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Single Margin Al or Zn-Al MPET Film With Heavy Edgy

The MPET film base material is 1.9um-12um polyester plain film. The normal width is 620mm.

The high-purity zinc and aluminium are melted, evaporated, and deposited on the base film by a coating machine in a high vacuum state, and a metallized polypropylene film is formed on the surface after an extremely thin metal layer is formed.

The metallized film has a self-healing effect, and it instinctively returns to the electrical performance phenomenon before the breakdown immediately after the partial breakdown of the film dielectric. For the actual production of capacitors, the metallized film is covered on one or both sides of the edge or in the middle to form a blank insulating strip without evaporating metal, which is called the margin, and its width is called the margin. In addition, the resistance of the metal layer on the metallized film in the unit square area is called sheet resistance, expressed in Ω/□ or ohms, and the same city uses sheet resistance to represent the thickness of the metal layer.

Specification of Single Margin Al or Zn-Al MPET Film With Heavy Edgy


Base film

Polyester film

Normal thickness

1.9μm ~12.0μm

Margin type

Single

Coating metal

Aluminum or Zinc-Aluminum alloy

Coating side

Single

Edge structure

Heavy edge


Square resistance: Normal film Width and Margin


Width(mm)

Margin(mm)

Width(mm)

Margin(mm)

Width(mm)

Margin(mm)

7

0.5/1.5

37.5

2.0/2.5

70

2.5

9

1.5

40

2.5

75

2.0/2.5

10

1.0/1.5

42.5

2.5

80

2.5

14

1.0

43

2.0

85

2.5

19

1.5

45

2.0

90

2.0/2.5

21

1.5/2.0

50

2.0/2.5

95

2.5

25

2.5

55

2.5

100

2.0/2.5

26

1.5/2.0

60

2.0/2.5

120

2.5

30

2.0/2.5

62.5

2.5

110

2.0

35

2.5

65

2.5

125

2.0/2.5/5.0


Reinforced resistance

Normal resistance

(2~4)Ω/ohms

(6~9)Ω/ohms

(1~3)Ω/ohms

(4~6)Ω/ohms

(1~3)Ω/ohms

(12~18)Ω/ohms

(2~4)Ω/ohms

(17~23)Ω/ohms

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

175

220

280

320

±25mm

±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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No.1771 Qifeng Road, Tongling City, Anhui Province, China

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