High Temperature PI Polyimide Acrylic Tape for Motor & Transformer

The PI Polyimide Acrylic Tape is a premium high-temperature electrical insulation solution engineered for demanding applications in motor manufacturing, transformer winding, new energy vehicle (NEV) electronics, and precision die-cutting. Constructed with a durable amber-gold polyimide (PI) film backing and coated with a high-performance acrylic adhesive, this tape delivers exceptional thermal stability at continuous operating temperatures up to 150℃. The UL certification (E246820) provides authoritative safety assurance for global market access. A key differentiator is the non-silicone release liner, which eliminates silicone contamination risks—critical for sensitive electronic components in EV batteries, aerospace systems, and medical devices. With a dielectric breakdown voltage exceeding 4.5kV, built-in flame retardant properties, and excellent chemical resistance, this tape ensures reliable insulation and long-term performance in the most challenging electrical environments. The balanced acrylic adhesion (>250 N/m peel strength) makes it ideal for both permanent coil insulation and clean-release die-cutting waste removal applications.

• 150℃ Continuous Temperature Resistance: Polyimide film backing maintains excellent mechanical and dielectric properties at sustained operating temperatures up to 150℃, with short-term tolerance for higher peak temperatures during soldering or curing.
• Superior Electrical Insulation: Dielectric breakdown voltage exceeds 4.5kV, providing reliable isolation for high-voltage motor windings, transformer coils, and power electronics in new energy vehicles.
• Flame Retardant & Safe: Engineered with inherent flame retardant properties to meet stringent fire safety requirements in electrical appliances, automotive components, and industrial equipment.
• High Peel Strength Acrylic Adhesive: Acrylic adhesive system delivers >250 N/m peel adhesion, offering stable, long-term bonding for permanent insulation while maintaining clean removability for die-cutting process applications.
• Excellent Chemical & Solvent Resistance: Polyimide film and acrylic adhesive withstand exposure to transformer oils, cleaning solvents, flux, and industrial chemicals without degradation or adhesive breakdown.

• Electric Motor Insulation: Used for slot liner retention, phase-to-phase insulation, lead wire anchoring, and coil bundling in AC/DC motors, servo motors, and traction motors for new energy vehicles.
• Transformer Winding & Layering: Provides high-temperature layer insulation, outer wrap protection, and lead isolation in power transformers, high-frequency transformers, and automotive ignition coils.
• New Energy Vehicle (NEV) Electronics: Critical insulation for EV battery pack components, battery management systems (BMS), onboard chargers (OBC), DC-DC converters, and high-voltage wiring harnesses.
• Die-Cutting Waste Removal: Functions as a high-strength waste stripping tape for removing matrix material from precision die-cut parts, labels, and gaskets without adhesive transfer.
• Die-Cutting Carrier & Process Tape: Serves as a stable carrier film or transfer tape in multi-layer die-cutting operations, providing reliable support for delicate materials during lamination and cutting.
• PCB Masking & Wave Soldering: Protects gold finger contacts, edge connectors, and designated keep-out zones during high-temperature wave soldering and reflow processes.

Quality and safety are paramount. Our insulating tape is manufactured to the highest standards and holds internationally recognized certifications:

1. UL Recognition: Certified by Underwriters Laboratories (UL) under File Number E246820, confirming its safety and performance.
2. Comprehensive Testing: Backed by detailed test reports from SGS and CTI, verifying its physical, electrical, and chemical properties.