Plain Slitted Polyester Film

High-clarity plain slitted polyester (BOPET) base film for capacitor manufacturing.

Plain Slitted Polyester Film

It is made of imported alcohol phthalate, which is biaxially stretched. It has the characteristics of high tensile strength, high dielectric strength, high dielectric loss, high loss, high thickness, and large point resistance. It has been widely used in electrical appliances for introduction properties and insulating interlayers. Mainly used in metallized film appliances and arrow-type appliances, such as energy-saving lamps and appliances, and live broadcast packages.

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Inside/Outside Core Diameter

Inside core diameter ToleranceOutside core diameteTolerance
75mm+1/-0.5mm175mm±25mm
75mm+1/-0.5mm220mm±20mm
75mm+1/-0.5mm280mm±20mm

Specifications of Metallized Polypropylene Film

ItemUnitTypical valueTesting Standard
Densityg/cm31.400±0.005GB/T 13542.2-2009/11
Melting Point℃256GB/T 13542.2-2009/23
Tensile StrengthMD (MPa)200GB/T 13542.2-2009/11
Tensile StrengthTD（MPa）280GB/T 13542.2-2009/11
Elongation at BreakTM(%)100GB/T 13542.2-2009/11
Elongation at BreakTD(%)90GB/T 13542.2-2009/11
Elastic ModulusMD (MPa)3500GB/T 13542.2-2009/11
Elastic ModulusTD（MPa）3500GB/T 13542.2-2009/11
Thermal ShrinkageMD（%）2.0GB/T 13542.2-2009/23
Thermal ShrinkageTD（%）1.0GB/T 13542.2-2009/8
Surface Roughnessμm0.085±0.020SKC Method
Dielectric strength (average)V/μm450GB/T 10006-1988
Friction coefficient (static/dynamic)0.3-0.5GB/T
13542.2-2009/17.1
Relative Permittivity3.2GB/T 13542.2-2009/17.1
Volume ResistivityΩ.m>1015GB/T 13542.2-2009/16.1
Dielectric Loss Factor5.0×103GB/T 13542.2-2009/17.1