Semi Flexible Solar Panel Encapsulation Material ETFE Film+ EVA Film + Back Sheet Lamination Solar cell Panel Roll Package

Category : Consumer Electronics | Accessories & Parts

USD 13.00

Semi Flexible Solar Panel Encapsulation Material ETFE Film+ EVA Film + Back Sheet Lamination Solar cell Panel Roll Package

Description
Specification

Description

Solar Panel Backsheet Specification

Solar ETFE Film Specification

Model Number: 50μm ETFE film

With (mm): 570 mm

Thickness : 50μm

Layer composition/Color:Single Matter/Transparent

Corona treatment:Both sides of the film are treatable

Application: Semi-Flexible solar panel Encapsulation

Solar EVA Specification

SIZE:540m width

The length 4Meter (If you need more we could be cutted according to customers requirement.)

EVA Adhesive film Feature:

Superior durability - 20 years resistance against weather, high temperature and high humidity
Excellent adhesion - 60 N/cm when applied to glass for TPT film.
>90% light transmission
Excellent encapsulating properties
Film is not adhesive at room temperature to ease manufacturing operations
Cross linking and enhanced bonding are achieved when the film is heated and pressed.

1. EVA film

ITEM		UNIT	FAST CURING
VA content		%	33
Melting point(Before cross-linking)		degree	65
Density		g/cm3	0.96
Transmittance		%	≥91
Refractive index		—	1.48
Tensile strength		Mpa	16
Elongation ratio		%	420
Shrinkage ratio(120degree,3min)		%	3
Completely Gel content(150degree,15min)		%	≥75
Peeling strength	Glass/EVA	N/cm	≥60
	TPT/EVA	N/cm	≥50
UV aging resistance		—	No cracks, no discoloration
Temperature resistance(85degree/-40degree)		—	No thermal expansion and contraction

EVA film lamination and curing

CONDITIONS		FAST CURING
Lamination	Laminating machine heat board(degree)	100-120	135-140	145
	Vacuumzing time(min)	5-8	5	3
	Pressure time(min)	2-3	15-20	12-15
Curing	Curing oven temperaturedegree	135-140	—	—
Curing	Curing time(min)	15-20	—	—
Remark	—	Two steps	One step	One step

Laminating Steps

Laminating: laminate the glass, EVA film, connected silicon cells, EVA film, TPT backsheet foil in sequence.

Vacuum pumping: Place above laminated pieces into the lower room of the double-vacuum press. Then the upper room and the lower room are vacuumed synchronously about 6min.

Heating: the upper room and the lower room are kept vacuum, meanwhile heat the laminated pieces.

Press: Laminated pieces are heated under 135°C-140°C conditions, the upper room cancel vacuum and get back to atmospheric pressure. At that time the lower room is still kept vacuum, that is to say, the upper room press on the laminated pieces of the lower room.

Curing: Isothermal curing under the curing temperature.

Cooling and framing: After isothermal curing, cancel the vacuum of the lower room, open the top of the press, and take out the laminated modules. Then cut off the extra EVA of composite lamination edge. Moreover seal frame and equip the termainal box, assemble PV modules at last.