Automotive Door Trim Seal (Co-Extruded)

Co-extruded automotive door trim seals combine multiple materials to improve weather resistance. The outer layer uses UV-resistant elastomers to protect against sun exposure. The inner layer prevents moisture absorption and resists freeze-thaw cycles. These seals protect against water, air leaks, and environmental damage, ensuring long-lasting performance.

Materialien

Outer layer made of UV-resistant EPDM or TPE, inner core of thermoplastic elastomer for durability.

Surface Finishes

Available in smooth, glossy, or textured finishes to meet specific automotive aesthetic requirements.

Compliance Standards

Conforms to ISO 9001, ISO 14001, TS 16949, and RoHS standards, ensuring high-quality production.

Cross-Section Area (A)

Cross-sectional area ranges from 15 to 40 mm² depending on design, ensuring optimal sealing.

Mass per Meter (m)

Mass ranges from 0.15 to 0.35 kg/m, varying by material density and seal geometry.

Product Description

Co-extruded seals reduce NVH by using materials that absorb sound and vibrations. The outer layer is soft and flexible, while the inner core contains viscoelastic material to dampen noise. This technology reduces road noise and prevents vibrations from causing wear or rattling, resulting in a quieter cabin and longer-lasting components.

Moment of Inertia (Ix / Iy)

X-axis: 5.6–15 mm⁴ (cross-section shape); Y-axis: 4.2–12 mm⁴ (geometry/material).

Section Modulus (Zx / Zy)

Values range from 1.5 to 4.5 mm³ depending on material distribution and section shape.

Radius of Gyration (ix / iy)

Range from 3.2 to 8.5 mm, varies with seal design, affecting overall flexibility and strength.

Max. Axial Load (Euler Buckling)

Capable of withstanding axial loads from 250 to 600 N, depending on material strength.

Max. Load at Slot (Shear Test)

Slot tests show load resistance between 200 to 450 N, ensuring robust attachment and strength.

Torsional Constant (J)

Torsional constant ranges from 2.0 to 6.5 mm⁴, indicating flexibility and resistance to twisting.

Max Torque (Torsional Load Limit)

Maximum torque capacity from 0.5 to 2.0 Nm, varying with seal geometry and material composition.

Elastic Deflection (100 N Load)

Deflection range from 0.4 to 1.5 mm under 100 N load, providing flexibility under pressure.

Dynamic Load Rating

Dynamic load rating varies from 250 to 800 N, ensuring long-term resistance to movement forces.

Compatibility Tolerance

Tolerance level of ±0.5 mm to ensure proper fitting within design and manufacturing requirements.

Machining Precision Grade

Precision grade between 6-8, ensuring high accuracy for consistent seal performance and fit.

Fatigue Life (Slot Edge)

Fatigue life ranges from 500,000 to 2 million cycles, indicating long-term durability under stress.

Thermal Expansion (ΔL @ ΔT=50°C)

Thermal expansion varies between 0.06 to 0.08 mm/m, accommodating temperature changes in automotive environments.

Slot Pull-Out Resistance

Resistance ranges from 100 to 350 N, preventing slippage and ensuring secure attachment over time.

Max Load Bearing at Corner Joint

Max load at corner joints ranges from 500 to 1200 N, ensuring strength under vehicle stress.

Technical Advantages

Co-extruded seals are built for durability. They withstand mechanical stress from repeated door movements, temperature changes, and environmental exposure. The multi-layer design provides enhanced abrasion resistance. These seals maintain their strength and tear resistance, ensuring a longer life cycle and fewer replacements.

Co-extruded seals provide precise tolerances, ensuring a tight and consistent fit. The multi-layer structure also allows for customization, with specific materials chosen based on hardness, flexibility, and sealing needs. This ensures that the seals perform well in various vehicle designs and environmental conditions.

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Industry Applications

Passenger Vehicle Doors

Provides effective sealing against water, air, and noise, ensuring tight closure for enhanced comfort and performance in passenger vehicles.

Electric Vehicles (EVs)

Co-extruded seals protect against moisture and dirt ingress, supporting the longevity and reliability of sensitive electronic components in EV doors.

Heavy-Duty Trucks

Offers enhanced weather resistance and durability to withstand high-stress environments, preventing damage from exposure to extreme conditions and heavy use.

Luxury Automotive Models

Ensures noise, vibration, and harshness (NVH) reduction by absorbing sound, maintaining a quiet interior for premium vehicle segments.

SUVs and Crossovers

Provides robust sealing performance in larger vehicle frames, preventing water leaks and improving thermal insulation in varying climates.

Commercial Vehicles

Seals for delivery and transport vehicles offer resilience against chemicals and physical wear, enhancing longevity in high-demand environments.

Thermal Stability and Thermal Cycling Resistance

Co-extruded seals are designed to perform under extreme temperature changes. The multi-layer structure helps manage thermal expansion and contraction. The seals maintain their integrity even in high temperatures or freezing conditions. This ensures consistent sealing performance, regardless of fluctuating temperatures.

The materials in co-extruded seals are compatible with various manufacturing processes. These include injection molding, bonding, and assembly. Co-extrusion allows precise material placement for better adhesion and compression. This results in faster, more reliable assembly and improved production efficiency.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How do the material layers in co-extruded seals enhance resistance to extreme temperature variations in automotive applications?

The outer layer of co-extruded seals is made from UV-resistant elastomers, while the inner core uses thermoplastic materials, providing better thermal expansion management. This multi-layer construction ensures the seal maintains its integrity across a wide temperature range, from extreme heat to freezing cold, without compromising its sealing function.

What specific properties of co-extruded door trim seals contribute to their long-term durability under repeated mechanical stress from door closures?

The multi-layer structure improves resistance to abrasion, wear, and tear from repetitive motion. The outer layer is designed for flexibility, while the inner core enhances tensile strength and tear resistance, making the seal durable enough to withstand repeated stress from door movements over the vehicle’s lifespan.

How does the co-extrusion process optimize the seal’s resistance to chemical exposure in automotive environments

Co-extruded seals use different materials for the inner and outer layers. The outer layer is resistant to oils, fuels, and road salts, while the inner layer can be engineered to resist specific automotive chemicals. This tailored design provides superior protection against chemical degradation, ensuring the seal remains effective despite exposure to harsh substances.

What role does the viscoelastic material in the core of co-extruded seals play in reducing noise and vibrations in automotive applications?

The viscoelastic material in the core acts as a damping agent, absorbing vibrations and reducing noise from external sources and door movements. This material helps minimize NVH (Noise, Vibration, and Harshness) issues, contributing to a quieter and more comfortable cabin environment for the vehicle occupants.

How does the precision fit of co-extruded seals improve sealing efficiency and prevent water or air leaks in vehicle doors?

Co-extrusion allows for precise control over the dimensions of the seal, ensuring a tight and consistent fit along the door frame. The multi-material construction creates an effective compression seal that prevents air and water from entering the vehicle, providing a reliable barrier against leaks and ensuring long-term sealing efficiency.

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LOCATIONS

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Automotive Door Trim Seal (Co-Extruded)

Materialien

Surface Finishes

Compliance Standards

Cross-Section Area (A)

Mass per Meter (m)

Product Description

Moment of Inertia (Ix / Iy)

Section Modulus (Zx / Zy)

Radius of Gyration (ix / iy)

Max. Axial Load (Euler Buckling)

Max. Load at Slot (Shear Test)

Torsional Constant (J)

Max Torque (Torsional Load Limit)

Elastic Deflection (100 N Load)

Dynamic Load Rating

Compatibility Tolerance

Machining Precision Grade

Fatigue Life (Slot Edge)

Thermal Expansion (ΔL @ ΔT=50°C)

Slot Pull-Out Resistance

Max Load Bearing at Corner Joint

Technical Advantages

Let's Get Started

Industry Applications

Thermal Stability and Thermal Cycling Resistance

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Automotive Door Trim Seal (Co-Extruded)

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Automotive Door Trim Seal (Co-Extruded)

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