Trial Purpose:
Evaluation of cleaning for additional inks
Date Run:
06/22/1998Experiment Procedure:
Three chemistries from the previous experiment were used in addition to three other chemistries.
One preweighed aluminum coupon for each cleaner was coated with ink using a swab. The coupons sat for three hours and weighed again. A plastic eye dropper was used to transfer the full-strength cleaner onto the coupon. After five minutes the coupon was wiped with a paper towel to determine if any cleaning had occurred. Observations were recorded. More cleaner was added to the coupon. At the end of the second five-minute interval, coupons were wiped again, and observations made. The coupons were wiped dry and final weights taken.
SUBSTRATE MATERIAL: Aluminum 6061 T-4
CONTAMINANTS: Ink-Duracell Copper & P200-200 Black Base
Trial Results:
Table 1 lists the observations made at both five minute intervals. Table 2 list the cleaning efficiencies of the cleaners at full strength for each ink.
Table 1. Observations Made
| CLEANER | 1st OBSERVATION (5 min) | 2nd OBSERVATION (10 min) |
| Soy Gold 1000 | Some black removed | Removed black but not copper |
| Shopmaster | Some copper-little black | Some of both |
| InproClean 4000T | Some copper | Some black |
| Greenstuff Neutral | No effect | No effect |
| Safety Wash | No effect | No effect |
| HTF 50 | Removed most of both | Effective removal |
Table 2. Cleaning Efficiencies
| 5 Minutes | 4000 T | Shopmaster | Greenstuff | Soy Gold | HTF 50 | Safe Wash |
| Copper | No value | 7.58 | 1.23 | -1.47 | 95.4 | 1.14 |
| Black | 53.4 | 1.67 | -2.5 | -1.65 | 87.1 | -1.18 |
| 10 Minutes | 4000 T | Shopmaster | Greenstuff | Soy Gold | HTF 50 | Safe Wash |
| Copper | 25.6 | 43.4 | -1.8 | -3.9 | 95.6 | 1.92 |
| Black | 85.5 | 58.2 | -6.91 | 3.47 | 91.8 | -3.29 |
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.Conclusion:
Only one chemistry was effective in removing the two inks, T-Square HTF 50. This product was then used to clean the red ink from the aluminum coupons. Upon application, the ink was immediately dissolved by the cleaning chemistry (99.4% removal). An MSDS and technical data sheet have been included for the product.
