This document reports on the results of accelerated weathering tests on different solar control window films. The films were tested over 1000 hours and measurements were taken of optical and color properties at 0 hours and 1000 hours. Changes from 0 to 1000 hours (denoted by Δ) included reductions in visible light transmission and increases in infrared transmission and darkness of color. The total color difference (ΔE) ranged from 1.8 to 5.6 depending on the level of solar control for the film.

1. 0hr 1000hr
UV 100.0 99.9
VLT 10.2 11.8
IR 63.7 62.5
1000hr Final
ΔUV 0.0 0.0
ΔVLT -1.6 -1.6
ΔIR 1.1 1.1
0hr 1000hr
L* 30.47 33.43
a* -4.36 -3
b* -5.28 -9.88
1000hr Final
ΔL -3.0 -3.0
Δa -1.4 -1.4
Δb 4.6 4.6
ΔE 0 0 0 5.6 5.6
1500hr
0hr 125hr 250hr
500hr 750hr 1000hr
Optical propeerty Color Propeerty Outlook/ Color
-1.6
ΔIR 1.1
ΔE 5.6
SNT05(SENTRY 5%)
Weatherable Test
Optical property 0hr Final [1000hr]
1. TEST Purpose : 1000hr
ΔUV 0.0
ΔVLT
SOLARFREE WINDOW FILM Page 1 QUV Sunblade & Artisan

2. 2 ply 1.5 mil S
3 μm
23 μm
7 μm
12 μm
9 μm
23 μm
μm
REF
SR H/C
CLEAR PET
CARBON PSA
CLEAR PET
CLEAR PSA
LINER FILM
Structure UV-Vis-Spectrophotometer Graph
SPL Name : SNT05
SOLARFREE WINDOW FILM Page 2 QUV Sunblade & Artisan

3. 0hr 1000hr
UV 99.8 99.7
VLT 12.2 14.2
IR 87.2 84.1
1000hr Final
ΔUV 0.1 0.1
ΔVLT -2.0 -2.0
ΔIR 3.0 3.0
0hr 1000hr
L* 49.24 50.02
a* -3.36 -2.78
b* -4.15 -6.03
1000hr Final
ΔL -0.8 -0.8
Δa -0.6 -0.6
Δb 1.9 1.9
ΔE 0 0 0 2.1 2.1
1500hr
0hr 125hr 250hr
500hr 750hr 1000hr
Optical propeerty Color Propeerty Outlook/ Color
-2.0
ΔIR 3.0
ΔE 2.1
SNT20(SENTRY 20%)
Weatherable Test
Optical property 0hr Final [1000hr]
1. TEST Purpose : 1000hr
ΔUV 0.1
ΔVLT
SOLARFREE WINDOW FILM Page 1 QUV Sunblade & Artisan

4. 2 ply 1.5 mil S
3 μm
23 μm
7 μm
12 μm
9 μm
23 μm
μm
REF
SR H/C
CLEAR PET
CARBON PSA
CLEAR PET
CLEAR PSA
LINER FILM
Structure UV-Vis-Spectrophotometer Graph
SPL Name : SNT20
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
2,5002,4002,3002,2002,1002,0001,9001,8001,7001,6001,5001,4001,3001,2001,1001,000900800700600500400300200
1000hr 0hr
SOLARFREE WINDOW FILM Page 2 QUV Sunblade & Artisan

5. 0hr 1000hr
UV 99.584 99.353
VLT 45.266 47.068
IR 37.333 36.412
1000hr Final
ΔUV 0.2 0.2
ΔVLT -1.8 -1.8
ΔIR 0.9 0.9
0hr 1000hr
L* 70.84 72.02
a* -2.36 -1.69
b* -2.03 -4.41
1000hr Final
ΔL -1.2 -1.2
Δa -0.7 -0.7
Δb 2.4 2.4
ΔE 0 0 0 2.7 2.7
1500hr
0hr 125hr 250hr
500hr 750hr 1000hr
Optical propeerty Color Propeerty Outlook/ Color
-1.8
ΔIR 0.9
ΔE 2.7
SNT35(SENTRY 35%)
Weatherable Test
Optical property 0hr Final [1000hr]
1. TEST Purpose : 1000hr
ΔUV 0.2
ΔVLT
SOLARFREE WINDOW FILM Page 1 QUV Sunblade & Artisan

6. 2 ply 1.5 mil S
3 μm
23 μm
7 μm
12 μm
9 μm
23 μm
μm
REF
SR H/C
CLEAR PET
CARBON PSA
CLEAR PET
CLEAR PSA
LINER FILM
Structure UV-Vis-Spectrophotometer Graph
SPL Name : SNT35
SOLARFREE WINDOW FILM Page 2 QUV Sunblade & Artisan

7. 0hr 1000hr
UV 99.478 99.18
VLT 57.9 59.335
IR 31.466 30.229
1000hr Final
ΔUV 0.3 0.3
ΔVLT -1.4 -1.4
ΔIR 1.2 1.2
0hr 1000hr
L* 79.52 80.43
a* -1.9 -1.37
b* -1.86 -3.36
1000hr Final
ΔL -0.9 -0.9
Δa -0.5 -0.5
Δb 1.5 1.5
ΔE 0 0 0 1.8 1.8
1500hr
0hr 125hr 250hr
500hr 750hr 1000hr
Optical propeerty Color Propeerty Outlook/ Color
-1.4
ΔIR 1.2
ΔE 1.8
SNT50(SENTRY 50%)
Weatherable Test
Optical property 0hr Final [1000hr]
1. TEST Purpose : 1000hr
ΔUV 0.3
ΔVLT
SOLARFREE WINDOW FILM Page 1 QUV Sunblade & Artisan

8. 2 ply 1.5 mil S 구조
3 μm
23 μm
7 μm
12 μm
9 μm
23 μm
μm
REF
SR H/C
CLEAR PET
CARBON PSA
CLEAR PET
CLEAR PSA
LINER FILM
Structure UV-Vis-Spectrophotometer Graph
SPL Name : SNT50
SOLARFREE WINDOW FILM Page 2 QUV Sunblade & Artisan