This TAPPI technical addendum expands the Corrugating Defect Terminology Manual with defect analysis specific to fingerless singlefacers, including vacuum and pressure-type machines. It provides practical cause-and-remedy guidance for slot lines, high-low corrugations, intermittent pressure-roll cutting, loose liner conditions, liner separation, running blisters, startup blisters, and glue-related defects.
The document is intended for corrugating machine operators, process engineers, maintenance personnel, quality teams, and technical managers who troubleshoot singlefacer performance. Recommendations address machine settings, roll condition, web tension, adhesive application, moisture and heat control, vacuum and pressure systems, bearings, alignment, and related operating conditions.
Application Scope: Corrugating plants and technical teams responsible for operating, maintaining, troubleshooting, and improving fingerless singlefacer equipment and singleface web quality.
