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Send EmailA heat barrier (also called thermal barrier or heat shield) is a material system designed to reduce heat transfer, protect underlying substrates from high temperatures, and often provide flame resistance. Unlike conventional insulation which primarily slows conductive heat flow, heat barriers are engineered for extreme environments where temperatures can exceed 300–500 °C, open flames, molten metal splashes, or radiant heat are present.
The key technologies used in the products below are:
Aramid Fibres: A class of heat-resistant and flame-retardant synthetic fibres. Two types are used:
Meta-aramid (e.g., Nomex®): Excellent thermal stability, does not melt or drip, decomposes above 370 °C. Used for continuous heat protection.
Para-aramid (e.g., Kevlar®): Very high tensile strength and cut resistance, also heat‑resistant.
Aramid Nonwoven: A felt‑like structure made from randomly oriented aramid fibres. Offers flexibility, good thermal insulation, and light weight relative to woven fabrics.
Aramid Felt: Denser, thicker, and heavier than nonwoven. Provides higher thermal mass and better protection against prolonged heat exposure or direct flame impingement.
Quilting: A stitching technique that mechanically bonds two or more layers together. Prevents shifting of the inner lining and creates air pockets that enhance thermal insulation.
Inner Linings:
Aramid/Viscose FR: A blend of aramid with flame‑retardant viscose – comfortable against skin, absorbs moisture, and still fire‑resistant.
93% MetaAramid – 5% ParaAramid – 2% Antistatic: Optimised for mechanical strength (para) and static dissipation (antistatic additive), used in explosive or electronic environments.
These heat barriers are not just for firefighting suits; they are used in industrial welding, automotive racing, aerospace, and even building fire protection.
All products share a width of 160 cm. The weight (g/m²) and construction determine their thermal performance, durability, and application.
| Code | Weight (g/m²) | Construction | Description & Best Use |
|---|---|---|---|
| 5000 | 205 | Aramid nonwoven quilted to an “Aramid/Viscose FR” inner lining | Lightest nonwoven option. Balanced between flexibility and protection. Suitable for welding blankets, temporary heat shields, and protective clothing liners where moderate thermal insulation is needed. |
| 5001 | 195 | Aramid nonwoven quilted to “93% MetaAramid-5% ParaAramid-2% Antistatic” inner lining | Slightly lighter than 5000 but includes para-aramid for higher tear strength and antistatic property. Ideal for environments with explosive dust (e.g., grain silos, paint spray booths) or sensitive electronics manufacturing. |
| 5002 | 220 | Double layer aramid nonwoven quilted to same antistatic inner lining | Twice the nonwoven thickness gives increased insulation and mechanical resilience. Used in industrial heat protection curtains, equipment covers, and high‑abrasion areas. |
| 5003 | 250 | Aramid felt quilted to “Aramid/Viscose FR” inner lining | Felt construction (denser than nonwoven) offers superior resistance to direct flame and hot surface contact. Weight 250 g/m². Suitable for firefighter station wear, forge shop aprons, and exhaust pipe insulation. |
| 5004 | 380 | Double layer aramid felt quilted to “Aramid/Viscose FR” inner lining | Heavy duty. Two layers of felt provide excellent heat retention and protection against molten metal splashes. Used in aluminium foundries, steel mills, and high‑temperature gasketing. |
| 5005 | 510 | Three layers of aramid felt quilted to “Aramid/Viscose FR” inner lining | Maximum protection in the series. Thick, rigid, and extremely heat‑resistant. Designed for continuous exposure to flames (e.g., burner curtains, kiln liners, spacecraft re‑entry thermal blankets). |
Key difference between nonwoven and felt: Nonwoven (5000-5002) is softer, more drapable, lighter – better for wearable items. Felt (5003-5005) is denser, heavier, more abrasion‑resistant – better for industrialmatting and fixed installations.
The provided catalogue lists codes 5000 through 5005 only. No products with codes 5006, 5007, 5008, etc., are included. Based on the pattern (increasing weight and layers), possible missing items could be:
5006: A four‑layer aramid felt (approx. 640 g/m²) for extreme blast furnace applications.
5007: A variant with aluminised outer layer for radiant heat reflection (e.g., space rescue blankets).
5008: A lightweight (under 200 g/m²) single‑layer felt for cost‑sensitive applications.
If such products are required, a custom manufacturing request would be necessary.
Heat barriers of this type are used across many industries where fire, high temperature, or molten materials are present.
Welding Protection: Welding blankets, screens, and curtains to protect nearby workers and equipment from sparks and spatter.
Foundries & Steel Mills: Aprons, leggings, and gloves for handling hot metals; also furnace curtains and ladle covers.
Glass and Ceramics Industry: Protection from radiant heat near kilns and lehrs.
Automotive & Motorsport: Heat shields around exhaust manifolds, turbochargers, and brake lines; also driver suits and seat insulation.
Structural Firefighting Turnout Gear: Outer shell, moisture barrier, and thermal liner – aramid felts are used as the thermal liner to protect from burn injuries.
Wildland Firefighting Apparel: Lighter nonwoven barriers (like 5000) that allow mobility while blocking radiant heat.
Proximity Suits: For aircraft rescue and industrial fire brigades – heavy felt (5005) combined with aluminised surfaces.
Aircraft Engine Nacelles: Heat barriers between hot engine parts and composite airframe structures.
Rocket Launch Pads: Temporary heat barriers to protect umbilicals and ground equipment from exhaust flames.
Military Vehicle Crew Compartments: Spall liners that also provide thermal protection from shaped charge jets or fire.
Firestop Curtains: Deployable barriers that close off openings (e.g., escalator openings, atriums) during a fire – made from multi‑layer aramid felt.
Structural Steel Fireproofing: Wrapping columns and beams with aramid felt to extend fire resistance rating.
Chimney and Duct Insulation: High‑temperature exhaust ducts in restaurants, laboratories, and industrial plants.
Battery Thermal Runaway Barriers: In electric vehicle (EV) battery packs, aramid nonwovens prevent propagation of a cell fire.
Solar Thermal Plants: Protection around molten salt pipes and receivers.
Nuclear Power: Thermal barriers in containment systems and for cable tray fire protection.
Flash Fire Suits (for oil & gas, chemical plants): Lightweight nonwoven linings provide comfort and flame resistance.
Electrical Arc Flash Protection: Aramid with antistatic (as in 5001, 5002) is used in suits for electrical workers.
Aluminised Rescue Suits: Heavy felt (5005) as the thermal layer behind an aluminised outer shell.