Insulation for the highest temperature requirements

Textile shields for the future of fire protection

Smoke curtains and fire curtains are key components of preventive fire protection. They serve to create fire and smoke compartments in buildings and protect people, property, as well as escape and rescue routes. As a manufacturer of technical high-temperature fabrics made from, among others, glass fibers, we provide the
foundation for innovative fire protection systems – high-temperature-resistant, tested materials that comply with the required fire resistance classes. Optimized weaves and advanced coatings support modern, efficient fire protection systems (E, EW, EI). Lighter and more adaptable than steel, fire curtains integrate seamlessly into contemporary architecture, meeting the demand for flexible, discreet fire protection.

Possible Certifications

A large selection of our fabrics meet the European requirements for fire protection and are certified in accordance with DIN EN 13501 for the fire classification of construction products and building elements: A2-s1, d0 (also MO, M1)

Technical Data Fabrics

KlevoGlass & KlevoGlass texo with or without wire reinforcement
+ Silicone coating
+ PU/PVA coating
+ coated with Aluminiumfoil

Effect textured Itex fabric wire reinforced for high isolation values
+ multilayer option
+ coated with Aluminiumfoil

Focus on battery safety

Lithium-ion batteries pose particular risks: A so-called thermal runaway can lead to intense heat, flames, smoke, and toxic gases within seconds. Rapid, safe containment is crucial, especially for electric vehicles, e-scooters, and e-bikes in underground garages, residential complexes, charging and parking stations, or stationary storage facilities. In workshops, test laboratories, or transport vehicles, our fabric helps to limit battery fires.

Technical textiles for fire containment blankets

• Material: High-quality glass or silicate fabric with special functionalization
• Temperature resistance: Permanent up to 550 °C, short-term > 1,000 °C
• Suppresses flame spread and protects adjacent objects
• Reduces heat transfer to the outside
• Non-combustible, flame-retardant, and spark-resistant
• Minimizes smoke and gas release into the environment

Proven technology from aviation

Fire containment covers (FCCs) made from similar glass fabrics have been used in air traffic control for years. These covers serve to isolate burning cargo on board aircraft for 6 hours, giving the flight crew valuable time to make a safe landing. Our expertise in developing such FCCs flows directly into the manufacture of our fire containment blankets. As a result, you benefit from:

• Aviation-proven materials with maximum safety
• Proven technologies for controlled fire containment
• Internationally recognized standards in the field of fire containment

Proven quality, next-level performance

Our proven Sestonit® fabric with special treatment has long been the go-to material for high-temperature applications. Whether for chimney and furnace insulation, gas turbines, foundries, or the automotive industry, Sestonit® delivers reliable performance wherever extreme heat demands it.

The new generation, Sestonext, takes performance to the next level:

• Short-term use up to 1,300 °C (4 hours)

• Increased strength while maintaining a textile feel

• Residual strength of about 20 % at 105 N/cm

Building on the trusted quality of Sestonit, Sestonext combines enhanced thermal performance with a proven textile character, enabling even more demanding applications at the highest temperatures.

with conduction, convection and radiation in just one layer

With its innovative multi-layer design, our new advanced intumescent flexible glass fabric sandwich
structure sets new standards in safety and efficiency. Built from a smart combination of aluminum foils,
fiberglass fabric with wire reinforcement and intumescent bonding layers it delivers superior protection by
addressing all three mechanisms of heat transfer.
When exposed to heat, the special intumescent adhesive combining both textile layers expands into a
highly effective insulating layer filled with microscopic air pockets. Forming a stable network of foamed
carbon, this unique barrier dramatically slows the transfer of heat and prevents flames from breaking
through. Meanwhile, reflective aluminum layers on both sides act like a shield, bouncing back radiant heat
for extra protection.
Unlike conventional multi-layer systems, which are stitched together and prone to wear, our development
features a fully bonded structure. This eliminates weak points and avoids mechanical friction. At the same
time, installation and further processing are easier, as all performance layers come integrated in one
compact and elegant system.

Technical Data

Thickness: 2,3 mm
Weight: 1730 g/m²
Strength values of 1000 N/cm warp & weft
Expansion temperature: 180–220 °C
7 to 10 x increase in volume

Possible Certifications

Mulit-layer designs aimed for EW & EI curtain systems enable smoke and flame barriers as well as thermal insulation. Suitable for use in fire protection according to standard temperature curve up to 1,200 degrees.

Textile shields for the future of fire protection

Smoke curtains and fire curtains are key components of preventive fire protection. They serve to create fire and smoke compartments in buildings and protect people, property, as well as escape and rescue routes. As a manufacturer of technical high-temperature fabrics made from, among others, glass fibers, we provide the
foundation for innovative fire protection systems – high-temperature-resistant, tested materials that comply with the required fire resistance classes. Optimized weaves and advanced coatings support modern, efficient fire protection systems (E, EW, EI). Lighter and more adaptable than steel, fire curtains integrate seamlessly into contemporary architecture, meeting the demand for flexible, discreet fire protection.

Possible Certifications

A large selection of our fabrics meet the European requirements for fire protection and are certified in accordance with DIN EN 13501 for the fire classification of construction products and building elements: A2-s1, d0 (also MO, M1)

Technical Data Fabrics

KlevoGlass & KlevoGlass texo with or without wire reinforcement
+ Silicone coating
+ PU/PVA coating
+ coated with Aluminiumfoil

Effect textured Itex fabric wire reinforced for high isolation values
+ multilayer option
+ coated with Aluminiumfoil

Focus on battery safety

Lithium-ion batteries pose particular risks: A so-called thermal runaway can lead to intense heat, flames, smoke, and toxic gases within seconds. Rapid, safe containment is crucial, especially for electric vehicles, e-scooters, and e-bikes in underground garages, residential complexes, charging and parking stations, or stationary storage facilities. In workshops, test laboratories, or transport vehicles, our fabric helps to limit battery fires.

Technical textiles for fire containment blankets

• Material: High-quality glass or silicate fabric with special functionalization
• Temperature resistance: Permanent up to 550 °C, short-term > 1,000 °C
• Suppresses flame spread and protects adjacent objects
• Reduces heat transfer to the outside
• Non-combustible, flame-retardant, and spark-resistant
• Minimizes smoke and gas release into the environment

Proven technology from aviation

Fire containment covers (FCCs) made from similar glass fabrics have been used in air traffic control for years. These covers serve to isolate burning cargo on board aircraft for 6 hours, giving the flight crew valuable time to make a safe landing. Our expertise in developing such FCCs flows directly into the manufacture of our fire containment blankets. As a result, you benefit from:

• Aviation-proven materials with maximum safety
• Proven technologies for controlled fire containment
• Internationally recognized standards in the field of fire containment

Proven quality, next-level performance

Our proven Sestonit® fabric with special treatment has long been the go-to material for high-temperature applications. Whether for chimney and furnace insulation, gas turbines, foundries, or the automotive industry, Sestonit® delivers reliable performance wherever extreme heat demands it.

The new generation, Sestonext, takes performance to the next level:

• Short-term use up to 1,300 °C (4 hours)

• Increased strength while maintaining a textile feel

• Residual strength of about 20 % at 105 N/cm

Building on the trusted quality of Sestonit, Sestonext combines enhanced thermal performance with a proven textile character, enabling even more demanding applications at the highest temperatures.