Advanced Cell Wrapping Tape Solutions for Electric Vehicle Battery Safety

As electric vehicle (EV) batteries evolve, ensuring electrical insulation and protection from arcing becomes critical. The increasing energy density and voltage of modern lithium-ion cells elevate the risk of electrical discharge, which can lead to performance degradation, reduced lifecycle, or catastrophic failure.

To meet these challenges, cell wrapping tapes — built from thin, durable, and chemically resistant PET films — are emerging as the preferred alternative to traditional spray coatings. These dielectric films are wrapped around battery cells, providing a reliable, uniform barrier that prevents unintended current flow between cells or to other battery pack components.

Why Choose Pressure-Sensitive Cell Wrapping Tape?

Avery Dennison’s cell wrapping solutions are engineered to meet the most demanding requirements of EV manufacturers:

• ✅ High Dielectric Strength
  PET-based facestocks deliver excellent insulation with AC breakdown voltages exceeding 8 kV — ideal for high-voltage battery architectures.

• ✅ Multiple Layer Options for Redundancy or Cost Control

  • Double-layer PET: Enhances dielectric protection and redundancy

  • Single-layer PET: Reduces cost while maintaining critical performance

• ✅ Color Coding for Visual Inspection and Aesthetic Integration
  Offered in blue, yellow, and gray, these tapes enable quick visual identification and better process control during high-speed manufacturing.

• ✅ Electrolyte-Resistant Acrylic Adhesives
  The pigmented acrylic adhesives are specifically formulated to resist electrolyte degradation, ensuring long-term bond integrity, thermal stability, and aging resistance.

• ✅ Optimized for Automation
  Self-wound, linerless formats allow seamless integration into automatic wrapping processes.

• ✅ Made in the USA
  Selected models are manufactured domestically to support Inflation Reduction Act (IRA) requirements and localized EV supply chain development in North America.

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Featured Product Models

ES 1521 Blue

• Dual 1 mil PET construction

• Blue pigmented adhesive for easy application identification

• 8 kV AC breakdown voltage

• Ideal for prismatic and cylindrical cells requiring high insulation redundancy

ES 1421 Blue

• Single 2 mil PET film

• Blue adhesive, excellent dimensional and thermal stability

• 8 kV AC dielectric strength

• Preferred for EV cell wrapping where single-layer protection suffices

ES 1421 Yellow

• Identical to ES 1421 Blue but with yellow adhesive for alternate visual cue or brand-specific packaging

• 8 kV AC insulation rating

• Excellent for large-format cells or color-coded production lines

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✅ Key Advantages Summary