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Anti snail trails series EVA film

F406PS&F806PS


Product introduction

The “snail trails” phenomenon has drawn considerable attention in the PV solar module industry.  It can be observed as a kind of partial Ag contact finger discoloration on the micro-cracked cells of PV modules in the field. F•RST® F406PS and F806PS EVA are specifically designed to relieve the snail trails phenomenon by its antioxidant characteristics and barrier properties. The F406PS and F806PS EVA also exhibit excellent durability and PID resistance.


Anti snail trails properties

The certification result by PI Photovoltaic Institute: no visible snail trails observed on a crystalline silicon PV module encapsulated by F406PS/F806PS EVA after two cycles of PI test sequences.


Performance parameter

Properties Test Method Units F406PS F806PS
General gram weight FST Method g/m2 430±20 390±20
Thickness  FST Method mm 0.55±0.05 0.50±0.05
Length FST Method m/roll 150 150
Width FST Method mm Customization0/+7 Customization0/+7
Density ASTMD792 g/cm3 0.95-0.96 0.95-0.96
Melting range FST Method 40-80 40-80
Shrinkage Rate(120,3min) GB/T29848 MD% <3.0 <3.0
TD% <1.5 <1.5
UV-Cutoff Wavelength FST Method nm -- 360
Transmittance 1100nm-380nm GB/T29848 % >91 >91
380nm-290nm % >80 <30
Gel content GB/T29848 Gel% >75 >75
Volume Resistivity GB/T29848 Ω·cm >1.0×1015 >1.0×1015
Strength of Peeling from Glass GB/T29848 N/cm >60 >60
Strength of Peeling from TPT GB/T29848 N/cm >40 >40
Note: The gram weight, thickness, length and width of product can be customized.