Roll Up Your Sleeves

In ultrasonic cleaning, transducer-generated sound waves create bubbles that use a vacuum effect to remove material from a roll's cells. Marro says ultrasonics' submicron-size bubbles are the key to its effectiveness for higher line screens. He recommends adding a chemical such as CR Products' CR 1 to the cleaning solution to aid the breakdown of polymer (a scuff-resistant ink additive) build-up on rolls. Otherwise, ultrasonic cleaning may take several hours, causing damage. Normally, ultrasonics cleans a roll in two to seven minutes.