In the booming EV and energy storage industries, safety and precision are everything.
That’s why manufacturers rely on polyimide tape, also known as Golden Finger Tape, to meet the demanding needs of lithium battery production.
But how exactly does this tape function — and why is it so critical?
Let’s explore how Lvzhimei polyimide tape supports the future of clean energy.

🔍 Why Is Polyimide Tape Ideal for Batteries?
Lithium battery manufacturing involves heat, pressure, and sensitive materials — a harsh environment where ordinary tape simply fails.
Here’s why Golden Finger Tape excels:
| Feature | Benefit |
|---|
| 🔥 High-temp resistance | Withstands 260°C heat during welding processes |
| 🔌 Electrical insulation | Prevents short circuits between cell components |
| 🧼 Clean removal | No adhesive residue on sensitive parts |
| 💪 Strong tensile strength | Holds firmly even under pressure and bending |
| ⚡ Thin & precise | Ensures compact insulation without bulkiness |
It’s not just a tape — it’s a safety component.

🧪 Battery-Specific Applications of Golden Finger Tape
Lvzhimei polyimide tape is widely used in:
• ✅ Cell tab insulation – wraps the positive & negative terminals
• ✅ Busbar protection – during ultrasonic welding or laser welding
• ✅ Cell wrapping – layer-by-layer insulation in pouch cells
• ✅ Battery pack assembly – spot insulation for series/parallel modules
• ✅ BMS circuit masking – protects delicate PCB circuits during reflow
🔋 Whether it’s cylindrical (18650/21700), prismatic, or pouch cells, polyimide tape is integrated into every step.

🌿 Certified & Safe for Export
All Lvzhimei polyimide tapes are:
• RoHS & REACH compliant
• Halogen-free (on request)
• Available with UL94 flame-retardant rating
• Offered with MSDS / TDS / COA / test reports
📦 We provide packaging and labeling suited for automotive OEMs, battery factories, and global exporters.

🛠️ Customization for Battery Industry
| Custom Option | Description |
|---|
| Die-cut formats | U-shaped, tab, disc, frame, rectangle |
| Double-sided tape | For laminated insulation |
| ESD-safe version | Anti-static treated surface |
| Dual-layer composite | PET/polyimide or aluminum-backed versions |
| Flame retardant grades | UL94 V0 / VTM-0 available |
Need special specs? Send us your drawings — Lvzhimei supports OEM/ODM projects.

🔧 Case Study: EV Battery Pack Assembly
A major EV battery supplier needed:
• 100,000pcs/month of die-cut polyimide insulation pieces
• High-temp resistance (≥260°C)
• Clean-room production
• RoHS + UL94 certification
Lvzhimei provided custom die-cut tapes in reels, ready for auto-placement machines — improving speed and reducing defects by 25%.

✅ Final Thought
In the high-stakes world of lithium batteries, every detail matters — especially insulation.
Golden Finger Tape isn't just a protective layer; it's a functional part of the power system.
Trust Lvzhimei’s polyimide tape to power the next generation of energy solutions — safely and reliably.
