Research on Computing Model of the Cell Volume for Electronic Engraved Gravure

Abstract

Gravure printing has been applied widely in flexible packaging, building materials and other fields, and amount of ink transfer is an important factor to affect the printing quality and depends largely on the volume of the gravure cell. The volume of cell is affected by gravure process parameters such as screen lines, cell angle and engraving needle angle, so the volume of cell is calculated difficulty, and it is difficulty for the optimization of the gravure plate-making process. This paper presents a computing model calculating the volume of gravure cell. The cells for three kind of dot coverage rate are carved with 70LPC screening lines and 120°needle angle, their opening length, width and depth are measured by cell measuring instrument, their relation is been found by MATLAB and the computing model is built to calculate the cell volume model .The results show that the computing model is suitable for different cell angle, and the cell volume depends the screening rules, cell angle, needle angle and the cell depth. If the depth for different dot coverage rate is measured the cell volume will be calculated.

Sustainable and green manufacturing of gravure printing cylinder for flexible packaging printing application

“…EME was the process, where a cell was engraved on the hard copper plated cylinder by a fully automatic process 8 . The cylinder cell depth was around 20–50 µm and had highly précised and consistent engraved cells 9 . Electromechanical engraving has worked successfully for decades with organic solvent-based inks.…”

“…The laser-induced engraving was the latest cutting-edge technological development in engraving techniques. In which the depth of the cell was drastically reduced for achieving the same printing characteristics compared to electronic engraving 9 . Depth of the cell reduces in LE due to non-contact digging of engraving cells by laser.…”