Installation for processing a paper web, in particular a cigarette paper web

A method for processing a cigarette paper web with a basis weight not exceeding 70 g/m2, the method comprising:

• applying a liquid print medium to the paper web at a printing unit to provide a printed side of the paper web;
• drying the liquid print medium at a first drying station;
• humidifying the paper web with a liquid impregnation medium;
• and
• drying the humidified paper web at a second drying station using contact drying, the second drying station with an entrance, wherein the humidified paper web is brought into direct contact with at least one heated drying roller including a first heated drying roller being the first drying roller in the conveying direction, and wherein the first heated drying roller is not brought into contact with the printed side of the paper web,
• wherein a drying roller directly following the entrance of the second drying station is the only drying roller provided with a hood, wherein that drying roller is at least partially radially surrounded by the hood which directs a stream of hot air at least partially around that drying roller such that the paper web is exposed to the drying stream of hot air.

An installation for processing a cigarette paper web with a basis weight not exceeding 70 g/m2, the installation comprising:

• an input side, via which the paper web is fed to the installation;
• an output side via which the paper web leaves the installation, wherein the paper web runs through the installation from the input side to the output side in a conveying direction;
• a device downstream of the input side for applying a liquid print medium onto the paper web, a first drying station following the applying device in conveying direction for drying the print medium applied to the paper web;
• and
• a device for moisturizing the paper web following the first drying station in conveying direction, and a second drying station following the moisturizing device in conveying direction, by means of which the moisturized paper web is dried;
• wherein the second drying station is realized by contact drying, in which the humidified paper web is in direct contact with three or four drying rollers,
• wherein roller temperatures in the conveying direction are such that the temperature decreases from the first drying roller at the input side to the second drying roller, and
• wherein the temperature of the third drying roller is higher than the temperature of the second drying roller.