High-Strength Filament-Reinforced Electrical Tape

High-Strength Filament-Reinforced Electrical Tape (F-380A)

High-Strength Filament-Reinforced Electrical Tape (0.17 mm) for Motor Winding, Dry-Type Transformer Insulation, Lead Wire Anchoring & Coil Reinforcement

High-Strength Filament-Reinforced Electrical Tape is a 0.17 mm PET electrical insulation tape reinforced with continuous fiberglass filaments. It is built for electrical applications that need both strong mechanical holding power and reliable dielectric insulation.

The thicker construction gives the tape higher tensile strength and better resistance to pull-through than standard-grade filament-reinforced electrical tape. It helps hold heavier coils, secure lead wires, and keep winding structures stable during motor, generator, and dry-type transformer assembly.

This tape is suitable for Class F insulation systems (155°C) and performs well in common electrical manufacturing processes such as varnish impregnation and thermal curing. Typical uses include motor winding, lead wire anchoring, end-turn banding, dry-type transformer insulation, and generator coil reinforcement.

Converted formats and application-specific grades are available on request. Please contact us to request the latest TDS, sample rolls, or custom specifications for your motor, generator, or dry-type transformer application.

Overview

High-Strength Filament-Reinforced Electrical Tape combines PET film backing with continuous glass filament reinforcement. The result is an electrical insulation tape that provides both dielectric insulation and stronger mechanical reinforcement in heavier-duty winding applications.

The PET backing contributes stable electrical insulation, while the glass filaments add high tensile strength along the machine direction. Compared with standard-grade filament-reinforced electrical tape, the 0.17 mm version offers stronger holding power and improved stability for larger coils, heavier windings, and higher-load electrical assemblies.

Typical application areas include:

• motor winding
• lead wire anchoring
• dry-type transformer insulation
• coil banding and end-turn banding
• generator coil wrapping
• wire hold and coil reinforcement
• industrial electrical equipment manufacturing

Key Features & Benefits

Higher Tensile Strength

Continuous fiberglass filaments provide tensile strength of 500–550 N/25 mm. This helps control heavier windings and improves stability during assembly.

Low Elongation

Elongation remains at or below 5%, which helps reduce loosening, shifting, or pull-through during winding and coil holding.

Reliable Electrical Insulation

The PET backing provides dependable dielectric insulation for motors, generators, and dry-type transformer assemblies.

Better Holding Power for Heavy-Duty Applications

The 0.17 mm construction gives stronger mechanical support than standard-grade filament-reinforced electrical tape, especially in larger coils and higher-load applications.

Process Compatibility

The adhesive remains stable during common electrical manufacturing processes such as varnish impregnation, curing, and thermal cycling.

Copper Compatibility

The tape is intended for use in electrical winding systems that involve copper conductors and reinforced insulation structures.

Flexible Converting Options

The product can be supplied in slitted rolls, sheets, or die-cut parts for automated winding systems and customized insulation applications.

Technical Datasheet Summary

DESCRIPTION

PET film and continuous glass-filament reinforced electrical tape for heavier winding, lead wire anchoring, dry-type transformer insulation, and coil reinforcement. It combines higher tensile strength, low elongation, and reliable dielectric insulation for demanding electrical assemblies.

STORAGE AND SHELF LIFE

Store in original packaging in a clean, dry area at 10–27°C and below 75% RH, away from direct sunlight and heat. A 12-month shelf life is recommended unless longer retention has been internally validated.

Typical Applications

Motor Winding

Used in heavy-duty motor winding where stronger coil holding and low elongation are important.

Lead Wire Anchoring

Helps secure lead wires during motor and generator manufacturing and reduces wire movement during processing.

Dry-Type Transformer Insulation

Used as reinforced insulation and coil banding tape in dry-type transformer winding and assembly.

End-Turn Banding

Suitable for end-turn banding and related coil holding applications that need both insulation and reinforcement.

Generator Coil Wrapping

Provides stable wrapping and reinforcement for generator coils during winding and assembly.

Industrial Electrical Assemblies
Suitable for motors, generators, dry-type transformers, and other electrical assemblies that require reinforced coil insulation and stable mechanical holding.

For buyers selecting tape for motor leads, generator coils, dry-type transformer windings or ground-insulation support, see our [Motor & Transformer Insulation] guide for material selection by insulation position, winding tension, temperature exposure and varnish compatibility.

Electrical Insulation Performance

Typical electrical insulation properties are shown below.

These values indicate stable insulation performance for motors, generators, and dry-type transformer winding systems.

Thermal and Chemical Compatibility

This tape is suitable for common electrical manufacturing processes, including:

• varnish impregnation
• thermal curing
• thermal cycling during assembly

The adhesive system is intended for use with commonly used electrical insulating materials such as:

• polyester insulation varnish
• epoxy resin systems
• alkyd varnish

For oil-filled transformer applications, compatibility with transformer insulating oils should be verified separately.

Copper Compatibility & Corrosion Resistance

The tape is intended for electrical insulation applications involving copper conductors, lead wires, and reinforced winding structures. It is commonly used in motor winding, lead wire anchoring, dry-type transformer insulation, and coil reinforcement applications where stable mechanical holding and dependable insulation are required. Application-specific corrosion test information can be provided on request where needed.

Technical Specifications

Typical product properties are shown below.

Custom roll widths, converted parts, and application-specific formats are available on request.

Note: The data shown are typical values obtained by standard test methods and are provided for reference only. They should not be used as product specifications. Actual performance should be verified under the specific application, winding process, insulation system, and end-use conditions.

Standards and Test Methods

This tape is developed with reference to commonly used standards for electrical insulation tapes. Typical properties may be evaluated by applicable test methods under the following standards:

• IEC 60454-3-11 — Pressure-sensitive adhesive tapes for electrical purposes based on PET film / glass filament combinations
• IEC 60243 — Electric strength of insulating materials
• IEC 60112 — Comparative tracking index
• IEC 62631 — Dielectric and resistive properties of solid insulating materials
• ASTM D3330 — Peel adhesion
• ASTM D3759 — Tensile strength
• ASTM D257 — DC resistance or conductance of insulating materials

Quality Assurance

Each production batch is checked to support consistent product quality. Routine inspection may include:

• thickness verification
• tensile strength testing
• adhesion testing
• dielectric property verification

Downloads

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FAQ

Need help choosing tape for motor, transformer, coil, or winding insulation? See our Electrical Insulation Solutions guide for material selection notes, application limits, and buyer verification checks.

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