EVA

SUNLINK FC and UFC are PID and Snail trail resistant EVA (ethylene vinyl acetate) photovoltaic encapsulating film.

SUNLINK EVA RECEIPE :

Lamination Process	FC	UFC
Platen Temperature	138°C - 145°C	145°C - 155°C
Vacuum Time	4.30 min - 5 min	4 min - 5 min
Vacuum Pressure	< -97 Kpa	< -98 Kpa
Lamination Pressing Time	7-9 min	6 - 8 min
Target Temperature within the Encapsulant	140°C	150°C

Storage:

Storage into dry shady and cool place, temperature ≤30? humidity ≤70%;
The storage term is nine months. Suggest use up them within six months;
It is not too high for the EVA stack’s height, so that avoid EVA distortion and bend.
Two tiers are best; Because EVA may be adhered to each other when it is subjected load.
EVA shall be stored in the conditions in a place away from direct sunshine.

Parameters	Test Method *	Units	Condition	FC	UFC
Physical Mechanical
Thickness	Micrometer	mm	On Even Surface	0.30-0.80	0.30-0.80
Width	Scale	mm	On Even Surface	300-2100	300-2100
Tensile Strength	D638	MPa	23°C, 250 mm/min elongation rate	≥ 18	≥ 18
Elongation at Break	D638	%	23°C, 250 mm/min elongation rate	500 - 700	500 - 700
Secant Modules at 1% Strain	D638	MPa	23°C, 250 mm/min elongation rate	≤14	≤14
Hardness	D2240	Shore A	23°C	≤ 65	≤ 65
Adhesive Strength to Glass	D903	N/cm	23°C	≥ 70	≥ 70
Adhesive Strength to Backsheet	D903	N/cm	23°C	≥ 70	≥ 70
Gel Content	Soxhlet/Sunlink	% GEL	23°C	≥ 75	≥ 75
Thermal Shrinkage	Sunlink	%	At 160°C for 5min	3.00	3.00
Water Absorption	ISO 62-200805	wt%	23°C	≤0.1	≤0.1
Optical
Optical Transmission	E424	%	23°C, 0.46 mm thickness	≥ 91	≥ 91
Refractive Index	D542		23°C, 0.46 mm thickness	1.42	1.42
UV Cut Off	E424	nm	23°C, 0.46 mm thickness	300	300
Electrical
Volume Resistivity	D257	ohm cm	23°C/50%RH	>1 x 10¹⁵	>1 x 10¹⁵
Dielectric Strength	D149	kV/mm	23°C/50% RH, 500V/sec	>20	>20

Our Client