Ultra-Thin Electrical Grade BOPET Film 2-12μm High Dielectric Strength for Capacitor Insulation Motor Winding

This ultra-thin electrical grade BOPET film is a precision-engineered biaxially oriented polyester film designed for demanding electrical insulation and capacitor applications. With dielectric strength exceeding 300 kV/mm and ultra-thin gauges from 2 to 12 μm, the film is the industry choice for metallized film capacitors, motor slot liners and transformer interlayer insulation.

The low dissipation factor of ≤0.005 at 1 kHz minimizes energy loss and heat generation in AC and pulse applications, while Class B (130°C) and Class F (155°C) thermal ratings ensure reliable long-term operation. A smooth surface finish of Ra ≤0.04 μm enables uniform metallization and consistent capacitance, and the film carries UL 94 VTM-0, RoHS and REACH compliance for worldwide electronic component market access.

• Metallized Film Capacitors — Power electronics and renewable energy inverters.
• Motor Insulation — Winding interlayer and slot insulation for industrial and EV motors.
• Transformer Insulation — Interlayer insulation for switch-mode power supplies.
• FPC Base Film — Flexible printed circuit base film for consumer electronics.
• Cable Wrapping — Harness insulation in automotive and aerospace applications.

Q: Are you a manufacturer or trading company?

We are a manufacturer located in Hefei city, Anhui province, China, with our own BOPP and BOPET production lines and an annual capacity of 180,000 tons.

Q: What is your minimum order quantity (MOQ)?

Our typical MOQ is usually 500kg, depending on the exact grade and specification you need.

Q: What is your lead time?

Sample making takes around 3-7 working days. Mass production takes around 10-25 working days after order confirmation.

Q: Do you provide samples? Is there a sample fee?

Yes, we can provide A4 sample sheets for free. For custom samples, a sampling fee may differ based on different specifications.

Q: What shipping terms can you offer?

EXW, FOB, CIF and DDU are available. We also have a dedicated shipping agent to arrange sea, air and express delivery.

Q: What payment methods do you accept?

We usually accept T/T bank transfer with 30% deposit and the balance before shipment. Other payment methods are negotiable.

Q: What gauge tolerance can you hold on ultra-thin film?

We control gauge tolerance within ±3% even at 2-6 μm thickness, which is essential for stable capacitance values in metallized film capacitors.

Anhui Guofeng New Materials Co., Ltd. was established in 1998 and listed on the Shenzhen Stock Exchange (stock code 000859) the same year. As a national high-tech enterprise with about 1,700 employees, we specialize in the R&D and production of plastic films for packaging and electronic information materials.

Our production base operates 4 BOPP film lines, 3 BOPET film lines, 4 heat-sealable film lines and 12 PI film lines, with an annual capacity of 180,000 tons. Products are exported to the Americas, Europe, Southeast Asia, Japan and Korea, serving leading food, beverage and industrial packaging brands.

The company holds ISO9001, ISO14001, ISO45001, QS and ISO/TS16949 certifications, and our films meet FDA and EU food contact standards. 'Guofeng' is recognized as a China Well-Known Trademark and the company has been rated AAA for quality credibility.

• Listed manufacturer (SZSE 000859) with 180,000 tons annual capacity for stable supply
• 4 BOPP production lines with advanced biaxial orientation and online coating control
• Complete quality system: ISO9001/14001/45001 with in-house physical and chemical testing labs
• Strong R&D team supporting OEM/ODM development and custom grade formulation
• SGS-audited factory with export experience to 40+ countries

• ISO9001 Quality Management System
• ISO14001 Environmental Management System
• ISO45001 Occupational Health & Safety
• QS & ISO/TS16949
• FDA & EU food contact compliance