Industrial Razor Slitting Blades

Industrial Razor Slitting Blades

Persistools industrial razor slitting blades are ultra-thin fixed cutting blades used for continuous slitting of film, foil, paper, tape, nonwoven materials, and other thin web products.

Unlike rotary slitting knives, razor blades are normally mounted in a fixed holder while the material moves continuously across the cutting edge.

The moving web passes against the sharp blade and is separated directly, allowing efficient slitting without requiring a powered rotating knife shaft.

This simple cutting principle makes razor slitting widely used in converting, packaging, film production, and other continuous web-processing applications.

Thin and Sharp Cutting Edge

Razor slitting blades are designed with a very thin body and precision-ground cutting edge.

The combination of low blade thickness and sharp edge helps reduce cutting resistance and provides clean separation of thin materials.

A properly prepared cutting edge helps reduce:

• Burrs
• Tearing
• Frayed edges
• Material dragging
• Uneven slit lines
• Incomplete separation

This is particularly important for thin films where excessive cutting force can deform or stretch the material.

Multiple Mounting Designs

Different machines and blade holders use different mounting-hole configurations.

Common blade designs include:

• Three-hole blades
• Kidney-hole blades
• Slot-hole blades
• Standard rectangular razor blades
• Custom mounting patterns

The classic three-hole blade is commonly produced in dimensions around 43 × 22 mm, with different thicknesses available according to cutting conditions.

Custom blade dimensions and hole configurations can also be manufactured according to existing holders, drawings, or samples.

Different Blade Materials

Different blade materials can be selected according to required sharpness, wear resistance, corrosion resistance, and production volume.

Stainless Steel

Stainless steel blades provide a practical balance of sharpness, toughness, corrosion resistance, and cost.

They are widely used for general-purpose film, paper, tape, and packaging-material slitting.

Tungsten Carbide

Tungsten carbide razor blades provide significantly higher wear resistance and maintain the cutting edge for longer production runs.

They are suitable for high-volume slitting or abrasive materials where frequent blade replacement is undesirable.

Ceramic

Ceramic razor blades provide high wear resistance, corrosion resistance, and a non-metallic cutting edge.

They can be used in selected specialty applications where conventional metal blades are less suitable.

Typical Applications

Industrial razor slitting blades are commonly used for:

• PE film
• PP film
• BOPP film
• PET film
• Packaging film
• Plastic sheet
• Adhesive tape
• Paper
• Aluminum foil
• Nonwoven materials
• Thin composite webs
• Other continuous roll materials

The final blade material, thickness, edge geometry, and mounting configuration should be selected according to the material thickness, web speed, abrasiveness, and required slit quality.