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
Type of material | Typical speed range (m/min) | Driver configuration requirements |
CPP/PE packaging film | 100-300 | AC inverter motor |
PET optical film | 50-150 | Servo motor (closed-loop control) |
Lithium battery separator | 20-80 | Dual servo + tension sensors |
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
type | Applicable Materials | The quality of the incision | Maintenance costs |
Round knife shear | PET/CPP/aluminum foil | Burr-free, right-angle cut | high |
Razor slitting | Soft PE/PP | Slight indentation | low |
Laser slitting | High value-added films (e.g. PI films) | No contact and zero pollution | Extremely high |
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.