Patent · US Active

Dewatering screen and method for the production thereof

US8349132B2 · kind B2 · utility

1Cited by

5References

24Claims

0Family size

Assignee

GIESECKE & DEVRIENT GMBH · DE

Inventors

André Gregarek · Munich, DE
Andreas Hanelt · Fischbachau, DE
Bernhard Wiedner · Miesbach, DE
Theodor Burchard · Tegernsee, DE
Andreas Aigner · Valley, DE
Gunther Wild · Hausham, DE

Key dates

Filing date	Dec 5, 2007
Grant date	Jan 8, 2013
Priority date	—
Expiry date	Jan 11, 2029

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21F11/006
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a dewatering screen for manufacturing paper having multi-level watermarks, having a carrier mold (54) that exhibits, in a fractional region, a multi-level relief (30) in the form of the watermark to be produced. According to the present invention, it is provided that the multi-level relief is formed by an injection-molded, perforated (40) watermark insert (30).

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