1. Structural Support Materials
TPU (Thermoplastic Polyurethane) Transparent Film
Properties: High strength, high toughness, excellent abrasion resistance, tear resistance ≥35 MPa, stable performance in temperatures ranging from -30°C to 80°C.
Function: Serves as the outer layer of the airbag, withstands seat pressure and high-frequency inflation/deflation cycles, ensuring long-term durability without rupture.
3D Knitted Fabric (Mesh Cloth)
Properties: Fabricated via warp-knitted double-needle bed technology, porosity 85%-92%, air permeability ≥200 L/(m²·s), compression rebound rate ≥95%.
Function: Creates a three-dimensional mesh support framework to ensure efficient airflow conduction and uniform diffusion, preventing airflow channel blockage under prolonged compression.
2. Contact Layer & Filtration Materials
Flame-Retardant Nonwoven Fabric
Properties: Oxygen index ≥32%, vertical burning rate ≤100 mm/min, smoke density ≤75, compliant with FMVSS 302 flame-retardant standards.
Function: Acts as the inner contact layer of the airbag, providing a skin-friendly texture while filtering particles >0.1 mm in diameter to prevent foreign matter from entering the ventilation system.
Eco-Friendly Composite Nonwoven Fabric
Properties: Made from recycled nylon or recycled PET, balances breathability and stain resistance, supports custom patterns.
Function: Meets sustainability requirements for mid-to-high-end vehicle models, enhancing interior eco-friendliness.
3. Auxiliary Functional Materials
Nanoscale Hydrophobic Coating
Properties: Contact angle ≥150°, self-cleaning capability, prevents penetration of sweat, beverages, and other liquids.
Function: Extends airbag lifespan and reduces cleaning/maintenance costs.
Antimicrobial Additives
Properties: Silver-ion or quaternary ammonium salt-based agents, antimicrobial rate ≥99.9%.
Function: Inhibits mold growth, reducing odor and skin irritation risks caused by moisture.
4. Structural Reinforcement Materials
High-Strength Sewing Thread
Properties: Aramid or ultra-high molecular weight polyethylene (UHMWPE) fibers, breaking strength ≥50 N, temperature resistance range -50°C to 150°C.
Function: Reinforces airbag edges to prevent seam failure under high-frequency vibrations.
Thermoplastic Adhesive Film
Properties: TPU-based material, melting point 110-130°C, peel strength ≥25 N/cm.
Function: Replaces traditional glue for solvent-free bonding, improving environmental safety and production efficiency.