Polyester Film

Main Parameters: Model: 6020,6021 Insulation class:E Class (120℃) Color：6020 transparent，6021 translucent Width: 1010mm Thickness:0.025mm-0.35mm

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Description

Description of Polyester Film：

Polyester film - (PET Film) exhibits superior strength, heat resistance, and excellent insulating properties. The unique qualities of Mylar® film (PET Film) created new consumer markets in magnetic audio and video tape, capacitor dielectrics, packaging, and batteries.
Polyester Film is made from Polyethylene terephthalate by casting & Biaxially oriented.
About the polyester film, Yanan has two different types:
6020-Polyester Film For Electrical Insulation (Transparent)
6021-Polyester Film For Electrical Insulation (Milky white)
The different between the 6020 and 6021:
6020/6021 polyester film is biaxially oriented polyethylene terephthalate (PET)film.6020 is transparent film,6021 is milky white.
6020 polyester film always as a laminate with other substrates.6021 can be used as an electrical insulation directly, it has good dielectrical and high mechanical properties.
Features of the Polyester Film

—Good mechanical properties and folding tolerance
—Resistant to oil, fat, dilute acid and alkali, most solvent.
—Has excellent temperature tolerance.
—Low gas and vapor permeability, and good resistance to gas, water,
oil and odor.
—High transparency and glossy, also can block ultraviolet ray.
—Can be directly used in food packing since it is non-toxic, unscented with good sanitary security.
—Model: 6020,6021
—Insulation class:E Class (120℃)
—Color：6020 transparent，6021 translucent
—Width: 1010mm
—Thickness:0.025mm-0.35mm
—The Class E 6020 transparent and 6021 translucent polyester film have been approved by UL (NO.: E310670) ,ROHS and REACH test.

Item		Unit	Index value
Nominal thickness		um	125	150	190	250	300	350
Thickness deviation		um	±10%
Wide format		m	1m, Special width can cut
Density		Kg/m3	1400±10
Melting point		℃	≥256
Relative permittivity	48Hz～62Hz	/	2.9～3.4
	1KHz		3.2±0.3
Dielectric loss	48Hz～62Hz		≤3.0×10-3
factor	1KHz	/	≤6.0×10-3
Volume resistivity		Ω·m	≥1.0×1014
Surface resistivity		Ω	≥1.0×1013
Electrolytic corrosion	Visual	/	A1
	Stretched wire	％	≤2
Dimensional stability at high	Under tension		≥200
temperature	Under pressure	℃	≥200
Thickness		um	100～250				＞250
Tensile strength (MD or TD)		MPa	≥140				≥110
minimum
Elongation at break (MD or TD)		%	≥80				≥80
minimum
Shrinkage（lengthways or crosswise		%	≤3.0				≤2.0
maximum
Nominal thickness		um	125	150	190	250	300	350
Power frequency electrical strength		V/um	80	75	65	60	55	50
Long-term heat resistance		℃	T1≥130；End point standard: tensile strength maintains
			the starting value10%