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Method for increasing adhesion between a security element and a fibrous sheet material

A technology of anti-counterfeiting components and fiber materials, applied in the direction of fiber raw material processing, non-fiber pulp addition, chemical instruments and methods, etc., can solve problems such as adverse economic effects, and achieve the effect of increasing design options and firm thickness

Inactive Publication Date: 2011-06-08
CRANE & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But any such additional steps that have to be taken away from the main process will adversely affect the economics of the process

Method used

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  • Method for increasing adhesion between a security element and a fibrous sheet material
  • Method for increasing adhesion between a security element and a fibrous sheet material
  • Method for increasing adhesion between a security element and a fibrous sheet material

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Embodiment Construction

[0026] Activatable adhesive films adhered to security strips or security tapes, once activated, serve to more securely fasten these strips to the sheet-like fibrous material. After activation, the membrane softens and penetrates into the surrounding sheet-like fibrous material, forming a mechanical as well as a chemical bond with the sheet-like material. Documents made from these sheet-like fiber materials exhibit enhanced durability.

[0027] As mentioned above, the method of the present invention to enhance the adhesion between the security element and the sheet-like fibrous material includes:

[0028] adhering one or more activatable adhesive films to at least one surface of the security element to form a laminated structure;

[0029] (i) introducing the laminated structure onto or into the forming fibrous web in the wet end of a fourdrinier or twin wire papermaking machine, or (ii) combining the laminated structure with the fibrous web forming drum in a cylinder Contact,...

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Abstract

A method for increasing adhesion between a security element (e.g., a security strip or band) and a fibrous sheet material such as paper is provided. Also provided by way of this invention is a security element laminated to one or more activatable adhesive films, a fibrous sheet material having such a laminated structure contained on or within a surface thereof, or at least partially embedded therein, and a document (e.g., a security document such as a banknote) made from such a fibrous sheet material.

Description

[0001] This application claims priority to US Provisional Patent Application Serial No. 61 / 060,906, filed June 12, 2008, which is hereby incorporated by reference in its entirety. technical field [0002] The present invention relates generally to a method of enhancing the adhesion between a security element and a sheet-like fibrous material, in particular to a security element laminated to one or more activatable adhesive films; a sheet-like fibrous material, the material having a laminated structure contained on or in its surface or at least partially embedded therein; and a document made of the sheet-form fibrous material. Background technique [0003] Security elements are widely used in banknotes and other high-value documents in the form of lines, strips or ribbons, providing visual and / or mechanical means to verify the authenticity of these documents. These security elements can be fully or partially embedded in banknotes or other high-value documents, or placed on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/40D21H21/42A63F3/06B42D15/00G09F3/10
CPCB42D25/47B42D25/355B42D15/0026B42D2031/28D21H21/42G09F3/0292D21H21/40Y10T428/283Y10T428/264Y10T428/2848Y10T428/24777Y10T428/28Y10T428/2817D21F9/00B32B37/12D21H21/38
Inventor D·A·克瑞尼G·D·普雷特
Owner CRANE & CO