Inside the 300mm HEPA Filter Paper Pleating Production Line

If you make motorcycle intake elements for OEM or aftermarket, you’ve probably heard whispers about the new generation of pleating lines. I spent a week on the floor with one—this bike air filter making machine—and, to be honest, it’s the first compact line I’ve seen that shifts from HEPA media to cellulose-polyester blends without drama. The headline: pleat height from 20–300 mm, no roller change-outs, just a smart speed delta between the marking roller and carry-over pin roller. It sounds small; it’s not.

What’s driving the trend?

Two things: tighter emissions targets and riders asking for longer service intervals. Dealers tell me premium foam still sells, but pleated media with nanofiber skins is inching ahead—better dust holding for off-road, lower pressure drop for street. A flexible bike air filter making machine that cuts clean, pleats evenly, and stacks reliably is becoming a competitive edge, especially for mid-size factories in Asia and Eastern Europe.

Process flow at a glance

Unwinding & tension control: keeps media flat before slitting.
Imported slitting unit: flat end face, no burrs—less edge shedding in ISO 5011 tests.
Marking/bead line: hot-melt or cold mark as needed, pitch matched to pleat height.
Carry-over pin roller: the clever bit—speed differential sets pleat height (20–300 mm) without swapping rollers.
Pleating & forming: steady apex, minimal spring-back on multi-layer HEPA.
Cooling/curing, counting & stacking: neat bundles, lower scrap.

Product specifications (typical)

Model	300mm HEPA Filter Paper Pleating Production Line
Max media width	≈300 mm
Pleat height range	20–300 mm (no roller change)
Line speed	≈5–25 m/min, adjustable
Slitting accuracy	±0.2 mm (real-world may vary)
Bead line pitch	≈10–60 mm
Power / Air	≈12–18 kW; 0.6–0.8 MPa

Materials, applications, and testing

Compatible with HEPA/ULPA glass fiber, melt-blown composites, cellulose-polyester blends, PTFE-laminated media, and scrim-supported nanofiber layers. For bikes: intake panel and cone filters, snorkel prefilters, and even cabin filters on touring models. We validated against ISO 5011 (engine intake), EN 1822 (HEPA), and ISO 16890 (general air); plus IATF 16949 expectations for traceability.

Quick data from a customer pilot, dusty-road profile: initial pressure drop ≈160 Pa at 240 m³/h (panel, 35 mm pleat), dust holding ≈155 g to 200% Δp, efficiency ≥99% @ 2–3 μm (media dependent). Service life? Shops report 12–18k km for street use, 5–8k km off-road—very region-specific, I’ll admit.

Why this line works for bike filters

Imported slitters: cleaner edges, less fiber release under ISO 5011 loading.
Fast SKU changeover: ride from 25 mm to 80 mm pleats without retooling—just tweak speeds.
Consistent bead lines: stabilizes pleats in high-vibration housings.
Compact footprint, sane energy draw, honest uptime.

Vendor snapshot (indicative)

Vendor	Price	Pleat height	Automation	Lead time	After-sales (Asia)
Anya 300mm line	Mid $	20–300 mm	Auto marking, counting, stacking	≈30–45 days	Factory + remote
Local retrofitted line	Low $	20–120 mm	Semi-auto	≈15–25 days	Limited
European brand	High $$$	10–400 mm	Full servo	≈90–120 days	Regional hubs

Customization, support, and real-world notes

Options: extra unwind for dual-layer feeds, anti-static kits, extended bead pitch, and recipe storage via PLC/HMI. Factory address: No.580 Gongnong Road, Shijiazhuang City 050000, Hebei, P.R. China. Many customers say the training is refreshingly practical; I’d agree—no mysterious black boxes.

Case snippets: a Pune workshop switched from foam blocks to pleated panels and cut scrap 18%. A Vietnam OEM added nanofiber media for ADV bikes and hit longer service intervals. A racing outfit in Italy—surprisingly—uses the same bike air filter making machine for pre-season batch runs, then swaps media for dyno tests.

Final thought: the real magic here isn’t just the clean slitting—though that matters—it’s the speed-coupled pleat control. It keeps your SKUs nimble and your test data consistent. Actually, that’s what lets you say yes to more custom airboxes without blowing up your setup time.