When added to plastisol inks, UNION INK's PLUS-9020 Build-Up Buster dramatically reduces the amount of ink that adheres to the bottom of the screen. This "build-up" can lead to undesirable smearing among printed colors when printing wet-on-wet and cause significant cleaning interruptions during production. The problem occurs most often when printing very opaque inks and fluorescent "neon" inks but also shows up in standard colors or 4-color process work.
UNION INK's PLUS-9020 Build-Up Buster should be added in a 2-5% ratio by weight. Test in small batches to determine the optimal amount to use with the specific ink and production conditions.
Once the UNION INK PLUS-9020 Build-Up Buster has been added to the plastisol, the mixture will effectively reduce "build-up" throughout the useful life of the ink. However, minor evaporation of the Build-Up Buster is likely to occur over time; keep the container lid closed tightly during storage. Always remix and pretest inks that have been left for extended periods of time.
Add desired amount of Build-Up Buster to the ink before adding any reducer--this may eliminate the need for any further reducing. NOTE: UNION INK's PLUS-9020 Build-Up Buster is not a balanced reducer. If further reducing is necessary, Reducer/Detackifier should be used.
Adding PLUS-9020 Build-Up Buster should have no noticeable effect on curing.
Always pretest mixtures in small batches before production.
While Union Ink Company believes that the data contained herein are factual and the opinions expressed are those of qualified experts regarding the results of the tests conducted, the data are not to be taken as a warranty or representation for which Union Ink Company assumes legal responsibility. They are offered solely for your consideration, investigation, and verification. Pretest inks on surfaces to be printed.