📍 Anhui Province, China 📞 +86 155 5177 6915
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Factory Direct

Toothed & Serrated Blades Manufacturer

Serrated, zig-zag and perforating blades for easy-open packaging, tear lines, film perforation and non-woven cutting. Tooth geometry ground to your pattern, with pitch and depth verified against your drawing before production.

Toothed & Serrated Blades — serrated blades, factory direct

Key features

  • Zig-zag, saw-tooth, wave and micro-perforation patterns
  • Tooth pitch from 0.8 mm, held within ±0.02 mm
  • No burr on the tear line — this is what decides whether the pack opens cleanly
  • Hardened and tempered for repeated perforation at line speed
  • Sample-first policy: we cut your film before shipping

Specifications

MaterialSKD-11, Cr12MoV, HSS M2, 440C stainless
HardnessHRC 56–62
Length30 – 1,500 mm
Width8 – 80 mm
Thickness0.5 – 6 mm
Tooth pitch0.8 – 12 mm (custom)
Tooth depth0.3 – 5 mm
ToleranceTooth pitch ±0.02 mm; overall length ±0.05 mm
ProfilesZig-zag, saw-tooth, wave, scalloped, micro-perforation
MOQ5 pcs

Applications

Easy-open food packaging

Tear notches and rip lines on snack and confectionery packs.

Pharmaceutical sachets

Tamper-evident perforation and opening aids.

Tissue & hygiene

Perforation between sheets on roll products.

Non-woven & textile

Clean cutting of hygiene products and technical textiles.

Blade types we make in this line

A partial list — if you do not see your blade, send us the drawing or a photo and we will confirm.

Zigzag sealing toothed bladesPerforating / dashed-line knivesT-profile toothed knivesCrescent-tooth bladesSerrated circular knivesPoint-perforation bladesDouble-ground toothed bladesWave-tooth knives

Fitting your machine, and buying a replacement

Toothed and serrated blades are ground tooth by tooth on a profile grinder, so the tooth pitch, height and rake angle can be changed without a new tool. We match the tooth form from the old blade or from a sample of the material being cut.

Also called: toothed knives · serrated circular knife · perforating blades · zigzag blades · toothed cutting blade.

Materials used for this blade

Cr12MoV
HRC 58–62 · High

Widely used, well understood grade. Good balance of cost and life.

Read the full grade guide
SKD-11 (D2)
HRC 60–64 · Very high

Longer life than Cr12MoV at higher cost. The default upgrade.

Read the full grade guide
HSS M2 / M42
HRC 62–66 · Very high

M42 (cobalt) for heat resistance at very high line speeds.

Read the full grade guide
440C Stainless
HRC 54–58 · Medium-high

Rust-free. Required wherever blades see water and cleaning.

Read the full grade guide

Frequently asked questions

In almost every case, either the tooth tips are too sharp for the film gauge, or the anvil is too hard. A tooth that is too sharp cuts through instead of perforating. We grind tooth tips with a controlled radius — typically 0.1–0.3 mm — matched to your film thickness. Send us a sample of the film and we will recommend the radius.
If you send a sample blade or a clear photo with the tooth count and pitch, yes. We produce to reverse-engineered geometry and will send a profile drawing for your approval before cutting steel. This protects both sides: you know exactly what you are getting, and we build exactly what you approved.
Yes — zig-zag tear blades for paper and composite bags are among our most common profiles, typically in SKD-11 at HRC 58–60. We also supply the matching anvil if you are rebuilding a used machine.
0.8 mm pitch is our standard floor. Below that, tooth strength drops sharply and the blade becomes fragile in handling. If your application needs finer perforation, the more reliable route is laser or rotary die cutting rather than a solid blade — we will tell you honestly if that is the case.
Yes. Tell us the tooth pitch you want — or send a piece of the material and we will recommend one. Tooth form is what decides whether the cut tears cleanly or drags.
Teeth are the thinnest part of the blade. Breaking means the tooth is taking load it was not designed for: too much feed, too little support behind the material, or a hardness that is too high for the tooth profile.

Not sure which blade fits?

Send a photo of the blade you use now with a ruler next to it. We will tell you the grade and the edge angle.

Ask us