METHOD AND DEVICE FOR PRODUCING FRAUD-PROOF PAPER AND FRAUD-PROOF PAPER

Title:

METHOD AND DEVICE FOR PRODUCING FRAUD-PROOF PAPER AND FRAUD-PROOF PAPER

Document Type and Number:

WIPO Patent Application WO/2004/016851

Kind Code:

A1

Abstract:

The invention relates to fraud-proof paper and to a method and device for the production thereof. The inventive method consists in forming a first paper web provided with a protective band whose width is equal to or less than 2 mm and which is incorporated into the web during the formation thereof with the aid of a cylinder mould machine in such a way that free-access areas (windows) are formed on protruded elements of the face side of the web. Said protective band is incorporated into the first paper web during the formation thereof and after formation of the free access areas which is associated with the formation of a fibre layer representing 35-50 % of the mass of the first paper web. A second paper web devoid of the protective band is produced simultaneously with the first web and afterwards is applied to the back side thereof in such a way that when they are connected to each other the defects of the said back side are hidden. Afterwards, the thus obtained two- layer material is pressed and dried. The protruded elements are embodied in the form of waterproof elements. An additional protective element is incorporated into the first and/or the second paper web during the production thereof. For the purpose of said invention, a protective band having a width ranging from 2 to 20 mm and comprising additional protective elements is used

Inventors:

VYAZALOV SERGEI YURIEVICH (RU)
AGAFONOV ALEXANDR NIKOLAEVICH (RU)
CHERNYSHEV SERGEI IVANOVICH (RU)
KURYATNIKOV ANDREI BORISOVICH (RU)
OSTREROV MIKHAIL ANATOLIEVICH (RU)
PISAREV ALEXANDR GEORGIEVICH (RU)

Application Number:

PCT/RU2003/000367

Publication Date:

February 26, 2004

Filing Date:

August 14, 2003

Export Citation:

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Assignee:

OB G PREDPR I ORGANIZATSII PRO (RU)
VYAZALOV SERGEI YURIEVICH (RU)
AGAFONOV ALEXANDR NIKOLAEVICH (RU)
CHERNYSHEV SERGEI IVANOVICH (RU)
KURYATNIKOV ANDREI BORISOVICH (RU)
OSTREROV MIKHAIL ANATOLIEVICH (RU)
PISAREV ALEXANDR GEORGIEVICH (RU)

International Classes:

B42D15/00; B42D15/10; D21F1/44; D21F9/04; D21F11/00; D21H21/40; D21H21/42; D21H27/30; (IPC1-7): D21F11/00; B42D15/10; D21H21/40; D21H21/42

Foreign References:

RU2125938C1	1999-02-10
RU2135667C1	1999-08-27
EP0059056A1	1982-09-01
RU2170788C1	2001-07-20

Other References: