When electromagnetic energy leaks through a seam on a metal enclosure, a connector edge, or a cable harness bonding point, it can show up as noise on nearby circuits or cause EMC pre-compliance testing to fail intermittently. A common frustration for engineers is that enclosure fasteners are torqued correctly, yet noise still comes and goes — usually because the grounding path itself is not continuous.
Lixing Compound Materials’ LX-DDB Series Conductive Cloth Tape uses a 260T high-density plain-weave conductive cloth backing with a conductive acrylic adhesive. It can be cut and applied directly onto enclosure seams, connector housings, or harness bonding points as a trimmable, reworkable shielding-support material.
Material Mechanism: How a Conductive Fabric Sustains a Continuous Conduction Path
For a conductive cloth tape to support shielding, the fabric being conductive is not enough on its own — the adhesive layer must also provide both mechanical bonding and electrical contact, so a low-impedance, continuous conduction path forms between the mounting surface and the conductive cloth, rather than simply stacking an insulating tape onto a metal part. The product page‘s published surface resistance of ≤ 100 mΩ describes the resistance of that conduction path itself, not a shielding-effectiveness (dB) value.
Engineering Formula: Absorption Loss and Skin Depth
EMC engineering commonly uses Schelkunoff’s shielding-effectiveness decomposition, which splits total shielding effectiveness into reflection loss, absorption loss, and a multiple-reflection correction term. The absorption-loss term can be written in plain text as:
A(dB) = 8.7 x t / delta; delta = 1 / sqrt(pi x f x mu0 x mu_r x sigma)
Here t is shield thickness, delta is skin depth (same unit as t), f is the electromagnetic wave frequency (Hz), mu0 is the permeability of free space, mu_r is the material’s relative permeability, and sigma is the material’s electrical conductivity (S/m). This model applies to far-field plane-wave incidence on a homogeneous, effectively continuous conductive shield, and comes from the LearnEMC Plane Wave Shielding Effectiveness Calculator (Schelkunoff absorption-loss theory). It only illustrates the engineering relationship between thickness, conductivity, and absorption loss — it is not a tested shielding-effectiveness figure for this product. The product page does not publish an independent shielding-effectiveness (dB) test result, and the model excludes leakage from seams, apertures, or bonding contact resistance; actual performance should still be verified against the installation and frequency band in use.
Core Technical Points
- Backing is a 260T high-density plain-weave conductive cloth with a continuous conductive fabric structure.
- Conductive acrylic adhesive provides ≥ 1.0 kg/in adhesion and ≥ 1.3 kgf/in (180°) peel strength (PSTC-101).
- Surface resistance ≤ 100 mΩ, useful as a reference for low-impedance grounding at enclosure seams or bonding points.
- Short-term temperature resistance of 120°C (EN344) and long-term operating temperature of 80°C suit typical electronics enclosures.
- Thickness is customizable to match different seam widths and assembly tolerances.
Industrial Applications
Typical uses include enclosure-seam shielding, electrostatic discharge protection, PCB grounding bonds, and cable-harness wrapping, serving as a localized repair or reinforcement for the conduction path on metal shielding cans, connector housings, or control enclosures.
Selection Reminders
Before selecting this tape, confirm that the grounding path stays continuous across the actual bonding interface, and check that the 80°C long-term and 120°C short-term temperature limits suit the operating environment. Adhesion and customizable thickness options should also be weighed against seam width and rework needs; actual shielding performance should still be measured under the intended frequency band and installation conditions.
Conductive cloth tape can serve as a practical aid at enclosure seams and harness bonding points, but overall shielding performance still depends on the grounding and installation design as a whole, not on a single material spec. For more information, see the Lixing Compound Materials LX-DDB Series product page.
Tags: #ConductiveClothTape #EMIShielding #EMC #GroundingDesign #LixingCompositeMaterials
