Study of friction between the web and the air turning bar

Abstract

In this paper, we will discuss a method used to reduce friction and ink set-off in web-fed machines through implementing an air cushion between the web and the air bar used to influence the web trajectory. In the available academic literature, there is no study of the friction force between said two surfaces. Our goal is to establish a correlation between air tension, tensile and the web’s width. A specially designed experimental air bar was created; in a series of experiments, air was fed into the gap between the bar and the wrapping web. The results (friction force’s dependence on air tension, tensile and web’s width) are to be taken into account while designing web conductors for web-fed printing machines.

Analysis of modern measuring instruments for research diagnostic systems of print media equipment

“…Therefore, in the process of scientific research work on the study of the states of mechanisms of printing machines, measurements of parameters are carried out both on the installed technological equipment [2] in educational institutions, and on specially made layouts of nodes and stands [3][4][5][6][7][8][9], software packages are also widely used [10][11][12]. The purpose of this work is the selection of components for external diagnostics of the parameters of printing machines and the presentation of an example of their use in research work.…”