Contact or non-contact?

摘要

Converters know that a clean web is a productive web. By removing the contamination that is an inevitable byproduct of high-speed webs, web cleaning systems increase productivity, reducing maintenance downtime and minimising the waste caused by sub-quality product. Converting lines process different materials at different speeds and tensions. The types and levels of contamination differ, as do the reasons why web cleaning is necessary. Is it principally a customer requirement? Or a maintenance issue? Given that any web cleaning solution will almost certainly have to fit into an existing production line, how does this influence the choice of system? All these factors, and more besides, will contribute to the final equipment selection. To decide which factors are most important, it is fundamental to understand the basics of web contamination and how to tackle it.