Anti-Static Strip Brush

An anti-static strip brush is a linear strip of conductive or static-dissipative filaments crimped into a metal or plastic channel backing. It mounts into a straight channel, aluminum carrier, or angle holder fixed to the machine frame, and that holder is connected to machine ground. In operation, the filament tips contact a moving web, sheet, or conveyor surface and provide a path for the static charge to leave the product and pass to ground.

This is a passive, contact-based static control device. It works only where the filament tips actually touch the product, so the mounting position and compression setting are part of the installation. The brush is normally placed where the charge or dust problem matters: before a print or coating unit, after slitting or rewinding, at a sheet exit, or along a conveyor transition where parts need to be discharged.

The same contact that bleeds charge also mechanically clears loose, dry particles from the surface. The brush is not intended for removing oil, adhesive, tacky residues, or scale, and it does not clean by itself — released dust still needs an extraction system or downstream cleaning step.

Standard strip lengths run from 100 mm to 3,000 mm. Wider lines can be covered with joined sections, but long unsupported lengths usually need intermediate support to keep the contact line straight.

The following values can be adjusted to the machine and substrate. The dimensions below make sense when the strip is mounted: the nominal free trim height is not the installed height, because 5–25% of the trim is compressed in service.

• Web converting and coating lines: film, paper, foil, label stock, and nonwoven webs before print, coating, laminating, or slitting stations.
• Printing and packaging equipment: sheet-fed presses, carton lines, shrink film, and package form-fill-seal paths where static causes misfeeds, sticking, or dust pickup.
• Sheet handling and panel lines: plastic sheets, glass panels, PCB panels, and thin boards where static holds dust and causes transport or stacking problems.
• Conveyor transitions and machine openings: grounded contact lines along rollers, belts, product transfer points, and openings where passing parts need to be discharged.
• Pre-inspection and cleanroom entry points: dry contamination release on parts entering inspection, painting, coating, or packaging areas.

In each case the brush should be positioned so the filaments contact the surface before sensitive processes or after charge-generating operations. The mounting and grounding are as important as the filament choice.

Start with the charge behavior and the installation, then work down to filament detail.

1. Set the resistance target. Determine how fast the charge must decay and whether the product can tolerate a rapid discharge. If the web carries a strong charge and the product is not sensitive, lower-resistance conductive nylon (10³–10⁵ Ω class) usually gives the fastest decay. If the product or nearby electronics require a controlled discharge, choose a static-dissipative fill in the 10⁶–10⁹ Ω range.
2. Measure the mounting gap and clearance. Find the distance from the holder to the product at the contact point, including any variation in web position, sheet thickness, or conveyor sag. The free trim height should be long enough to compress 5–15% in the normal wiping position without bottoming or buckling.
3. Match filament diameter to the substrate. Fine filaments of roughly 0.10–0.25 mm suit thin films, foils, and coated surfaces; mid-range 0.25–0.50 mm handles paper, carton, and lightweight sheets; coarser 0.50–1.27 mm filament provides more stiffness and wear life for thicker webs, nonwovens, or higher-load contact.
4. Confirm the channel and holder interface. Measure the existing groove width and check what backing material the holder accepts. The strip back should slide or bolt in without play, and the grounding terminal must make clean metal-to-metal contact.
5. Set compression and verify. At 5–10% compression the brush is a light wiping contact; at 10–15% it is a working dust-removal contact; at 15–25% it becomes a firmer sealing or high-contact setting. Over-compression folds the filaments, widens the contact patch, and shortens filament life.

Consider a different tool when the contamination is wet, oily, tacky, or bonded to the surface — an anti-static strip brush removes dry loose particles and released dust, not deposits that require solvent or mechanical force. If the charge is generated after the brush contact point or the surface cannot be touched, use an ionizing bar or combine the two. For very abrasive or heavy debris, a conventional PBT, nylon, or wire strip brush may be a better wear choice. For widths above 3,000 mm, split the run into supported sections to keep the tips in line.

Yes. The strip is usually built to the line, not picked from a shelf. Provide the web or part width, substrate material and thickness, line speed, mounting clearance, holder groove dimensions, grounding point, and the required resistance or charge level. A photo or CAD sketch of the mounting area helps avoid interfacing errors.

We can adjust:

• Length and sections: 100–3,000 mm per section, butt joints for wider runs, notched or tapered ends.
• Trim height and filament diameter: matched to the gap, substrate stiffness, and contact requirement.
• Fill and resistance: conductive nylon, anti-static filament, or combined fill; resistance class selected between 10³ Ω and 10⁹ Ω.
• Backing channel: galvanized steel, stainless steel, or aluminum; width and profile matched to your holder; pre-punched mounting holes or custom notches.
• Carrier / holder: straight channel, angle holder, aluminum extrusion, or custom bracket with a specified ground stud or cable position.
• Color, marking, and packaging: standard black or custom color for line identification, batch labels, coil or cut-length packing, and project-specific packaging.

When the project calls for material declarations, inspection records, or third-party testing, we can support those requirements through the customization process instead of offering them as off-the-shelf properties.