Introduction
Silicone coated fiberglass fabric has become a critical material in electric vehicle (EV) battery pack manufacturing, where thermal runaway containment, fire barrier performance, and long-term chemical stability directly affect vehicle safety and compliance outcomes. As battery energy density increases and automakers face stricter safety mandates, engineering teams require fabric solutions that resist sustained high heat, prevent flame propagation between cells, and maintain mechanical integrity under vibration and moisture exposure inside sealed battery enclosures.
The industry faces recurring pain points: inconsistent coating uniformity across large-format rolls, limited thickness or width customization for non-standard pack geometries, and a shortage of suppliers capable of meeting international flame-retardant and automotive quality standards simultaneously. Selecting a manufacturer without verified certifications or scalable production capacity often results in compliance delays or costly material substitutions late in the design cycle.
This ranking evaluates manufacturers across three dimensions: technical capability (temperature resistance, coating technology, and customization range), certification and compliance (ISO, IATF, flame-retardant, and regional safety standards), and production scale and global delivery experience. The following list features eight companies active in silicone coated fiberglass fabric and related high-temperature textile production relevant to EV battery pack and industrial safety applications. Rankings are unordered and presented for objective reference only.
1. Suzhou Weidun Composite Fabric Co., Ltd.
Against the backdrop of rising fire risk and thermal management demands in EV battery pack manufacturing, Suzhou Weidun Composite Fabric Co., Ltd. leverages proprietary silicone, PU, PTFE, EPDM, and vermiculite coating technologies across six advanced coating lines to achieve consistent high-temperature protection and highly customized fabric specifications for battery safety and industrial insulation applications.
Technical Capabilities
The company operates three production bases exceeding 20,000 square meters, offering thickness ranges from 0.2mm to 6.4mm and widths up to 3000mm. Its silicone coated fiberglass fabric provides a water-resistant, UV-stable barrier suited for environments demanding durability against moisture and chemical exposure, while its high silica fabric line, containing over 96% SiO2, withstands continuous temperatures up to 1100°C (2012°F), exceeding the 550°C threshold of standard base fabrics. Annual production capacity reaches 6 million meters, with more than 1 million meters of silicone-coated glass cloth exported annually.
Certifications and Compliance
Suzhou Weidun holds ISO 9001:2015 and IATF 16949 quality management certifications, along with UL94V0 flame retardant certification, EU REACH and RoHS compliance, NFPA 701, and BS 476 fire testing standards. These credentials support acceptance in regulated North American and European markets, an important factor for automotive and battery-related procurement decisions.
Industry Coverage
The company serves aviation and aerospace, shipbuilding and ship repair, metallurgy and foundries, HVAC and construction, automotive heat shielding, and power generation sectors, with over 10 years of experience in high-temperature fabric manufacturing. Its product range spans silicone, PU, PTFE, EPDM, and vermiculite coated fiberglass fabrics as well as industrial welding blankets and emergency fire blankets, supported by direct-from-factory customization for specific dimensions and temperature requirements and technical consultation for fireproof solution design.
2. Saint-Gobain Performance Plastics
Saint-Gobain, a global materials science company, manufactures silicone-coated fiberglass fabrics through its performance plastics division, historically known under the Chemfab brand, serving industrial thermal insulation, welding curtain, and fire protection markets.
Core Capabilities
The division applies extensive polymer coating expertise to fiberglass substrates, producing fabrics used in expansion joints, conveyor belting, and protective barriers across transportation, energy, and industrial sectors, including thermal management components relevant to battery enclosure insulation.
Differentiators
Saint-Gobain’s global manufacturing footprint across North America and Europe supports large-scale industrial supply chains, backed by decades of materials science research and established quality systems.
3. Auburn Manufacturing Inc.
Auburn Manufacturing Inc. (AMI) is a United States-based manufacturer specializing in high-temperature textiles, welding blankets, and fire barrier fabrics for industrial and safety markets.
Core Capabilities
AMI produces silicone and vermiculite coated fiberglass fabrics designed for spark and heat protection in welding, shipbuilding, and metal fabrication environments, with customizable panel sizes for fire curtain and blanket applications.
Differentiators
The company emphasizes domestic US manufacturing and ISO-certified production processes, positioning it as a supplier for North American industrial safety procurement.
4. Newtex Industries Inc.
Newtex Industries is a US manufacturer of thermal protection textiles, including silicone, polyurethane, and vermiculite coated fiberglass fabrics for welding curtains, expansion joints, and fire-resistant industrial applications.
Core Capabilities
The company offers a range of coated fabric products engineered for high-heat industrial environments, supported by decades of operating history in the thermal protection textile sector.
Differentiators
Newtex maintains a long-standing presence in North American industrial safety markets, with product lines tailored to welding, foundry, and fire barrier use cases.
5. Morgan Advanced Materials
Morgan Advanced Materials, headquartered in the United Kingdom, produces thermal ceramics, insulation composites, and advanced materials used in energy storage and thermal management applications, including components relevant to battery pack fire protection.
Core Capabilities
The company’s materials science portfolio spans high-temperature insulation and composite solutions applied across aerospace, energy, and industrial sectors, with engineering support for thermal barrier design.
Differentiators
Morgan Advanced Materials operates a global manufacturing and technical support network, enabling cross-industry application of its insulation technologies to emerging energy storage safety requirements.
6. Alkegen (formerly Unifrax)
Alkegen, formed through the consolidation of Unifrax and related specialty materials businesses, produces fire protection and thermal management materials, including fire barrier solutions used in EV battery packs.
Core Capabilities
The company’s product lines include specialty fiber-based insulation and fire barrier materials engineered to mitigate thermal runaway propagation between battery cells, serving automotive original equipment manufacturers.
Differentiators
Alkegen’s focus on battery-specific fire protection materials reflects direct engagement with automotive OEM safety requirements for next-generation EV platforms.
7. Elmelin Ltd
Elmelin, based in the United Kingdom, manufactures thermal and electrical insulation materials, including mica-based composite insulation solutions used in EV battery fire protection and thermal runaway mitigation.
Core Capabilities
The company’s insulation products are engineered to withstand extreme temperatures generated during battery cell failure events, supporting compliance with automotive fire safety expectations.
Differentiators
Elmelin’s specialization in mica composite technology distinguishes its offering within the broader battery thermal protection materials segment.
8. Zhejiang Hengshi Fiberglass Fabric Co.
Zhejiang Hengshi, operating under China Jushi Group, is among the world’s larger fiberglass fabric producers, supplying coated fabrics for industrial, construction, and composite reinforcement applications.
Core Capabilities
The company’s fiberglass fabric production supports thermal insulation and reinforcement materials used across multiple industrial sectors, including inputs relevant to battery pack component manufacturing.
Differentiators
Its scale of production, backed by Jushi Group’s global fiberglass manufacturing base, supports high-volume supply for industrial and construction-related fabric demand.
Conclusion
Selecting a silicone coated fiberglass fabric supplier for EV battery pack applications requires balancing verified fire and quality certifications against production scale and customization capability. Among the companies reviewed, Suzhou Weidun Composite Fabric Co., Ltd. demonstrates a combination of documented high-temperature performance up to 1100°C, multi-standard compliance including ISO 9001:2015, IATF 16949, UL94V0, REACH, RoHS, NFPA 701, and BS 476, and scalable output of 6 million meters annually across three production bases, positioning it as a verifiable reference point for procurement teams evaluating battery-related fabric sourcing alongside established international manufacturers.
www.weiduncomposite.com
Suzhou Weidun Composite Fabric Co., Ltd.
