KR102009895B1 - Security sheet including hinge and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a security sheet including a hinge and a manufacturing method thereof, comprising a pair of sheet members, and an inlay sheet disposed between the pair of sheet members. On one side surface of the inlay sheet is formed with a step, is received in a recess formed by the step, and is formed with a hinge sheet forming a part protruding from the sheet member. The hinge sheet can be firmly coupled when the security sheet is coupled to a booklet type product such as an electronic passport, and a problem of increased thickness and process steps due to the hinge sheet can be solved.

Description

Security sheet including hinge and manufacturing method

The present invention relates to a security sheet including a hinge, and more specifically, a hinge sheet for applying a security sheet to a booklet-like product, such as an ePassport, is applied, the thickness and processing steps due to the application of the hinge sheet It relates to a security sheet including a hinge that the problem of increase is solved and a manufacturing method thereof.

The ePassport is a reliable means of verifying identity issued in the country.The ePassport contains identity information such as the owner's name, photo, social security number and address.It can be used to prove personal identity not only in Korea but also abroad. Used.

Therefore, since the ePassport must be manufactured very difficult to forge, researches for increasing the ePassport's reliability by inserting various forgery prevention security elements into the ePassport have been continuously conducted.

Such security factors include holograms with complex and sophisticated designs, encrypted patterns, and encrypted patterns that are reproduced with a laser to verify authenticity, a unique number or pattern is recorded using a laser, and contrasted with a database. Laser marking to identify.

Despite the development of such diverse and complex security elements, there is a problem that the identity sheet is easily torn or replaced by another due to the structural limitation of the ePassport security sheet to which the security elements are applied. In order to prevent the forgery, the method of improving the durability and bonding strength of the identification information surface has recently emerged as a big issue.

Generally, a security sheet such as an identity information surface is formed by stacking a plurality of layers such as a layer in which an IC chip is inserted, a layer in which identity information of an owner is printed, a layer in which various security elements are applied, and a layer for protecting them. Each layer is made of a polymeric plastic material. Therefore, in order to couple such a security sheet to a product in the form of a booklet such as an ePassport, a hinge sheet is applied, partly coupled to the security sheet and partly protruding.

However, as shown in FIG. 1, the conventional hinge sheet 13 is formed to overlap with a part of the sheet member 11 constituting the security sheet 10, and if the thermocompression bonding is performed to join each sheet, By the difference in shrinkage between the sheet member 11 formed of a polymer plastic material and the hinge sheet 13 formed in the form of a fabric, the step 15 is formed as much as the thickness of the hinge sheet 13, and the hinge sheet 13 is formed. A problem arises that is easily separated from the security seat (10).

Thus, in Patent No. 10-1124765, as shown in FIG. 2, the hinge sheet 23 of the security sheet 20 is partially overlapped with the sheet member 21, and the remaining security sheet 20 is formed. Although the filler sheet 25 overlapping with the portion of the filler sheet 25 is arranged side by side with the hinge sheet 23 to prevent the generation of steps, the problem remains that the hinge sheet 23 is easily separated from the security sheet 20. .

In addition, the insertion of the hinge sheet 23 and the filler sheet 25 thickens the security sheet 20, and there is a problem of an increase in cost and an increase in process steps due to the application of the additional filler sheet 25. There is an increasing demand for new hinge sheet application techniques that can solve problems.

Registered Patent No. 10-1124765 (Registered Feb. 29, 2012)

In the present invention, when coupled to a book-like product such as ePassport through a hinge sheet, the bonding force is improved, the security sheet containing a hinge that can solve the problem of increased thickness and process steps due to the application of the hinge sheet And to provide a method of manufacturing the same.

One embodiment of the present invention for achieving the above object, includes a pair of sheet members; and the inlay sheet disposed between the pair of sheet members, wherein one side of the inlay sheet And a hinge sheet which is formed in a recess formed by the step and partially protrudes from the sheet member.

The inlay sheet may be formed by stacking at least two inlay layers.

The step may be formed over any one or two or more layers of at least two inlay layers.

The thickness of the inlay sheet may be about 250 to 600㎛, the thickness of the hinge sheet may be about 50 to 150㎛.

The pair of sheet members and the inlay sheet may include a polymer material.

The inlay sheet may include an electronic chip and an antenna.

On the other hand, another embodiment of the present invention, the step forming step of forming a step on one side of the inlay sheet including the electronic chip and the antenna; A hinge sheet placing step of placing a hinge sheet in a recess formed by the step; A laminated body forming step of disposing an inlay sheet having a hinge sheet disposed at the step between a pair of sheet members; And a thermocompression bonding step of bonding the laminate obtained through the laminate forming step by thermocompression bonding.

At this time, in the hinge sheet arrangement step, at least a part of the hinge sheet is formed to protrude outward of the sheet member.

The inlay sheet may be formed by stacking at least two inlay layers.

The step forming step may be a step of stacking each inlay layer after removing at least one side of any one or more layers of at least two or more inlay layers.

Security sheet including the hinge of the present invention and the security sheet obtained through the manufacturing method thereof is coupled through the hinge sheet when combined with a book-like product such as e-passport, thereby improving the bonding force to prevent peeling, It has a flat appearance and can solve the problem of increased thickness and process steps due to the hinge sheet application.

1 and 2 are perspective views schematically showing a conventional security seat, respectively.
3 is a cross-sectional view of the security seat according to an embodiment of the present invention.
4 is a cross-sectional view of a conventional security seat.
5 to 9 are cross-sectional views showing an exemplary arrangement of the inlay sheet and the hinge sheet included in the security sheet according to an embodiment of the present invention.
10 to 12 are photographs taken in cross section of the security sheet of Example, Comparative Example 1, and Comparative Example 2, respectively.

Prior to the following description in detail through the preferred embodiment of the present invention, terms or words used in the present specification and claims should not be construed as limited to the conventional or dictionary meanings, meanings corresponding to the technical spirit of the present invention To be interpreted as

Throughout this specification, when a member is located "above" another member, this includes not only when one member is in contact with another member but also when another member exists between the two members.

Throughout this specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless otherwise stated.

Terms such as "first" and "second" are intended to distinguish one component from another component, and the scope of rights should not be limited by these terms. For example, the first component may be named a second component, and similarly, the second component may also be named a first component.

The present invention relates to a security sheet 100, the security sheet 100, information that requires security such as identity information, or a security element such as hologram, laser marking, etc. is applied, book-shaped product It can be used in combination with. The security sheet 100 may be, for example, an identity information surface used for an electronic passport.

3 is a cross-sectional view of the security seat 100 according to an embodiment of the present invention, referring to Figure 3, the security seat 100 according to an embodiment of the present invention is a pair of sheet members And an inlay sheet 130 disposed between the 110 and 120 and the pair of sheet members 110 and 120.

The inlay sheet 130 includes a step A formed on one side of the inlay sheet 130, and the hinge sheet 140 is accommodated in the recess B formed by the step A, thereby securing security. A flat shape may be maintained without forming a separate boundary line or step due to the application of the hinge sheet 140 to the surface of the sheet 100.

Step (A) refers to the height difference between the inlay layer formed by removing at least one side of any one or more of the inlay layer of the plurality of inlay layers included in the inlay sheet 130, and laminated with the remaining inlay layers, The recess B means the empty space formed by the step A. As shown in FIG.

This will be clearly understood with reference to the enlarged view shown in FIG. 3, in which the hinge sheet 140 is omitted for convenience of understanding.

Since the hinge sheet 140 applied to the security sheet 100 is accommodated in the recess B formed by the step A of the inlay sheet 130, durability of the security sheet 100 may be improved. In addition, since there is no need to provide a separate filling sheet for eliminating the step difference or boundary line of the surface, there is an advantage that the overall thickness of the security sheet 100 does not increase.

4 illustrates a cross-sectional view of a conventional security seat 200 having such a problem, and the conventional security seat 200 includes a pair of sheet members 210 and 220 and an inlay sheet disposed therebetween. 230, hinge sheet 240 and filling sheet 260 disposed side by side between inlay sheet 230 and one sheet member 210.

The filling sheet 260 is inserted to solve the boundary line and step problem of the surface of the security sheet 100 that appears when only the hinge sheet 240 is applied, and is formed to have the same or similar thickness as the hinge sheet 240. It is disposed so as to be located on the same plane as the hinge sheet 240.

Therefore, the problem of forming the boundary line and the step of the surface may be solved. However, since the filling sheet 260 is further laminated, the overall thickness of the security sheet 200 is increased, and the process step of laminating the filling sheet 260 is performed. There is a disadvantage of being added.

In order to solve this problem, the security seat 100 of the present invention includes a step A formed on one side of the inlay sheet 130 as described above, and a recess formed by the step A. Since the hinge sheet 140 is disposed in B), not only a boundary line or a step is generated on the surface of the security sheet 100, but also the overall thickness of the security sheet 100 can be reduced as compared with the conventional process step. There is an advantage that can be simplified.

Referring back to FIG. 3, when the hinge sheet 140 is accommodated in the recess B formed by the step A of the inlay sheet 130, a part of the hinge sheet 140 may be accommodated in the sheet member 110. , 120 is accommodated so as to protrude from, when manufacturing the product in the form of a booklet using the security sheet 100 of the present invention, by sewing or bonding through this protruding region, the security sheet 100 and other sheets are combined booklet You can configure the product in the form.

The hinge sheet 140 may have a thickness of about 50 to 150 μm, and since the thickness of the hinge sheet 140 is smaller than about 250 to 600 μm, which is the thickness of the inlay sheet 130 to be described later, the hinge sheet 140 ) At least one of two surfaces facing the pair of sheet members 110 and 120 may include the first sheet member 110 or the second sheet member (that constitutes the pair of sheet members 110 and 120). It is positioned inside the inlay sheet 130 without contacting the 120.

The hinge sheet 140 may be formed of various materials such as paper, fabric, polymer resin, or two or more thereof, and the material of the hinge sheet 140 may be appropriately selected according to the type of product and the working conditions. Can be.

The pair of sheet members 110 and 120 may be stacked with the inlay sheet 130 interposed therebetween, and the first sheet member 110 and the inlay sheet 130 stacked on one surface of the inlay sheet 130 may be stacked. The second sheet member 120 is laminated on the other surface.

The first sheet member 110 and the second sheet member 120 include cover layers 111 and 121, photosensitive layers 113 and 123, and printed layers 115 and 125, respectively, preferably for security purposes. The cover layers 111 and 121, the photosensitive layers 113 and 123, and the print layers 115 and 125 may be sequentially stacked on the surface of the sheet 100 in the inlay sheet 130 direction.

The cover layers 111 and 121 are disposed on the outermost side of the security sheet 100 in order to prevent damage to security elements, printing information, and electronic chips included in the security sheet 100, and a polymer material. It may be formed to include.

The polymer material which may be used herein may be, for example, a thermoplastic polymer, but may be polycarbonate, polyvinyl chloride, polycarbonate alloy, or the like, but is not limited thereto. However, preferably, it is preferably made of a polycarbonate material excellent in durability and transparency.

The thickness of the cover layers (111, 121) may be about 50 to 100㎛, if formed in the above range can be secured appropriate durability, if outside the range it is difficult to secure sufficient durability, or the security sheet ( Since the thickness of 100) is thicker than necessary, which may cause inconvenience to the user in the manufacturing process or the use process, the thickness is preferably manufactured within the above-described thickness range.

Since the photosensitive layers 113 and 123 are made of a polycarbonate material containing a photosensitive material, letters, numerals, patterns, photographs, and the like are applied to the photosensitive layers 113 and 123 by irradiating the laser light thereto during the laser marking process. Can be imprinted. Therefore, forgery becomes difficult, and as a result, security and reliability of the security seat 100 can be improved.

Quinone diazide compounds, allyl diazonium salts, diallyl iodonium salts, triallylsulfonium salts, o-nitrobenzyl esters, p-nitrobenzyl esters, trihalomethyl group-substituted s-triazine derivatives, and imide sulfo Nate derivatives and mixtures of at least two of them mixed may be used, but are not limited thereto.

The preferred thickness of the photosensitive layers 113 and 123 may be about 50 to 100 μm, and when the photosensitive layers 113 and 123 are formed to have a thickness within this range, the accuracy and reliability of the laser marking process is maintained, and the security Since the practical use of the sheet | seat 100 is possible, it is preferable to have the thickness range mentioned above.

The print layers 115 and 125 are fluorescent materials and / or reactants in which user information or information requiring security is printed or displayed in a specific form by UV (ultraviolet), IR (infrared), visible light, X-ray, or the like. As a layer on which a security element such as is printed, it may be a layer having a thickness of 100 to 250 μm.

In this case, the information, printing material, and printing form that can be printed on the print layers 115 and 125 are not limited to the above-described types.

The print layers 115 and 125 may be made of the aforementioned polymer material, and preferably, may be formed of a polycarbonate material. In this case, the printing layers 115 and 125 may include fillers to improve mechanical properties and heat resistance of the printing layers 115 and 125 and form an opaque appearance.

As the filler, organic / inorganic fillers having various particle forms may be used. For example, calcium carbonate, mica, talc or kaolin may be used, but is not limited thereto. Most preferably, calcium carbonate may be used. have.

On the other hand, the inlay sheet 130 may be inserted into the electronic chip 150 that can store a variety of data, the coil type antenna for transmitting the data stored in the electronic chip 150 by wireless (not shown) May be further provided.

The electronic chip 150 and the antenna (not shown) may be embedded in the inlay sheet 130 or may be formed on the surface of the inlay sheet 130.

The inlay sheet 130 is formed by stacking at least two or more inlay layers. Hereinafter, the inlay sheet 130 will be described according to an embodiment of the present invention in which three inlay layers are stacked. However, this will be described based on an embodiment of the present invention for convenience of description, it will be clearly understood by those skilled in the art that the inlay layer is not necessarily composed of three layers.

The inlay sheet 130 is formed by laminating three sheets, and more specifically, the first inlay layer 131, the second inlay layer 133, and the third inlay layer 135 are laminated and formed. It may have a thickness of 250 to 600㎛.

The step A of the inlay sheet 130 in which the hinge sheet 140 is accommodated above is any one or more of the first inlay layer 131, the second inlay layer 133, and the third inlay layer 135. It can be formed by removing at least one side and then laminating each layer.

5 to 8 are cross-sectional views showing an exemplary arrangement of the inlay sheet and the hinge sheet included in the security sheet according to an embodiment of the present invention, in which the markings of step A and recess B are shown. Although omitted, referring to the enlarged view of FIG. 3, the meaning of the step A and the recess B may be clearly understood.

Specifically, FIG. 5 illustrates that the hinge sheet 140 is accommodated in the recess B formed by the step A of the first inlay layer 131, and FIG. 6 illustrates the second inlay layer 133. 7 is a view showing that the hinge sheet 140 is accommodated in the recess B formed by the step A of the third inlay layer 135.

In this case, the position of the inlay layer where the step A is formed is not limited thereto, and is formed over two or more layers of the first inlay layer 131, the second inlay layer 133, and the third inlay layer 135. May be

FIG. 8 illustrates an example of such a case, in which a step A is formed over the first inlay layer 131 and the second inlay layer 133, and a recess formed by the step A is formed. It is shown that the hinge sheet 140 can be accommodated in B).

As described above, when the step A is formed over two or more layers, at least one of two surfaces of the hinge sheet 140 facing or contacting the pair of sheet members 110 and 120 may be a first sheet member ( It is preferable that the step A is formed so as not to contact the 110 or the second sheet member 120. When the step A is formed as described above, since the bonding force of the hinge sheet 140 with the inlay sheet 130 is improved, the problem of peeling the hinge sheet 140 may be improved.

FIG. 9 illustrates another example of the present invention, and a step A may be formed over the entire inlay layers 131, 133, and 135 as shown in FIG. 9.

Each of the first inlay layer 131 and the second inlay layer 133 may be formed to have a thickness of about 100 to 250 μm, and may be made of the above-mentioned polymer material. Can be. At this time, it may include an organic / inorganic filler for improving the mechanical properties and to form an opaque appearance.

Calcium carbonate, mica, talc or kaolin may be used as the filler, but is not limited thereto. Most preferably, calcium carbonate may be used.

On the other hand, the third inlay layer 135 may be formed to a thickness of about 50 to 100㎛, unlike other inlay layers are made of the above-described polymer material, but because the filler is not included to form an opaque appearance is transparent Has an appearance.

On the other hand, another embodiment of the present invention relates to a manufacturing method of the security sheet 100, step forming step of forming a step (A) on one side of the inlay sheet 130, the electronic chip is inserted; A hinge sheet disposing step of placing the hinge sheet 140 in the recess B formed by the step A; A laminated body forming step of disposing an inlay sheet 130 having a hinge sheet 140 disposed at the step A between a pair of sheet members 110 and 120; And a thermocompression bonding step of bonding the laminate obtained through the laminate formation step by thermocompression bonding.

The inlay sheet 130 is formed by stacking at least two inlay layers, and may have a total thickness of 250 to 600 μm.

As mentioned earlier in the embodiment of the present invention, the inlay sheet 130 is formed by laminating at least two or more inlay layers, but hereinafter, three inlay layers will be described according to one embodiment of the present invention. . However, this will be described based on an embodiment of the present invention for convenience of description, it will be clearly understood by those skilled in the art that the inlay layer is not necessarily composed of three layers.

Hereinafter, the first sheet member 110, the second sheet member 120, the inlay sheet 130, the first inlay layer 131, the second inlay layer 133, the third inlay layer 135 and the hinge sheet. Material constituting the 140, their thickness range, configuration, function and characteristics are the same as described above in the embodiment of the present invention and will be omitted.

The step forming step, after removing at least one side of any one or more of the first inlay layer 131, the second inlay layer 133 and the third inlay layer 135, the first inlay layer 131 The second inlay layer 133 and the third inlay layer 135 are stacked.

For example, when one side of the first inlay layer 131 is removed and the first inlay layer 131, the second inlay layer 133, and the third inlay layer 135 are stacked, an inlay as illustrated in FIG. 5. When the sheet 130 may be formed and one side of the second inlay layer 133 or the third inlay layer 135 is removed and laminated, the inlay sheet 130 as shown in FIG. 6 or 7, respectively. ) May be formed.

When one side of the inlay layer is removed, the inlay sheet shown in FIG. 8 may be formed, and one side of the entire inlay layers 131, 133, and 135 may be removed and stacked as shown in FIG. 9. Inlay sheet 130 may be formed.

The hinge sheet disposing step is to arrange the hinge sheet 140 in the recess B by the step A formed through the step forming step, and a part of the hinge sheet 140 is the recess B. Disposed within, and the remaining portions protrude outward of the sheet members 110, 120.

Therefore, the hinge sheet 140 can be firmly coupled in the security sheet 100 by a part of the hinge sheet 140 disposed in the recess B, and the rest formed protruding from the sheet members 110 and 120. Some may be sewn or glued with other sheets in the manufacture of booklet products.

The laminate forming step may include a pair of sheet members 110 and 120 for the inlay sheet 130 obtained through the hinge sheet arrangement step, that is, the inlay sheet 130 having the hinge sheet 140 disposed on the step A. FIG. ) Is placed between.

Between the hinge sheet arrangement step and the laminate formation step, a preliminary thermocompression step of thermocompressing the inlay sheet 130 into which the hinge sheet 140 is inserted into the step A may be further performed. By passing through the thermocompression step, the hinge sheet 140 and the inlay sheet 130 may be more firmly coupled, and the handling of the inlay sheet 130 into which the hinge sheet 140 is inserted may be facilitated.

On the other hand, the thermocompression step performed after the laminate formation step imparts plasticity to the polymer material, which is a thermoplastic plastic constituting each layer of the laminate by applying heat and / or pressure to the laminate obtained in the above laminate step, thereby providing each layer. And firmly bonding the sheets.

Since each layer is bonded through the thermocompression as described above, a separate adhesive is not required, and thus problems such as irregularities and increase in thickness due to the use of the adhesive do not occur.

[ Example ]

A step was formed in the inlay sheet by preparing a first inlay layer, a second inlay layer, and a third inlay layer having the same width and width, removing one end of the first inlay layer, and stacking each inlay layer.

After the hinge sheet was disposed on the step, and thermally compressed, the printing layer, the photosensitive layer, and the cover layer were sequentially laminated on both sides, and thermally compressed again to prepare an integrated security sheet.

The first inlay layer and the cover layer used herein are transparent polycarbonate sheets having a thickness of 50 μm and 100 μm, respectively, and the second inlay layer, the third inlay layer and the print layer have a thickness of 100 μm, 170 μm, and 100 μm, respectively. An opaque polycarbonate sheet, the photosensitive layer is a polycarbonate sheet having a thickness of 50㎛ containing a photosensitive material, the total thickness of the security sheet was made of 820㎛.

Then, the cross section of the prepared security sheet is shown in Figure 10.

As a result of observing the surface of the manufactured security sheet, when the hinge sheet was inserted into the step of the inlay sheet, it was confirmed that no step was formed on the surface.

In addition, referring to the cross-sectional photograph shown in FIG. 10, it can be seen that both surfaces of the security sheet are formed flat.

[ Comparative example  One]

The same sheets as the sheets used to manufacture the security sheet of the above embodiment were prepared except that each sheet was arranged such that the hinge sheet partially covered the inlay sheet as shown in FIG. 1 without forming any step in the inlay sheet. By using the same method, a security sheet of Comparative Example 1 was prepared.

A cross section of the security sheet of Comparative Example 1 prepared as described above is illustrated in FIG. 11. Referring to Figure 11, it can be seen that the step is formed on the surface of the security sheet of Comparative Example 1.

In addition, as a result of observing the surface of the security sheet of Comparative Example 1, it was confirmed that a bent portion (step) exists on the surface of the security sheet, and this step is due to the inlay layer due to the hinge sheet during thermocompression bonding. It is judged to occur because the sheet member is pushed into the empty space formed between the sheet members.

[ Comparative example  2]

Prepared in the same manner as the security sheet of Comparative Example 1, but was prepared by placing the filler sheet in the empty space between the hinge sheet and the inlay layer formed by inserting the hinge sheet as shown in FIG.

In this case, the filler sheet used was a transparent polycarbonate sheet having a thickness of 100 μm, and a cover layer having a thickness of 50 μm was used to form the thickness of the security sheet as in Example and Comparative Example 1, respectively.

A cross-sectional photograph of a security sheet manufactured using the manufacturing method is shown in FIG. 12.

It was confirmed that the pressing marks are generated on the surface of the security sheet manufactured as described above, and the sheet member is pushed in the empty space during the thermocompression process due to the minute gap between the hinge sheet and the filler sheet. It is judged that it was formed because it entered.

This pressing mark was confirmed when the security sheet surface was visually observed, and also in the area indicated by the circle in FIG. 12.

When the step or press marks are generated on the surface as in Comparative Example 1 and Comparative Example 2, the security element formed in the portion is distorted, making it difficult to determine the authenticity of the security element, and the possibility of peeling of the hinge sheet increases. However, there is a problem of being easily damaged along the stepped or pressed marks on the surface.

On the other hand, since the security sheet of the embodiment according to the embodiment of the present invention does not have any step or press marks on the surface, the possibility of such a problem is significantly lowered, and as a result, the reliability of the security sheet can be improved. .

The present invention is not limited to the above specific embodiments and descriptions, and various modifications can be made by those skilled in the art without departing from the gist of the invention as claimed in the claims. Such variations are within the protection scope of the present invention.

Claims (10)

And a pair of sheet members; and an inlay sheet having a thickness of 250 to 600 μm disposed between the pair of sheet members and into which the electronic chip is inserted.
One side of the inlay sheet is removed to form a step of 50 to 150 μm, the hinge sheet being accommodated in a recess of the inlay sheet formed by the step, the part protruding to an outer side of the sheet member, ,
The pair of sheet members include a cover layer, a photosensitive layer and a printed layer,
The pair of sheet members and the inlay sheet are made of a thermoplastic polymer of polycarbonate, polyvinylchloride or polycarbonate alloy, the hinge sheet comprises paper, fabric, polymer resin or two or more thereof,
A security seat, characterized in that a separate filling sheet is not formed between one sheet member and the inlay sheet. The method of claim 1,
The inlay sheet is a security sheet, characterized in that formed by laminating at least two or more inlay layers. The method of claim 2,
The step is characterized in that the security sheet is formed over any one layer or two or more layers of two or more inlay layers. delete delete delete delete A step forming step of removing one side of the 250 to 600 μm thick inlay sheet into which the electronic chip is inserted to form a step of 50 to 150 μm;
A hinge sheet arrangement step of placing a hinge sheet in a recess of the inlay sheet formed by the step;
A laminated body forming step of disposing an inlay sheet having a hinge sheet disposed at the step between a pair of sheet members; And
And a thermocompression bonding step of bonding the laminate obtained through the laminate formation step by thermocompression bonding.
In the hinge sheet arrangement step, at least a portion of the hinge sheet is formed to protrude to the outer side of the sheet member,
The pair of sheet members include a cover layer, a photosensitive layer and a printed layer,
The pair of sheet members and the inlay sheet are made of a thermoplastic polymer of polycarbonate, polyvinylchloride or polycarbonate alloy, the hinge sheet comprises paper, fabric, polymer resin or two or more thereof,
A separate filling sheet is not formed between one sheet member and the inlay sheet. The method of claim 8,
The inlay sheet is a method for producing a security sheet, characterized in that at least two or more inlay layer is formed by stacking. The method of claim 9,
The step forming step, after removing at least one side of any one or more layers of at least two or more inlay layers, laminating each inlay layer, the manufacturing method of the security sheet.

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