Fiber composites

Application Fiber composites

Looking for high-quality tungsten carbide knives to cut carbon, aramid, or fiberglass composites? Explore our full range of drag, oscillating, decagonal and rotary knives compatible with Zund, Summa, Esko, Kongsberg, Atom, iEcho, JWEI cutting tables, and industrial knives for supersonic cutting at Sollex.se.



Precision Cutting of Carbon, Aramid, and Glass Fiber Composites

Cutting Solutions for Fiber Composite Materials

Fiber-reinforced composite materials are widely used in aerospace, automotive, marine, defense, and industrial sectors, these materials consist of high-performance fibers, such as carbon fiber, aramid fiber (Kevlar®), and glass fiber, combined with a thermoset or thermoplastic matrix. Cutting composite materials requires the right cutting tools.

At Sollex, we supply industrial knives, supersonic tungsten carbide knives, and CNC blades for digital cutting systems optimized for cutting both prepreg composites and dry fiber fabrics. Our cutting tools are designed for high-performance digital and ultrasonic systems, ensuring clean, accurate cut edges.

Download PDF with Sollex Blades for Composites



Cutting Carbon Fiber Composites (CFRP)

Carbon fiber composites deliver exceptional strength and stiffness with minimal weight, making them ideal for high-performance applications. Available in prepreg (thermoset or thermoplastic resin-impregnated unidirectional or woven fabrics) and dry fabric (woven plain, twill, unidirectional UD, and multiaxial) formats, they are used in everything from aircraft and race cars to sports equipment and industrial components.

Recommended cutting methods: CNC digital cutting with drag, oscillating, and rotary knives, ultrasonic cutting to reduce delamination, and waterjet cutting for thick materials and multilayers.

Sollex knives for carbon fiber: 

  • To cut carbon fiber prepregs: Z10, Z11, Z62
  • To cut carbon fiber fabrics (woven, unidirectional, multiaxial): Z50, Z52, Z53, P945
  • Sollex custom ultrasonic knives for precision edge quality with minimal dust



Cutting Aramid Fiber Composites (Kevlar®, Twaron®)

Aramid-reinforced composites are favored in applications requiring energy absorption, such as ballistic protection, aerospace fairings, and vibration-damped structures.

Recommended cutting methods: ultrasonic cutting to get clean edges and minimal fiber pull-out, laser cutting for high precision for detailed patterns, and  CNC digital cutting with drag, oscillating, and rotary knives. Aramid cutting requires extremely wear-resistant blades.

Sollex knives for aramid fiber: 

  • To cut aramid prepreg sheets: Z10, Z11, Z62
  • To cut dry aramid fabrics, including woven and non-woven formats: Z50, Z52, Z53, P945
  • Sollex custom ultrasonic knives to reduce fraying, delamination, and fiber pull-out 



Cutting Glass Fiber Composites / Fiberglass (GFRP)

Fiberglass composites are widely used in construction, wind energy, and transportation. They are available in prepreg and dry fabric forms, including woven, non-woven, and multiaxial structures.

Recommended cutting methods: rotary blade cutting for clean cuts with low fiber damage, waterjet cutting for complex or thick shapes, CNC cutting.

Sollex knives for glass fiber: 

  • To cut fiberglass prepregs: Z10, Z11, Z62
  • To cut for single- and multi-ply dry fiberglass fabrics : Z50, Z52, Z53, P945
  • Sollex tungsten carbide ultrasonic knives deliver high-precision cuts with minimal fiber disruption.



Sollex Ultrasonic Knives – Made of Tungsten Carbide

Why use ultrasonic cutting for composites? Composite fiber-reinforced materials are difficult to cut with traditional methods due to fraying or fiber pull-out (especially with Kevlar® and carbon fabrics), delamination in prepregs, high tool wear due to abrasive fibers, resin gumming on blades during cutting of thermoset materials.

Sollex manufactures ultrasonic cutting knives from tungsten carbide, developed specifically for composite materials with high fiber density and abrasive characteristics. Sollex ultrasonic knives solve:

  • Fiber pull-out in aramid fabrics 
  • Delamination in prepreg carbon or glass fiber laminates
  • Gumming of tools from thermoset resin systems 
  • Rapid wear caused by abrasive fibers (e.g., glass, carbon) 
  • Edge fuzzing and fraying in dry fabrics


Sollex tungsten carbide knives feature extreme hardness and wear resistance, stability under vibration and precision edge geometry and are particularly effective for Kevlar®, multiaxial carbon fabrics, and glass reinforcements.



Industrial Cutting Knives for Composite Materials

Sollex offers a selection of industrial knives for fiber composite cutting, including blades for digital cutting tables such as Zünd, Summa, Esko, Colex, Hasler, Atom as well as custom industrial knives for ultrasonic cutting systems. Whether you're processing prepreg sheets or dry composite textiles, our knives are engineered to reduce wear, extend tool life, and deliver precise results.

Sollex tungsten carbide knives to cut carbon, glass and aramid fiber-reinforced composite materials

Materials

Prepregs

Fabrics 

Carbon Fiber Composite

  • Sollex Z10 drag knife 50°
  • Sollex Z11 drag knife 60°
  • Sollex Z62 oscillating knife 78°
  • oscillating ultrasonic knives
  • Sollex Z50 rotary knife
  • Sollex Z52 rotary knife
  • Sollex Z53 rotary knife
  • Sollex P945 rotary knife

Glass Fiber Composite

Aramid Fiber Composite


Key performance features of Sollex knives for composite material cutting:

  • Low-friction coatings for resin-heavy materials
  • Edge designs that reduce delamination and fiber disruption
  • High wear resistance for abrasive fabrics (e.g., aramid, glass)
Select display view



Customer common questions and Sollex answers

What is the typical delivery time for Sollex standard products?

Standard knives that are in stock will be shipped the same day if an order is placed before 1 pm on weekdays. Within Sweden, delivery takes one to two business days with Schenker. Two to five working days inside Europe with UPS. Our goal is always to deliver to your address as quickly as possible.

What is the typical delivery time for Sollex custom-made knives?

You will be given a delivery time, which typically ranges from 4 to 9 weeks, if you request customized machine knives or industrial blades that are not in stock at the time of purchasing. Find Sollex Purchase & Delivery Conditions here.

What payment methods do you accept, and do you offer credit terms for business customers?

All first orders from new customers are prepaid. Further orders can be paid by invoice with 30 days payment term.

How can I track my order after purchase?

Once your order is confirmed and shipped, you will receive a tracking number, which you can track.

Do you offer custom sizes or specialized blade shapes?

Sollex primarily sells machine knives of standard size and form that comply with the EOM. Industrial knives are available in a variety of forms, including top dished, bottom circular knives, serrated / toothed knives, circular perforating knives, straight knives, guillotine knives, pointed tip knives, rectangular razor blades, and trapezoidal blades. 

We do, however, create bespoke knives of non-standard size and shape when a drawing or explicit request is provided. For example, we can manufacture solid tungsten carbide machine knives in a variety of non-standard forms with ultra-precise and extreme tolerances, which is very useful in the MedTech industry.

How do I choose the right blade for my specific machine or application?

When contacting a knife manufacturer to order knives for machines and slitters, providing accurate inquiries and detailed information is critical to ensure you receive industrial knives that meet the needs of your slitting, converting operations and the material you will be cutting. 

If you are ordering custom machine knives from Sollex, make sure you know the exact knife dimensions, material and mounting specifications. A drawing and a worn sample for analysis are useful. If not available a photo with clear dimensions can work. Identify in your request the current cutting problems you are currently experiencing with the cutting knife you are seeking to replace. If in doubt, our experts can help you find the right knife based on your machine model and cutting needs.

Can I get a sample or test blade to ensure compatibility with my equipment?

To help you pick the best blade, Sollex may give you several sample blades to test in production. For cutting and converting flexible materials like plastic film, foil, vinyl, paper, and others, we provide converting blades including slotted slitter blades and razor blades with three slots. Send us a query if you're interested in machine blades, and we'll provide you with an offer. Samples for custom-made knives are not available but you are most welcome to order the minimum order quantity.

Can I set up a recurring order for blades I purchase frequently?

Actually, our clients and industry partners often place recurrent orders for industrial knives with predetermined delivery dates. We ensure your production process runs well by manufacturing and delivering machine knives and blades on schedule. The most important thing is to tell us the volume of required knives and deadlines and we will prepare a warehouse supply guarantee.

Do you offer technical support or consultation to help with product selection?

Sollex sales may technical assistance and guidance on choosing a slitting knife in addition to assessing and creating the best cutting solution for your application. You can consult via phone, mail, or video conference. To do this, send an email to order@sollex.se.

What is your return or warranty policy on machine knives and blades?

Read our policy on returns and claims on the “Complaint & Return” page.

How should I store unused blades to maintain their quality?

There are a number of ways that will prolong the longevity and shelf life of your industrial knives and blades in stock. Read about how proper packaging of machine knives, storage conditions, humidity and air temperature, and additional coatings will protect your knives and maintain their cutting performance here.



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