Anti-Static Brush Plate

An Anti-Static Brush Plate is a grounded plate or strip with embedded conductive filaments that performs dry, quiet, particle-removal sweeps on electrostatic discharge (ESD)-sensitive surfaces. The plate is mounted to a machine, fixture, or handle; the filaments contact the part and provide a continuous electrical path back to ground through the base plate.

During operation the filaments wipe the surface in a controlled linear or rotary motion, removing lint, oxide particles, loose flux residue, polishing dust, and static-attracted debris. Because the fibers are conductive and the plate is grounded, charge does not accumulate on the wiped area, so the particles do not reattach after being dislodged.

This is not a scrubbing brush for wet cleaning, baked-on deposits, or heavy abrasion. It is a precision static-control cleaning tool for dry or lightly contaminated surfaces where discharge protection and particle removal must happen at the same time.

Working conditions such as line speed, stroke direction, and ambient humidity affect fiber wear and static performance. Include these in the project specification so the plate is built for the actual process.

• PCB and connector wiping stations where edge fingers, gold contacts, and card slots need dry, particle-free contact before testing or assembly.
• Flat-panel and optical film lines where moving webs accumulate static-attracted dust that recontaminates after ordinary brushing.
• Semiconductor and microelectronics handling areas on cassette edges, carrier surfaces, and inspection fixtures that touch wafers or bare dies.
• Terminal blocks, switch contacts, bus bars, and precision housings after machining, deburring, or polishing operations.
• Cleanroom bench-top wiping fixtures where a mounted brush plate gives repeatable contact and frees the operator from hand brushing.
• Packaging and final-assembly lines for ESD-sensitive devices where lint and fiber fallout cause rejects or field failures.

Start with the contact geometry. Measure the full width of the area that must be wiped and the clearance height above it. The plate width should cover the contact zone in one pass where possible, and the trim length must leave enough free fiber to flex without bottoming against the base plate.

Select the filament material from surface sensitivity and residue type. Conductive nylon is the softest option and generates the least fiber shedding; it is the usual choice for gold contacts, optical end faces, coated housings, and thin films. Carbon fiber is stiffer and dissipates static faster, but fine carbon fibers can break and shed under high mechanical loads. Metal fiber provides the most aggressive conductive contact and is only appropriate for hard, conductive parts that can tolerate more abrasive contact.

Set the trim length for the required force. Long trim bends more easily and applies less pressure; short trim is stiffer and removes more stubborn static-attracted dust. Start with the longest trim that still removes the residue, then shorten only if necessary.

Confirm the grounding path before installation. The plate terminal must connect to a verified equipment ground. If the plate is mounted on an anodized or coated insulator, expose a clean bonding point or add a ground strap. A floating plate has no static-dissipation function.

When a different tool is more suitable: use a wet-cleaning brush or swab if the contamination contains fluid, dried flux paste, or grease; use a high-force abrasive or wire brush for scale or heavy oxide; add an ionizer if static charge must be neutralized over a large area without physical contact. The anti-static brush plate is for dry, light-contact particle removal on accessible surfaces.

These plates are project-configured, not off-the-shelf. Send the critical dimensions, substrate material, residue type, line speed or stroke cycle, available ground connection, and ambient conditions. A drawing or sample part shortens the definition cycle.

• Overall plate width, length, thickness, and edge profile
• Hole pattern, slot positions, clamp surface, or custom mounting interface
• Filament material, fiber diameter, trim length, row spacing, and row count
• Base plate material and finish, including anodized aluminum or stainless steel
• Ground terminal type and location — ring lug, threaded stud, grounding bar, or integral lead
• Single or multiple filament rows, staggered patterns, or segmented conductive zones
• Optional handle, extension, or machine holder for fixed or manual operation
• Color, laser marking, or identification coding on the plate or packaging
• Cleanroom or bulk packaging, static-dissipative wrapping, or individual bagging

If your project needs surface-resistance readings, particle-shedding checks, material declarations, or third-party testing support, we can coordinate these as part of the customization scope.