PV Cells Polyester Film

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Product Description:

Detailed Introduction of PV Cells Polyester Film

PET or polyethylene terephthalate film is a thermoplastic polymer commonly referred to as polyester film. Like most thermoplastics, PET films can be biaxially oriented or bubble extruded. Polyester film is one of the most common substrates used in the converting industry because of its balance of properties in relation to other thermoplastic polymers.

 

Main Application of PV Cells Polyester Film

TPT and TPE are the main material for photovoltaic cells back sheet, which include three layers. P means polyester film.

The good water vapour barrier property, excellent electrical properties and robust "cut-through" and tear resistance makes polyester film become the important component of the TPT and TPE.

The normal thickness used on TPT is 250um and the roll length of the polyester film is adjustable.

Physical Property and Spec of PV Cells Polyester Film

Properties for control reports

Standard No.

Average Value

Appearance

Transparent, side whipstitch good, no broken woven, untained.

Thickness

ASTM D374

250

um

Tensile Strength

ASTM D882

MD

179

 (MPa)

ASTM D882

TD

191

Elongation At Break

(MPa)

ASTM D882

MD

170

ASTM D882

TD

130

Haze (%)

ASTM D1003

 

4.54

Dimensional Stability (%)

MD 

1.0

TD

0.1

Electrical Strength

 

73

(V/µm)

Chromaticity Value

 

L

93.56

A

0.02

B

0.74

Remark: MD is machine direction, TD is transverse direction. The values above can not be understood as guaranteed values. They are only the basic test values for your reference. If required can be adjusted according to your requirements. Listed are the average test values token from 6.7m and 8.7m width jumbo roll. 

 

Typical Advantage of PV Cells Polyester Film

Three-layer co-extrusion structure

High tensile strength and good toughness

Wetting tension with corona treated side can reach 58 dyne. Good adhesive for metallized layer, printing ink and laminated layer

Better brightness after metallizing because of its higher transparency

Be applicable for high speed printing

Stable Quality.

 

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ISO9001-2008

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Sample is ready for supply as per requirement.

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