Winding cores in battery production
In battery and fuel cell production, cleanrooms and dry rooms impose particularly stringent demands on the materials and production equipment utilized. Moisture, dust, or impurities can cause lasting damage to the sensitive electrode tracks and metallic foils, thereby impairing the performance and lifespan of the energy storage devices. Furthermore, the winding process necessitates precise and consistent material guidance to prevent tension loss, wrinkling, or material distortion.The innovative WinCore® winding cores from INOMETA are specifically engineered to address these challenges. They guarantee dust-free and abrasion-free operation, maintain permanent dimensional stability even under fluctuating temperature and humidity conditions, and thus ensure a smooth, low-tension web run. Consequently, they assure a high level of process reliability, reduce rejects, and help to significantly minimize downtime in one of the most demanding production areas of the energy storage industry.
Contact our sales team today for expert advice on WinCore® winding cores and other first-class roller solutions from INOMETA, the leading manufacturer from Germany. Make your inquiry now!
For WinCore® winding cores, INOMETA employs state-of-the-art high-performance materials such as aluminium, CFRP, and GRP, carefully selected according to specific requirements concerning weight, rigidity, and temperature resistance. Aluminium exhibits particular excellence due to its outstanding thermal stability, whereas CFRP and GRP offer compelling benefits with their low weight and high strength. This material diversity enables optimal adaptation to various production processes and contributes significantly to durability, sustainability, and process reliability. In comparison to conventional cardboard cores, WinCore® winding cores provide decisive advantages. They demonstrate significantly greater resistance to mechanical and thermal stresses, do not generate dust or abrasion, and maintain their dimensional integrity even under extreme conditions. Consequently, they sustainably reduce waste and resource consumption and are successfully implemented in key production stages within battery and fuel cell manufacturing, including substrate production, electrode production, coating, drying, slitting, cell assembly, and further processing.
WinCore® winding cores are indispensable in the early production phases of battery and fuel cell manufacturing. They function as precise carriers for sensitive metallic foils, such as copper, separator- or aluminium, which serve as current collectors in battery cells. Their high concentricity ensures tension-free and crease-free winding of these foils, effectively preventing mechanical stress and material deformation. This gentle handling is essential for the functionality and reliability of the subsequent cells. With WinCore® winding cores, manufacturers benefit from improved material quality and enhanced process stability throughout the substrate and electrode production value chain.
In the critical production steps of coating, drying, and slitting, precise and dependable winding cores are essential for a trouble-free material flow. WinCore® winding cores from INOMETA excel with their outstanding thermal resistance, reliably preventing deformation of the cores even at elevated temperatures. Their precise geometry ensures a consistent unwinding and winding process, which significantly contributes to uniform coating quality. By preventing material displacement or wrinkling, rework and rejects are substantially reduced. These process-reliable winding cores therefore enhance the efficiency and cost-effectiveness of the entire battery and fuel cell production process.
Robust and reusable winding cores are essential for cell assembly and subsequent processing, such as the precise cutting and stacking of electrode tracks. Thanks to their durable design, WinCore® winding cores from INOMETA offer exceptional stability and reliability – even with repeated use. Compared to single-use products, they not only minimize downtimes and process interruptions but also make a significant contribution to conserving resources and reducing waste in battery production. Their implementation assists manufacturers in establishing sustainable production processes throughout the entire value chain of the battery and fuel cell industry.
Production interruptions and material losses represent significant challenges in battery and fuel cell manufacturing. INOMETA’s WinCore® winding cores establish new benchmarks in this regard, owing to their exceptional dimensional accuracy and stability. Their precision manufacturing ensures uniform and tension-free guidance of copper, aluminium, separator- and other delicate foils, effectively preventing unwanted machine halts and disruptions in the production flow.The minimization of wrinkling and material distortion leads to a substantial reduction in rejects, directly translating to enhanced system availability, increased production capacities, and improved economic efficiency of the production lines. Consequently, WinCore® winding cores sustainably promote stable and efficient production processes within the modern energy storage industry.WinCore® winding cores from INOMETA particularly demonstrate their advantages in sensitive production environments such as cleanrooms and dry rooms. Manufactured from durable and high-quality materials like aluminium, CFRP, and GRP, they do not generate any dust or fiber discharge – a decisive advantage over conventional cardboard cores, which often lead to contamination in these environments. Furthermore, these dimensionally stable winding cores maintain their exact shape permanently, even under demanding conditions, ensuring consistent material guidance without irregular web lengths.
WinCore® winding cores provide companies with a wide range of advantages that optimally combine ecological and economic benefits:
WinCore® Ecoline winding cores are high-quality aluminium solutions specifically engineered for use with expansion shafts and chucks. Their high reusability over thousands of cycles offers a sustainable and cost-efficient option for battery and fuel cell production. Featuring tight tolerances and excellent concentricity, they prevent wrinkling and ensure precise winding processes. Optionally, they can be hard anodized or coated with PROTEK® coatings to meet specific wear resistance requirements. Available in standard diameters of 3, 6, 8, and 10 inches, they provide flexible application possibilities throughout the entire production chain.
Building upon the Ecoline series, the Proline version offers even more refined specifications for particularly demanding winding processes within the energy storage industry. Featuring individually manufactured inserts at the core ends, these aluminium cores exhibit exceptional robustness and durability, significantly extending their service life and minimizing downtimes. Proline winding cores guarantee maximum dimensional accuracy and concentricity, ensuring optimal process reliability, especially in highly automated production processes in battery and fuel cell manufacturing. Available in a standard 6-inch diameter, they are also offered in 8 and 10-inch diameters upon request.
This specialized version features an adhesive surface that significantly simplifies the direct application of thin foils, such as copper, aluminium, and plastic, onto the winding core. These foils can be applied by machine without the need for double-sided adhesive tape, which reduces set-up times and enhances process reliability. Following unwinding, the core is immediately ready for reuse as no adhesive residue requires removal. The clean surface ensures the even winding of the initial layers, which is particularly beneficial for delicate materials in battery and fuel cell production. Optionally available with BfR approval as well.
INOMETA offers WinCore® winding cores featuring a cut-resistant surface for particularly demanding applications where sharp edges and adhesive tape residues stress the core surface. This resilient coating prevents cuts from utility knives and allows for the swift and clean removal of winding and adhesive tape remnants. This keeps the surface free of scores and scratches, ensuring the quality of the initial winding layers and significantly extending the service life of the winding cores. The FDA-compliant coating meets the most stringent hygiene standards, which are particularly critical in sensitive battery and fuel cell production environments.
WinCore® winding cores offer a sustainable solution for your production by reducing waste and are designed for multiple reuses thanks to their long service life. This translates to both ecological and economic benefits for you. For a bespoke design tailored to your specific requirements, we offer comprehensive consultation, supported by our technical data sheet.As your partner for winding cores, rollers, and digital solutions, we optimize and automate your production processes using state-of-the-art technology, ensuring maximum safety, and leveraging a broad portfolio of roller types. Contact our sales team to discover more about our customized winding and roller solutions.
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