6020/6021 Polyester film is biaxially oriented polyethelene terephthalate (PET) film.
6020 is a transparent film. 6021 is a milky white film.
Characters 
It is Class E insulating material.This product has good dielectrical and high mechanical properties.
Application
It is suitable for electrical insulation, such as slot insulation, Interphase insulation and liner insulation in electric motor, wrapping insulation for coils and cables, as well as producing insulating flexible composite material. 
Specification
Nominal thickness(mm):0.025, 0.050, 0.075, 0.10, 0.125 , 0.188, 0.250, 0.300, 0.350

Nominal width(mm):1000

Properties	Units		Values
Tensile strength(MD and TD)	25μm～100μm >100μm～190μm >190μm	mpa	≥150 ≥140 ≥110
Elongation at break (MD and TD)	25μm～50μm >50μm～350μm	%	≥60 ≥80
Shrinkage (MD and TD)	25～190μm >190μm	%	≤3.0 ≤2.0
Volume resistivity		Ω·M	≥1.0×1014
Relative dielectric constant   (50Hz)			2.9～3.4
Dielectric dissipation factor  (50Hz)			≤5.0×10-3
Density		kg/m3	6020	6021
			1390±10	1400+10-20
Melting point		℃	≥256
Surface resistivity		Ω	≥1.0×1013
Electrolytic corrosion	Ocular estimate	Class	A1
	Metallic conductivity tensile Strength method	%	≤2
Dimensional stability  in high temp.	With tension	℃	≥200
	With pressure		≥200

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