WHC Technical Topic: Dave's Favorite Defects - Slip Dimple / Pimple

By Dr. David R. Roisum

In this video clip, we outline the causes and cures for the rare film-winding defect called slip dimples or slip pimples. We will see parallels with the rare paper=winding defect from last week, the crepe wrinkle. The parallels, besides being rare, include that both are accumulating or worse, that both are very chemistry-dependent, and both are very sensitive to nip loads.

Web201.68zd - https://www.youtube.com/watch?v=fbCUNnRX-xY