Andritz Ag

Andritz-patentwaltungs-gesellschaft M.b.h.

Jörg Bauböck

Wolfgang Promitzer

Paul Arnold

Gernot Tropper

Robert Winkelbauer

The invention relates to a Yankee dryer () made of steel with a cylindrical steel shell () that is closed off at each end by a cylinder end cover (). According to the invention the Yankee dryer () has a one-piece central shaft () with a first and a second connecting flange () to join the central shaft () to the end covers (), where the diameter of the first connecting flange () is smaller than the diameter of the opening () in the second end cover () so that the central shaft () can be pushed through this opening () into the Yankee cylinder (). The invention also refers to a manufacturing process for a Yankee dryer ().

Yankee dryer for drying a pulp web

A process and a device for dewatering a fiber web, especially a paper web, using vacuum. The vacuum seen by a given unit are of the web is pulsed between a maximum value V and a minimum value. At least one suction boxis provided with perforations beneath the running web where the vacuum is applied with a pulsating effect on the web.

Process and device for dewatering a fiber web

The invention relates to a process for reducing dust deposits on the drying hood of a paper machine. It is primarily characterized by additional fresh air being blown over the upper side of the paper machine drying hood. The invention also relates to a device for reducing dust deposits on the drying hood of a paper machines, characterized by at least one slit for blowing our air being provided on the top side of the paper machine drying hood.

Growing community of inventors

Graz, Austria

Jörg Bauböck