Corrugated Filament

Corrugated Filament is ordinary PA, PBT or PP monofilament given a crimp or texture along its length. The crimp adds bulk and recovery at the same diameter, which is why deep-crimp fill is used on rollers that must hold contact over an uneven surface.

Corrugated Filament is used in custom cleaning brushes for dense rollers, washing brushes and liquid applicators where crimp increases face fullness and fluid carrying.

Compare Corrugated Filament with Straight filament, flagged filament, textured filament, hollow or shaped profile. Change material when wet stiffness, temperature, chemical resistance, conductivity, particle shedding, or surface marking becomes the limiting factor.

Corrugated Filament is not a material hardness class; the crimp changes packing and contact while base polymer and diameter control bending force. Use finer filament and longer trim for conformable contact; use coarser filament, shorter trim, or higher density for stronger displacement or cutting.

The part people get wrong: the number that decides scrubbing pressure is diameter over trim length, not the grade name. Two brushes in this material can behave nothing alike.

Corrugated Filament takes up 0.1–1.0% (24 h; industry reference range).

Water resistance follows the base polymer, while the crimped profile increases liquid flow through the fill.

What this means for your application: it barely absorbs water, so dry and wet contact pressure are effectively the same and the brush behaves alike on both duties.

A practical check: soak a sample for an hour and re-measure the trim. If it has moved enough to change the contact band, the grade is wrong for the duty.

Temperature capability follows the base polymer; corrugation changes geometry, not the polymer service-temperature limit.

Where it stops working: A permanent bend under load means the answer is a higher-temperature filament family, not a heavier trim.

The usable limit also moves with diameter, trim and contact pressure. A fine filament under light load tolerates more than a thick one under heavy scrubbing.

Exactly the base-polymer and additive compatibility.

The same cleaner can be harmless or destructive depending on how strong it is, how hot it runs and how long it sits. Quote the concentration and the dwell time, not just the product name.

Before you commit to a quantity: Specify the exact Corrugated Filament grade or alloy, filament or profile size, color, straight or crimped form, working temperature, wet or dry use, chemical exposure, surface finish, and any required material documentation.

About 0.15 mm. Below that the filament turns fragile and breaks under ordinary contact pressure, so 0.15–1.50 mm is the working range.

Free trim runs 3–300 mm, and the two interact: a finer filament needs a shorter trim to keep useful stiffness, while a thicker one carries a longer trim and still lands pressure on the tip.

Split the range by duty: roughly 0.15–0.49 mm for light wiping, dusting and surfaces that mark easily, and 0.49–1.50 mm where residue is packed on and point pressure matters more than surface risk.

Tip treatments available on this filament: end rounding, tapered-tip grinding, silicone-oil coating, anti-static coating and antibacterial coating.

In practical brush terms: reaching deep into a bore or crevice is a diameter problem before it is a length problem. A thicker filament on a moderate trim pushes further in before the tips fold over.

Dense rollers, washing brushes and liquid applicators where crimp increases face fullness and fluid carrying.

The cleaning work it is specified for most often:

• Industrial Machine Cleaning
• Dust Removal
• Brick, Tile & Building Material Machine Brush Use
• Laboratory Tube Cleaning
• Household Dish, Teapot & Kitchen Detail Cleaning
• Carpet Machine Cleaning

Brush types built with this fill:

• Custom Handheld Detail Brushes
• Custom Tube & Pipe Bore Brushes
• Custom Roller and Conveyor Brushes
• Custom Polishing Buffing Wheels

If the sample comes back rejected: Cannot be selected without the underlying polymer, diameter and crimp specification.

A usable specification carries the construction, the filament diameter and free trim, the density and contact setting, and the service conditions: wet or dry, temperature, and what the cleaner actually is.

The mistakes that most often send a sample back:

• Selecting Corrugated Filament from the material name alone without setting filament diameter, trim length, and density
• Using dry stiffness to predict wet behavior without checking moisture absorption or liquid exposure
• Ignoring trapped abrasive particles, chemical concentration, temperature, or contact motion when assessing surface risk

Reference standards behind the figures on this page: ISO 527-1:2019; ASTM D638; ISO 62:2008; ASTM D570-22; ISO 868:2003; ASTM D2240-15(2021); ISO 4892-3:2024; ASTM G154-23; UL 94; ISO 13061-1; ASTM D143.

Source: Perlon — Synthetic Brush Filaments. Public manufacturer or material data supports the material form and performance direction used on this page. Functional/profile labels do not replace grade-specific thermal data. Functional/profile labels do not replace grade-specific thermal data.