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BOPP Film (Dielectric Film in Microwave Oven Capacitor)

  • Application

One of our specialties is the production of BOPP dielectric films applied in high voltage microwave capacitors, including microwave oven capacitor films, microwave therapy capacitor films, and high voltage microwave reactor capacitor films. These films are produced in a thickness range of 11~18μm, with a working voltage range of 1800~2200V and the capacitance is typically 0.8~1.2μF.

Size Parameter:
Thickness: 11~18μm
Width: 30mm~920mm
External diameter of film roll(mm): ≤300
Internal diameter of film roll core(mm): 76
The Bopp films are satisfied with standards of IEC & GB.

Technical Parameters:
Description of Goods: single side hazy polypropylene film Production Date:27,May.2017
Spec:11.8u (By weight method) Test date:27,May.2017
Testing Temperature(℃):23 Relative Humidity(%):55
Batch No.:17A-236
Standard: GB/T 13542.3-2006 and Internal Control Standard
Serial No. Testing Item Unit Standard requirement Test result Item estimation
1 Average thickness µm 11.8 11.81 Qualified
2 Thickness- deviation Average deviation of each batch of BOPP film % ±2 0.1 Qualified
Max value in each batch of BOPP film µm 11.90 Qualified
Min value in each batch of BOPP film µm 11.70 Qualified
3 Tensile strength MD MPa ≥120 143.5 Qualified
TD ≥200 244.7 Qualified
4 Elongation of break MD % ≥100 140.7 Qualified
TD ≥30 52.22 Qualified
5 Thermal shrinkage (120℃15min) MD % ≤4.0 3.12 Qualified
TD ≤1.0 0.08 Qualified
6 Dielectric strength (by 50 point electrode method) Average V/µm ≥550 598 Qualified
Min ≥500 535 Qualified
7 Dielectric constant 48-62Hz 2.2±0.2 2.2 Qualified
8 Dielectric loss factor tgδ 48-62Hz ≤2.0×10-4 1.09×10-4 Qualified
9 Volume resistivity ρv Ωm ≥1.0×1015 2.1×1015 Qualified
10 Surface roughness AK µm 0.40±0.20 0.247 Qualified
CR 0.284 Qualified
11 Space factor % 10±2.0 9.2 Qualified
12 Weak point Piece ≤0.1 0 Qualified
Inspecting Dept QC Dept Conclusion All items comply with the requirements of standard
Inspector H.H.FANG Verified By TIGER LV

The BOPP films are packaged in a tray. The outside of the package is wrapped with a film, while the internal films are protected by three waterproof and dustproof layers. Package transport and stevedoring are all mechanized.

Ningbo Great Southeast Wanxiang Science and Technology Co.,Ltd. supplies BOPP capacitor films with superior dielectric properties. DDN has employed four BOPP capacitor film automatic production lines from Bruckner company (Germany) featuring excellent performance in winding capacity, dielectric breakdown strength and saturating properties. Additionally, DDN is equipped with stable production lines ensuring large annual output and JIT delivery. We also utilize highly advance testing instruments and professionals to guarantee the rate of BOPP capacitor films.

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