Plain Weave Fabric Over Foam EMI Gaskets

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plain weave fabric over foam emi gaskets

Plain Weave Fabric Over Foam EMI Gaskets

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Plain weave fabric over foam (FOF) gaskets are the most widely used solution for EMI shielding in electronic assemblies. Constructed with a smooth, copper-nickel plated polyester fabric wrapped around a soft polyurethane (PU) foam core, these EMI shielding gaskets provide excellent Z-axis conductivity and low compression force. 

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As the default choice for most EMI applications, plain weave fabric over foam gaskets offer the perfect balance of electrical performance and mechanical softness. The smooth conductive fabric cladding minimizes contact resistance by maximizing the surface area touching the substrate. This ensures a highly efficient grounding path, even under low compression. (Similar product: Grid Weave Fabric Over Foam EMI Gaskets >>)

Features of Fabric Over Foam EMI Gaskets (Plain Weave)

  • Maximum Contact Area: The smooth plain weave structure provides uniform contact with the mating surface, ensuring ultra-low surface resistance (<0.05 Ω/sq).
  • Reliable Shielding Performance: Delivers consistent attenuation (≥ 75 dB) across a broad frequency spectrum, effectively protecting sensitive electronics from electromagnetic interference.
  • Low Closure Force: The soft, resilient PU foam core compresses easily, sealing gaps without exerting stress on delicate plastic clips or screens.
  • High Durability: Tested to withstand over 1,000,000 abrasion cycles, ensuring long-term mechanical reliability.
  • Cost-Effective: The standard plain weave construction offers an economical solution for high-volume manufacturing without sacrificing performance.

TOPKING offers high-performance Fabric Over Foam gaskets featuring superior corrosion and oxidation resistance, ideal for isolating high-frequency EMI in aerospace, medical, and consumer electronics (LCDs, drones, smartphones). Beyond standard profiles, we provide comprehensive custom die-cutting services. We can convert gaskets into precise I/O shields, rectangular pads, or panel seals, supplied with or without conductive adhesive to meet your specific assembly requirements.

Item
Value
Outer Material
Conductive Fabric (Plain Weave)
Core Material
Open Cell Polyurethane (PU) Foam
Plating
Copper / Nickel (Cu/Ni)
Color
Metallic Silver Gray
Adhesive
Conductive Acrylic PSA
Shielding Effectiveness
≥ 75 dB
Surface Resistivity
≤ 0.05 Ω/sq
Conductivity (Z-Direction)
< 0.05 Ω
Abrasion Test
> 1,000,000
Salt Spray (5%, 24H, 35°C)
Grade ≥ 4
Metal Adhesion
Grade ≥ 4
Tensile Strength (Longitude)
≥ 67 lbf
Tensile Strength (Latitude)
≥ 52 lbf

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To provide you with an accurate and timely quotation, please offer more information as much as possible:

Tape Specifications: the dimensions (such as width, thickness and length), estimated quantity and other specific requirements.

Applications Details: the specific application or industry for which the tape will be used, which helps us recommend the most suitable product for your needs.

for Die Cutting Parts: the dimensions, material, and your drawings with details, you can send the drawing to info@topkingtapes.com

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