Home Products Film Slitting Blade

Film Slitting Blades

Film slitting blades for converting lines—built to reduce edge dust, stabilize tracking, and keep cut quality consistent across long runs.

Film Slitting Blades We Manufacture

YISHI Machinery manufactures industrial film slitting blades for high-speed web converting, trimming, and rewinding lines. These blades are engineered for processors handling BOPP, PET, LDPE, HDPE, PVC, and multi-layer laminates on slitter rewinders from Kampf, Atlas, Goebel, and similar OEMs. Standard material grades include D2 (Cr12MoV) at HRC 58–62, M2 high-speed steel at HRC 62–65, and sub-micrograin tungsten carbide for abrasive films. Typical dimensional ranges cover outer diameters from 60 mm to 300 mm, thicknesses from 0.3 mm to 5.0 mm, and bore tolerances held to H7. Every blade is vacuum heat-treated and multi-stage cryogenically stabilised to control edge retention and burr formation across production runs exceeding 100,000 linear metres. For packaging lines that require a serrated tear edge rather than a clean slit, see our zig zag cutting blade range — both blade types are frequently specified together on flexible film converting lines.

Vacuum Heat Treatment with Cryogenic Stabilisation
Blades undergo vacuum quenching followed by deep cryogenic treatment at −120 °C to transform retained austenite, delivering a consistent HRC 58–65 across the cutting edge and minimising micro-chipping.
Sub-Micrograin Tungsten Carbide Grades
For abrasive films such as metalised PET or filled polymers, we supply blades in WC-Co grades with grain sizes below 0.8 µm, achieving hardness above 1,600 HV30 and extending regrind intervals by 3–5× versus tool steel.
Tight Thickness and Parallelism Tolerances
Standard thickness tolerance is ±0.005 mm for blades up to 2.0 mm thick, with parallelism held within 0.003 mm. This reduces lateral runout in gang-slitting setups and improves slit-edge quality.
Custom Edge Geometries
Available edge profiles include single-bevel, double-bevel, dished (concave), and razor-sharp. Bevel angles are ground from 15° to 45° depending on film gauge and slitting method, with edge radii as low as 0.5 µm for thin-gauge films.
Surface Finish for Low-Friction Cutting
Blade faces are finished to Ra 0.2 µm or better, reducing adhesive build-up from coatings and primers. Optional TiN, CrN, or DLC coatings are available for high-volume lines running pressure-sensitive adhesives.
OEM-Compatible Bore and Keyway Configurations
Bores are ground to H7 tolerance with standard diameters from 20 mm to 100 mm. Keyways, pin holes, and drive slots are machined to match OEM specifications for direct drop-in replacement on existing arbors.

Take a Closer Look

Flexible Packaging Film Slitting
Label and PSA Laminate Converting
Battery Separator Film Processing
Agricultural and Stretch Film Rewinding
Metallised and Coated Film Slitting

Flexible Packaging Film Slitting
Top and bottom slitter blades for BOPP, CPP, and PET packaging films on turret slitter rewinders. Blades are specified for clean cuts at speeds above 800 m/min without dust generation.
Label and PSA Laminate Converting
Shear-cut and crush-cut blades for pressure-sensitive label stock, silicone release liners, and adhesive tapes. DLC-coated edges prevent adhesive transfer and extend cleaning cycles.
Battery Separator Film Processing
Ultra-thin ceramic and PE separator films for lithium-ion batteries require carbide blades with edge radii below 1 µm to avoid micro-tears that compromise dielectric strength.
Agricultural and Stretch Film Rewinding
Blades in D2 or M2 for slitting LLDPE stretch film and silage wrap at widths from 250 mm to 1,500 mm. Cryogenic treatment reduces edge deformation under high-wrap-tension conditions.
Metallised and Coated Film Slitting
Tungsten carbide slitter blades for metallised BOPP and AlOx-coated barrier films. Hardness above 1,600 HV30 resists abrasive wear from metal oxide layers.

Technical Specifications

Dimensions	OD 60–300 mm, ID 20–100 mm, thickness 0.3–5.0 mm; custom diameters and multi-stepped profiles available
Materials	D2 (Cr12MoV), M2 (SKH51), HSS, tungsten carbide (WC-Co sub-micrograin), H13 (for hot-knife applications)
Hardness	HRC 58–65 for tool steels; 1,600–1,800 HV30 for tungsten carbide
Tolerances	Thickness ±0.005 mm, parallelism 0.003 mm, bore H7, OD ±0.02 mm
Surface Finish	Ra 0.2 µm standard; Ra 0.05 µm achievable with superfinishing; optional PVD coatings
Customisation	Accept drawings, OEM part numbers, or sample blades for reverse engineering; specify OD, ID, thickness, bevel angle, keyway dimensions, and coating requirements

Why Choose Yishi

YISHI Machinery supplies film slitting blades with documented heat-treatment batch records and dimensional inspection reports as standard. Our in-house vacuum furnaces and CNC grinding centres maintain process control from raw bar stock to finished edge. We stock D2 and M2 blanks for common diameters, enabling lead times of 15–20 working days for standard profiles. For carbide blades, we use ISO-grade K10–K30 substrates with cobalt content adjusted to the film's abrasiveness. Every blade is inspected for runout, hardness, and edge condition before shipment. We support trial orders with no minimum quantity on standard sizes and provide technical recommendations based on your film type, line speed, and slitting method.

Get a Quote

Frequently Asked Questions

What steel grade is best for slitting abrasive metalised films?

Sub-micrograin tungsten carbide (WC-Co) with grain size below 0.8 µm is recommended for metalised BOPP, AlOx-coated PET, and other abrasive films. It achieves hardness above 1,600 HV30 and typically lasts 3–5 times longer than D2 or M2 tool steel between regrinds. We can advise on cobalt content based on your specific film structure.
Do you manufacture blades to fit specific slitter rewinder brands?

Yes. We produce blades compatible with Kampf, Atlas, Goebel, Dusenbery, and other major OEM slitter rewinders. Provide the machine model, arbor diameter, and existing blade dimensions, or send a drawing/sample, and we will match the bore, keyway, and profile exactly.
What is the typical lead time for custom film slitting blades?

Standard D2 or M2 blades in common diameters (OD 100–200 mm) ship within 15–20 working days. Carbide blades and custom profiles may require 25–35 working days. We also maintain a limited stock of blank blades for emergency orders; contact us for current availability.
How do I specify the correct bevel angle for my film?

Bevel angle depends on film thickness and slitting method. Thin films (below 20 µm) typically use 15°–25° single-bevel edges for razor slitting. Thicker films (50–150 µm) in shear slitting often require 30°–45° double-bevel profiles. Our engineers can recommend an angle based on your film gauge and line speed.
Can you apply coatings to reduce adhesive build-up?

Yes. We offer TiN, CrN, and DLC (diamond-like carbon) PVD coatings that lower the coefficient of friction and resist adhesive transfer from pressure-sensitive adhesives and primers. DLC is particularly effective for PSA label stock and tape slitting. Specify coating requirements with your order.
What dimensional tolerances do you hold on slitter blades?

Standard thickness tolerance is ±0.005 mm, with parallelism within 0.003 mm. Bore tolerance is H7, and outer diameter tolerance is ±0.02 mm. Tighter tolerances can be achieved on request for high-precision gang-slitting applications.
Do you provide regrinding services for film slitting blades?

We offer regrinding for blades originally manufactured by YISHI. Blades are inspected for wear, re-ground to original geometry, and re-inspected for hardness and runout. Regrinding can extend blade life by multiple cycles, provided the blade has not been worn beyond the usable edge zone.