Versatile application of slitting machines: precision cutting of film, paper, metal

As the core processing equipment in modern industry, the slitting machine shows strong versatility in the precision cutting of film, paper, metal and other materials with its high precision, high flexibility and intelligent functions. The following are the application analysis and technical highlights for different materials:

1. Film material slitting: high-precision and non-damage processing

Typical Applications:

• Optical films (e.g. display polarizers, brightness enhancement films)

• Packaging film (food-grade PE film, aluminum-plastic composite film)

• New energy films (lithium battery separators, photovoltaic backsheets)

Technical Requirements & Solutions:

Case:

The slitting of lithium battery separator needs to ensure an accuracy of ±1μm, and ultrasonic online detection + AI real-time deviation correction is used to prevent the battery from short circuit caused by microporous tearing of the separator.

2. Paper slitting: high efficiency and adaptability upgrade

Typical Applications:

• Specialty paper (label paper, thermal paper)

• Packaging cardboard (corrugated, cardboard)

• Cultural paper (book printing, art paper)

Technical Requirements & Solutions:

Case:

The visual positioning system is used to accurately align the metallic gloss texture and improve the consistency of the appearance of luxury packaging.

3. Slitting of metal materials: high strength and precision machining

Typical Applications:

• Metal foils (copper foils, aluminum foils, for PCB or battery current collectors)

• Sheet strip (stainless steel strip, silicon steel sheet)

• Composites (metal-plastic laminates)

Technical Requirements & Solutions:

Case:

The copper foil slitting of new energy batteries adopts flying shear technology, with a speed of 120m/min and a burr height of ≤3μm, which meets the requirements of high energy density battery pole pieces.

Fourth, cross-material general intelligent technology

1. Hybrid slitting mode:

◦ The same device is compatible with the cutting needs of film, paper, and metal through quick-change modules (e.g., knife shafts → laser heads).

2. Intelligent Detection Closed Loop:

◦ Multispectral sensors (such as near-infrared + X-ray) can simultaneously detect material defects, thickness, and humidity, and adjust process parameters in real time.

3. Digital Twin Optimization:

◦ Virtually simulate the cutting process to predict the stress distribution of the material after slitting (e.g., edge residual stress after slitting of metal coils).

Fifth, the cutting-edge trend of the industry

• Ultra-narrow slitting: the minimum slitting width is up to 0.1mm (e.g. copper foil for RFID antennas).

• Green cutting: Dry slitting technology replaces traditional lubricants and reduces chemical contamination (for food packaging films).

• AI whole-process control: from raw material warehousing to slitting finished products, fully automatic matching of process parameters (such as direct instructions issued by the MES system).

Summary: The core value of the versatility of the slitter

• Quality dimensions: edge quality, dimensional accuracy, material utilization.

• Efficiency dimension: changeover speed, cutting speed, degree of automation.

• Economic dimension: tool life, energy optimization, labor cost reduction.

Through modular design and intelligent upgrading, modern slitting machines have evolved from a single-function equipment to an all-round processing platform covering flexible materials→ hard materials → composite materials, and have become an indispensable part of high-end manufacturing.