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25um Thickness PI Film with High Thermal Stability and Low Relative Permittivity
| MOQ: | 100 rolls |
| Price: | Negotiable |
| Standard Packaging: | Heat-seal packaging first,then put them into the carton |
| Delivery Period: | 7-10 days |
| Payment Method: | T/T |
| Supply Capacity: | 1000 rolls |
25um PI Film
,No Adhesive PI Film
,Amber pi films
PI25 is a 25μm pure polyimide (PI) film, made via polycondensation and imidization stretching. It features high temperature resistance, excellent electrical strength, low shrinkage and good dielectric properties. Supplied in rolls with neat edges, it’s ideal for high-performance electronic and industrial applications.
- Insulation material for high-temperature electronic components and circuit boards
- Base film for flexible printed circuits (FPC) and flexible flat cables (FFC)
- Thermal insulation and electrical protection for aerospace and automotive electronics
- Substrate for adhesive tapes and coating films in high-temperature working environments
- Insulation layer for motor, transformer and coil winding with high heat requirements
- Protective film for precision electronic devices during high-temperature processing
| Item | Specification | Test Standard |
|---|---|---|
| Total Thickness | 25±3μm | GB/T7125-2014 |
| Water Absorption | <4.0% | / |
| Relative Permittivity (50HZ) | ≤3.9 | / |
| Dielectric Loss Factor (50HZ) | ≤4.0×10⁻³ | / |
| Temperature Resistance | 288±5℃ for 10s (Pass) | Oven Test |
| Electric Strength | Avg. ≥50MV/m; Individual ≥40MV/m | / |
| Density | 1420±20 Kg/m³ | / |
| Shrinkage (200℃) | ≤0.3% | Oven Test |
Sanfeng Win New Materials (Jiangsu) Co., Ltd. (Sanfeng Win), founded in 2010, is a private enterprise integrating R&D, production, and sales of adhesive products. With industry-leading coating technology and a professional R&D team, we specialize in high-temperature resistant tapes, optical protective films, new energy battery blue films, aerogel packaging hot-pressing films, photovoltaic perforated tapes, and backsheets. Our products are widely used in electronics, mobile phone screens, PCB, powder spraying, insulation, die-cutting, printing plastics, battery cell aluminum case wrapping, FPC, new energy, and photovoltaic industries. Equipped with precision coating equipment, a high-purification clean workshop, and a multi-functional composite precision coating production line, we provide customers with R&D, design solutions, and market application feedback, enabling independent mass production services to ensure product quality.
1.What is the core material of PI25 film?
It is a pure polyimide (PI) film, also known as KAPTON film.
2.What is the standard core of PI25 film rolls?
The standard core is a rigid paper tube with an inner diameter of 76 mm, custom options available via negotiation.
3.What are the storage conditions for PI25 film?
Store in a cool place (18-25℃, humidity 40-70%), avoid direct sunlight.
4.What is the maximum shelf life of PI25 film?
The maximum usable period is 6 months under standard storage conditions.
5.How is PI25 film packaged for delivery?
It’s wrapped in plastic film and foam, supported by MDF boards, packed in double corrugated cartons with packing belts.
6.What are the test conditions for PI25 film's performance?
Test at 23±1℃, humidity 50±5% with steel plate adherend, 300mm/min peeling speed and 180° peeling angle.
