Al or Zn/Al MPP Film (Multiple Series Margin)
Polypropylene plain film in the range of 2um to 12um serves as the foundation for MPP films. The standard width is 620mm.
A coating machine uses a high vacuum to melt, evaporate, and deposit high-purity zinc and aluminum on the base film. Following the formation of an incredibly thin metal layer, a metalized polypropylene film is created on the surface.
Basic Specification
| Base film | Polypropylene film |
| Normal thickness | 2.0μm ~12.0μm |
| Margin type | Many single |
| Coating metal | Aluminum or Zinc-Aluminum alloy |
| Coating side | Single |
| Edge structure | Heavy edge |
Square Resistance
| Reinforced resistance | Normal resistance |
| (1.5～3)Ω/□ | (1.5～3)Ω/□ |
| (2～4)Ω/□ | (6～9)Ω/□ |
Normal film Width and Margin
| Width (mm) | Margin (mm)B1 | Width (mm)B2 |
| 75 | 3.0 | 2.0 |
| 96 | 7.5 | 15.0 |
| 96 | 1.5 | 15.0 |
| 97 | – | 15.0 |
| 97 | 8.0 | 15.0 |
Note: If you need other resistance, film width or margin, please send us information, thank you.
Inside/Outside Core Diameter
| Inside core diameter | Tolerance | Outside core diamete | Tolerance |
| 75mm | +1/-0.5mm | 220mm | ±20mm |
| 75mm | +1/-0.5mm | 280mm | ±20mm |
| 75mm | +1/-0.5mm | 320mm | ±20mm |
Note: A pair tolerance of outside core diameter <=2mm
Specifications of Metallized Polypropylene Film
| Properties | Unit | Typical value |
| Density | g/cm3 | 0.905±0.005 |
| Thickness | µm | 2.0 ～ 12 |
| Tensile Strength | MD (MPa) | ≥100 |
| Elongation at Break | MD (%) | 20～200 |
| Elastic Modulus | MD (MPa) | 2800 |
| Heat Shrinkage | MD (%) | ≤5 ( 120°C, 10min) |
| Wetting Tension | mN/m | 38 (Corona treated side) |
| Surface Roughness | µm | 0.08 |
| Melting Point | ℃ | 172 |
| Volume Resistivity | Ω.m | ＞1015 |
| Break-down Voltage | V/µm | ≥350 ( 23°C, DC ) |
| Dielectric Constant | 2.2 (20℃，1KHz) | |
| Dissipation Factor | ≤4×10-4 (20℃，1KHz ) | |
| RC | ΩF | ≥5×104 |