Konlida Launches 4μm Foil, Graphite Foam & 200°C Conductive Sponge

High speed, low latency, and massive connectivity—5G is pushing electronics to new limits. But for engineers, two constraints remain unavoidable: stronger EMI interference and shrinking thermal space. Power density is rising, yet shielding and thermal materials cannot scale in thickness.

To address this contradiction, Konlida introduces three new materials designed for higher performance within tighter form factors:

• Ultra-thin metal foil (down to 4μm)
• Graphite composite conductive foam gasket
• High-temperature conductive sponge (up to 200°C)

The design logic is straightforward: maximize functionality per unit volume.

1. 4μm Ultra-Thin Metal Foil for High-Frequency Shielding

Miniaturized RF modules in 5G base stations and satellite communication systems demand:

• High shielding effectiveness at high frequencies
• Minimal space occupation

Konlida’s ultra-thin foil portfolio includes:

• Electrolytic nickel foil: ≥6μm
• Rolled nickel foil: ≥4μm
• Cu-Ni alloy foil: balanced conductivity and corrosion resistance
• Invar alloy foil (Fe-Ni): ultra-low thermal expansion

To put 4μm into perspective: standard A4 paper is ~100μm thick—this foil is over 20× thinner.

Despite its thickness, the material retains excellent electrical conductivity and magnetic permeability, enabling efficient EMI suppression in high-frequency bands while minimizing weight and volume.

Invar alloy foil adds a unique advantage: near-zero thermal expansion from 20°C to 200°C. This is critical in:

• Precision sensors
• Laser interferometers
• Aerospace navigation systems

For a deeper understanding of EMI shielding fundamentals, see:
https://www.konlidainc.com/article/shielding.html

2. Graphite Composite Conductive Foam Gasket: 3-in-1 Integration

The second innovation is a graphite composite conductive foam gasket, integrating:

• EMI shielding
• Thermal conduction
• Mechanical cushioning

Structure Overview

This replaces traditional multi-material stacks:

• Thermal pad
• Metal shield
• Cushion foam

Key Benefits

• Reduced BOM complexity
• Fewer assembly steps
• Lower total thickness

Performance Metrics

Target applications include:

• Optical modules
• Automotive ECUs
• High-performance chipsets

For selection strategies, refer to:
https://www.konlidainc.com/conductive.html

3. 200°C High-Temperature Conductive Sponge

The third release targets harsh environments in automotive and industrial systems.

The Limitation of Traditional Materials

Conventional conductive sponge materials typically operate below 120°C. While sufficient for consumer electronics, they fall short in:

• Engine compartments
• Turbocharger zones
• Outdoor telecom infrastructure

Konlida’s Breakthrough

Through polymer modification and plating optimization, Konlida extends:

• Continuous operating temperature: up to 200°C
• Surface resistance: <0.2Ω
• Shielding effectiveness: ≥80 dB
• Full XYZ-axis conductivity

This makes it a strong candidate for:

• EV powertrain systems
• Engine ECU grounding
• Outdoor 5G base station sealing

Compared to standard conductive foam gasket solutions, this material offers significantly improved thermal resilience without sacrificing electrical performance.

For application insights in EV systems, see:
https://www.konlidainc.com/article/bms.html

4. Integrated Manufacturing Behind the Materials

These products are not assembled from third-party components—they are built on a vertically integrated manufacturing platform, including:

• Ultra-thin conductive fabric (down to 0.016 mm)
• High-performance conductive PI films
• Precision metal foil processing
• In-house lamination, wrapping, and die-cutting

Supporting capabilities include:

• Pressure–resistance testing systems
• ANSYS simulation for structural and EMI optimization
• 40+ automated production lines

This end-to-end control enables:

• Rapid prototyping
• Consistent mass production
• Design-to-manufacturing integration

For a detailed look at manufacturing and quality control, see:
https://www.konlidainc.com/article/foam1.html

5. Conclusion

Konlida’s latest material portfolio reflects a clear industry direction:

• Thinner materials for compact electronics
• Multi-functional integration to reduce system complexity
• Higher thermal tolerance for demanding environments

From ultra-thin shielding foils to high-performance conductive sponge and integrated conductive foam gasket solutions, these materials provide engineers with more flexible and scalable design options.

All three products are now in mass production, with standard configurations available for rapid sampling and custom solutions tailored to specific applications.