Patent · US Expired

Suction box

US5972170A · kind A · utility

2Cited by

8References

30Claims

0Family size

Assignee

Voith Sulzer Papiermaschinen GmbH · DE

Inventors

Erwin Hund · Schlier, DE
Peter Kahl · Gerstetten, DE
Andreas Meschenmoser · Ravensburg, DE

Key dates

Filing date	Oct 31, 1997
Grant date	Oct 26, 1999
Priority date	—
Expiry date	Oct 31, 2017

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21F3/02
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A suction box for use in a press arrangement in a machine for producing a paper or cardboard web. The suction box includes at least one suction side suctioning the fibrous pulp sheet onto a transport side of at least one felt belt. The suction box further includes at least one non-suction side and at least one slit. A vacuum is created by having air blown out of at least one slit. The vacuum occurs along the felt belt in a run direction of the felt belt. The slit is positioned at an edge of at least one non-suction side of the suction box. The suction box may be disposed on an exit side of a press slit of the press arrangement. The press slit is adapted to treat the fibrous pulp sheet. At least one felt belt is guided, simultaneously with the fibrous pulp sheet, through the press slit. Upon exiting the press slit, the fibrous pulp sheet is suctioned onto at least one felt belt by the suction box.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.