APPARATUS FOR DRYING A WEB

摘要

A papermachine drying apparatus is disclosed for drying a first and a second side of the web. The apparatus includes a first single tier drying section for drying only the first side of the web. The first drying section includes a first plurality of dryer cylinders for drying the first side of the web, and a first plurality of vacuum rolls disposed in close proximity between adjacent dryer cylinders of the first plurality of dryer cylinders. A second single tier drying section for drying only the second side of the web in which the drying section includes a second plurality of dryer cylinders for drying the second side of the web, such cylinders being disposed immediately downstream relative to the first drying section. A second plurality of vacuum rolls are arranged such that each vacuum roll is disposed in close proximity between adjacent dryer cylinders of the second plurality of dryer cylinders. At least one of the vacuum rolls of the first and the second drying sections have a smaller diameter than the diameter of any of the dryer cylinders of the first and second drying sections, and the second drying section is a displaced downstream mirror image of the first drying section.