TPEE film (thermoplastic polyester elastomer film) is mainly used in the field of electronics and electrical appliances due to its high strength, weather resistance, and dynamic mechanical properties. It is mainly applied in the following scenarios:

1、 Protection of high-frequency electronic components

5G antenna cover and high-frequency connector

TPEE film is used for 5G equipment antenna covers and high-frequency connector housings due to its low dielectric constant (adjustable) and weather resistance, ensuring signal transmission stability and reducing electromagnetic interference.

Flexible circuit substrate

The high elastic modulus (excellent tensile strength) and bending resistance make it suitable for flexible printed circuit board (FPC) substrates, adapting to the dynamic bending requirements inside equipment.

2、 Acoustics and Wearable Devices

Headphone diaphragm and components

By utilizing high resilience and low hysteresis loss characteristics, TPEE film is used to enhance the acoustic performance of high-end headphone diaphragms, and is also applied to TWS headphone soft rubber components to improve wearing comfort.

Smart wearable devices

The sweat corrosion resistance makes it suitable for components such as smart watch straps, folding screen hinge buffer layers, etc., balancing durability and tactile requirements.

3、 New energy and high reliability components

Insulation and Sheath of High Voltage Cables

High temperature resistance (-40 ℃~150 ℃), chemical corrosion resistance, and flame retardancy (compliant with UL certification) make it the core material for insulation layers of high-voltage cables in new energy vehicles, reducing the risk of electrical corrosion.

Battery sealing and sensor protection

Used as a sealing component for new energy battery packs to prevent electrolyte leakage; As an elastic component of automotive sensors, it ensures response accuracy and long-term reliability.

4、 Structural components and interface optimization

Electronic device protection structure

High impact resistance (significantly better compression modulus than TPU) is used for mobile phone anti drop protective cases and folding device pivot buffers, improving device anti drop performance and opening and closing life.

Precision connector sheath

The anti plug wear and anti-static characteristics are applied to the USB/HDMI interface sheath to reduce the risk of contact failure.

Core performance support

Mechanical performance: High elastic modulus (compression modulus far exceeding TPU) supports lightweight design of load-bearing components.

Environmental tolerance: resistant to oil, high temperature, UV aging, suitable for harsh working conditions.

Dynamic characteristics: Excellent fatigue resistance (minimal hysteresis loss), suitable for high-frequency motion scenarios.

In summary, TPEE film has revolutionized the high-frequency protection, acoustic components, new energy security, and structural design of electronic devices through its material properties, driving product iteration towards lightweight and high reliability.