Introduction
A separator is a crucial device used in various industries to separate different components from a mixture. There are different types of separators, such as solid – liquid separators, liquid – liquid separators, and gas – solid separators. They play an indispensable role in industries like chemical, petrochemical, food and beverage, environmental protection, and energy storage. For example, in the battery industry, separators are essential for lithium – ion batteries, preventing short – circuits between the anode and cathode while allowing the passage of ions. In environmental protection, separators are used to treat wastewater and remove pollutants. Separator
Now, let’s take a look at the top 10 separator factories in the world in 2026.
1. Zhejiang Mingjia Environmental Protection Technology Co., Ltd
Zhejiang Mingjia Environmental Protection Technology Co., Ltd is a leading enterprise in the field of environmental protection separators. The company is committed to providing high – quality separation solutions for environmental protection projects. It has a professional R & D team that continuously explores and innovates in the field of separation technology.
Features:
- Advanced materials: The company uses high – performance materials in its separators, which can effectively resist corrosion and wear, and have a long service life.
- Customized design: Mingjia can provide customized separator solutions according to different customer needs and specific project requirements.
- High separation efficiency: Its separators are designed to achieve high – precision separation, which can effectively remove various pollutants from wastewater.
Advantages:
- Rich experience: With years of experience in the environmental protection industry, the company has accumulated a wealth of practical experience in separator design and manufacturing.
- Good after – sales service: Mingjia provides comprehensive after – sales service, including installation guidance, maintenance, and technical support.
- Cost – effective: The company offers high – quality products at a reasonable price, which is very competitive in the market.
Website: https://www.mingjiaeco.com/
2. Asahi Kasei Corporation
Asahi Kasei is a well – known Japanese multinational company. It has a long – standing history in the chemical and materials science industries. The company is involved in a wide range of businesses, from fibers and chemicals to electronics and healthcare.
Features:
- High – performance battery separators: Asahi Kasei is a major player in the lithium – ion battery separator market. Its separators have excellent thermal stability, which can prevent thermal runaway in batteries, improving the safety of battery systems.
- Precision manufacturing: Using advanced manufacturing processes, the company can produce separators with uniform pore sizes and thickness, ensuring consistent battery performance.
- Innovation – driven: The company invests heavily in R & D, constantly exploring new materials and technologies to improve the performance of its separators.
Advantages:
- Global brand recognition: Asahi Kasei has a strong global brand, which is trusted by customers around the world.
- Integrated production: It can control the entire production process from raw materials to the final product, ensuring high – quality and stable supply.
- Strong R & D capabilities: The company’s R & D teams are constantly working on new product development, keeping it at the forefront of the separator technology.
3. Celgard LLC
Celgard is a pioneer in the field of microporous membrane technology. It is well – known for its separators used in lithium – ion batteries and other energy storage applications.
Features:
- Unique microporous structure: Celgard’s separators have a well – defined microporous structure, which allows for efficient ion transport while maintaining good mechanical properties.
- High porosity: The high porosity of its separators enables high – rate charging and discharging of batteries, improving the overall performance of the battery system.
- Chemical resistance: The separators can resist various chemicals in the battery electrolyte, ensuring long – term stability.
Advantages:
- Early market entry: Being one of the first companies in this field, Celgard has a deep understanding of the market and customer needs.
- Patented technology: The company holds a number of patents related to separator technology, giving it a competitive edge.
- Extensive application experience: Celgard’s separators are widely used in various types of lithium – ion batteries, from consumer electronics to electric vehicles.
4. Toray Industries, Inc.
Toray is a large – scale Japanese company with a diverse business portfolio, including fibers, plastics, chemicals, and carbon fibers. In the separator field, it has made significant contributions.
Features:
- High – strength separators: Toray’s separators have high mechanical strength, which can withstand the stress during battery assembly and operation, reducing the risk of short – circuits.
- Multi – layer structure design: The company uses a multi – layer structure in its separators, which can enhance the safety and performance of batteries.
- Good wettability: The separators have excellent wettability with the electrolyte, facilitating ion transfer and improving battery efficiency.
Advantages:
- Diversified R & D resources: Toray can draw on its resources from different business units for separator R & D, promoting cross – disciplinary innovation.
- Large – scale production capacity: It has large – scale production facilities, which can meet the large – volume demand of the market.
- Quality control system: The company has a strict quality control system to ensure the consistency and high quality of its products.
5. Entek International LLC
Entek is an American company that specializes in the production of battery separators. It has a long – term focus on research and development in the field of energy storage.
Features:
- Thermal shutdown function: Entek’s separators are designed with a thermal shutdown function. When the battery temperature rises abnormally, the separator can close its pores, preventing further current flow and enhancing battery safety.
- High – purity materials: The company uses high – purity raw materials in the production of separators, reducing the risk of impurities affecting battery performance.
- Flexible production process: Entek can adjust its production process according to different battery requirements, providing customized solutions.
Advantages:
- Strong R & D focus: The company invests a large amount of resources in R & D, constantly improving the performance and safety of its separators.
- Good customer relationships: Entek has established long – term and stable relationships with many battery manufacturers, understanding their specific needs.
- Compliance with international standards: Its products comply with various international standards, which is conducive to global market expansion.
6. SKIET (SK Innovation’s Battery Separator Business Unit)
SKIET is a key part of SK Innovation, a major South Korean energy and chemical company. It has rapidly developed in the battery separator market.
Features:
- Ultra – thin separators: SKIET is known for its ultra – thin battery separators, which can increase the energy density of batteries while maintaining good mechanical properties.
- High – density pore structure: The high – density pore structure of its separators allows for faster ion diffusion, improving battery charge and discharge rates.
- Surface – modified separators: The company uses surface – modification technology to improve the adhesion between the separator and the electrodes, enhancing battery performance.
Advantages:
- Backed by a large group: SKIET benefits from the strong financial and technological support of SK Innovation, enabling it to invest in large – scale R & D and production.
- Rapid production expansion: It has been expanding its production capacity rapidly to meet the growing global demand for battery separators.
- Good brand in the Asian market: SKIET has a good brand image in the Asian market, especially in South Korea and China, which are major battery – producing regions.
7. Ube Industries, Ltd.
Ube is a Japanese chemical company with a wide range of business activities, including the production of separators for various applications.
Features:
- High – performance engineering polymers for separators: Ube uses its expertise in high – performance engineering polymers to develop separators with excellent mechanical and chemical properties.
- High – temperature resistance: The separators can withstand high temperatures, which is crucial for applications in harsh environments or high – power batteries.
- Integrated material – to – separator production: Ube can produce both the raw materials and the final separators, ensuring better control over product quality.
Advantages:
- Long – term material science experience: With decades of experience in material science, Ube has a deep understanding of polymer chemistry, which is beneficial for separator development.
- Diversified product portfolio: The company offers a variety of separator products for different industries, reducing its dependence on a single market.
- Global sales network: Ube has a global sales network, which can quickly respond to customer needs around the world.
8. Freudenberg Performance Materials
Freudenberg is a German company with a long history in the field of materials technology. It is involved in the production of separators for various applications, including batteries and filtration.
Features:
- Non – woven separator technology: Freudenberg uses non – woven materials in its separators, which offer good flexibility and high porosity.
- Excellent filtration performance: In addition to battery separators, its products also have excellent filtration performance in other applications, such as air and liquid filtration.
- Sustainable production: The company focuses on sustainable production methods, using environmentally friendly materials and processes.
Advantages:
- German engineering quality: Freudenberg is known for its high – quality German engineering, ensuring the reliability and performance of its separators.
- Cross – industry application experience: The company’s experience in different industries allows it to transfer knowledge and technology between different applications, promoting innovation.
- Strong R & D and innovation culture: Freudenberg has a strong R & D and innovation culture, constantly exploring new materials and applications for its separators.
9. Sumitomo Chemical Co., Ltd.
Sumitomo Chemical is a large Japanese chemical company with a wide range of products, including battery separators.
Features:
- High – quality polyolefin separators: The company is good at producing polyolefin – based separators, which have excellent chemical stability and mechanical properties.
- Advanced surface treatment: Sumitomo Chemical uses advanced surface – treatment technology to improve the performance of its separators, such as enhancing wettability and reducing internal resistance.
- Large – scale production: It has large – scale production facilities, which can ensure the stable supply of separators to the market.
Advantages:
- Comprehensive chemical expertise: Sumitomo Chemical’s comprehensive chemical expertise allows it to optimize the production process and product performance of separators.
- Long – term market presence: With a long – term presence in the market, the company has a good understanding of customer needs and market trends.
- Global supply chain: It has a well – established global supply chain, which can efficiently deliver products to customers around the world.
10. W-Scope Corporation
W – Scope is a company that focuses on the development and production of advanced battery separators. It is relatively young but has shown strong innovation capabilities.
Features:
- Nanostructured separators: W – Scope is developing separators with nanostructures, which can provide higher ion conductivity and better battery performance.
- Custom – made for next – generation batteries: The company’s R & D is focused on meeting the requirements of next – generation batteries, such as solid – state batteries.
- Collaborative R & D model: W – Scope often collaborates with research institutions and other companies, promoting cross – border innovation.
Advantages:
- Innovative R & D approach: Its innovative R & D approach enables it to develop unique separator technologies that may have a competitive edge in the future market.
- Flexible response to market changes: As a relatively small – scale company, it can be more flexible in responding to market changes and emerging customer needs.
- Potential for rapid growth: With its focus on new technologies and next – generation applications, W – Scope has the potential for rapid growth in the separator market.
Fermentation Tank These top 10 separator factories in the world in 2026 are leading the development of separator technology through continuous innovation, high – quality production, and strong market competitiveness. Each of them brings unique features and advantages to the global separator market.
