breitnipvorrichtung and procedures to satinieren a materialbahn

摘要

A paper-making assembly has an extended-nip (5) glazing drum (4) with a concave curved pressing zone (10) between an continuous moving mantle (2). The belt (2) enters the concave zone (10) esp. via a first convex zone (R1) and leaves via a second convex zone (R2), both outside the extended nip (5) sector. Following the mantle convex sector, the mantle enters a straight sector (L1) before following the concave profile. Immediately following the concave zone, the mantle enters a straight sector (L2) before entering the second convex zone (R2). Also claimed is a process to apply a glazed or satin finish to a paper or carton web (5) within the extended nip. The length of the straight sector (L1, L2) is at least twice the mantle thickness (S).