WHC Technical Topic: Dave's Favorite Defects - Ballooning

By Dr. David R. Roisum

In this video clip, we will review three possible causes for a bubble behind a winding nip -- including baggy webs, an uneven nip, and air. The focus will be on the specific type that is CAUSED by air and how to mitigate it with a very special type of nip-roller grooving.

Web201.68za –  https://www.youtube.com/watch?v=abTd1mwMCk4