Industrial cutting blades are essential components for many machines used in industrial settings. They are employed in numerous sectors and are designed to ensure precision, efficiency and durability when cutting different materials. Below, we analyze the uses of blades in several types of machinery and for specific materials.

Machinery that uses industrial cutting blades

1. Rewinder (uses shear cutting)
Rewinders are essential machines for cutting and rewinding materials such as paper, plastic films, flexible laminates, and nonwoven fabrics (TNT).
• Types of blades used: upper blades mounted on mechanical or pneumatic blade holders and lower blades.
• Blade function: they ensure precise cutting during the conversion of material into custom-sized reels.

2. Cardboard core cutter (uses crush cutting)
These machines are designed to cut cardboard cores used as supports for winding flexible materials.
• Types of blades used: lower blades.
• Blade function: they ensure a clean, burr-free cut, which is essential for maintaining reel integrity during use.

3. Abrasive belt cutter (uses crush cutting)
Processing abrasive belts requires highly precise machinery capable of cutting extremely resistant materials.
• Types of blades used: upper blades.
• Blade function: they allow uniform and accurate cutting of abrasive material, ensuring a high-quality finish.

4. Slitter (uses shear cutting)
Slitters are used to divide jumbo rolls into smaller rolls with specific widths. This process is common for materials such as paper, films, adhesive laminates, and flexible substrates.
• Types of blades used: upper blades mounted on mechanical or pneumatic blade holders and lower blades.
• Blade function: they ensure clean and precise cuts even at high speeds.

5. Label inspection table (uses shear cutting)
These machines are designed for quality control and trimming of adhesive labels.
• Types of blades used: upper blades mounted on mechanical blade holders and lower blades.
• Blade function: they accurately trim labels to ensure uniformity and precision in the finished product.

Materials processed 

Industrial cutting blades are designed to work with a wide range of materials. At Negri Lame, we work with:

1. Abrasives
Materials used for sanding and polishing. Blades must be wear-resistant to effectively cut highly hard abrasive materials.

2. Adhesive and flexible laminates
Materials composed of layers of adhesive or flexible films. Blades must provide tear-free and wrinkle-free cutting to maintain layer integrity.

3. Aluminum
Processed in thin sheets, it requires high-precision blades to avoid deformation during cutting.

4. Cardboard cores
Central supports for reels. Blades must guarantee a clean cut to ensure stable winding.

5. Paper and cardboard
Materials widely used in various industrial sectors. Blades must ensure clean cuts without leaving rough or jagged edges.

6. Labels
Blades must be extremely precise to properly trim labels and ensure the quality of the final product.

7. Films
Plastic films used in many applications. Blades must prevent wrinkles or damage to the material during cutting.

8. Nonwoven fabric (TNT)
A versatile material requiring sharp blades to achieve a clean cut without damaging the fiber structure.

Types of industrial blades for shear cutting

1. Lower blades
Mounted on the machine’s lower shaft, they work in synergy with upper blades to provide shear cutting.
2. Upper crush-cut blades
Mounted on the upper shaft, they perform direct cutting of the material.
3. Mechanical blade holders
Supports that integrate the blades and facilitate their adjustment and positioning for specific processing needs.

In conclusion, industrial blades are a crucial element for many industrial processing operations. The choice of blade type and suitable machinery depends on the material being processed and the specific application. Investing in high-quality blades ensures not only precision and efficiency but also greater tool durability and reduced overall operating costs.