A coil slitting machine is a precision system used to cut wide master coils of film, foil, paper, or metal into multiple narrow rolls for downstream production. The machine’s structure and configuration can vary depending on material type, cutting method, and production speed.

1. Based on Material Type

A. Metal Coil Slitting Machine

Designed for cutting steel, copper, aluminum, and stainless steel coils, these heavy-duty machines feature robust shafts, high-torque motors, and specialized blade assemblies to handle hard materials.

• Applications: Steel service centers, automotive manufacturing, and electrical component production.

• Features: Hydraulic unwinder, precision circular shear knives, scrap winders, and tension-controlled recoilers.

B. Film and Plastic Slitting Machine

Used for BOPP, PET, PVC, PE, and other flexible films, these machines emphasize gentle web handling and precise tension control.

• Applications: Packaging films, protective films, and electronic insulation materials.

• Features: Razor or shear slitting blades, EPC edge alignment, servo-driven rewind shafts, and automatic roll unloading.

C. Paper and Laminates Slitting Machine

Optimized for cutting paper, label stock, and multilayer laminates, these systems offer stable tension, accurate cutting, and clean edge finishes.

• Applications: Printing, labeling, and adhesive product manufacturing.

• Features: Pneumatic knife holders, anti-static devices, and trim suction systems.

2. Based on Cutting Method

A. Razor Slitting

A fine razor blade slices the material in a single pass, producing clean edges on thin films or foils.

• Best for: Light materials (10–100 microns).

• Advantages: Simple, low-cost, easy maintenance.

• Limitation: Not suitable for thick or reinforced materials.

B. Shear Slitting

Uses male and female circular blades that overlap slightly to create a scissor-like cut.

• Best for: Paper, laminates, and metal foils.

• Advantages: Smooth edges, minimal burrs, long blade life.

• Limitation: Requires precise setup and alignment.

C. Crush or Score Slitting

A rotating blade presses the web against a hardened anvil roll to crush-cut the material.

• Best for: Nonwoven fabrics, adhesive tapes, and foams.

• Advantages: Handles pressure-sensitive or sticky materials.

• Limitation: Edge quality is not as sharp as shear slitting.

3. Based on Rewinding Configuration

A. Center Rewind Slitting Machine

Each slit strip is wound on a separate core, driven from the shaft center.

• Advantages: Tight and uniform rolls, ideal for narrow-width materials.

• Applications: Films, foils, and adhesive tapes.

B. Surface Rewind Slitting Machine

The rewind rolls are driven by surface contact with a large drum, ensuring even tension across multiple rolls.

• Advantages: Excellent for delicate materials; prevents stretching or telescoping.

• Applications: Paper, thin plastic films, or metallized layers.

C. Duplex or Dual-Shaft Slitting Machine

Features two rewind shafts that operate alternately for continuous production.

• Advantages: Higher efficiency and minimal downtime during roll changeovers.

• Applications: High-speed film and flexible packaging lines.

4. Based on Automation Level

A. Manual Slitting Machine

Basic machine with manual adjustments for knife setting and tension control. Suitable for small workshops or short production runs.

B. Semi-Automatic Slitting Machine

Includes motorized knife positioning, pneumatic chucks, and basic PLC control for improved accuracy and speed.

C. Fully Automatic Slitting Machine

Advanced models with servo control, touchscreen HMI, automatic web threading, and MES connectivity for digital production management.
Manufacturers like Jingwei Machinery integrate real-time data monitoring, automatic knife positioning, and tension synchronization for high-speed, intelligent operation.

Final Thoughts

Coil slitting machines come in many configurations — from manual film slitters to fully automated high-speed metal coil lines. The right choice depends on material type, production scale, and required cutting precision.
Selecting a machine designed for your specific substrate ensures smoother operation, less waste, and better product quality.

For advanced film casting, slitting, laminating, and rewinding systems, visit Jingwei Machinery — a professional manufacturer offering customized solutions for high-efficiency industrial production.