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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.
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 |
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 |
Reinforced resistance | Normal resistance |
(1.5～3)Ω/□ | (1.5～3)Ω/□ |
(2～4)Ω/□ | (6～9)Ω/□ |
Note: If a customer needs other resistance, film width, or margin, please contact us.
Inside core diameter/Tolerance | Outside core diameter/Tolerance | ||
75mm | +1/-0.5mm | 220 280 320 | ±20mm ±20mm ±20mm |
Note: A pair tolerance of outside core diameter ≤2mm. | |||
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 |
Film rolls are packed in plastic bags, vacuumed and put into desiccant for heat sealing.
The Bags are marked with type labels, mark thickness width, free margin width and resistance.
The bags are packed in carton cases.
The cartons are wrapped by wooden cases or reinforced carton.
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