With bonding varnish (Backlack), several functions can be integrated into the lamination stack. This saves on components when assembling the electric motor.

Bonding varnish (Backlack) makes it possible to manufacture lamination stacks with maximum precision. Thanks to the full-surface connection, even filigree geometries can be precisely punched, stacked, and bonded.

Bonding varnish (Backlack) stacks are very stable. This simplifies further processing and assembly. Thanks to the wide-area connection, the stack can be handled like a milled part. (Further) mechanical processing is easily possible.

Unlike punch-stacking or welding, bonding does not cause any direct short circuits between the laminations, resulting in better magnetic properties and fewer losses.

The laminations do not fan out and the full-surface connection reduces both vibration and noise. Ideal for meeting the increasing demands.

Dirt and particles are firmly bonded thanks to the wide-area connection. The cleanliness is higher. No liquid is drawn in between the laminations.

Full-surface bonding improves thermal conductivity within the lamination stack, as bonding varnish (Backlack) has better thermal conductivity than air. Even optimized bonding varnishes (Backlack) with higher thermal conductivity can be achieved.

Bonded lamination stacks can be mass-produced using state-of-the-art processes and with maximum process reliability. Our fully digitalized processes provide more transparency than any other process.