Copper Foil is widely used in electronics, batteries, and precision components. However, due to its fragile and ductile nature, slitting thin copper foil requires advanced technology, experience, and high-precision machinery. In this news, we will explore key techniques and tools to acheive high-precision machinery. In this news, we will explore key techniques and tools to achieve high-precision copper foil slitting, and answer common questions that many customers and engineers ofter ask.
What make slitting think copper foil so challenging?
Slitting copper foil (typically 0.01–0.1mm thick) involves multiple precision-sensitive steps. Challenges include:
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Material softness: Copper is easily stretched or deformed.
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Edge burrs: Poor slitting can result in uneven edges or micro-burrs.
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Foil wrinkling: Improper tension control may wrinkle or curl the material.
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Dust generation: Affects downstream processes like PCB manufacturing.
That’s why ensuring tight control over speed, blade quality, tension system, and dust management is essential.
How can I ensure high slitting accuracy for copper foil?
To achieve precise slitting, the following machine features and processes are critical:
1. Precision Slitter Knife System
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Use high quality circular blades for durability and clean cuts.
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Ensure micron-level blade adjustment system (±0.001mm tolerance).
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Use automatic knife positioning (for repeatable settings across batches).
2. Servo-Controlled Tension System
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Maintain consistent foil tension before, during, and after slitting.
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Use felt tension pads or automatic dancing arm systems.
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Important for avoiding foil curling and stretch marks.
3. Slit Width Accuracy and Rewind Control
FQA:
What is the best method of slitting copper foil?
The best method is rotary slitting using precision circular blades with servo-tension. Circular blades provides cleaner cuts and higher line speeds than razor slitting, which is more suited to films or paper lamination.
Can copper foil be slit at high speed?
Sure, Modern machines like our Kinbenz's automatic copper foil slitting line can run at up to 200m/min while maintaining precision and cleanliness, thanks to advanced servo control and anti-vibration structures.
Conclusion:
Slitting thin copper foil requires more than just a cutting machine—it demands a precision-engineered system optimized for delicate material handling. At Kinbenz, we offer tailor-made copper foil slitting solutions with high speed, low tolerance, and full automation. Whether you're in the EV battery field or electronics, our machines ensure quality from start to finish.
Contact us to get a quote or a free consultation: Contact us - Guangzhou Kinbenz Machine Co., Ltd.
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