The Influence of Self-Adhesive Sleeves Used for Flexographic Plate Mounting on Print Quality

This study explores the influence of self adhesive printing sleeve hardness on the quality and stability of the flexographic printing process. The primary objective is to improve process predictability and print consistency by examining how different sleeve configurations affect key print parameters. Specifically, the research compares self­adhesive sleeves of varying hardness levels with a standard sleeve setup using conventional mounting tape.
Print tests were conducted under controlled conditions using modern flexographic equipment and industry­standard materials. The evaluation focused on the reproduction of halftone dots, optical density, dot gain, and color stability. Spectrodensitometric analysis was used to assess the print results across the different sleeve types. Testing was performed on a Soma Optima 2 flexo press using Sun Chemical inks. All configurations operate under the same parameters — ink, speed, anilox, material. Measurements were performed using an X­Rite eXact spectrophotometer, and surface quality was analyzed using an Anicam Trojka 3D microscope.
The findings suggest that the mechanical properties of the sleeves, particularly their hardness, play a significant role in print performance. The results offer valuable insights for flexographic printers seeking to optimize their process by selecting sleeve systems that ensure both high­quality output and production efficiency.