To evaluate ink and paint removal for supplied products as compared to traditional solvent
Date Run:
06/25/2010
Experiment Procedure:
One set of preweighed stainless steel and wood coupons were coated with Dayetek Daye Black quick dry lithographic ink using a handheld swab. A second set of preweighed stainless steel and wood coupons were coated with Barnes Group Bowman Distribution Industrial Finish Gloss Black spray paint No 24700. Coated coupons were allowed to sit for several hours for drying of applied ink/paint. Once dry, coupons were weighed to determine the amount of contamination that was applied.
Three coupons were placed into a Gardner Straight Line Washability unit. A Kimberly-Clark Wypal reinforced paper towel was attached to the cleaning sled and soaked with 5-7 sprays of cleaning solutions. Each coupon was sprayed 7-10 times with the same cleaning solution. The cleaning unit was run for 20 cycles (~33 seconds). At the end of cleaning, final weights were recorded, and efficiencies were calculated.
Trial Results:
The SG22002D was the more effective solvent on the paint from stainless steel and the 50/50 mix with SG21000D and SG22002D was almost as effective as the DBE on the ink from stainless steel.
Gravimetric analysis was inconclusive for both soils from the wood coupons due to weight gain in the final "clean" weights. The previous trial showed that SG21000D was the more effective cleaner on the ink and the SG22002D for the paint. The table lists the amount of soil added, the amount remaining and the efficiency for each coupon.
Cleaner
Initial wt
Final wt
% Removed
SG21000D- Stainless Steel-Ink
0.1885
0.1074
43.02
0.1692
0.0965
42.97
0.1178
0.0661
43.89
SG22002D- Stainless Steel-Ink
0.1089
0.0076
93.02
0.1502
0.0318
78.83
0.2402
0.1446
39.80
50/50- Stainless Steel-Ink
0.1770
0.0207
88.31
0.2322
0.0256
88.98
0.1662
0.0267
83.94
DBE- Stainless Steel-Ink
0.1984
0.0145
92.69
0.1090
0.0129
88.17
0.1413
0.0095
93.28
SG21000D- Wood-Ink
0.6274
0.4925
21.50
0.5305
0.5018
5.41
0.6458
0.4834
25.15
SG22002D- Wood-Ink
0.6170
0.4496
27.13
0.4505
0.3769
16.34
0.5546
0.4101
26.05
50/50- Wood-Ink
0.6075
0.5539
8.82
0.4839
0.5435
-12.32
0.5774
0.7550
-30.76
DBE- Wood-Ink
0.5349
0.6163
-15.22
0.6076
0.7552
-24.29
0.4241
0.6350
-49.73
SG21000D- Stainless Steel-Spray Paint
0.0746
0.0546
26.81
0.0384
0.0247
35.68
0.0569
0.0482
15.29
SG22002D- Stainless Steel-Spray Paint
0.0590
0.0087
85.25
0.0636
0.0048
92.45
0.0719
0.0040
94.44
50/50- Stainless Steel-Spray Paint
0.0656
0.0326
50.30
0.0547
0.0353
35.47
0.0680
0.0242
64.41
DBE- Stainless Steel-Spray Paint
0.0634
0.0067
89.43
0.0478
0.0030
93.72
0.0639
0.0169
73.55
SG21000D- Wood-Spray Paint
0.1613
0.4811
-198.26
0.1332
0.4649
-249.02
0.1629
-0.8476
620.32
SG22002D- Wood-Spray Paint
0.1485
0.3612
-143.23
0.1765
0.4455
-152.41
0.1839
0.4094
-122.62
50/50- Wood-Spray Paint
0.2273
0.5666
-149.27
0.1825
0.7567
-314.63
0.1862
0.8809
-373.09
DBE- Wood-Spray Paint
0.1856
0.3161
-70.31
0.1958
0.3294
-68.23
0.2093
0.3592
-71.62
Summary
Stainless Steel
Wood
Product
Paint
Ink
Paint
Ink
SG21000D
25.93
43.29
17.35
57.68
SG22002D
90.71
70.55
23.17
-139.42
50/50
50.06
87.07
-11.42
-279
DBE
85.57
91.38
-29.75
-70.06
Success Rating:
A follow up test, usually based on company input.
Conclusion:
The supplied solvents were again shown to have success at removing ink and paint using a short dwell time through manual cleaning.
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