the windings. Since trickling is technically complex, it takes a lot of experience and process knowledge to turn a laboratory system into a high-volume machine with a cycle time of less than 120 seconds per component and an availability of more than 95 percent.

Impregnating a stator with the trickle process requires precision and know-how.

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During the impregnation process, the stators or rotors are automatically applied to rotating tool holders and heated. In order to be able to trace the amount of resin applied at any time, the dead weight of each component is determined. The resin is then applied in a specific quantity, both internally and externally, and distributed throughout the coils. The treated components, which constantly rotate around their own axis, are then placed in an oven for curing. This produces a solid gel, which is why this process is also called "gelling". Due to the permanent rotation and sophisticated thermal management, rework is avoided.

Some advantages of the impregnation method trickling are the following points:

  • Highest quality thanks to precise impregnation
  • No time-consuming rework necessary
  • The grooves are filled to the maximum in the windings
  • Minimal process handling
  • Maximum productivity
  • Resins can be used with or without monomers

Trickling is the most effective method of impregnating electric motor stators and rotors.

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Benefit from our expertise and many years of experience. Develop the optimum process for your requirements together with us. We are specialists for different applications and processes.