Created on 2025.12.09

Best Application Practices of Cutting Knives in the Packaging Industry

Modern packaging materials are becoming increasingly diverse and complex. As production speeds continue to rise, the requirements for slitting knives, die-cutting tools, and tungsten carbide blades also increase. Choosing the right knife and optimizing cutting stability are essential for achieving high-quality packaging results.

Below are the best application practices for cutting tools in the packaging sector, based on real industrial applications.

1. Select Knives Based on Material Characteristics

1) Single-layer films (BOPP / PET / CPP)

Recommended: HSS (High-Speed Steel) blades

Advantages: Sharp, cost-effective, suitable for light-duty slitting

2) Laminated Films (PET/AL/PE, NY/PE)

Recommended: Tungsten carbide blades

Advantages: Superior wear resistance, clean edges, longer tool life

3) Aluminum Foil & Metallized Films

Recommended: Coated carbide blades / ultra-hard blades

Focus: Reduce burrs and sticking, maintain smooth edges

4) Packaging Bag Die-Cutting

Recommended: Die-cutting tools

Used for tear notches, hang holes, and special shapes

2. Maintain Cutting Stability with Proper Tension Control

Stable tension is crucial to avoid:

Edge burrs

Curling

Drag marks

Etto Precision knives work efficiently with:

Differential Slip Shafts

Hysteresis Brakes / Magnetic Powder Brakes

Air Shafts

3. Reduce Downtime Through Proper Knife Strategy

Downtime often results from:

Edge chipping

Poor engagement

Irregular cuts

Effective methods:

Use tungsten carbide knives for abrasive materials

Ensure precise knife engagement

Use automatic pneumatic knife sets for quick setup

4. Ensure Compatibility with Packaging Equipment

Etto Precision knives meet global standards and are compatible with major slitting and packaging machines.Specifications covered:

ID / OD

Thickness

Bevel angle

Edge geometry

Conclusion

Knife selection and proper matching with materials and tension systems are essential for achieving consistent, high-quality cutting performance in the packaging industry. Etto Precision provides professional cutting solutions tailored for modern packaging production.