The Global Polypropylene Battery Separator Market was valued at USD 4,058.50 Million in 2023 and is projected to reach USD 7,632.19 Million by 2029, growing at a Compound Annual Growth Rate (CAGR) of 11.10% during the forecast period (2023–2029). This robust expansion is fueled by the unprecedented global demand for lithium-ion batteries across electric vehicles (EVs), consumer electronics, and grid energy storage systems, driving the need for high-performance, safe, and reliable separator components.

As the world accelerates its transition to clean energy and electrified transportation, the polypropylene battery separator has emerged as a critical enabler for battery performance and safety. In this blog, we profile the Top 10 Companies in the Polypropylene Battery Separator Industry—a group of material science innovators, chemical giants, and specialized manufacturers shaping the backbone of modern energy storage.

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🔟 1. Asahi Kasei Corporation

Headquarters: Tokyo, Japan
Key Offering: Hipore™ wet-process lithium-ion battery separators

Asahi Kasei is a global leader in microporous polypropylene separators, renowned for its Hipore™ brand. The company’s separators are characterized by high porosity, excellent mechanical strength, and superior thermal stability, making them a preferred choice for high-performance automotive and industrial batteries.

Innovation and Expansion Initiatives:

• Continuous R&D in ultra-thin, high-strength separator technologies

• Strategic capacity expansions in Japan, the US, and South Korea to meet EV demand

• Development of coated separators for enhanced safety and cycle life

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9️⃣ 2. Toray Industries, Inc.

Headquarters: Tokyo, Japan
Key Offering: Torayseparon™ dry-process polypropylene separators

Toray Industries is a major force in the separator market, leveraging its expertise in synthetic fibers and textiles. Its Torayseparon™ products are known for their consistent quality, puncture resistance, and optimal pore structure, catering to a broad spectrum of battery applications from power tools to electric vehicles.

Innovation and Expansion Initiatives:

• Investment in advanced manufacturing for high-capacity batteries

• Focus on developing separators with improved shutdown functionality

Download FREE Sample Report: Global Polypropylene Battery Separator Market – View in Detailed Research Report

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8️⃣ 3. Freudenberg Performance Materials

Headquarters: Weinheim, Germany
Key Offering: Lithium-ion battery separators for automotive and industrial use

Freudenberg Group, through its Performance Materials segment, supplies high-quality nonwovens and separators to the global battery industry. The company emphasizes European production and innovation, providing solutions that meet the stringent safety and performance requirements of leading European automakers.

Innovation and Expansion Initiatives:

• Development of next-generation separators with integrated functionalities

• Expansion of production capabilities to support the European EV supply chain

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7️⃣ 4. SK Innovation Co., Ltd.

Headquarters: Seoul, South Korea
Key Offering: Li-ion Battery Separators (LIBS), wet-process separators

SK Innovation is a vertically integrated energy and chemical company with a significant presence in the battery separator market. As a key supplier to its own battery manufacturing arm, SK On, and other global cell producers, the company focuses on producing high-performance wet-process separators that enable longer battery life and enhanced safety.

Innovation and Expansion Initiatives:

• Aggressive global capacity expansion, including plants in Poland and China

• Pioneering work on ceramic-coated separators for thermal stability

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6️⃣ 5. Entek International

Headquarters: Lebanon, Oregon, USA
Key Offering: Extruded microporous membranes for lead-acid and lithium batteries

Entek International is a leading US-based manufacturer of battery separators, serving both the lead-acid and lithium-ion battery markets. The company is a critical supplier to the North American automotive industry, providing durable and reliable separator materials that are essential for battery performance.

Innovation and Expansion Initiatives:

• Major investments in new US manufacturing facilities to support EV growth

• Received significant US Department of Energy grants to scale lithium separator production

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5️⃣ 6. Sumitomo Chemical Co., Ltd.

Headquarters: Tokyo, Japan
Key Offering: PERVIO™ microporous membranes

Sumitomo Chemical is a diversified chemical company with a strong portfolio in advanced materials, including its PERVIO™ brand of lithium-ion battery separators. The company’s products are designed to offer excellent ionic conductivity and high heat resistance, which are critical for fast-charging and high-power applications.

Innovation and Expansion Initiatives:

• Expansion of production capacity in Japan and overseas

• Focus on ultra-high heat resistance and low shrinkage separators

Download FREE Sample Report: Global Polypropylene Battery Separator Market – View in Detailed Research Report

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4️⃣ 7. UBE Corporation

Headquarters: Tokyo, Japan
Key Offering: UPORE® polyolefin microporous membranes

UBE Corporation leverages its chemical synthesis expertise to produce high-quality UPORE® separators. The company’s products are known for their uniformity and reliability, making them suitable for a wide range of battery types, including those requiring high energy density and long-term stability.

Innovation and Expansion Initiatives:

• Development of trilayer separators with enhanced safety features

• Strategic focus on the Asian battery market, particularly China and South Korea

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3️⃣ 8. W-SCOPE Corporation

Headquarters: Tokyo, Japan
Key Offering: Wet-process lithium-ion battery separators

W-SCOPE is a specialized manufacturer focused exclusively on wet-process battery separators. The company has established itself as a key player by offering high-performance products that cater to the evolving needs of high-capacity lithium-ion batteries, particularly in the EV sector.

Innovation and Expansion Initiatives:

• Rapid expansion of production capacity in South Korea and planned facilities in Europe

• Investment in R&D for thinner separators with higher puncture strength

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2️⃣ 9. Bernard Dumas (Part of Groupe Bernard Dumas)

Headquarters: Grenoble, France
Key Offering: Specialty separators for niche battery applications

Bernard Dumas is a European specialist in advanced nonwovens and separator materials. The company serves specialized markets, including high-performance electronics and custom battery solutions, where its technical expertise and ability to produce bespoke materials provide a competitive edge.

Innovation and Expansion Initiatives:

• Focus on high-value, customized separator solutions

• Development of environmentally sustainable separator materials

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1️⃣ 10. Daramic LLC (A Part of Polypore International, LP)

Headquarters: Charlotte, North Carolina, USA
Key Offering: Polyethylene and polypropylene separators for lead-acid and lithium batteries

Daramic is a global leader in battery separator technology, with a long history of innovation, particularly in the lead-acid battery sector. The company is also a significant player in the lithium-ion separator market, offering a range of products designed for durability and performance in demanding applications.

Innovation and Expansion Initiatives:

• Global manufacturing footprint with plants in the Americas, Europe, and Asia

• Ongoing R&D to enhance the performance of separators for start-stop and micro-hybrid vehicles

Get Full Report Here: Global Polypropylene Battery Separator Market – View in Detailed Research Report

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🔋 Outlook: The Future of Polypropylene Battery Separators is High-Performance and Safer

The polypropylene battery separator market is undergoing a profound transformation. While traditional separators continue to serve essential functions, the industry is innovating at a rapid pace to meet the demands of next-generation batteries that require higher energy density, faster charging, and uncompromising safety.

📈 Key Trends Shaping the Market:

• Thinner and Stronger Separators: The push for higher energy density is driving the development of ultra-thin separators that maintain high puncture resistance.

• Coated Separators for Enhanced Safety: Ceramic and alumina coatings are becoming standard to improve thermal stability and prevent internal short circuits.

• Localized Supply Chains: Geopolitical and supply chain concerns are prompting separator manufacturers to establish production facilities closer to battery gigafactories in North America and Europe.

• Sustainability Focus: Research into bio-based polymers and recyclable separator materials is gaining momentum to reduce the environmental footprint of battery production.

The companies profiled above are not merely suppliers of a component; they are foundational partners in the global transition to electrified mobility and renewable energy storage. Their innovations in material science are directly enabling the safer, more efficient, and more powerful batteries that will power our future.

Get Full Report Here: Global Polypropylene Battery Separator Market – View in Detailed Research Report