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Automotive Front Dual-Density Polyurethane Seat Cushion Foam Core Assembly
This dual-hardness molded polyurethane seat cushion core is designed for front-row passenger vehicle seats, paired with an integrated open-cell ventilation layout. Featuring a soft center seating zone and firm side bolster supports, the graduated density structure balances short-term plush touch with strong long-term ergonomic support. The high-density base core and side wings stabilize body position during turning while preventing long-term sagging. With superior fatigue resistance and vibration absorption compared to conventional uniform foams, it significantly reduces driving fatigue and resists deformation over an extended service life.
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Top Comfort Layer
Density 32 to 38 kg/m3, Firmness 28 to 35 ILD (N) for ergonomic contouring and plush initial touch.
Bottom Load-Bearing Core
Density 42 to 48 kg/m3, Firmness 40 to 50 ILD (N) for primary pressure support and anti-sagging durability.
Side Bolster Support Zones
Density 50 to 55 kg/m3, Firmness 55 to 65 ILD (N) for lateral restraint and posture stabilization.
Resilience Rate
60% or higher (High resilience grade).
Compression Permanent Set
4% or lower (Tested at 50 degrees C for 22 hours under constant compression).
Tensile Strength
120 kPa or higher.
Tear Strength
2.0 N/mm or higher.
Safety & Environmental Standards
Flammability Rating
FMVSS 302 and GB 8410 Class B compliant for automotive interior safety.
Odor & VOC Level
Grade 3 or lower low-odor rating meeting vehicle eco-standards.
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Key Features & Selling Points:
- Graduated Dual-Density Architecture: Combines a soft upper contact surface (28 to 35 ILD) with high-density support zones (40 to 65 ILD) for optimal posture stability and initial plush comfort.
- Firm Side Bolster Restraint: High-density side bolsters (50 to 55 kg/m3) restrict lateral body sliding during cornering, offering wraparound driving support.
- Anti-Sagging Durability: Delivers low compression permanent set (4% or lower) and high tear resistance (2.0 N/mm or higher) to withstand constant daily use without collapsing.
- Superior Shock Absorption: Reduces road vibration transmission to minimize lower back and leg numbness during long-distance trips.
- Automotive Interior Safety Certified: Meets FMVSS 302 and GB 8410 Class B flame retardancy standards with low-VOC Grade 3 or lower odor performance.
