Headbox with flexible support plates

US6261418A · kind A · utility

Assignee

• Voith Sulzer Papiertechnik Patent GmbH · DE

Inventors

• Wolf-Gunter Stotz · Ravensburg, DE
• Thomas Merath · Weingarten, DE
• Klaus Lehleiter · Steinheim, DE
• Christoph Link · Weingarten, DE
• Josef Frey · Ravensburg, DE
• Eckart Krageloch · Heidenheim, DE
• Thomas Dietz · Richmond, US
• Simon Juhas · Nattheim, DE
• Jurgen Banning · Düren, DE

Key dates

• Filing date: Oct 4, 1999
• Grant date: Jul 17, 2001
• Expiry date: Oct 4, 2019

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21F1/028
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Headbox for a paper-making machine including a nozzle extending transversely to the machine running direction across the machine width. The nozzle has a lower and an upper continuous wall each extending across the machine width. The lower nozzle wall is supported by several separate supporting elements distributed across the machine width on a foundation. The supporting elements are non-rigid or flexible plates to permit bending in a direction transversely to the machine running direction. Alternatively or additionally, a swivelable or pivotable upper nozzle wall is connected by several separate supporting members distributed across the machine width to a transverse bar attached above a swivel axis. The supporting members are non-rigid or flexible plates to permit bending transversely to the machine running direction. Alternatively or additionally, an upper arm and a central part of a central component of the headbox are each segmented transversely to the machine running direction, while an inlet-side central part of the central component and the lower nozzle wall are each designed to be continuous transverse to the machine running direction.