Film Slitting Machine Selection Guide: Key Parameters and Performance Comparison

When purchasing a film slitting machine, it is necessary to comprehensively consider the material characteristics, production needs and technical parameters. Here's a detailed guide to how key parameters compare to performance to help you match your needs exactly:

First, comparison of core purchase parameters

1. Slitting width range

• Narrow web slitting (50mm-500mm):

It is suitable for high-precision fields such as label film and electronic protective film, and needs to be equipped with high-rigidity guide rails.

• Wide slitting (500mm-3000mm+):

It is suitable for packaging film and industrial base film, and the accuracy of the guiding system is required to be ≤± 0.3mm.

2. Slitting speed

3. Tension control

• Magnetic particle brake: low cost, suitable for low speed (<100m/min) slitting, but high heat generation.

• Servo tension system: the accuracy can reach ±0.1N, suitable for high-speed slitting (such as BOPP film above 300m/min).

• Pneumatic brake: used for elastic film (such as PE stretch film) to prevent material deformation.

4. Cutting method

5. Guiding system

• Ultrasonic testing: suitable for transparent film, with an accuracy of ± 0.2mm.

• CCD vision: should be aligned with the printed film pattern, the accuracy ± 0.1mm.

• Pneumatic edge tracking: economical for low accuracy requirements.

Second, performance comparison dimension

1. Accuracy class

• Industrial grade: slitting width error ± 0.5mm (such as garbage bag slitting).

• Precision grade: ±0.1mm (e.g. MLCC release film).

• Ultra-precision grade: ±0.02mm (constant temperature workshop required, such as optical film).

2. Degree of automation

• Basic type: manual feeding + mechanical metering, suitable for small workshops.

• Semi-automatic: PLC control + automatic tool change, medium and mass production.

• Fully automatic: robot loading and unloading + AI defect detection, 24-hour continuous production.

3. Material adaptability

• Elastic film: It needs to be equipped with a pre-stretching device (such as POF shrink film).

• Composite film: anti-delamination design (e.g. PET/AL/PE structure).

• Ultra-thin film (<10μm): Vacuum adsorption transmission anti-wrinkle.

Third, suggestions for matching application scenarios

1. Flexible packaging industry

◦ Recommended model: wide (1500mm) + round knife slitting, speed ≥ 200m/min, with automatic waste edge recycling.

◦ Case: Aluminized film slitting for food packaging.

2. Electronic materials

◦ Key requirements: dust-free slitting chamber, static eliminator, accuracy ± 0.05mm.

◦ Typical equipment: servo tension + laser slitting (such as OCA optical adhesive slitting).

3. New energy film

◦ Special configuration: low-tension slitting (diaphragm tensile strength <100N/m²), copper and aluminum foil anti-metal chip design.

Fourth, the purchase of precautions

1. Trial cutting verification: Suppliers are required to provide on-site testing with their own materials to observe:

◦ Flatness of the end face of the film roll after slitting

◦ Winding tension stability (no daisy)

◦ Edge burrs/crystalline point generation

2. Energy Consumption Comparison:

◦ Conventional model: 15-30kW

◦ Energy-saving: inverter + energy recovery system (30% power saving)

3. Room for Upgrade:

◦ Whether to reserve an IoT interface (e.g., OPC UA protocol)

◦ Modular design (AOI detection can be added in the future)

Summary: Prioritize locking the parameter range according to material thickness, slitting accuracy and capacity demand, and then compare the stability and after-sales service of different brands (such as spare parts supply cycle). It is recommended to choose imported equipment in the narrow and high-precision field, and the domestic equipment for wide general membrane has more cost advantages.