Patent · US Expired

Slit nozzle for coating trips of material, especially paper or board strips, with a pigment coating

US6471775B1 · kind B1 · utility

4Cited by

6References

14Claims

0Family size

Assignee

Jagenberg Papiertechnik GmbH · DE

Inventors

Ingo Becker · Linnich, DE
Reinhard Knop · Essen, DE
Bernd Bohnenkamp · Düsseldorf, DE

Key dates

Filing date	Jul 17, 2000
Grant date	Oct 29, 2002
Priority date	—
Expiry date	Jul 17, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S118/04
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A slot nozzle for coating webs of material, for example, paper, paperboard, cardboard, with a flowable coating substance, for example, a pigment coating, has a slot shaped outlet channel to which a distribution chamber extending over the width of the web is connected. A plurality of supply conduits are connected to the distribution chamber in spaced relationship across the width of the web and the length of the outlet channel and each supply conduit has a valve for adjusting the volume flow of the coating liquid. A respective diffuser is provided between each supply conduit and the distribution chamber and widens in the direction of the latter.

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