Single Margin Zn-Al MPP Film with Ramp Resistance (Graduated Rs) for High-Voltage Capacitor Safety. — Engineered Ramp Resistance (Graduated Rs) Zn-Al MPP film for optimized energy density and safety clearing.

Single Margin Zn-Al MPP Film (Ramp Resistance)

A coating machine uses a high vacuum to melt, evaporate, and deposit high-purity zinc and aluminum on the base film. After an incredibly thin metal layer has been created, a metalized polypropylene film is created on the surface.
After the partial breakdown of the film dielectric, the metalized film has a self-healing function that causes it to naturally revert to the electrical performance phenomenon before the breakdown. The metalized film is covered on one or both sides of the edge or in the center to create a blank insulating strip without evaporating metal, known as the margin, and its width is referred to as the margin in the actual fabrication of capacitors.

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Single Margin Zn-Al MPP Film (Heavy Edge Design)Single Margin Zn-Al MPP Film (Ramp Resistance)Single Margin Zn-Al MPP Film (High Resistance)Al or Zn/Al MPP Film (Multiple Series Margin)Segmented MPP Film With Diamond Pattern, T Pattern, 1/2 Pattern Wave Slitting Zinc MPP Film

Plain Slitted Polypropylene Film Plain Slitted Polyester Film

Plain Slitted Polyester Film

Basic Specification

Base film	Polypropylene film
Normal thickness	2.0μm ~12.0μm
Margin type	Single
Coating metal	Aluminum or Zinc-Aluminum alloy
Coating side	Single
Edge structure	Heavy edge

Square Resistance

Reinforced resistance	Normal resistance
(2～4)Ω/□	(6～25)Ω/□
(2～4)Ω/□	(6～20)Ω/□
(2～4)Ω/□	(6～30)Ω/□
(1～3)Ω/□	(4～26)Ω/□

Normal film Width and Margin

Width (mm)	Margin (mm)	Width (mm)	Margin (mm)
45	2.5	70	2.5
50	2.0/2.5	75	2.0/2.5
55	2.0/2.5	80	2.0/2.5
60	2.0/2.5	85	2.0/2.5
62.5	4	100	2.0/2.5
65	2.5	125	2.0

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

Single Margin Zn-Al MPP Film (Ramp Resistance)

Single Margin Zn-Al MPP Film (Ramp Resistance)

Metallized Film

BOPP Film

Capacitor