Patent · US Expired

Apparatus and method for application of a liquid or pasty medium onto a passing substrate

US6468588B1 · kind B1 · utility

4Cited by

18References

35Claims

0Family size

Assignee

Voith Sulzer Papiermaschinen GmbH · DE

Inventors

Richard Bernert · Giengen an der Brenz, DE
Michael Trefz · Aub, DE
Harald F. Hess · Ravensburg, DE

Key dates

Filing date	May 12, 1998
Grant date	Oct 22, 2002
Priority date	—
Expiry date	May 12, 2018

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H25/08
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An apparatus for application of a liquid or pasty coating medium onto a substrate moving past it, for instance a material web of paper, cardboard or boxboard or an applicator roll, includes a back-up chamber which is bounded on its substrate entrance end by a back-up chamber entrance bounding element and on its substrate exit end by a back-up chamber exit bounding element. The apparatus also includes a feed device for feeding the coating medium. In the applicator according to the invention for achieving a uniform coating application, the feed device, viewed in the direction of travel of the substrate, is arranged before the back-up chamber entrance bounding element.

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