Application Scenario of Polyimide Tape

Polyimide tape, also known as Kapton tape is based on polyimide film and uses imported silicone pressure-sensitive adhesives. It has high and low temperature resistance, acid and alkali resistance, solvent resistance, and electrical insulation ( Class H), radiation protection and other performance. The base material with specially processed high temperature resistant insulating material polyimide film has characteristics of excellent insulation, wear resistance, acid and alkali resistance, high-temperature tape. This product has excellent electrical properties, high insulation, high-temperature resistance, low temperature, acid resistance Alkali, low electrolysis, good mechanical properties, abrasion resistance, tear resistance, special adhesive treatment, strong adhesion, and no residual glue on the masked surface after tearing off. Features and applications of polyimide tape are as follows:

1. Application of polyimide tape in the electronics and electrical industry

Polyimide tape can be used for insulation wrapping of H-class motor and transformer coils with higher requirements, wrapping and fixing the ends of high temperature resistant coils, protection of temperature measuring thermal resistance, tangling of capacitors and wires and other bonding insulation under high temperature working conditions.

2. Application of polyimide tape in the circuit board manufacturing industry

Polyimide tape, like the polyimide silicone tape, can be used for electronic protection and paste, especially suitable for SMT temperature protection, electronic switches, PCB board gold finger protection, electronic transformers, relays and other electronic components that require high temperature and moisture protection. And according to the needs of special manufacturing process, it is equipped with low static electricity and flame retardant polyimide tape! High-temperature surface reinforcement protection, metal material high temperature spray paint, sandblasting coating to shield the surface protection, after high-temperature spray paint baking, it is easy to peel off without leaving residue glue. It has the advantages of high-temperature resistance, high tensile strength, good chemical resistance, no residual glue, and conforms to ROHS environmental protection, and halogen-free.

3. Industrial application of polyimide tape

Ultra-thin polyimide tape is mainly used for high-temperature insulation winding such as painting, baking, transformers, motors, coils, capacitors and variable frequency power supplies.

Polyimide Tape vs. Kapton Tape: Key DifferenceMaterial Composition

1.Material Composition

Both polyimide tape and Kapton tape are made from polyimide film, which offers excellent heat resistance and electrical insulation. However, Kapton is a brand name for a specific type of polyimide film produced by DuPont. In other words, all Kapton tapes are polyimide tapes, but not all polyimide tapes are branded as Kapton.

2. Brand vs. Generic
Kapton tape is a high-quality, trademarked product developed and manufactured by DuPont, and it’s known for its superior performance in high-temperature and electrical applications. On the other hand, polyimide tape refers to a broader category of tapes made from polyimide film, which may come from various manufacturers. Non-Kapton polyimide tapes may offer similar performance but can vary in specific properties, such as adhesive strength.

3. Temperature Resistance
Both tapes can withstand extremely high temperatures, with Kapton tape typically rated to resist temperatures from -269°C to +400°C. Non-branded polyimide tapes may have a similar range but could differ slightly depending on the manufacturer. It's important to check the specific temperature rating of the tape you're using to ensure it meets your needs.

4. Adhesive Type
The adhesive used in Kapton tape is designed to remain stable under extreme heat, providing a strong, reliable bond without leaving residue when removed. While other polyimide tapes may use similar adhesive formulations, the quality and performance can vary, with some brands offering more specialized or lower-performance adhesives.

5. Electrical Insulation
Both Kapton tape and polyimide tape provide excellent electrical insulation properties, which makes them ideal for use in electronics and electrical applications. However, Kapton tape is widely recognized for its outstanding dielectric properties, ensuring consistent performance in high-voltage environments. Generic polyimide tapes may offer comparable electrical insulation but may not always meet the same rigorous standards as Kapton tape.

6. Cost and Availability
Kapton tape, being a premium brand, tends to be more expensive than other polyimide tapes on the market. Polyimide tapes from other manufacturers might offer a more cost-effective solution, depending on the required application. If performance requirements allow, using a non-branded polyimide tape can be a more economical choice for bulk or industrial uses.