How to Select PTFE Tape with Good Wrapping Performance?

Jiangsu Aokai New Materials, a professional manufacturer of PTFE high-temperature fabrics, gives you professional guidance. In the insulation wrapping process of electronic transformers and coils, PTFE high-temperature tape is a key auxiliary material that determines the electrical safety and thermal stability of equipment. There is more than one type of PTFE high-temperature tape, and subtle differences in physical properties directly affect the overall wrapping effect.

1. Differences in Base Material Structure

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Pure PTFE Film TapeIt features excellent elongation and conformability, ideal for winding special-shaped coils and magnetic cores with complex rounded corners. This type of tape can perfectly eliminate air bubbles during wrapping.

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Fiberglass-Reinforced PTFE TapeIt boasts ultra-high tensile strength and dimensional stability, suitable for fixing leads of high-power transformers that bear heavy mechanical stress. It does not produce burrs when cut.

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2. Positive Correlation Between Thickness and Insulation Performance

The thickness of PTFE tape directly corresponds to voltage resistance requirements.For general interlayer insulation of coils, 0.05 mm thick PTFE tape can meet basic moistureproof and low-voltage insulation needs.For reinforced insulation of high-voltage package leads, 0.18 mm or thicker PTFE tape must be adopted to ensure a safe creepage distance.

3. Matching of Pressure-Sensitive Adhesive System

Most mainstream PTFE high-temperature tapes are coated with silicone pressure-sensitive adhesive. It is essential to verify whether the silicone adhesive will dry out or cause difficult unwinding after long-term high-temperature baking. High-quality PTFE tape should have nearly zero residual adhesive after peeling off.

4. Processing Performance & Long-Term Reliability

PTFE high-temperature tape needs to be both easy to use and highly durable.Operation requirements: Premium PTFE tape is designed with low unwinding force, maintaining stable release force for both manual winding and CNC automatic winding machines. Its non-stick surface prevents adhesion to wire enamel even with slight contact during winding.

5. Resistance to Long-Term Thermal Aging

After thousands of hours of hot air circulating aging, the base material of qualified PTFE tape shall not crack or become brittle. If the tape breaks easily with slight contact after aging, it indicates defects in the purity of PTFE resin or polymerization technology.

The above content is provided by Jiangsu Aokai New Material Technology Co., Ltd.

We offer a full range of products including PTFE high-temperature cloth, PTFE high-temperature tape, PTFE high-temperature mesh belt, seamless fusing machine belt, single-sided PTFE coated fabric, high-temperature resistant conveyor belt and high-temperature resistant fiberglass cloth.For detailed specifications, application cases and customized solutions, please contact us:

· Mr. Guo: +86 18944819998

Mr. Liu: +86 13705266308