14 October 2025

Product family: Laminates made of epoxy and glass cloth

In a world where technological innovation and reliability go hand in hand, high-performance materials are the key to sustainable progress. VRI Composites Deutschland GmbH, a global leader in fiber-reinforced composites, sets standards in the development and production of laminates with glass fabric reinforcement and epoxy resin matrix. The Vetronite product range in particular – including the EGS 102, EGS 103, EGS 619, EGS T23, G11, and G11 Roving grades – stands for the highest quality and versatility in demanding industrial applications. Whether in electrical infrastructure, mechanical engineering, aerospace, or the chemical industry, these materials offer solutions that far exceed standard requirements.

Manufacturing Process

The production of laminates with glass fabric reinforcement and an epoxy resin matrix takes place in several precisely coordinated steps:

Selection of raw materials: High-quality glass fabric serves as the reinforcement carrier, while specially formulated epoxy resins for each grade are used as the matrix material.
Impregnation: The glass fabric is impregnated with the epoxy resins to ensure optimal penetration and wetting of the fibers. The resulting intermediate product is called prepreg.
Lamination: The impregnated layers are stacked on top of each other and built up into panels.
Pressing and Curing: The layers are pressed together under high pressure and controlled temperature to form a solid composite. During this process, the epoxy resin fully cures and bonds the glass fibers into a homogeneous, high-strength structure.
Finishing: After curing, the sheets are cut to the desired dimensions and, if necessary, machined.

This process guarantees consistently high quality, excellent mechanical and electrical properties, and outstanding dimensional stability of the finished products.

Similarities and differences between the products

All of the above-mentioned Vetronite products are based on the principle of glass fabric reinforcement combined with an epoxy resin matrix. However, they differ in their specific properties and areas of application:

Similarities:

All products are made from glass fabric and epoxy resin.
They offer an excellent combination of mechanical strength, electrical insulation, and chemical resistance.
The materials are available in various sizes and thicknesses.

Differences:

Temperature resistance varies from 130°C (EGS 102, EGS 619) to 155°C (EGS 103) to 180°C (EGS T23, G11).
EGS 619 is specially flame-retardant (UL94 V-0), while EGS T23 and G11 are designed for the highest temperature requirements.
EGS 103 and G11 meet the G-11 quality class (higher temperature resistance), while EGS 102 meets the G-10 class.

Standard

VRI Composites' Vetronite products meet a wide range of international norms and quality standards, underscoring their suitability for safety-critical and demanding applications:

NEMA LI-1: G-10 (EGS 102), G-11 (EGS 103, G11), FR-4 (EGS 619)
IEC/DIN EN 60893/61212: EP GC 201 (EGS 102), EP GC 203 (EGS 103, T23, G11), EP GC 308 (T23, G11), EP GC 205 (G11 Roving)
UL 94: Flame Retardancy: EGS 619 with Class V-0, EGS 102m G11 with Class HB
EN 45545-2: Railway approval for G11 and EGS 619 (R22/R23)
Aerospace approvals: EGS 619 is approved by Airbus

This broad standard coverage makes Vetronite products the first choice for developers and designers who require the highest levels of reliability and safety.

Conclusion

The Vetronite series laminates from VRI Composites embody innovative material technology that defines global standards. Thanks to the combination of glass fabric reinforcement and an epoxy resin matrix, they offer unique advantages:

Excellent mechanical and electrical properties
High temperature and chemical resistance
Reliable compliance with international standards
Versatile applications in demanding industries

Whether you are looking for solutions for electrical insulation in high-voltage applications, mechanical engineering, aerospace, or the rail industry: With Vetronite EGS 102, EGS 103, EGS 619, EGS T23, and G11, you are choosing quality that impresses – today and in the future.

FAQ:

Q: Why are glass fabric reinforcements so popular in high-pressure laminates?

A: Glass fabric reinforcements are particularly popular in high-pressure laminates (HPL) because they offer a unique combination of mechanical strength, stiffness, dimensional stability, and durability. The main reasons for their popularity are:

High strength and stiffness: By embedding glass fabric in the polymer matrix, the laminates achieve significantly improved tensile, flexural, and impact strength. This enables the production of components that function reliably even under high mechanical loads.
Low weight: Despite their high strength, the weight of the laminates remains low, which is particularly advantageous in lightweight construction, automotive technology, and mechanical engineering.
Excellent electrical insulation: Glass fabric-reinforced high-pressure laminates offer excellent insulation properties, making them a preferred choice in electrical engineering and electronics.
Chemical and thermal resistance: The combination of glass fabric and suitable resins ensures high chemical resistance and good temperature stability, making them ideal for use in demanding environments.
Dimensional accuracy and dimensional stability: Reinforcement with glass fabric prevents the laminates from warping or shrinking, even under changing temperature and humidity conditions.
Versatile processing: Glass fabric-reinforced laminates can be manufactured in various thicknesses and formats and are easy to machine, drill, and mill without losing their structural integrity.
Price: Compared to other fiber reinforcement materials such as carbon fiber fabrics, glass fiber fabrics are significantly less expensive.

These advantages make glass fabric reinforcements for high-pressure laminates the preferred choice in industries such as electrical engineering, mechanical engineering, and aerospace, where high demands are placed on safety, reliability, and durability.

Q: In which industries are VRI Composites' glass fabric reinforcements particularly in demand?

A: VRI Composites' glass fabric-reinforced laminates are particularly in demand in industries where durability, precision, and reliability are essential. Key application areas include:

Electrical engineering, electronics, and electrical infrastructure: Here, the materials serve as electrical insulation in high-voltage applications, switchgear, transformers, and printed circuit boards. Their excellent insulating properties and high dimensional stability make them the preferred choice for components where safety and functional reliability are top priorities.
Mechanical engineering: The high mechanical strength and temperature resistance of glass fabric reinforcements enable their use in structurally stressed components, such as compressors, engines, and precision mechanical parts.
Aerospace: In this industry, the requirements for weight, strength, and fire protection are particularly high. VRI Composites' products are used here, among other things, for insulation components and components with special fire and flame protection requirements.
Chemical industry: Due to the chemical resistance of the materials, they are used for carrier plates, insulators, and components exposed to aggressive media or extreme environmental conditions.

The versatility of VRI Composites' glass fabric reinforcements makes them an indispensable material in all areas where the highest technical requirements for insulation, stability, and safety are placed.