Polyimide tape is a special type of adhesive tape made from polyimide film as the base material, coated with high-performance silicone pressure-sensitive adhesive or acrylic pressure-sensitive adhesive. Polyimide (PI) itself is a high-performance polymer material, renowned for its excellent high-temperature resistance, electrical insulation, and chemical stability. This makes tapes based on this material the preferred solution in extreme environments.
Why is it called "golden tape"?
The value of polyimide tape stems from its combination of superior performance in almost demanding environments:
Excellent resistance to both high and low temperatures: It can tolerate temperatures of 300° or higher for short periods of time without melting, dripping, or producing smoke. The typical long-term operating temperature range is between 260°C.
Outstanding electrical insulation performance: Due to its exceptionally high dielectric strength, volume resistivity, and surface resistivity, this material is ideal for protecting motors, coils, and circuit boards.
Excellent chemical stability: able to withstand the majority of oils, acids, and solvents while maintaining consistency of performance under challenging chemical conditions.
Excellent mechanical strength and dimensional stability, combined with extremely low shrinkage, even at high temperatures, and precise positioning in precise applications. Additionally, it is resistant to punctures and tearing.
The majority of polyimide tapes have the UL 94 V-0 flame-retardant certification, which meets standards for the safety of electronic products.
Key application areas: The "unsung hero" of cutting-edge industries
The applications of polyimide tape cover almost all industries that have stringent requirements for reliability and performance:
Electronics and semiconductor manufacturing:
PCBs (Printed Circuit Boards): High-temperature masking protection during wave soldering and reflow soldering processes to prevent solder bridging.
Flexible Printed Circuits (FPCs): Used as reinforcement boards, insulation layers, and fixing materials in the manufacturing process.
Coils and transformers: Interlayer insulation and bundling of windings in motors, inductors, etc.
Smartphones: Used for battery insulation, display screen fixing, and other internal precision bonding.
Aerospace and automotive industries:
Bundling and insulation of aircraft wiring harnesses.
Cable protection and high-temperature component fixing in automotive engine compartments. Industrial Manufacturing:
Masking during high-temperature spray painting and powder coating processes.
Anti-stick protection for high-temperature rollers in heat sealing machines, plastic welding equipment, etc.
New Energy Field:
Insulation and fixation of lithium battery cell tabs.
High-temperature process protection during solar panel production.
Production Process and Technology
As a core manufacturer, we use precision coating technology to produce high-quality polyimide tapes:
Substrate Treatment: High-quality polyimide film is selected and treated with corona or primer treatment to enhance adhesion.
Precision Coating: In a dust-free workshop, specially formulated silicone or acrylic adhesive is evenly coated onto the film, with thickness precisely controlled to the micron level.
Curing and Winding: To guarantee that the adhesive layer functions at its best, the tape is properly cured in a multi-stage stepped oven before being twisted into big master rolls.
Slitting and Testing: In accordance with customer requirements, the tape is cut into various widths, and thorough performance testing is carried out.
One of the main components of contemporary high-tech production is polyimide tape, and the final product's dependability and safety are directly impacted by its performance. As a manufacturer with a strong foundation in the special tape industry, we are dedicated to offering clients expert technical assistance and application solutions in addition to a wide selection of premium polyimide tape goods.
