JP2021192956A - Laminated body - Google Patents

Abstract

To provide a laminated body capable of deterring a tampering action as removal of a data page by fraying meshes at a hinge part or by tearing from a hole and capable of preventing reuse by leaving traces of tampering even when tampering is done.SOLUTION: A laminated body of the present invention has a second thermoplastic resin layer laminated in the lower layer of a first thermoplastic resin layer with transparency, and an information part formed by at least laminating a third thermoplastic resin layer with a network structure in at least a part between the first thermoplastic resin layer and the second thermoplastic resin layer. The first thermoplastic resin layer is a laminated body with a lens formation area where multiple lenses are regularly arranged and which is arranged at least on the part overlapping with the third thermoplastic resin layer.SELECTED DRAWING: Figure 1

Description

The present invention relates to a laminate that can be prevented from being reused.

With the progress of international exchange, the movement of human resources is becoming active. Along with this, there is an increasing need for passports to identify and identify individuals.

ID cards are often used as a means of identifying individuals, and in order to give passports specifications similar to those of ID cards, countries that use a data page containing passport holder information as a plastic base material. It is increasing. As a means of binding the data page of the plastic base material to the passport, the data page of the plastic base material is held in the passport via a hinge which has flexibility and is hard to tear after binding.

As an example, a hinged data page is disclosed in which the hinge portion of the mesh structure is arranged so as to be inserted into the data page in the vicinity portion adjacent to the upper surface or the lower surface of the data page. (For example, see Patent Document 1).

Further, a hinge formed of a functional yarn containing a fluorescent material or the like and a data page with a hinge using the hinge are disclosed (see, for example, Patent Document 2).

Japanese Patent No. 4990906 WO 2016/091277 Gazette

However, in the technique of Patent Document 1, since the hinge portion made of the mesh-like woven fabric is attached to the lower layer or the upper layer of the data page and integrated, the hinge portion is broken or torn from the hole. When it is removed from the data page due to the above, there is a problem that it is difficult to determine whether it is a genuine product or not because it is difficult to leave a trace of tampering.

Further, since the technique of Patent Document 2 is a hinge portion made of a mesh-like woven fabric using a fluorescent material, there is a problem that a means for confirming the fluorescence of the hinge portion is required.

The present invention is intended to solve the above-mentioned problems, and by forming a region in which a moire pattern appears in a part of the sheet overlapping with the hinge portion, the mesh of the hinge portion is cracked or a hole is formed. It suppresses the act of tampering with removing the data page due to the tearing of the data page, and provides a laminate that can be prevented from being reused by leaving traces of tampering even when the data page is tampered with.

The present invention relates to a second thermoplastic resin layer laminated on a lower layer of a transparent first thermoplastic resin layer, and at least a part between the first thermoplastic resin layer and the second thermoplastic resin layer. It is a laminate having an information part formed by at least laminating a third thermoplastic resin layer having a network structure, and the first thermoplastic resin layer is at least on a portion overlapping with the third thermoplastic resin layer. It is a laminate characterized by having a lens forming region in which a plurality of lenses are regularly arranged.

The present invention includes a printing layer between the second thermoplastic resin layer and the third thermoplastic resin layer which overlaps with the lens forming region and / or between the lens forming region and the third thermoplastic resin layer. It is a laminated body characterized by.

The present invention is a laminate characterized in that the lens forming region includes a latent image region formed by partially shifting the phase of the lens arrangement in a predetermined direction.

The present invention is a laminated body characterized by having a hinge portion formed by projecting a third thermoplastic resin layer from the information portion.

In the present invention, the moire expression structure in which the lens structure is formed by embossing the hinge portion suppresses the act of tampering with removing the data page, and even when the data page is tampered with, the presence or absence of tampering is determined by the presence or absence of the lens structure. Therefore, it is possible to provide a laminated body having a high deterrent to falsification.

The figure which shows the laminated body (A1) of this invention. The figure which shows the 1st thermoplastic resin layer. The figure which shows the 3rd thermoplastic resin layer. The figure which shows the effect of the laminated body (A1) of this invention. The figure which shows the manufacturing method of the laminated body (A1) of this invention. The figure which shows the laminated body (A2) of this invention. The figure which shows the laminated body (A3) of this invention. The figure which shows the laminated body (A3) of this invention. The figure which shows the effect of the laminated body (A3) of this invention. FIG. 3 is an example diagram of a lens forming region of the present invention. The figure which shows the passport (A4) of this invention. An example diagram showing a comparison level. The figure which shows the tensile strength test of this invention.

A mode for carrying out the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments described below, and includes various other embodiments as long as it is within the scope of the technical idea in the claims.

(First embodiment)
(Laminated body)
FIG. 1 shows a laminated body (A1) in the first embodiment using a card as an example. 1A is a perspective view of the laminated body (A1), and FIG. 1B is a cross-sectional view of the laminated body (A1). As shown in FIG. 1A, the laminated body (A1) is a second layer laminated on a transparent first thermoplastic resin layer (4) and a lower layer of the first thermoplastic resin layer (4). A third thermoplastic resin layer (3) having a network structure is laminated between the first thermoplastic resin layer (4) and the second thermoplastic resin layer (5). The first thermoplastic resin layer (4) includes a lens forming region (2) in which a plurality of lenses are regularly arranged.

(First thermoplastic resin layer)
The first thermoplastic resin layer (4) is a transparent thermoplastic resin sheet, and is laminated on the upper layer of the second thermoplastic resin layer (5) described later. The reason why the first thermoplastic resin layer (4) is required to be transparent is that the lens forming region (2) is formed in the portion overlapping with the third thermoplastic resin layer (3) by processing the embossed plate surface described later. Because. The thickness of the first thermoplastic resin layer (4) is such that the thickness of the laminated body (A1) is the standard of the passport (“Doc9303 Machine Readable Documents Steve Edition, 2015 Part4”, hereinafter referred to as “ICAO Doc9303”. ), Since the maximum is set to 0.90 mm, it is appropriately set according to the thickness of the information unit (1), but is preferably 0.1 mm or more and 0.25 mm or less. If it is less than 0.1 mm, it becomes difficult to process and form the lens forming region (2), and if it exceeds 0.25 mm, it may exceed the above-mentioned passport standard (“ICAO Doc9303”).

The purpose of defining the maximum thickness of the laminated body (A1) to be 0.90 mm by the passport standard (“ICAO Doc9303”) is the Machine Readable Zone (hereinafter, “MRZ”) at the outer end of the data page. This is to correspond to a swipe reader scanning through a gap in order to read the OCR character described in the information unit (1) in the area called ().

As the material of the thermoplastic resin sheet forming the first thermoplastic resin layer (4), polycarbonate (PC) or polyethylene terephthalate glycol (PETG), polyvinyl chloride (PVC), acrylonitrile-butagen-styrene copolymer resin ( A known thermoplastic resin sheet such as ABS resin) can be used. The thermoplastic resin sheet forming the first thermoplastic resin layer (4) may have a multi-layer structure, and both sides are made of the same series of materials, preferably both sides are made of the same material, and two or three layers of the same series of materials are used. It may be formed by a plurality of layers.

(Lens formation area)
FIG. 2 is an example diagram in which a lens forming region (2) is formed on the first thermoplastic resin layer (4). The first embodiment includes a lens forming region (2) in which lenses (2a) are regularly arranged over the entire first thermoplastic resin layer (4), but the lens (2a) will be described later. It may be formed in a portion overlapping with the third thermoplastic resin layer (3), and may be formed in a part of the first thermoplastic resin layer (4).

The lens forming region (2) has a concavo-convex structure formed by pressing the first thermoplastic resin layer (4) with an embossed plate described later, and may be either a convex lens or a concave lens, and is a spherical surface. Known lenses such as lenslets, cylindrical lenslets, plano-convex lenslets, biconvex lenslets, and Fresnel lenslets can be used. In the first embodiment, the lenses (2a) are arranged in a matrix to form the lens forming region (2), but the arrangement of the lenses (2a) allows any arbitrary characters, figures, symbols, and the like. A pattern may be formed.

As shown in the enlarged view of FIG. 2A, it is desirable that the lens (2a) forming the lens forming region (2) has the same color and diameter (S1) and is transparent. The diameter (S1) of the lens (2a) is 1 μm or more and 250 μm or less. It is difficult to form a lens (2a) smaller than 1 μm, and when it exceeds 250 μm, the appearance of the moire pattern becomes unclear. 2 (b) is a cross-sectional view taken along the line AA'of FIG. 2 (a), and the height (H1) of the lens (2a) is 0.5 μm or more and 125 μm or less. It is difficult to form a lens (2a) having a size of less than 0.5 μm, and if it exceeds 125 μm, the focal length of the lens (2a) becomes long and the moire pattern becomes unclear. Further, in this example, the pitch (P1) in which the lenses (2a) are arranged is the same, but it is sufficient that the lenses (2a) have a predetermined regularity, and the arrangement direction and the pitch (P1) do not have to be the same.

The lens (2a) of the first embodiment is a hemispherical convex lens as an example, but the shape of the lens is not particularly limited, and the shape may be a circle, a square, a rectangle, an ellipse, a polygon, or the like. Can be done. Further, it is desirable that the shapes of the lenses are all the same, but the shape is not particularly limited.

(Second thermoplastic resin layer)
The second thermoplastic resin layer (5) is not particularly limited as long as it does not affect the optical characteristics of the lens forming the lens forming region (2), and is colored (including white) or has transparency as described above. It is formed of a plastic resin sheet. The thickness of the second thermoplastic resin layer (5) is omitted because it is the same as that of the first thermoplastic resin layer (4) described above.

(Third thermoplastic resin layer)
The third thermoplastic resin layer (3) is a thermoplastic resin that closes the opening (3c) shown in the enlarged view of FIG. 3 (a) and the opening (3c) shown in the cross-sectional view of FIG. 3 (b). It is an example figure which shows the mesh-like thermoplastic resin sheet which consists of a layer (3d). Condensation polymerized plastics and polymerized plastics are suitable as the material of the third thermoplastic resin layer (3). Examples thereof include polyester, PET, PET-G, polyamide, polyimide, aramid, polycarbonate, polyacrylic nitrile, polytetrafluoroethylene, polyethylene, polypropylene, polyvinyl chloride and the like, and they may be used in combination.

As shown in the enlarged view of FIG. 3A, the mesh structure of the third thermoplastic resin layer (3) has an opening (3c) formed by the warp threads (3a) and the weft threads (3b) in the vertical direction (3c). It is a grid pattern in which the pitch (P3) of T2) and the pitch (P2) in the lateral direction (T1) are arranged at the same pitch. In the first embodiment, the quadrangular openings (3c) are arranged in a grid pattern, but the shape of the openings (3c) may be a polygon such as a triangle or a pentagon, and the openings ( If the arrangement of 3c) is regular, it is not limited to a grid pattern, and a known network structure can be used. In addition, the mesh structure has a third thermoplastic resin layer (a third thermoplastic resin layer by forming patterns such as characters, figures, and symbols by applying ink by offset printing or ink jet printing, or by deforming by processing such as laser and embossing. The design can be maintained in 3) as well.

The color of the third thermoplastic resin layer (3) is not particularly limited as long as it does not affect the optical characteristics of the lens in the lens forming region (2), and is a colored (including white) or transparent third heat. The plastic resin layer (3) can be used. The thickness of the third thermoplastic resin layer (3) is 0.09 mm or more and 0.15 mm or less. If it is less than 0.09 mm, the tear strength is applied, and if it exceeds 0.15 mm, it becomes difficult to process the hinge portion to be thread-stitched in a booklet when it is formed as a hinge portion described later.

The shape of the opening (3c) of the network structure of the third thermoplastic resin layer (3) is not particularly limited, and may be a triangular shape, a square shape, a rectangular shape, or a polygonal shape. The size of the opening (3c) is preferably substantially the same as that of the lens (2a), but preferably the length (S2) in the horizontal direction (T1) and the length (S3) in the vertical direction (T2). Is 0.15 mm or more and 2.0 mm or less. If it is less than 0.15 mm, it becomes difficult to develop a moire pattern, and if it exceeds 2.0 mm, the strength of the third thermoplastic resin layer (3) decreases.

Further, the relationship between the opening (3c) and the above-mentioned lens (2a) may be such that the opening (3c) and the lens (2a) are superimposed, but the opening is an effect of expressing the moire pattern (6). It is preferable to arrange the lenses (2a) with the lens (2a) shifted by half a pitch with respect to (3c).

(Moire pattern)
FIG. 4 is a simplified diagram showing the effect of expressing the moire pattern (6) of the laminated body (A1). The moire pattern (6) is a striped pattern created by light interference when a geometric pattern composed of parallel lines or grids is superimposed or slightly shifted at small intervals. It seems that it can be observed on a daily basis when two stripes and screen doors are overlapped and viewed through. As shown in FIG. 4A, the laminated body (A1) of the present invention has the lens forming region (2) and the lens forming region (2) shown in FIG. 4B by observing at an angle of observation (Z1, Z2). It can be visually recognized that the appearance position of the moire pattern (interference fringes) (6) due to the mesh structure of the three thermoplastic resin layers (3) changes.

Alternatively, the moire pattern (6) may be confirmed by using an image processing means. For example, the lens forming region (2) is imaged, and the image data of the lens forming region (2) is subjected to a two-dimensional high-speed Fourier transform. , The characteristics of the power spectrum image are expressed in the frequency domain from the processing result, and the moire analysis is performed based on the information on the directionality of the network structure laminated in the lens forming region (2) and the spacing between the networks from the distribution of the spectrum. Two-dimensional Fourier transform is performed on the captured brightness image data, and the moire frequency and intensity are calculated from each frequency and each peak intensity of the network structure of the lens forming region (2) and the third thermoplastic resin layer (3). Then, the Moire may be analyzed.

(Manufacturing method)
As shown in FIG. 5A, in the laminate (A1) of the present invention, the upper layer is the first thermoplastic resin layer (4), the intermediate layer is the third thermoplastic resin layer (3), and the lower layer is the first. After arranging the second thermoplastic resin layer (5), it is sandwiched by a molded press plate (7) composed of an upper plate (7a) and a lower plate (7b) shown in FIG. 5 (b), and thermocompression bonded in the vertical direction. Obtained at.

By thermocompression bonding at a heating temperature equal to or higher than the softening point temperature of each thermoplastic resin layer constituting the laminated body (A1), the respective thermoplastic resin layers are firmly adhered to each other. This makes it difficult to disassemble the laminated body (A1), and makes it possible to prevent forgery and falsification of personal information and the like given to the laminated body (A1).

(Second embodiment)
Next, the laminated body (A2) in the second embodiment shown in FIG. 6 will be described using a data page as an example. As shown in FIG. 6A, the laminate (A2) in the second embodiment is partly located between the first thermoplastic resin layer (4) and the second thermoplastic resin layer (5). It is an example of the information unit (1) in which the third thermoplastic resin layer (3) which is the hinge sheet is laminated, and has a configuration in which the hinge sheet is projected from the information unit (1) to form the hinge portion (3f). The differences from the first embodiment will be described.

As shown in FIG. 6B, the laminated body (A2) of the second embodiment has a portion (3) on which the first thermoplastic resin layer (4) and the third thermoplastic resin layer (3) are overlapped. The lens forming region (2) is formed only in 3e).

The length (U1) of the lens forming region (2) is given to the data page because the length in the short side direction of the data page is defined as 88 mm in the passport standard (“ICAO Doc9303”). Care must be taken not to affect the information received. Therefore, a value of about 3 mm to 15 mm is desirable as a value that satisfies the adhesive area and the bonding strength between the lens forming region (2) and the third thermoplastic resin layer (3).

Further, the length of the hinge portion (3f) protruding from the information portion (1) is preferably 10 mm or more and 30 mm or less because if it is too short, it cannot be sewn with a thread when it is closed in a booklet described later.

(Third embodiment)
Next, the hinged laminate (A3) in the second embodiment shown in FIG. 7 will be described. In the hinged laminate (A3) in the third embodiment, the information unit (8) is formed between the third thermoplastic resin layer (3) and the second thermoplastic resin layer (5). It is an example of 1), and the difference from the first embodiment and the second embodiment will be described.

In the third embodiment, the printed layer (8) is a portion (3e) on which the lens forming region (2) and the third thermoplastic resin layer (3) are overlapped, and the second thermoplastic resin layer (5). Although it is formed between them, it may be formed as a whole between the third thermoplastic resin layer (3) and the second thermoplastic resin layer (5). Further, the printed layer (8) may be formed by printing on either the second thermoplastic resin layer (5) or the third thermoplastic resin layer (3). The production of the print layer (8) is not particularly limited as long as it is not a printing method for forming a convex shape, and a known printing method such as gravure printing, offset printing, flexographic printing, or ink jet printing method can be used. The ink used is not particularly limited, and fluorescent ink, infrared ray transmitting / absorbing ink, metallic ink, color shift ink, pearl ink, metallic luster ink and the like can be used.

(Print layer)
As shown in FIG. 8, the print layer (8) has pixels (9) arranged in a matrix. As an example, as shown in FIG. 8B, the pixels (9) are yellow (hereinafter referred to as “Y”) (9Y), magenta (hereinafter referred to as “M”) (9M), and cyan (hereinafter referred to as “C”). (9C), a plurality of pixels (9) of each color are arranged in a matrix with a predetermined pitch (P4, P5). The grid lines are provided for convenience in order to explain the positional relationship (uniformity) between the pixel (9), the mesh structure, and the lens region. Further, the pixels (9) are regularly arranged in a matrix as an example, and may be an arrangement of characters, symbols, figures, or the like. The reason why it is preferable to arrange the pixels (9) in a matrix is to clarify the appearance of the color moire pattern (15).

As shown in FIG. 8B, in the third embodiment, the predetermined pitches (P4, P5) are shifted from the pitches of the openings (3c) and the lens (2a) for the pixels (9) of each color. Although they are arranged, they may be the same. Further, the size of the pixel (9) constituting the print layer (8) is appropriately set depending on the size of the opening (3c) and the lens (2a), but the appearance of the color moire pattern (15) described later is exhibited. When considered, it is desirable that it is smaller than the opening (3c) and the lens (2a). When it is larger than the opening (3c) and the lens (2a), the appearance of the color moire pattern (15) becomes unclear. The preferable range of the predetermined pitch (P4, P5) is 90 μm or more and 170 μm or less, and the color moire pattern (15) is clearly expressed in the range.

(Color moire pattern)
FIG. 9 is a simplified diagram showing the effect of developing the color moire pattern (15) of the laminated body (A3). As shown in FIG. 9 (a), the laminated body (A3) of the present invention has the lens forming region (2) shown in FIG. 9 (b) printed by tilting the observation angles (Z1 and Z2). A color moire pattern (15) due to the network structure of the layer (8) and the third thermoplastic resin layer (3) can appear.

Further, in the third embodiment, the lenses (2a) are arranged at the same pitch, but a part of the lens forming region (2) is out of phase in a predetermined direction to form a latent image region (10). May be formed. For example, as shown in FIG. 10A, the lens (2a) is arranged in the vertical and horizontal directions (T2, T1) with a 1/2 pitch phase shift, and the latent image region (10) composed of the character "12" is arranged. ) Is formed, as shown in FIG. 10 (b), a part of the transparent lens forming region (2) is slightly displaced. Therefore, when observed from the front (Z3), the latent image region is formed. Although (10) cannot be visually recognized, when the laminated body (A3) is tilted and observed (Z1, Z2), the latent image region (10) can be visually recognized as a color moire pattern (15).

The laminates (A1, A2, A3) of the first to third embodiments are the second thermoplastic resin layer (5) laminated on the lower layer of the first thermoplastic resin layer (4). A third thermoplastic resin layer (3) having a network structure is laminated between the first thermoplastic resin layer (4) and the second thermoplastic resin layer (5). A known thermoplastic resin sheet such as an IC sheet, a laser coloring sheet, a protective sheet, a core sheet, a printing sheet or a hologram sheet (optical change element layer) may be laminated on the lower layer of the thermoplastic resin layer (5). ..

(passport)
Next, the passport (A4) used for the laminated body (A2) will be described. Since the same effect is obtained in the laminated body (A3), an example in which the laminated body (A2) is used will be described.

FIG. 11 shown in this example is an example of a passport (A4) formed by thread binding the hinge portion (3f) of the laminated body (A2) of FIG. As shown in FIG. 11, the passport (A4) is formed by the laminated body (A2) and each page (11), and as shown in the AA'cross-sectional view of FIG. 11 (b), the laminated body (A2) is formed. Each page (11) and a cover sheet or a back cover sheet (12) attached to the cover sheet are formed by sewing a hinge portion (3f) with a thread (13).

In the present embodiment, the hinge portion (3f) is thread-stitched on the cover or the back cover (12) by sewing machine binding to form a passport (A4), but the passport (A4) is formed by adhesive or thermocompression bonding with the hinge portion (3f). It may be integrated. Further, it may be used for booklets such as passbooks instead of passports (A4).

Examples of the present invention will be described with reference to FIGS. 6 and 7 in the same manner as in the above-described embodiments. The contents of the present invention are not limited to the scope of these examples.

(Example 1)
Transparent polycarbonate (PC: trade name "WC-020", thickness 0.10 mm, dimension 100 mm) as a thermoplastic resin sheet on the first thermoplastic resin layer (4) forming the laminate (A2) shown in FIG. (Vertical) x 300 mm (horizontal): manufactured by Mitsubishi Gas Chemical Company, Ltd.) was used. Further, a white IC-embedded polycarbonate sheet (thickness 0.40 mm, dimensions 100 mm (length) × 300 mm (horizontal)) was used for the second thermoplastic resin layer (5). The third thermoplastic resin layer (3) has a mesh sheet (material: polyester, thickness: 0.5 mm) having a square opening (3c) (vertical direction (T2) 0.5 mm × horizontal direction (T1) 0.5 mm). 0.11 mm and dimensions of 50 mm (vertical) x 300 mm (horizontal)) were used.

The overlapping portion forming the lens forming region (2) is a part of the third thermoplastic resin layer (3) between the first thermoplastic resin layer (4) and the second thermoplastic resin layer (5). The portion (3e) superimposed on the lens (3e) was laminated, and the length (U1) of the lens forming region (2) was set to 15 mm. Further, the length of the hinge portion (3f) is set to 15 mm.

(Thermocompression bonding)
In order to thermocompression-bond the material having the above-mentioned laminated structure, first, an ultrasonic adhesive machine (“SUH-30CW” manufactured by Suzuki Motor Corporation) was used to temporarily fix the material.

The laminate (A2) was produced at 160 ° C to 185 ° C using an SD type molding press (“SDOP-1042-2HC-AT-WC1V-PG3” manufactured by Dumbbell Co., Ltd.) as shown in FIG. It was produced by thermocompression bonding for 30 seconds at a mechanical setting of 2.5 MPa, and after heat welding, it was cooled to 50 ° C.

In the molded press plate (7) composed of the upper plate (7a) and the lower plate (7b) shown in FIG. 5 (b), unevenness is formed only in the portion forming the lens forming region (2), and the lens forming region is formed. The diameter (S1) of the lens (2a) forming (2) is 160 μm, the pitch (P1) is 170 μm, and the height (H1) is about 15 μm.

(Example 2)
In the second embodiment, the printed layer (8) of the laminated body (A3) shown in FIG. 7 is overlapped with the lens forming region (2) and the third thermoplastic resin layer (3), and the second portion (3e). This is an example formed between the thermoplastic resin layers (5) of the above.

The print layer (8) was formed in a matrix by an inkjet printer as shown in FIG. 8 (a). Since each pixel (9) is minute, each color of "Y", "M", and "C" cannot be discriminated by the naked eye and can be visually recognized as gray. Since each thermoplastic resin layer, thermocompression bonding, etc. are the same as in Example 1, they are omitted.

(Observation evaluation)
As shown in FIG. 4A, the laminated body (A2) of the first embodiment is observed at an inclined observation angle (Z1, Z2), whereby the lens forming region (2) and the second lens forming region (2) shown in FIG. 4B are observed. It was possible to confirm the moire pattern (interference fringes) (6) due to the network structure of the three thermoplastic resin layers (3). Further, as shown in FIG. 9 (a), the laminated body (A3) of Example 2 is observed by tilting the observation angles (Z1, Z2), and the lens forming region (2) shown in FIG. 9 (b) is observed. ), The color moire pattern (15) due to the mesh structure of the printed layer (8) and the third thermoplastic resin layer (3) could be confirmed.

(Peeling test)
The hinge portion (3f) was peeled off from the laminates (A2, A3) of Examples 1 and 2 using tweezers. As a comparison, a hinge sheet is formed in a part between the first thermoplastic resin layer (4) and the second thermoplastic resin layer (5) without forming the lens forming region (2) shown in FIG. The third thermoplastic resin layer (3) was laminated, and the hinge sheet was projected from the information unit (1) to form a hinge portion (3f), and a comparative level (B1) was produced.

In the peeling evaluation using tweezers, in the laminated body (A2) and the laminated body (A3), the trace of the mesh of the third thermoplastic resin layer (3) remains, and the lens forming region (2) is the lens (2a). It was confirmed that it was destroyed along the outer circumference of the lens. On the other hand, at the comparative level (B1), no trace of the mesh of the third thermoplastic resin layer (3) was left, and no trace of peeling was left. Since the structure of the lens forming region (2) is irreversibly destroyed in this way, the hinge portion (3) cannot be reused and a trace remains at the time of peeling. Therefore, the laminated body (A2, It was confirmed that A3) could be prevented from being removed from the booklet.

(Tension strength test)
Next, the laminates (A2, A3) of the first embodiment and the second embodiment are sandwiched between the pages (11) and the countersunk (12), and the sewing machine (“DDL-9000B-SH” manufactured by JUKI Corporation) is inserted. ), The hinge portion (3f) was sewn with the thread (13) to prepare a passport (A4).

Next, it was evaluated whether the tensile strength of the hinge portion (3f) in the passport (A4) of this embodiment could withstand the tensile test at 60 N defined in "ICAO Doc9303". The tensile strength was measured using a Tensilon universal tester (“RTC-1310A” manufactured by Orientec Co., Ltd.).

Specifically, as shown in FIG. 13, the laminated body (A2, A3) of the passport (A4) is left, and the laminated body (A2, A3) is bent along the line bound by the thread (13). , Each page (11) and back (12) were sandwiched between the clamps (14) of the Tensilon universal tester and pulled by the Tensilon universal tester.

Next, the hinge portion (3f) was pulled by the Tensilon universal tester until it was torn, and the maximum tear strength (unit: Newton (N)) of the hinge portion (3f) of the laminated body (A2, A3) was measured. The tensile strength is 275N at level 1 and 268N at level 2, and as shown in Table 1 below, it is confirmed that the tensile strength is sufficient for the tensile test at 60N specified in the passport standard (“ICAO Doc9303”). did it.

○：基準値（６０Ｎ）以上

◯: Standard value (60N) or more

A1, A2, A3 Laminated body A4 Passport B1 Comparison level 1 Information section 2 Lens forming region 3 Third thermoplastic resin layer 4 First thermoplastic resin layer 5 Second thermoplastic resin layer 6 Moare pattern 7 Press plate 8 Printing layer 9 pixels 10 latent image area 11 page 12 backing paper 13 thread 14 clamp 15 color moire pattern

Claims (4)

A mesh is formed in at least a part between the second thermoplastic resin layer laminated on the lower layer of the first thermoplastic resin layer having transparency, and the first thermoplastic resin layer and the second thermoplastic resin layer. A laminate having an information unit formed by at least laminating a third thermoplastic resin layer having a structure.
The first thermoplastic resin layer is a laminate characterized in that a lens forming region in which a plurality of lenses are regularly arranged is provided at least in a portion overlapping with the third thermoplastic resin layer. A printing layer is provided between the second thermoplastic resin layer and the third thermoplastic resin layer which overlaps with the lens forming region and / or between the lens forming region and the third thermoplastic resin layer. The laminated body according to claim 1, wherein the laminated body is characterized by the above. The laminate according to claim 1 or 2, wherein the lens forming region includes a latent image region formed by partially shifting the phase of the arrangement of the lenses in a predetermined direction. The laminate according to any one of claims 1 to 3, wherein the third thermoplastic resin layer has a hinge portion formed so as to project from the information portion.

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