FR3091497A1 - Method for producing a hinge of an information sheet of an identity document, information sheet of an identity document comprising a hinge obtained according to said method and identity document comprising said sheet of information - Google Patents

Abstract

A method of making a hinge of an information sheet of an identity document, an information sheet of an identity document comprising a hinge obtained according to said method and an identity document comprising said sheet of Information The object of the invention is 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 a hot-melt layer (38) and two woven layers (40, 42) arranged on either side of the hot-melt layer ( 38), the latter being nested in the meshes of the woven layers (40, 42) after assembly. The subject of the invention is also an information sheet (18) obtained from said method and an identity document (10) comprising at least one such information sheet (18). Figure 6

Description

Description

Title of the invention: Method for producing a hinge of an identity document information sheet, information sheet of an identity document comprising a hinge obtained according to said method and document identity including said information sheet

The present application relates to a method of producing a hinge of an information sheet of an identity document, to an information sheet of an identity document comprising a hinge obtained according to said method as well as an identity document comprising said information sheet.

Document EP1008459 describes an identity document which includes an information sheet, supporting at least one identifier of the holder of the identity document, linked to the rest of the identity document by a hinge. According to this document, the information sheet comprises an assembly of polycarbonate layers and a polypropylene layer which extends beyond the polycarbonate layers so as to define a strip of material connected 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 which comprises an information sheet linked to the rest of the identity document by a hinge comprising a textile layer positioned between two layers of reinforcement of adhesion in thermoplastic resin.

Document EP1502765 describes, like the previous documents, an identity document which presents an information sheet linked to the rest of the identity document by a hinge comprising only a woven layer.

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

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

To this end, the invention relates to a method of producing an information sheet of an identity document, said information sheet comprising at least one layer of information and a hinge. According to the invention, the hinge is an assembly of bonding layers comprising a hot-melt layer interposed between two woven layers having meshes, the hot-melt layer being nested in the meshes of the woven layers after assembly.

Unlike a hinge comprising a woven layer interposed between two polycarbonate layers which is not very flexible and whose polycarbonate layers can crack, the hinge according to the invention offers excellent hold and is flexible enough to allow the integrating identity document to keep a closed state.

According to other characteristics:

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

the hot-melt layer and the woven layers are subjected to at least one rolling step at a rolling temperature, the hot-melt layer being made of a first deformable material and / or fusible at the rolling temperature and the woven layers being made of a material having a melting temperature higher than the rolling temperature;

- each mesh of the woven layers has a square or rectangular section and has a smaller dimension between 0.23 and 0.26 mm;

- the hot-melt layer is made of polycarbonate;

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

the woven layers each have a thickness of between 50 and 100 μm;

the method further comprises a step of positioning at least one information layer on a first face of the assembly of link layers and / or at least one information layer on a second face of the assembly of tie layers as well as a laminating step so as to obtain cohesion between the information layer (s) and the assembly of tie layers.

The invention also relates to an information sheet obtained from said method and an identity document comprising at least one such information sheet.

Other characteristics and advantages will emerge from the description of the invention which follows, description given by way of example only, with reference to the appended drawings in which: [fig.l] is a perspective view of an identity document which illustrates an embodiment of the invention,

[fig-2] is a top view of the identity document of figure 1 in the open state, [fig-3] is a top view of the identity document of figure 1 in the closed state,

[fig.4] is a perspective view of an information sheet fitted with a hinge which illustrates an embodiment of the invention, [fig.5] is a section of an assembly of bonding layers of the information sheet visible in Figure 4, and [fig.6] is a section of the information sheet visible in Figure 4.

In Figure 1, there is shown an identity document 10, such as a passport, which has a front cover 12 and a back cover 14 interconnected at a junction area 16 forming a fold , an information sheet 18 as well as a plurality of sheets 20.

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

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

The information sheet 18 includes a rectangular main part 22 having first and second long sides 22.1 and 22.2 as well as first and second short sides 22.2, 22.4. When the information sheet 18 and the sheets 20 are assembled, the short sides of the sheets 20.1, 20.2 of the sheets 20 and the information sheet 18 are superimposed and the first large side of the information sheet 18 and the one of the long sides of the sheets 20.1, 20.2 of the sheets 20 are superimposed.

In addition to the central part 22, the information sheet 18 includes a hinge 24 connected 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 sheets 20 are connected by a seam line 26 positioned at the junction area 16 of the front and rear covers 12, 14, of the hinge 24 of the information sheet and folds 20.3 of the sheets 20.

For assembly, the identity document 10 includes a support sheet 28 (dotted in Figure 2) having a first sheet 28.1 forming a front plate configured to be glued against the inner face of the front cover 12 and a second sheet 28.2 forming a rear counter-plate configured to be glued against the internal face of the rear cover 14.

The assembly method comprises the steps of connecting the information sheet 18 to the support sheet 28 with several glue dots, positioning the other sheets 20, to connect with the seam line 26 the sheet d information 18, the support sheet 28 and the sheets 20, to glue the front and rear covers 12, 14 and the support sheet 28 then to fold the identity document 10.

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

Of course, the invention is not limited to this operating mode for assembly. Other solutions are possible.

The information sheet 18 comprises an assembly of connecting layers 30 which has a first face 30.1 and a second face 30.2 as well as at least one information layer 32 fixed to 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 assembly of link layers 30 and / or at least one information layer 34 fixed on the second face 30.2 of the assembly of bonding layers 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, for example white polycarbonate, a second transparent layer 32.2 in material plastic as well as a third transparent layer 32.3 of plastic, and on the second face 30.2, a first opaque layer 34.1 of plastic, in white polycarbonate for example, as well as a second transparent layer 34.2 of plastic, at least l one of the layers 32.1 to 32.3, 34.1 and 34.2 comprising at least one identifier of the holder of the identity document 10 and ensuring the function of information layer 32, 34.

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

The information layers 32, 34 or any other layer fixed to one of the first and / or second faces 30.1, 30.2 of the assembly of connecting layers 30 are rectangular and have the same dimensions as the main part 22 of information sheet 18.

The assembly of bonding layers 30 also includes 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 assembly of connecting layers 30 are respectively aligned with the first and second short 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 between the first and second large edges 36.1, 36.2 of the assembly of bonding layers 30 is greater than that separating the first and second long sides 22.1, 22.2 from the main part 22 so that the assembly of connecting layers 30 comprises a strip of material not covered by the main part 22 which forms the hinge 24.

According to the invention, the hinge is an assembly of connecting layers 30 which comprises a hot melt layer 38 interposed 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 least one rolling step at a given rolling temperature, the hot-melt layer 38 being made of a first deformable material and / or fusible at the rolling temperature and the woven layers 40, 42 being made of a material whose melting temperature is higher than the rolling temperature.

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

According to the invention, the assembly of bonding layers 30 comprises a single hot-melt layer 38 and only two woven layers 40, 42.

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

The hot melt layer 38 has a thickness of between 40 and 60 µm. According to one embodiment, the hot-melt layer 38 has a thickness of the order of 50 μm.

Each woven layer 40, 42 comprises natural or synthetic fibers which are arranged so as to define meshes delimiting openings passing through the woven layer 40, 42. Each mesh has a square or rectangular section and has a smaller dimension included between 0.23 and 0.26 mm.

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

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

The woven layers 40, 42 each have a thickness (corresponding approximately to 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.

According to a process for obtaining the information sheet, the woven layers 40, 42 are positioned on either side of the hot-melt layer 38 and the woven layers 40, 42 and the hot-melt layer 38 are subjected to a first rolling step at a first rolling temperature. During this step, the hot-melt layer 38 is embedded in the meshes of the woven layers 40, 42 so as to obtain excellent cohesion between the woven layers 40, 42 and the hot-melt layer 38. Thus, the meshes of the woven layers 40, 42 are closed by the material of the hot-melt layer 38. At the end of this first rolling step, the assembly of bonding layers 30 has a thickness of between 80 and 120 μm, of the order of 100 μm.

The information layers 32, 34 and any other layer are positioned on either side of the assembly of bonding layers 30 and this assembly is subjected to a second rolling step at a second rolling temperature. , so as to obtain cohesion between the information layer (s) and the assembly of link layers 30.

The first and second rolling steps are not further described because they can vary depending on the materials of the assembled layers.

Of course, the invention is not limited to this method of obtaining to obtain the assembly of the different layers of the information sheet 18. Similarly, the connecting layers 30 may not extend over the entire surface of the central part 22 but only over a part.

Claims (1)

Claims [Claim 1] Method for producing 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 ), characterized in that the hinge (24) is an assembly of connection layers (30) comprising a hot-melt layer (38) interposed between two woven layers (40, 42) having meshes, the hot-melt layer (38) being nested in the mesh of the woven layers (40, 42) after assembly. [Claim 2] Method for producing 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). [Claim 3] Method for producing an information sheet (18) according to one of the preceding claims, characterized in that the hot-melt layer (38) and the woven layers (40, 42) are subjected to at least one rolling step. a rolling temperature, the hot-melt layer (38) being made of a first deformable material and / or fusible at the rolling temperature and the woven layers (40, 42) being made of a material having a melting temperature higher than the rolling temperature . [Claim 4] Method for producing an information sheet (18) according to one of the preceding claims, 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. [Claim 5] Method 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. [Claim 6] Method for producing an information sheet (18) according to one of the preceding claims, characterized in that the hot-melt layer (38) has a thickness of between 40 and 60 µm. [Claim 7] Method 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. [Claim 8] Method for producing 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 bonding layers (30) and / or [Claim 9] [Claim 10] minus an information layer (34) on a second face (30.2) of the assembly of bonding layers (30) as well as a rolling step so as to obtain cohesion between the (or the) information layer (s) (32, 34) and the assembly of link layers (30). Information sheet (18) obtained from the method according to any one of the preceding claims. Identity document comprises at least one information sheet according to claim 9.