Search
MyBorealis
September 11, 2025
Story
K 2025 Innovation Energy Mobility

Powering the Energy Transition: A New Polypropylene Concept for Battery Pouch Cell Laminates

Borealis proudly introduces a new three-layer cast polypropylene (cPP) concept for polymer-aluminum laminate for lithium-ion battery (LIB) pouch cells. This concept supports the growing demand for locally available, high-performance materials within the evolving battery ecosystem.

Borealis proudly introduces a new three-layer cast polypropylene (cPP) concept for polymer-aluminum laminate for lithium-ion battery (LIB) pouch cells.

Borealis proudly introduces a new three-layer cast polypropylene (cPP) concept for polymer-aluminum laminate for lithium-ion battery (LIB) pouch cells.

© Getty Images

With a strong heritage in the energy and mobility sectors, and deep expertise in flexible packaging, Borealis is uniquely positioned to meet the complex requirements of LIB pouch films—ensuring safety, durability, and efficient processing.

The three-layer cPP polymer-laminate structure delivers:

  • Efficiency through excellent deep-drawing behavior in cell manufacturing
  • Safety via hermetic pouch seals and high seal strength
  • Durability enabled by robust laminate bonding and adhesion
Illustration of aluminum laminate for battery pouch cells, including base layer, barrier layer and the sealing layer. The sealing layer (blue) can be made with Borealis’ new three-layer cast polypropylene (cPP) concept.

Illustration of aluminum laminate for battery pouch cells, including base layer, barrier layer and the sealing layer. The sealing layer (blue) can be made with Borealis’ new three-layer cast polypropylene (cPP) concept.

© Borealis

Local Supply, Global Relevance

As battery production scales in regions, the ability to source materials locally is becoming a strategic advantage. Portable energy storage is not only a key enabler of decarbonization—it also supports strategic autonomy and a wide range of applications beyond electric vehicles. This aligns with initiatives like EU Battery Booster package, as well as major public investments and regulatory frameworks across Europe—such as the EU’s Horizon Europe and Innovation Fund. These are designed to accelerate battery manufacturing, secure critical raw materials, and strengthen energy resilience as well as industrial competitiveness.

Collaboration at the Core

This project is a testament to the power of collaboration. From the Borealis innovation lab to film producers, laminators, adhesive experts, battery technology advisors, and cell manufacturers—our partners in all areas bring valuable expertise.

Following successful internal testing and promising trials with customers, the solution is now entering the next phase of validation with an independent testing institute specialized in battery technology.

See it at K 2025

Join us at K Fair 2025 (Hall 6, Stand A43) to see the first pouch cell produced with the Borealis cPP concept—and discover how collaboration can drive the next step in strengthening the battery materials landscape.

Borealis and Borouge - Curious, Collaborative, Circular

Borealis and Borouge - Curious, Collaborative, Circular

© Borealis

K 2025 Might Be Over, but Innovation Never Stops – Let’s Connect.

One of our experts will review your inquiry and get in touch with you as soon as possible.

Please check reCaptcha

Borealis GmbH is the Controller of your personal data for the purposes of the General Data Protection Regulation (GDPR). By submitting your data, you acknowledge and consent to the collection, use, transfer, storage, processing and disclosure of your personal information in conjunction with this event by each of the members of Borealis GmbH and its affiliates (Borealis Group) and Borouge; please note that Borealis Group companies and Borouge are located in countries where the personal information and data protection laws of your home country may not apply. Borealis and Borouge will contact you with information about the subject of your request and, further, related email information and ongoing news updates in relation to the identified area of interest based upon your consent. Read the Borealis Privacy Statement and the Borouge Privacy Statement. You can withdraw your consent at any time in the privacy settings.