Nip Impressions

Presented by David R. Roisum, Finishing Technologies, Inc.

A nonuniform nip is nearly synonymous with a nonuniform product. Uneven nips are also a common cause of web handling waste such as wrinkles, web breaks and other troubles. There are many causes for nonuniform nips. However, all are readily detectable by using nip impression paper. Nip impression paper is an indispensable tool for process and product troubleshooting as well as for nip roller system maintenance. This technique is good, fast and cheap. There are few good alternatives.