Film Extrusion Knives

Plastic Film

Knives for Plastic Film, Foil and Tubes

Fortisblades specializes in providing high-quality replacement knives for various machines used in the plastic film extrusion industry. With extensive experience in this field, Fortisblades ensures that their knives meet the highest standards of precision, durability, and performance.

Request a Sample

What are Film Extrusion Knives?

Film extrusion knives are used in the plastic film extrusion industry. Plastic film extrusion is a plastic forming process where molten plastic polymers are pushed through a circular or slot die and instantly cooled. The thin layer of plastic that is pushed through the die then forms a plastic film. For most thin gauge films, the process of blown extrusion or cast extrusion is used.

Our Selection of Film Extrusion Knives

Fortis: Coated Razor Blades

Fortis: Coated Razor Blades

FORTIS razor blades are stainless steel blades with a special treatment for industrial use. The cutting edges are additionally protected with an extremely hard coating, increasing the wear resistance and decreasing the friction between the blade and the film.

Ask for samples

Fortis +: Advanced Coated Razor Blades

Fortis +: Advanced Coated Razor Blades

FORTIS+ razor blades are the 'heavy duty' versions of the FORTIS blades. The cutting edges have the highest possible surface hardness and excel in slitting very though or abrasive web materials.

Ask for samples

Fortius: Solid Ceramic Razor Blades

Fortius: Solid Ceramic Razor Blades

FORTIUS razor blades are made of solid ceramic material. Their natural supremacy in hardness over steel and low friction result in the longest tool lifetime.

Ask for samples

Advantages of Our Film Extrusion Knives

Quality Slitting and Smoother Roll Edges

When it comes to cutting flexible web material, the quality of your razor blades can make all the difference. Investing in high-quality industrial razor blades ensures cleaner cuts, which in turn reduces the presence of dust particles between film layers. The result? A superior, high-quality product.

Razor Blades Slit comparison flat
Plastic Roll Edge Quality Slitting

High Reel Edges

Poor slitting techniques can lead to corrugations in the cut edge of your material. When the web is wound, these corrugations cause raised and uneven reel edges. This becomes a significant problem when you need to unwind films, often rendering the film or foil completely unusable.

Longer Lifetime

Using the wrong blade can lead to premature wear and potentially cause unplanned downtime. Different razor blades are designed for specific materials and tasks. Choose a film extrusion knife that is suitable for the material you need to cut and you will obtain a longer blade lifetime.
Engineered for optimal performance across various mineral additives and polymer types, film thicknesses, and operational speeds, we provide these blade categories to precisely align with your specific requirements.

Blades for Plastic Film Extrusion

The film extrusion knife serves as a crucial tool for trimming and winding, the final point of contact in the production process, critically defining the winding quality of the roll. Make sure every element in your extrusion line is of the highest quality. Generally there are 2 positions on a blown film extrusion line where extrusion knives are used.

Tube Opener Slitting Blades

An often overlooked part of an extrusion line is the razor blade that is used to cut open the extruded tube, resulting in 2 separate plastic film rolls. When a blade at this point does not perform, it can lead to low quality production, unplanned downtime and even scrap.

Trimming Slitting Blades

Industrial razor blades are used to slit the extruded film on exact width before winding. At the end of the extrusion process the plastic roll needs to be slit to the exact specifications of the customer. In roll winding the end product for your customer, the quality depends on the clean cut of the edges.

Industrial Razor Blade Recommendations

When selecting blades, consider the thickness, material composition, and any additional coatings which might influence performance. Blades are designed in various forms such as 3-hole, Slotted, Gillette Type... The selection depends on the specifics of the blade holder design utilized in the slitting machinery.

Fortis Industrial Double Edge Coated 3-Hole Razor Blade (80082015)

3-Hole Razor Blades for Plastic Film Extrusion

A widespread type of industrial razor blade is the 3-hole razor blade. It fits a lot of knife holders and the three-hole design ensures stability during use enhancing the operational reliability during intensive slitting. We also offer rounded 3-hole razor blade for enhanced safety.

Fortis Double Edge Slotted Razor Blade Rounded Corners Coated (80837040)

Slotted Razor Blades for Plastic Film Extrusion

Slotted Razor Blades offer an optimal slitting solution for industrial applications, delivering consistently clean slits for a variety of materials. These blades feature a robust design compatible with slotted machinery, ensuring clean cuts and extended blade life. We offer them both in straight and rounded corners for enhanced safety.

Blades for Plastic Film Extrusion Machines

Engineered for precision slitting in Plastic Film Extrusion Machines, our industrial razor blades deliver enhanced durability and consistent cut quality. These blades are a critical component for maintaining the rigorous production standards required in the plastic film industry.

Request a Sample

WH Industrial Razor Blades

Extrusion Knives for W&H

The high-performance industrial razor blades we offer for Windmöller & Hölscher (W&H) Extrusion Machines are designed for optimal compatibility, contributing to the precision and efficiency synonymous with W&H technology.

Macchi Industrial Razor Blades

Extrusion Knives for Macchi

Our Macchi-compatible industrial razor blades are crafted to exact specifications for seamless integration and superior performance, ensuring sustained production quality and efficiency.

Colines Industrial Razor Blades

Extrusion Knives for Colines

Designed for Colines Extrusion Machines, our blades guarantee precise film cuts with minimal downtime, directly contributing to increased machine productivity and reduced operational costs.

Bandera Logo

Extrusion Knives for Bandera

Optimized for Bandera Extrusion Machines, our precision-manufactured blades offer unparalleled sharpness and longevity, essential for maintaining high-speed film production and waste reduction.

Your Specific Industrial Slitting Application

Extrusion Knives for Your Extrusion Line

Let us know about your specific extrusion line and we will be happy to advise you.

* = * Mandatory fields