Double sided polyimide tape is a remarkable adhesive tape that offers exceptional bonding strength and versatility. With its unique properties, this tape has become an indispensable tool in various industries. In this blog post, we will explore the features, applications, and benefits of double sided polyimide tape, highlighting its significance in different sectors.

What is Double Sided Polyimide Tape?

Double sided polyimide tape, also known as double coated polyimide tape, is a type of adhesive tape that has a polyimide film as its base material. It is coated with adhesive on both sides, allowing it to bond two surfaces together. The tape is commonly used in applications that require high temperature resistance, electrical insulation, and strong adhesion.

The Composition and Structure of Double Sided Polyimide Tape:

Double sided polyimide tape consists of three main components: the polyimide film, the adhesive layer, and the release liner. The polyimide film provides the tape with excellent thermal stability and mechanical strength. The adhesive layer, which is typically made of silicone or acrylic, ensures strong bonding between surfaces. The release liner protects the adhesive until the tape is ready to be applied.

Key Features of Double Sided Polyimide Tape:

High Temperature Resistance: The polyimide tape can withstand extreme temperatures, ranging from -269°C to 400°C (-452°F to 752°F), making it suitable for applications in harsh environments.

Excellent Electrical Insulation: The tape offers exceptional electrical insulation properties, preventing electrical leakage and short circuits.

Strong Adhesion: The adhesive used provides a reliable and long-lasting bond between surfaces.

Chemical Resistance: The tape is resistant to various chemicals, including solvents, oils, and acids, ensuring its durability in challenging environments.

Easy Application and Removal: The polyimide tape can be easily applied and removed without leaving residue or damaging the surfaces.

Applications of Double Sided Polyimide Tape:

4.1 Electronics Industry:

In the electronics industry, the polyimide tape is widely used for bonding flexible printed circuits (FPC) and rigid printed circuit boards (PCB). It is also used for attaching electronic components, such as resistors, capacitors, and integrated circuits. Additionally, the tape is used for coil wrapping and insulation in transformers and motors.

4.2 Automotive Industry:

The automotive industry benefits from the polyimide tape for wire harnessing and bundling. It is also used for mounting sensors, switches, and control modules. In engine compartments and exhaust systems, the tape provides thermal management solutions.

4.3 Aerospace Industry:

In the aerospace industry, the polyimide tape plays a crucial role in the assembly and bonding of aircraft components. It is used for insulation and protection of wiring and cables, as well as for attaching thermal insulation materials.

4.4 Medical Industry:

The medical industry relies on the polyimide tape for secure fixation of medical devices and sensors. It is also used for wound dressing and closure, as well as for attaching electrodes and sensors in medical equipment.

4.5 Other Applications:

The polyimide tape finds applications in various other industries. It is used for heat sink attachment in electronic devices, LCD panel assembly in display manufacturing, and general-purpose bonding in different sectors.

Benefits of Double Sided Polyimide Tape:

5.1 High Temperature Resistance:

The polyimide tape maintains its adhesive properties even at extreme temperatures, ensuring reliable performance in demanding applications.

5.2 Excellent Electrical Insulation:

The tape’s electrical insulation properties prevent electrical leakage and ensure the safety and reliability of electronic devices.

5.3 Strong Adhesion:

The polyimide tape offers strong bonding strength, allowing it to securely attach various materials together.

5.4 Chemical Resistance:

The tape’s resistance to chemicals ensures its durability and performance in harsh environments.

5.5 Easy Application and Removal:

The polyimide tape can be easily applied and removed without leaving residue or damaging the surfaces, saving time and effort.

Factors to Consider When Choosing Double Sided Polyimide Tape:

6.1 Temperature Range:

Select a tape that can withstand the specific temperature requirements of your application.

6.2 Thickness:

Consider the thickness of the tape based on the bonding requirements and the surfaces to be joined.

6.3 Adhesive Type:

Choose an adhesive type that suits your application, such as silicone or acrylic, based on factors like bonding strength and compatibility with the materials involved.

6.4 Substrate Compatibility:

Ensure that the tape is compatible with the surfaces it will be applied to, considering factors like surface texture, cleanliness, and chemical composition.

Proper Handling and Storage of Double Sided Polyimide Tape:

Store in a Cool, Dry Place: It is important to store the polyimide tape in a cool and dry environment. Exposure to high temperatures or humidity can affect the adhesive properties of the tape. Ideally, the storage temperature should be between 15°C to 25°C (59°F to 77°F).

Avoid Direct Sunlight: Direct sunlight can cause the tape to degrade and lose its adhesive strength. Store the tape away from windows or any other sources of direct sunlight.

Protect from Extreme Temperatures: The polyimide tape is known for its high temperature resistance, but extreme temperatures can still affect its performance. Avoid storing the tape in areas with temperatures outside the recommended range of -20°C to 40°C (-4°F to 104°F).

Keep Away from Moisture: Moisture can compromise the adhesive properties of the tape. Store the tape in a moisture-free environment and avoid exposing it to water or high humidity levels.

Handle with Clean Hands: Before handling the tape, make sure your hands are clean and free from any oils or contaminants. Oils or dirt on your hands can transfer onto the tape and affect its adhesive strength.

Use the Release Liner: The release liner protects the adhesive side of the tape until it is ready to be applied. When storing the tape, make sure to keep the release liner intact to prevent dust or debris from sticking to the adhesive.

Avoid Bending or Folding: The polyimide tape should be stored in a way that prevents bending or folding. Bending or folding the tape can cause creases or wrinkles, which may affect its performance during application.

Check Expiration Date: The polyimide tape typically has a shelf life. Before using the tape, check the expiration date to ensure its adhesive properties are still intact. Expired tape may not provide the desired bonding strength.

Conclusion:

Double sided polyimide tape is a versatile adhesive solution that offers exceptional bonding strength, high temperature resistance, and excellent electrical insulation. Its wide range of applications in various industries highlights its significance and reliability. By understanding the features, benefits, and factors to consider when choosing this tape, you can make informed decisions for your specific bonding needs.