Multilayer Textile Material with Mineral Reinforcement Fibres
Applicant(s): Airbus Helicopters [FR]; ISOMATEX [BE]
Inventor(s): Tigran Vartanian; Edwin Henry; Bernard Voss; Patric Boschet; Blandine Pascal; Frédéric Aimar; Pascal N'guyen
Patent number: EP4684957
Publication date: 2026-01-28
The invention concerns a multilayer textile assembly made of mineral reinforcing fibres, designed for use in high-performance composite structural components, particularly in aircraft and other vehicles.
Problem
Composite structural components used in demanding environments—such as engine compartments or battery housings—must withstand high temperatures, aggressive fluids, impacts, fire exposure, and corrosion.
Conventional composites often rely on chemical binders that may release harmful or flammable vapours under heat. Additionally, achieving an optimal balance between mechanical strength, fire resistance, chemical durability, and low weight remains technically challenging.
Solution
The invention introduces a multilayer textile assembly comprising:
- An outer layer and a base layer
- A core positioned between them
- At least one subassembly within the core, each including:
- A woven inner layer made of continuous mineral fibres
- A felt layer made of discontinuous mineral fibres
The woven inner layer is arranged between the felt layer and the outer layer. This structured combination of continuous and discontinuous mineral fibres enhances structural integrity and protective performance.
Summary of Benefits
- High mechanical strength
- Enhanced resistance to heat, fire, and thermo-oxidative ageing
- Improved barrier performance against fluids and flames
- Non-combustibility and absence of toxic fumes
- Excellent thermal stability (softening above 800–900°C; melting above 1150°C)
- Reduced thermal flow and prolonged structural integrity during fire exposure
- Lightweight solution suitable for aerospace applications
Overall, the invention delivers a safer, more durable, and high-performance composite solution for demanding environments.
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