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Trial Number 3

Trial Purpose:

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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