Special Dished Knives are custom-engineered slitter knives designed for slitter rewinders, web slitting machines, inspection equipment, and other converting systems. They are developed for applications that require specialized cutting-edge geometries beyond standard single-bevel, double-bevel, or hollow-bevel knife designs.
These special dished slitter knives can be used for precision slitting of paper, paperboard, plastic films, aluminum foil, labels, adhesive tapes, flexible laminates, nonwoven materials, and other web substrates.
For demanding applications, customized serrated edges, tooth profiles, cutting geometries, and edge configurations can be manufactured according to the material and cutting process. The specialized edge design can help improve cutting stability, control material deformation, and reduce material buildup during continuous slitting.
Different surface treatments are also available depending on the application. Precision grinding, mirror polishing, and functional surface coatings can be applied to achieve the required dimensional accuracy, surface finish, wear resistance, or anti-adhesion performance.
As a custom slitter knife manufacturer, WINGCHONG KNIFE can manufacture special dished knives according to your technical drawing, existing knife sample, machine model, or dimensional requirements.
Custom Cutting Profiles
Special cutting-edge profiles can be manufactured for applications where standard slitter knife geometries cannot provide the required cutting performance.
Serrated & Tooth Geometries
Customized serrated edges and tooth profiles are available for specific materials and cutting conditions, helping improve material engagement and cutting stability.
Precision Grinding
Precision grinding provides accurate knife dimensions and consistent edge geometry for reliable slitting performance.
Mirror-Polished Finish
A mirror-polished surface can help reduce surface roughness and minimize adhesive or material residue buildup on the knife.
Functional Surface Coatings
Optional surface coatings can be applied where enhanced wear resistance, anti-adhesion properties, or extended service life are required.
Custom Knife Materials
Special dished knives can be manufactured from D2 tool steel, M2 high-speed steel, powder metallurgy steel, tungsten carbide, and other application-appropriate materials.
Special dished slitter knives can be manufactured for a wide range of web materials, including:
Paper
Paperboard
Plastic films
Aluminum foil
Labels
Adhesive tapes
Flexible laminates
Adhesive laminates
Nonwoven fabrics
Insulation
Other specialty web materials
The knife geometry and material should be selected according to the substrate, thickness, hardness, adhesive characteristics, slitting speed, and machine configuration.
Special slitting applications often require knife geometries that cannot be achieved with standard products. We provide custom slitter knife manufacturing based on your actual machine and application requirements.
Customization options include:
| Outer Diameter | Inner Diameter | Thickness |
| 62 | 40 | 0.6 / 0.8 / 1.2 |
| 65 | 40 | 0.6 / 0.8 / 1.2 |
| 75 | 45 / 50 / 60 | 0.6 / 0.8 / 1 / 1.2 |
| 90 | 45 / 50 / 60 | 0.6 / 0.8 / 1 / 1.2 |
| 100 | 65 / 70 / 75 | 0.8 / 1 / 1.2 |
| 105 | 65 / 70 / 75 | 0.8 / 1 / 1.2 |
| 130 | 80/100 | 1.5 |
| 140 | 70 / 95 | 1.5 / 2 / 3 |
| 150 | 80 | 1.5 / 2 / 2.5 |
| 170 | 90 / 120 | 2/3 |
| 180 | 90 / 120 | 2 / 3.5 |
| 200 | 80 / 120 | 3.5/4 |
| Material: 1.2379、1.3343、chrome-alloyed (1.5 % Cr), high-chrome-alloyed tool steels (12 % Cr) and powder-metallurgical high-speed steels |
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You can provide a technical drawing, existing knife sample, machine model, or dimensional specifications. Our technical team can evaluate the application and recommend an appropriate knife geometry and material.
The choice of knife material and surface treatment depends on the cutting material, operating conditions, required edge life, and production environment.
D2 provides good wear resistance and dimensional stability and is suitable for a wide range of general industrial slitting applications.
M2 high-speed steel offers a combination of hardness, toughness, and wear resistance for demanding cutting applications.
Powder steel can provide enhanced wear resistance and edge retention for applications requiring longer knife service life.
Tungsten carbide provides high hardness and excellent wear resistance for abrasive materials and demanding continuous slitting applications.
Depending on the application, knives can be supplied with:
● Precision grinding
● Mirror polishing
● Functional surface coatings
● Other application-specific surface treatments
The final material and surface treatment should be selected according to the actual slitting conditions.

Special dished knives can be manufactured for different slitting systems used with mechanical or pneumatic knife holders.
Because special knives often involve non-standard edge profiles or mounting dimensions, compatibility should be confirmed according to the actual machine configuration.
We can manufacture related slitting components, including:
● Special dished knives
● Bottom knives
● Mechanical knife holders
● Pneumatic knife holders
● Custom knife mounting components
● Matched upper and bottom knife assemblies
Providing the machine model, existing knife sample, or technical drawing helps ensure dimensional compatibility.

Special dished knives are commonly used in:
● Paper converting
● Flexible packaging
● Film slitting
● Aluminum foil converting
● Label converting
● Adhesive tape production
● Lamination
● Nonwoven processing
● Specialty material slitting
● Inspection and rewinding
● Web converting
● Custom slitting applications
They are particularly suitable for applications requiring special cutting profiles, serrated edges, customized tooth geometries, or enhanced wear and anti-adhesion performance.
Custom Manufacturer: Manufactured according to drawings, samples, or specific machine requirements.
Special Edge Profiles: Serrated, toothed, and other non-standard cutting profiles can be manufactured for specialized slitting applications.
Precision Manufacturing: Controlled edge geometry and dimensional tolerances support accurate and consistent web slitting.
Flexible Material Options: D2, M2, powder metallurgy steel, tungsten carbide, and other knife materials are available.
Custom Surface Treatments: Mirror polishing and functional surface coatings can be selected according to material and cutting conditions.
Application-Specific Solutions: Custom diameters, bores, thicknesses, edge geometries, and tolerances are available for different slitting systems.
Abrasive Cutting Knives are industrial cutting tools specifically designed for cutting abrasive rolls such as sandpaper and abrasive cloth.
Dished knives are circular cutting tools used for shear-type slitting. Unlike completely flat “flat knives,” their blades feature a concave geometric shape (resembling a plate or dish), a design that enables them to generate specific lateral cutting forces during rotational shearing.
Adhesive materials: Self-adhesive labels, adhesive tape, various composite films (die-cutting can create a temporary seal along the cut edges).
Elastic/soft materials: Rubber, non-woven fabric (NWF), textiles, tissue paper.
Abrasive/hard materials: Materials such as sandpaper that can quickly wear down standard sharp blades.