This paper describes a new mass production system of high functional plastic films, and an application to guide new technology named "Roll-to-Roll Printed Electronics". The primary advantages of this approach are that (1) the use of a web means that the material is extremely thin and large area, (2) formation of three-dimensional wiring with high precision is possible, (3) ultra-high speed mass production is possible, (4) the liquid process eliminates the need for vacuum processing and allows for production at low-temperatures, (5) the freedom to select the web materials is high, and (6) scaling from the nano to the meter size is possible. Although there are many such advantages to this type of roll-to-roll printed electronics, there are still problems that need to be overcome before this technology can be generally applied. In particular, the materials are becoming ever thinner, and the processing precision is higher than in the past, so it is necessary to completely prevent defects such as slip and wrinkles. In addition, it is necessary to reduce stretching as much as possible, making low tension transport essential. As such, significantly progressing the web handling technology accumulated thus far has become an issue for the future.
