Al or Zn/Al MPP Film (Multiple Series Margin)

High-precision Single Margin Zn-Al Metallized Polypropylene (MPP) Film with Heavy Edge design for capacitor manufacturing.

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.

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Basic Specification

Base filmPolypropylene film
Normal thickness2.0μm ~12.0μm
Margin typeMany single
Coating metalAluminum or Zinc-Aluminum alloy
Coating sideSingle
Edge structureHeavy edge

Square Resistance

Reinforced resistanceNormal resistance
(1.5～3)Ω/□(1.5～3)Ω/□
(2～4)Ω/□(6～9)Ω/□

Normal film Width and Margin

Width (mm)Margin (mm)B1Width (mm)B2
753.02.0
967.515.0
961.515.0
97–15.0
978.015.0

Note: If you need other resistance, film width or margin, please send us information, thank you.

Inside/Outside Core Diameter

Inside core diameter ToleranceOutside core diameteTolerance
75mm+1/-0.5mm220mm±20mm
75mm+1/-0.5mm280mm±20mm
75mm+1/-0.5mm320mm±20mm

Note: A pair tolerance of outside core diameter <=2mm

Specifications of Metallized Polypropylene Film

PropertiesUnitTypical value
Densityg/cm30.905±0.005
Thicknessµm2.0 ～ 12
Tensile StrengthMD (MPa)≥100
Elongation at BreakMD (%)20～200
Elastic ModulusMD (MPa)2800
Heat ShrinkageMD (%)≤5 ( 120°C, 10min)
Wetting TensionmN/m38  (Corona treated side)
Surface Roughnessµm0.08
Melting Point℃172
Volume ResistivityΩ.m＞1015
Break-down VoltageV/µm≥350 ( 23°C, DC )
Dielectric Constant2.2  (20℃，1KHz)
Dissipation Factor≤4×10-4 (20℃，1KHz )
RCΩF≥5×104