Segmented MPP Film With Diamond Pattern, T Pattern, 1/2 Pattern

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. The same city also uses sheet resistance to denote the thickness of the metal layer and is used to describe the resistance of the metal layer on the metalized film in the unit square area. According to customer requirements, safety films can be made in a variety of parameters.

Specification of Segmented MPP Film With Diamond Pattern, T Pattern, 1/2 Pattern

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: Normal film Width and Margin

Diamond Pattern		T-Pattern	1/2 T-Pattern
Width (mm)	Width (mm)	Width (mm)	Width (mm)
25	60	30	37.5
30	75	37.5
35	85	50
37.5	90	75
40	100
45	120
50

Reinforced resistance	Normal resistance
(2～4)Ω/□	(6～9)Ω/□
(1～3)Ω/□	(4～6)Ω/□
(1～3)Ω/□	(12～18)Ω/□
(2～4)Ω/□	(17～23)Ω/□

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

Note: A pair tolerance of outside core diameter ≤2mm.

Specifications of metalized 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

Packing of Segmented MPP Film With Diamond Pattern,T Pattern, 1/2 Pattern

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.