Product Description: BOPP Capacitor Film: High-Performance Dielectric Solutions
Capacitor-grade BOPP film is a leading-edge dielectric material made via an advanced process known as biaxial orientation. Using high crystalline resin in polypropylene capacitor film allows for the creation of ultra-thin capacitor films that are thinner than other similar products yet have superior thickness uniformity. This ensures that capacitor-grade BOPP film will provide stable capacitance and minimal dielectric losses in numerous electric environments.
High-tensile-strength capacitor film exhibits higher levels of mechanical stability compared to lower tensile strength films in both the machine direction (MD) and the transverse direction (TD). High-tensile-strength films provide better mechanical strength when going through high-speed cutting and slitting processes, winding processes and metallising processes. Due to the fact that capacitor-grade BOPP film has a very high volume resistivity, it provides dependable insulation for high voltage systems.
Engineered for maximum reliability for all power electronic applications, this product is an innovative solution for new energy capacitor film. Self-healing capability of the ultra-thin capacitor film enables the recovery of localised breakdown areas within the capacitor film, thus increasing the life cycle of the overall component. Polypropylene capacitor film continues to be the benchmark of high energy efficiency for energy storage and power conversion.
Changsu BOPP Capacitor Film Product Features
a. Biaxially-oriented ultra-thin capacitor film manufactured with precision engineering provides a uniform film to ensure consistent electrical distribution.
b. Biaxially-oriented capacitor-grade BOPP film has thermal stability so that it does not compromise on dielectric strength at elevated temperatures.
c. Low dielectric loss of the polypropylene capacitor film reduces the heat generated and maximises the efficiency of energy discharged.
d. High tensile strength capacitor film is more processable than lower tensile strength films and therefore results in less downtime during capacitor manufacturing and winding.
e. Polypropylene capacitor film manufactured using high-purity resin provides long-term operation of the new energy capacitor film under extreme electrical conditions.
| Thickness μm | Corona | Width mm |
| 2.4~5.8 | Outside | 620 ~ 1040 |
Basic Info.
| Model NO. | CHANGSU® | Thickness | 2.4~5.8 μm |
| Transport Package | Carton Package | Core Size | 6 in |
| Trademark | Changsu | Origin | China |
Applications of Changsu BOPP Capacitor Film:
Electric Vehicles (EVs): DC-link capacitors for motor inverters and onboard chargers.
Solar & Wind Energy: High-capacity film capacitors for power inverters and grid stabilisation.
HVDC Transmission: Large-scale energy transmission systems require capacitor-grade BOPP film.
Industrial Power Electronics: UPS systems, welding equipment and induction heating.
Home Appliances: Energy-efficient motor-run capacitors for HVAC and washing machines.
Product Parameters
| Typical Properties | Test Method | Units | Typical Value | |
| Thickness | - | μm | 2.9 | |
| Average Thickness Tolerance | - | % | ±3.0 | |
| Thickness Individual Value | - | % | ±6.5 | |
| Tensile Strength | MD | ASTM D882 | MPa | 160 |
| TD | 280 | |||
| Electric Strength (50 points) | Average Value | - | V/μm | 550 |
| Minimum Value | 459 | |||
| Shrinkage | MD | 120ºC | % | 4.5 |
| TD | 0.5 | |||
| Surface Roughness | Treated Side | - | μm | 0.06~0.1 |
| Wetting Tension (Initial) | - | mN/m | 41 | |
Volume Resistivity | - | Ω ·m | 3.0×1015 | |
| Relative Permittivity | - | - | 70 | |
| Dissipation Factor | - | - | 2.2*10-4 | |
Everything You Need to Know About BOPP Capacitor Film: High-Performance Dielectric Solutions
Remark:
We release this data to provide a helpful and dependable view of typical film performance; this data should be used for reference purposes only.
As we continue to innovate, Changsu may modify product specifications at any time without prior notice.
What characteristics make Xiamen Changsu's film well-suited for the clean energy market?
Our new energy capacitor film is designed to operate in high-voltage applications. In addition to being able to operate in these high-voltage applications, the use of high crystalline resin in polypropylene capacitor film allows it to perform well in the rapid charge/discharge requirements of solar inverters and EV powertrains, while also providing the high energy density needed for today's green technologies.
How does thickness uniformity impact capacitor performance?
For ultra-thin capacitor films, it is critical to achieve precise thickness control in order to eliminate potential "weak points". Xiamen Changsu's capacitor-grade BOPP film is manufactured using biaxial orientation technology to produce thickness uniformity. Uniformity of the capacitor film eliminates the possibility of early dielectric breakdown and maintains consistent electrical characteristics throughout the film.
Why is high tensile strength important for manufacturers?
High tensile strength capacitor film is required for the high-speed automated production methods. When metallising and winding capacitors, the capacitor-grade BOPP film is subject to large amounts of tension. Therefore, Xiamen Changsu's polypropylene capacitor film is resistant to stretching and breaking, reducing material waste and ensuring a high-quality, tight capacitor winding.
Is this film capable of operating at high temperatures?
Yes, Xiamen Changsu's polypropylene capacitor film is designed for high voltage and high temperature applications. Even under extreme industrial conditions, the ultra-thin capacitor film retains its structure and dielectric strength. These capabilities make the capacitor-grade BOPP film ideal for high-temperature and high-voltage applications such as HVDC transmission and wind power systems.
What are the benefits of the self-healing ability?
The self-healing ability of Xiamen Changsu's capacitor-grade BOPP film greatly increases the reliability of the components. When a minor fault occurs, the polypropylene capacitor film will isolate the area where the fault occurred, preventing complete failure. As a result, the reliability of the new energy capacitor film is one reason why Xiamen Changsu's film is used in long-term infrastructure projects.
Service Advantages
1
Global Supply Chain Resiliency & Logistics
We are a leading producer of capacitor-grade biaxially-oriented polypropylene (BOPP) film and have a highly resilient global supply chain in place to ensure stable lead times for delivery of our ultra-thin capacitor films. We have an optimised logistics system designed specifically for the emerging new energy capacitor film industry, which provides a safe and moisture-free packaging option along with real-time tracking for the guaranteed delivery of ultra-thin capacitor film in pristine condition, regardless of your geographical location.
2
Technical Support & Research & Development (R&D)
Our company provides custom engineering support for customers who require special dielectric properties in their ultra-thin capacitor films. Whether you are looking for a specific gauge of ultra-thin capacitor film or a high tensile strength ultra-thin capacitor film for high-speed winding, our technical staff will visit your site to assist in ensuring that our capacitor-grade polypropylene film meets all your metallization and capacitor design requirements.
3
Quality Control & Digital Traceability
All rolls of our capacitor-grade BOPP film go through extensive testing to determine the dielectric strength and uniformity of the thickness of each film roll. In addition, our company provides complete digital traceability from raw high crystalline resin to finished capacitor-grade polypropylene film. The level of transparency provided by our company enables manufacturers of new energy capacitor film to meet all of the stringent safety and regulatory compliance requirements of the automotive electric vehicle and aerospace industries.
Our Certificates
FSSC 22000
ISO 22000:2018
MSDS
ROHS
REACH
ISO 14001:2015
ISO9001
IATF 16949:2016
About the Company
Xiamen Changsu Industrial Co., Ltd., abbreviated as Changsu, specialises in high-tech R&D, intelligent manufacturing, and application solutions for functional films. Founded in 2009, we currently possess two top-notch film factories located in China and Indonesia, covering an area of 450,000 square meters. Changsu is one of the world's top suppliers of functional films.
Our mission statement is "Better Materials, Better Life." We are committed to green, healthy, and safe film materials and specialise in their R&D, manufacturing, and sales. Our product portfolio includes new energy films, bio-based biodegradable films, functional BOPA films, BOPP capacitor films and BOPP composite current collector films, with some of our products ranking first globally in both production capacity and sales.
We were the first Chinese company to be part of the UN FAO SAVE FOOD initiative and have been actively engaged in this area.
We are committed to driving innovative high-tech materials to build a safer, healthier, and more sustainable world.
Have questions or ready to get started? Get in touch today!
+86-592-6892968