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Single Margin Zn-Al MPET Film With High Resistance

The base for MPET films is the 2um-12um polyester plain film. The standard width is 620mm.

High-purity zinc and aluminum are melted, evaporated, and deposited on the base film using a coating process under a strong vacuum. A metalized polypropylene film is then produced on top of the very thin metal layer.

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


Specification of Single Margin Zn-Al MPET Film With High Resistance

Base film

Polyester film

Normal thickness

1.9μm ~12.0μm

Margin type

Single

Coating metal

Zinc-Aluminum alloy

Coating side

Single

Edge structure

Heavy edge


Square resistance: Normal film Width and Margin


Reinforced resistance

Normal resistance

(2~4)Ω/ohms

(30~555)Ω/ohms

(40~65)Ω/ohms

(50~80)Ω/ohms

(70~100)Ω/ohms

(90~120)Ω/ohms



Width(mm)

Margin(mm)

Width(mm)

Margin(mm)

37.5

2.0/2.5

90

2.0/2.5

50

2.0/2.5

95

2.0

55

2.0/2.5

100

2.5

60

2.0/2.5

110

2.5

67.5

2.0

115

2.5

75

2.0/2.5



Note: If a customer needs other resistance, film width, or margin, please contact us.


Inside/outside core diameter:


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.


Specifications of the metalized polyester film:


Properties

Unit

Typical value

Density

g/cm3

1.4

Thickness

µm

<5

5~12

≥12

Tensile Strength

MD (MPa)

≥84

≥108

≥120

Elongation at Break

MD (%)

≥22

≥33

≥44

Elastic Modulus

MD (MPa)

3500

Break-down Voltage

V/µm

≥200

( 23°C, DC )

≥250

( 23°C, DC )

Heat Shrinkage

MD (%)

≤2.5 ( 150°C, 10min)

Surface Roughness

µm

0.095

Melting Point

256

Volume Resistivity

Ω.m

>1015

( 23°C, Humidity 50%)

Dielectric Constant


3.2

(20℃,1KHz)

Dissipation Factor

-

≤60×10-4

(20℃,1KHz )

RC

ΩF

≥1×104

Products

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