Battery Separator Film
Precision for high-performance batteries.
Roller solutions for safe, high-performance batteries. Separator films with a future – manufactured with rotary precision
Separator films are at the heart of modern battery cells – they ensure cell behavior, influence ion transport, and determine service life. Our specialized roll solutions enable precise surface finishing, exact thickness control, and functional microstructuring – for the entire range of separators (PE, PP, ceramic-coated, etc.). Whether smoothing, structuring, or functionalizing – with rotary tools from our production, you can achieve reproducible quality and high processing speeds.
Our roll solutions are tailored precisely to your individual requirements. Using state-of-the-art manufacturing technologies such as direct laser engraving and various high-precision mechanical processes, we ensure that every structure meets the highest standards of quality and repeatability.
Our services for separator films at a glance
For precise surface smoothing, controlled thickness, and flatness.
For producing functional surfaces (e.g., capillary structures, surface patterns).
Test your materials and designs under realistic conditions.
Ready for use with PE, PP, ceramic-coated films, etc.
From CAD and simulation to high-precision series production.
Solutions for your energy needs
Our roller solutions adapt to your product: smooth rollers for layer control, textured rollers for functional patterns, embossing rollers for specific requirements in terms of adhesion or capillarity.
Process reliability
Our rotary tools ensure continuous machining with consistently high accuracy – ideal for mass production of separator films with the tightest tolerances.
Under scrutiny
In our technical center, we analyze and validate new processes, materials, and roll geometries. For reliable transfer to series production.
Your advantages with sour acid rollers for battery separator film
Contact person
Start your separator film innovation with us!
Steffen Völker Managing Director Surfaces steffen.voelker@saueressig.de +49 152 08953088
