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Peter Fischer, Marketing Director, Sonderhoff Holding GmbH.
Peter Fischer, Marketing Director, Sonderhoff Holding GmbH.
Photo: 123

The E-mobility revolution represents new opportunities to many technology providers including Sonderhoff, the solution supplier for polymer sealing and potting systems.

At Fakuma, Peter Fischer, Marketing Director, Sonderhoff Holding GmbH said: “The battery housing of electric vehicle is of course an application for our technology. We have already made some solutions for several OEMs.”

Sonderhoff was acquired by Henkel last year. Europe is the company’s largest market now. Meanwhile, according to Peter Fischer, the company is also focusing in Asian market.

“Sonderhoff has been in China since 2009 with its own company in Suzhou, and has achieved good growth. Thanks to the big support from Henkel Asia-Pacific & China Headquarters located in Shanghai, we are penetrating the market further,” he said.

Sonderhoff Suzhou offers high-performance 2-component foam seal, gluing and potting systems based on polyurethane or silicone, as well as the corresponding mixing and dosing machines for the automated application. It has its own polyurethane material production in China for the available product range.

After moving to a bigger location in 2016, the company’s capacities of contract manufacturing for individual sampling of prototypes as well as small to serial production for Chinese customers was increased.

New PU closed-cell foam seal with very low water absorption

At the fairgrounds, Sonderhoff highlighted its new FIP CC (Formed-In-Place Closed-Cell) technology. This technology combines the high water resistance of the silicone world and the attractive material costs of the polyurethane world.
With a slightly glossy surface, the CC foam makes a very high-quality impression visually.
The new predominantly closed cell foam seal Fermapor CC based on PU has been developed for applications with high demands on water resistance. The seal cures without oven or moisture and closes the gap between the more expensive silicone foams and the cheaper mixed-cell PU foam seals.

Already with the metering, the CC foam is applied stable to the component contour in an almost complete sealing dimension by physical foaming. As a result, the user can check immediately after applying the seal whether the seal has been applied at the same height over the entire component contour.

The DM 402 CC mixing and dosing machine developed for the new FIP CC foaming process was demonstrated at the Sonderhoff booth. It is used to meter the very fine-cell, predominantly closed-cell PU soft foam seals Fermapor CC.

The machine has a much shorter set-up time, and the change of material is easier, therefore simplifies and speeds up potential process adjustments. Meanwhile, foam density and hardness can be adjusted in the current process via the machine parameters.

At the booth, the low water absorption of the CC foam seal with an endurance test for water resistance was also demonstrated.

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