2018 年 55 巻 3 号 p. 190-195
This paper focuses on three separate processes of flexographic form development using DuPont FAST technology. These processes differ in terms of the volume, driving force, and absorption mechanism for low viscosity photopolymer into nonwoven materials. Research was conducted on the absorption capacity of nonwoven materials of different synthetic fibers. In addition, the possibility of using needle-punched nonwoven canvases, made from a mixture of synthetic and bicomponent fibers, to function as an absorbent of melted thermoplastic polymers in the production of print forms was also investigated. Geometric modeling shows that the amount of photopolymer extracted from the forming plates depends on the deformation experienced during compression, the plate dimensions, and the distance between the raster form printing elements. The optimal compression range of the forming plate and the thermal processing range of needle-punched nonwoven canvases for full extraction of photopolymer melt from the gaps in the printing forms were determined.
