Converting Conversations | Episode 1 Recap: Understanding Razor Slitting Methods

When it comes to slitting, choosing the right method is critical for web handling, cut quality, and production efficiency. In Episode 1 of Converting Conversations, we explore razor slitting—one of the simplest yet most effective techniques in converting.

What Is Razor Slitting?

Razor slitting uses stationary blades to slice materials like film, foam tape, and flexible packaging. It’s preferred for its:

• Low setup cost

• Quick changeovers

• Precise narrow web slitting

While ideal for thinner substrates, razor slitting does have speed limits compared to shear slitting—typically topping out around 1500–2000 feet per minute depending on the material.

Razor Slitting Setups

There are three common ways razor slitting is applied:

• Individual Holders: The most flexible, allowing blades to be positioned manually between idler rolls.

• Brush Roll or Grooved Roll Support: Adds web support during slitting, ideal for narrow trims.

• Razor Combs: Pre-set grooves that allow for fast blade setup at fixed increments.

Each configuration provides unique advantages depending on material type and production needs.

Key Considerations

While razor slitting offers ease and affordability, blade wear can vary greatly based on material additives (like titanium dioxide in films). Frequent blade changes may be necessary, making it a better fit for short-run or job-change-heavy environments.

Material support (brush rolls, grooved rolls) can enhance edge quality, while automated razor positioners are emerging to simplify setups even further.

When to Choose Razor Slitting

Razor slitting is a top choice when:

• Running flexible films, tapes, or lightweight materials

• Operating short production runs with frequent setups

• Managing narrow web cuts or bleed trims efficiently

For broader material types or higher speeds, shear slitting might be the better option.

Watch the Full Episode

Want to see the breakdown in action? Episode 1 of Converting Conversations explains how these shaft types differ and when each might be the right fit for your production line.