ES2950971T3 - Procedure for making a hinge of an information sheet of an identity document, information sheet of an identity document comprising a hinge obtained according to said procedure and identity document comprising said information sheet - Google Patents

Abstract

The invention relates to a method for producing an information sheet (18) of an identity document. According to the invention, the hinge (24) of the information sheet (18) is obtained by assembling by lamination a hot-melt layer (38) and two woven layers (40, 42) arranged on each side of the hot-melt layer. (38), the latter being embedded in the mesh of the woven layers (40, 42) after lamination, the woven layers (40, 42) and/or the hot melt layer (38) having characteristics that allow obtaining a compromise between a satisfactory strength for the hinge (24) and a flexibility for the hinge (24) that allows an identity document incorporating it to maintain a closed state. The invention also relates to an information sheet (18) obtained by said method and to an identity document (10) comprising at least one of said information sheets (18). (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Procedure for making a hinge of an information sheet of an identity document, information sheet of an identity document comprising a hinge obtained according to said procedure and identity document comprising said information sheet

The present application is related to a procedure for making a hinge of an information sheet of an identity document, with an information sheet of an identity document comprising a hinge obtained according to said procedure, as well as with an identity document that includes said information sheet.

Document EP1008459 describes an identity document comprising an information sheet, which supports at least one identifier of the holder of the identity document, joined to the rest of the identity document by a hinge. According to this document, the information sheet includes an assembly of polycarbonate layers and a polypropylene layer that extends beyond the polycarbonate layers to define a strip of material attached to the rest of the identity document and to form a hinge. According to this document EP1008459, the polypropylene layer is associated with a woven structure.

Document EP1812244 describes an identity document comprising an information sheet joined to the rest of the identity document by a hinge that includes a textile layer positioned between two adhesion reinforcing layers of thermoplastic resin.

Document EP1502765 describes, like the previous documents, an identity document that presents an information sheet joined to the rest of the identity document by a hinge that includes only a woven layer. Document EP2904547 (or DE 102012019308) describes the preamble of claim 1 or an insert intended for a small format multilayer portable data carrier comprising, according to one embodiment, a layer of plastic material inserted between two layers of fabric. This document proposes a solution that aims to obtain an insert with an embossed surface.

All these embodiments are not fully satisfactory. Indeed, the hinge produced in this way is either too flexible and does not offer sufficient support in the direction of the hinge or is too rigid and does not allow the identity document to maintain a closed state.

The present invention aims to remedy all or part of the drawbacks of the prior art.

To this end, the object of the invention is a procedure for making an information sheet of an identity document, said information sheet comprising at least one information layer and a hinge that includes a hot-melt layer inserted between two woven layers that have meshes. , the hot melt layer being embedded in the meshes of the woven layers after assembly.

According to the invention, the hot melt layer and the woven layers are subjected to at least one lamination step at a lamination temperature, so that the hot melt layer is embedded in the meshes of the woven layers after the lamination step, the hot-melt layer being a first material that is deformable and/or meltable at the lamination temperature, the woven layers and/or the hot-melt layer having characteristics that give the hinge satisfactory resistance and flexibility that allows an identity document that incorporates maintain a closed state.

According to the invention, each mesh of the woven layers has a square or rectangular section and has a smaller dimension, between 0.23 and 0.26 mm.

According to other characteristics:

- the hinge comprises a single hot-melt layer and only two woven layers;

- the hot melt layer is made of polycarbonate;

- the hot melt layer has a thickness between 40 and 60 gm;

- the woven layers each have a thickness between 50 and 100 |um;

- the method further comprises a step of positioning at least one layer of information on a first face of the assembly of bonding layers and/or at least one layer of information on a second face of the assembly of bonding layers, as well as a lamination step to obtain cohesion between the information layer (or layers) and the assembly of binding layers.

The object of the invention is also an information sheet obtained from said procedure and an identity document that comprises at least one information sheet of this type.

Other features and advantages will emerge from the description of the invention that follows, a description given by way of example only, with reference to the accompanying drawings, among which:

- Figure 1 is a perspective view of an identity document illustrating an embodiment of the invention,

- Figure 2 is a top view of the identity document of Figure 1 in the open state,

- Figure 3 is a top view of the identity document of Figure 1 in the closed state,

- Figure 4 is a perspective view of an information sheet equipped with a hinge illustrating an embodiment of the invention,

- Figure 5 is a section of an assembly of bonding layers of the information sheet visible in Figure 4 and - Figure 6 is a section of the information sheet visible in Figure 4.

In Figure 1, an identity document 10, such as a passport, for example, is represented, which has a front cover 12 and a rear cover 14 joined together at the level of a confluence area 16 that forms a fold, a sheet of information 18, as well as a plurality of pages 20.

The front and back covers 12, 14 are made of a more semi-rigid material (more rigid than pages 20).

Each page 20 is made of paper and comprises two rectangular sheets 20.1,20.2, joined by a fold 20.3.

The information sheet 18 comprises a rectangular main part 22 having first and second large sides 22.1 and 22.2, as well as first and second small sides 22.2, 22.4. When information sheet 18 and pages 20 are assembled, the small sides of sheets 20.1, 20.2 of pages 20 and information sheet 18 are overlapped and the first large side of information sheet 18 and one from the large sides of sheets 20.1,20.2 on pages 20.

In addition to the central part 22, the information sheet 18 comprises a hinge 24 attached to the second large side 22.2 of the central part 22.

The front and rear covers 12, 14, the information sheet 18 and the pages 20 are joined by a seam line 26 positioned at the level of the confluence area 16 of the front and rear covers 12, 14, of the hinge 24 of information sheet and folds 20.3 on pages 20.

For assembly, the identity document 10 comprises a support page 28 (dotted in Figure 2) having a first sheet 28.1 forming a front counterplane configured to adhere against the inner face of the front cover 12 and a second sheet 28.2 which forms a rear counterplane configured to abut against the inner face of the rear cover 14.

The assembly procedure includes the steps that consist of joining the information sheet 18 to the support page 28 thanks to several gluing points, positioning the other pages 20, joining, thanks to the sewing line 26, the information sheet 18, support page 28 and pages 20, gluing the front covers, back covers 12, 14 and support page 28, then folding the ID 10.

According to an assembly procedure, two identity documents are assembled simultaneously, then separated by a cutout perpendicular to the seam line 26.

Of course, the invention is not limited to this operating mode for assembly. Other solutions can be considered.

The information sheet 18 comprises an assembly of binding layers 30 having a first face 30.1 and a second face 30.2, as well as at least one information layer 32 fixed on one of the first or second faces 30.1, 30.2.

According to one configuration, the information sheet 18 comprises at least one information layer 32 fixed on the first face 30.1 of the binding layer assembly 30 and/or at least one information layer 34 fixed on the second face 30.2 of the layer assembly union 30.

According to an embodiment visible in Figure 6, the information sheet 18 comprises, on the first face 30.1, a first opaque layer 32.1 of plastic material, of white polycarbonate, for example, a second transparent layer 32.2 of plastic material, as well as a third transparent layer 32.3 of plastic material and on the second face 30.2, a first opaque layer 34.1 of plastic material, of white polycarbonate, for example, as well as a second transparent layer 34.2 of plastic material, comprising at least one of the layers 32.1 to 32.3, 34.1 and 34.2 at least one identifier of the holder of the identity document 10 and ensuring the information layer function 32, 34.

These different layers 32.1 to 32.3, 34.1 and 34.2 are not described further, since they are known to those skilled in the art.

The information layers 32, 34 or any other layer fixed on one of the first and/or second faces 30.1, 30.2 of the binding layer assembly 30 are rectangular and have the same dimensions as the main part 22 of the information sheet 18 The bond layer assembly 30 also comprises a first small edge, a second small edge, a first large edge 36.1 and a second large edge 36.2.

According to a configuration visible in Figure 6, when the information sheet 18 is assembled, the first and second small edges of the binding layer assembly 30 are respectively aligned with the first and second small sides 22.2, 22.4 of the main part 22 and the first large edge 36.1 is aligned with the first large side 22.1 of the main part 22. The distance separating the first and second large edges 36.1, 36.2 of the tie layer assembly 30 is greater than that separating the first and second sides large 22.1, 22.2 of the main part 22, whereby the assembly of joining layers 30 comprises a strip of material not covered by the main part 22 that forms the hinge 24.

According to the invention, the hinge is an assembly of bonding layers 30 comprising a hot-melt layer 38 inserted between two woven layers 40, 42. According to one embodiment, the hot-melt layer 38 and the woven layers 40, 42 are assembled during at at least one lamination step at a given lamination temperature, the hotmelt layer 38 being of a first material that is deformable and/or meltable at the lamination temperature. The woven layers 40, 42 are made of a material whose melting temperature is higher than the lamination temperature.

The woven layers 40, 42 are positioned symmetrically with respect to the central hot melt layer 38.

The bond layer assembly 30 comprises a single hot melt layer 38 and only two woven layers 40, 42.

According to the invention, the hot melt layer 38 and the woven layers 40, 42 have characteristics that give the hinge 24 satisfactory resistance, in particular, to tearing off and a flexibility that allows an identity document incorporating it to maintain a closed state.

According to one embodiment, the hot melt layer 38 is made of polycarbonate.

The hot melt layer 38 has a thickness between 40 and 60 μm. According to one embodiment, the hotmelt layer 38 has a thickness of the order of 50 μm. This choice of thickness makes it possible to obtain a compromise between the mechanical resistance of the hinge 24 and its flexibility that allows an identity document that incorporates it to maintain a closed state.

Each woven layer 40, 42 comprises natural or synthetic fibers that are arranged to define meshes that delimit openings that pass through the woven layer 40, 42. Each mesh has a square or rectangular section and has a smallest dimension between 0.23 and 0. .26mm. This choice for the meshes makes it possible to obtain a compromise between the mechanical resistance of the hinge 24 and its flexibility that allows an identity document that incorporates it to maintain a closed state.

According to one configuration, the meshes of each woven layer 40, 42 have identical square sections of 0.23 to 0.26 mm on each side.

The woven layers 40, 42 may have different or identical meshes.

The woven layers 40, 42 each have a thickness (corresponding to approximately twice the diameter of the fibers) between 50 and 100 μm. According to one embodiment, the woven layers 40, 42 have a thickness of the order of 85 μm. This choice of thickness makes it possible to obtain a compromise between the mechanical resistance of the hinge 24 and its flexibility that allows an identity document that incorporates it to maintain a closed state. According to a procedure for obtaining the information sheet, the woven layers 40, 42 are positioned on both sides of the hot melt layer 38 and the woven layers 40, 42 and the hot melt layer 38 are subjected to a first lamination step to a first lamination temperature. During this step, the hot melt layer 38 is embedded in the meshes of the woven layers 40, 42 to obtain excellent cohesion between the woven layers 40, 42 and the hot melt layer 38. In this way, the meshes of the woven layers 40, 42 are sealed by the material of the hot-melt layer 38. At the end of this first lamination stage, the assembly of bonding layers 30 has a thickness between 80 and 120 μm, of the order of 100 μm.

The information layers 32, 34, as well as any other layers are positioned on both sides of the assembly of bonding layers 30 and this assembly is subjected to a second lamination stage at a second lamination temperature, to obtain a cohesion between the or the information layer(s) and the assembly of binding layers 30.

The first and second lamination stages are not described further as they may vary depending on the materials of the assembled layers.

Of course, the invention is not limited to this mode of obtaining to obtain the assembly of the different layers of the information sheet 18. Likewise, the joining layers 30 may not extend over the entire surface of the central part 22, but only on one part.

Claims (9)

1. Procedure for making an information sheet (18) of an identity document (10), said information sheet (18) comprising at least one information layer (32, 34) and a hinge (24), said hinge (24) an assembly of bonding layers (30) that includes a hot-melt layer (38) inserted between two woven layers (40, 42) that have meshes, the hot-melt layer (38) and the woven layers (40, 42) being ) subjected to at least one lamination step at a lamination temperature, so that the hot melt layer (38) is embedded in the meshes of the woven layers (40, 42) after the lamination step, the layer being hot melt (38) of a first deformable and/or meltable material at the lamination temperature and presenting the woven layers (40, 42) and/or the hot melt layer (38) characteristics that allow obtaining a compromise between a satisfactory resistance for the hinge (24) and a flexibility for the hinge (24) that allows an identity document that incorporates it to maintain a closed state, the procedure being characterized in that each mesh of the woven layers (40, 42) has a square or rectangular section and has a smaller dimension, between 0.23 and 0.26 mm. 2. Procedure for making an information sheet (18), according to claim 1, characterized in that the hinge (24) comprises a single hot-melt layer (38) and only two woven layers (40, 42). 3. Procedure for producing an information sheet (18) according to one of the preceding claims, characterized in that the hot melt layer (38) is made of polycarbonate. 4. Procedure for producing an information sheet (18) according to one of the preceding claims, characterized in that the hot melt layer (38) has a thickness between 40 and 60 μm. 5. Procedure for producing an information sheet (18) according to one of the preceding claims, characterized in that the woven layers (40, 42) each have a thickness between 50 and 100 μm. 6. Procedure for producing an information sheet (18) according to one of the preceding claims, characterized in that the woven layers (40, 42) are made of a material that has a melting temperature higher than the lamination temperature. 7. Procedure for creating an information sheet (18) according to one of the preceding claims, characterized in that it comprises a step of positioning at least one information layer (32) on a first face (30.1) of the assembly of layers of information. bond (30) and/or at least one information layer (34) on a second face (30.2) of the assembly of bond layers (30), as well as a lamination step to obtain cohesion between the layer (or layers). (s) of information (32, 34) and the assembly of binding layers (30). 8. Information sheet (18) obtained from the procedure according to any one of the preceding claims. 9. Identity document comprising at least one information sheet according to claim 8.