Security sheet

Patent metadata

Field	Value
Publication number	US-11084312-B2
Application number	US-201916977259-A
Country	US
Kind code	B2
Filing date	Mar 1, 2019
Priority date	Mar 2, 2018
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

The present disclosure is directed towards a security sheet (11) for displaying data (16). The security sheet (11) comprises a data sheet (15) for displaying data (16) and an attachment layer (17). The attachment layer (17) comprises a plurality of tabs (25) extending from an attachment portion (26) for attaching the data sheet (15) into a security document (10). The plurality of tabs (25) are attached to the data sheet (15) such that the attachment layer (17) is attached to and extends from the data sheet (15). The attachment layer (17) can comprise a textile.

First claim

The invention claimed is:

1. A security sheet comprising:
a data sheet for displaying data; and
an attachment layer comprising a plurality of tabs and an attachment portion, wherein the plurality of tabs extend from the attachment portion for attaching the data sheet into a security document, wherein:
the plurality of tabs are attached to the data sheet such that the attachment layer is attached to and extends from the data sheet,
the plurality of tabs are attached to the data sheet by being at least partially embedded in the data sheet, and
at least one spacing separates at least two adjacent tabs of the plurality of tabs and the plurality of tabs are at least partially embedded in the data sheet by material of the data sheet at least partially filling the at least one spacing.

2. The security sheet of claim 1 , wherein the security sheet comprises data elements in or on the data sheet and the plurality of tabs at least partially overlap the data elements.

3. The security sheet of claim 1 , wherein the data sheet is formed from at least a plurality of body layers and at least one tab of the plurality of tabs is attached between two adjacent body layers attached to one another.

4. The security sheet of claim 1 , wherein the data sheet is formed from at least one body layer and at least one tab of the plurality of tabs is attached at or adjacent to and at least partially overlies an outer surface of at least one body layer and the data sheet.

5. The security sheet of claim 4 further comprising at least one patch located over at least a portion of the plurality of tabs and attached to the data sheet.

6. The security sheet of claim 1 , wherein the attachment layer comprises a textile and/or at least one film layer.

7. The security sheet of claim 6 , wherein the attachment layer comprises a textile and the attachment portion comprises a plurality of warps intersecting a plurality of wefts and the plurality of tabs comprises portions of the plurality of wefts extending from the plurality of warps.

8. The security sheet of claim 6 , wherein the attachment layer comprises a textile comprising warps and wefts and the attachment portion comprises at least two of the warps of the textile interlacing and/or overlapping at least portions of at least two of the wefts of the textile.

9. The security sheet of claim 8 , wherein the wefts comprise tab wefts and the plurality of tabs comprise at least portions of the tab wefts.

10. The security sheet of claim 9 , wherein the plurality of tabs comprise fewer tab wefts than the wefts of the attachment portion.

11. The security sheet of claim 9 , wherein at least one tab weft extends at least partially across the attachment portion.

12. The security sheet of claim 11 , wherein the wefts of the textile further comprise at least one infill weft, wherein the attachment portion comprises the at least one infill weft between at least two tab wefts and at least two adjacent tabs comprise the at least two tab wefts.

13. The security sheet of claim 12 , wherein the tab wefts have a smaller diameter than at least one infill weft and/or warps of the attachment portion.

14. The security sheet of claim 8 , wherein the attachment portion comprises the warps intersecting the wefts and the plurality of tabs comprise portions of the wefts extending from the warps.

15. The security sheet of claim 8 , wherein a continuous yarn forms a plurality of the wefts.

16. The security sheet of claim 8 , wherein at least one warp of the attachment portion is interlaced with at least one weft of the attachment portion by at least one interlocking loop of the at least one warp and/or the at least one weft.

17. The security sheet of claim 1 , wherein at least two adjacent tabs of the plurality of tabs are separated by at least one spacing and are attached to one another within data sheet by at least one cross support, the at least one spacing substantially separating the at least one cross support and attachment portion.

18. A laminar structure for forming a security sheet, the laminar structure comprising:
at least one body layer for forming a data sheet for displaying data; and
an attachment layer comprising a plurality of tabs and an attachment portion, wherein the plurality of tabs extend from the attachment portion for attaching the data sheet into a security document, wherein:
the plurality of tabs at least partially overlap the at least one body layer such that the attachment layer extends from the at least one body layer;
the plurality of tabs are attached to the at least one body layer by being at least partially embedded in the at least one body layer; and
at least one spacing separates at least two adjacent tabs of the plurality of tabs and the plurality of tabs are at least partially embedded in the at least one body layer by material of the at least one body layer at least partially filling the at least one spacing.

19. A method of forming a security sheet comprising:
locating an attachment layer to overlap at least one body layer, wherein the at least one body layer is for forming a data sheet for displaying data, wherein the attachment layer comprises a plurality of tabs and an attachment portion, wherein the plurality of tabs extend from the attachment portion for attaching a data sheet into a security document; and
attaching the plurality of tabs to the at least one body layer such that:
the attachment layer is attached to and extends from the at least one body layer and the at least one body layer forms the data sheet;
the plurality of tabs are attached to the data sheet by being at least partially embedded in the data sheet; and
at least one spacing separates at least two adjacent tabs of the plurality of tabs and the plurality of tabs are at least partially embedded in the data sheet by material of the data sheet at least partially filling the at least one spacing.

20. The method of claim 19 , wherein the method comprises forming the attachment layer, wherein forming the attachment layer comprises:
providing a textile comprising warps and wefts, wherein the plurality of tabs comprises at least portions of tab wefts of the wefts of the textile and at least one holding yarn is interlaced with at least one tab weft; and
removing the at least one holding yarn prior to the attachment step.

Assignees

• De La Rue Int Ltd

Inventors

• Dhillon Baljeet
• Sugdon Matthew
• Bobat Shireen

Classifications

• B42D25/24 Primary

  Passports · CPC title

• B42D25/36

  comprising special materials · CPC title

• B42D25/23

  Identity cards · CPC title

• B42D25/455

  using heat · CPC title

• B42D25/46

  using pressure · CPC title