Improvement in roller-life by minimizing the rubber surface indentation
If a rotogravure impression roller or lamination roller is used for certain period of time, rubber surface indentation caused by the film edges remains.
Such surface indentations causes various problems such as insufficient print, air trap, uneven nipping because sufficient pressure cannot be applied.
Also, when a film of different width is passed through, rubber indentations may be transferred to the film.
Below data shows the strain of the roller surface of a conventional rubber and the PUW.
The data is based on a 200μm film pressed against the rubber surface for a certain period of time.