Nitto No.31B Polyester Tape for Transformers & Coils

Nitto No.31B Polyester Adhesive Tape (part of the renowned No.31 series) represents the gold standard in electrical and electronic component insulation. Constructed with a highly durable polyester film backing and coated with a specialized, solvent-resistant acrylic adhesive, this tape offers an exceptional balance of mechanical strength and electrical insulation properties. It is uniquely formulated to provide outstanding dimensional stability and puncture resistance, ensuring reliable long-term performance even in demanding thermal and electrical environments.

Unlike general-purpose tapes, Nitto No.31B is engineered to prevent edge-lifting and flagging during high-speed coil winding processes. It maintains its structural integrity and adhesive strength at normal operating temperatures up to 120°C, making it the premier choice for the interlayer and exterior insulation of transformers, relays, motors, and magnetic coils.

KEY TECHNICAL ADVANTAGES:

• Superior Electrical Insulation: High dielectric strength prevents electrical breakdown, making it highly safe for interlayer and exterior coil insulation.
• Excellent Heat & Solvent Resistance: Maintains stable adhesive performance and physical properties at operating temperatures up to 120°C, while resisting degradation from varnishes and industrial solvents.
• High Dimensional Stability: The rugged polyester carrier resists shrinking and stretching, ensuring tight, uniform wraps without flagging or edge lifting.
• Automated Winding Ready: Provides consistent unwind tension and high tensile strength, preventing breakage during high-speed automated manufacturing.
• Factory-Direct Converting: We don't just sell tape; we convert it. We provide ultra-narrow slitting, custom die-cut insulation pads, and traverse spooling tailored to your exact manufacturing equipment.
• Premium Brand Alternatives: Alongside genuine Nitto Tapes, our factory manufactures and supplies high-performance equivalent tapes (replacing 3M, Tesa, and Nitto) to drastically optimize your procurement costs.

Why Partner with Kingzom Tapes?

As an experienced B2B industrial tape converting facility, our value extends far beyond distributing standard rolls. We operate state-of-the-art machinery capable of ultra-narrow precision slitting, complex CAD-driven die-cutting, traverse spool rewinding, and custom length cutting. Whether you need exact width rolls for your automated wrapping machines or custom-shaped insulating gaskets, we deliver end-to-end solutions that minimize your assembly time and maximize production efficiency. In addition to supplying genuine Nitto, 3M, and Tesa materials, we proudly manufacture premium, cost-effective equivalent alternatives that deliver the exact performance you require at direct-from-factory pricing.