Shielding Knowledge

How to Choose Conductive Fabric for an EMI Shielding Project

A buyer-oriented selection checklist covering frequency, shielding target, width, thickness, surface resistance, flexibility, adhesive backing and conversion needs.

The answers below are intended for early material selection and project discussion. Real-world shielding should be validated in the finished assembly under the intended test conditions.

What information should I provide before selecting a conductive fabric?

Provide the application, frequency range, target shielding level, required width and thickness, installation method, environmental conditions, expected quantity and whether the material will be cut, laminated, sewn, wrapped or adhesive-backed.

Should I choose the highest shielding fabric available?

Not automatically. The most suitable material balances electrical performance with flexibility, durability, corrosion resistance, processability, width, cost and installation requirements.

Why does width matter?

Using a wider roll can reduce seams and overlap points. Fewer seams can simplify fabrication and may improve shielding continuity in large panels, curtains or enclosure liners.

When should I consider self-adhesive fabric?

Self-adhesive fabric is useful when fast positioning and lamination are required. Confirm whether the adhesive itself must be conductive and whether the bond, temperature range and substrate are compatible with the application.

Quick Material Shortlist by Project Need

Examples below refer to OneThinktec catalog constructions. They are starting points for evaluation, not guaranteed application approvals.

Project needStarting modelsWhat to check
General-purpose flexible liningX006061.1 m plain weave; evaluate for sewing or converting.
Ripstop weave optionX007211.1 m, 260T grid reinforcement; validate tear strength for the project.
Fewer seams / wider rollX00789 / X00790Plain weave in 1.38 m / 1.5 m widths.
Diamond weave in wider formatsX00783 / X00785Diamond-grid fabric in 1.38 m / 1.5 m widths.
Thicker fabric optionX007970.12 mm heavy-duty plain weave; confirm bend and fatigue needs.
Black surface finishX00760 / X00761Single-sided and double-sided black finish options.
Adhesive-backed convertingX00748 / X00792 / X00793Plain / ripstop / diamond self-adhesive formats; confirm adhesion and electrical continuity.
Rose-gold appearanceX00786 / X00806Decorative finish options for appropriate finished products.

Compare representative catalog specifications →

230T, 260T or 300T: Is Higher Always Better?

No. T designations describe fabric construction in the catalog; a higher number does not automatically mean stronger shielding, greater tear resistance or longer life. Compare actual shielding data at your frequency, resistance, coating quality and mechanical tests.

Can the Same Fabric Be Used for Clothing, Gaskets and Faraday Bags?

Not without additional evaluation. Garments require comfort, care and skin-contact considerations; gaskets require reliable electrical contact and compression behavior; bags require appropriate seams and closures. Validate the finished product for its intended use.

Engineering note: Shielding data is meaningful only with the relevant frequency, test method and sample or assembly configuration. Do not compare headline dB values without those conditions.