UBE MAXELL Expands Lithium-Ion Battery Separator Production by 50%
UBE MAXELL plans a 50% increase in lithium-ion battery separator production to meet rising demand from electric vehicles and energy storage systems. This expansion includes a new facility in Japan, with phased construction set for 2026 and 2029, to support the transition toward electrification.

UBE MAXELL CO., LTD. will enhance its lithium-ion battery separator production capacity by 50%, driven by demand from the automotive and energy storage sectors. A new manufacturing facility is set to be constructed at the Sakai Works in Japan, with the first phase of the project beginning in fiscal year 2026 and the second phase in fiscal year 2029.
This expansion follows ongoing construction of another separator base film facility, expected to complete in autumn 2026. The growth aligns with increased demand for electric vehicles and energy storage systems, as industries aim to reduce greenhouse gas emissions.
The need for separator materials will likely remain stable due to the strong market performance of hybrid vehicles and the rise of energy storage solutions. UBE MAXELL's investment solidifies its market position and prepares for future industry growth.




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