JP2017193183A - Production method of optical diffraction layer lamination sheet and card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a production method of an optical diffraction layer lamination sheet and card by which a card having an optical diffraction structure can be easily produced.SOLUTION: A hologram lamination sheet material 20A which forms a part of a lamination structure of a card 1 by being laminated on card base material 10, includes: a hologram layer 22; a transparent sheet layer 30 having a shape larger than a shape of the hologram layer 22, and being laminated on an upper side that is one surface side of the hologram layer 22; and a laser coloring layer 15 having a shape larger than a shape of the hologram layer 22, and being laminated on a lower side that is the other surface side of the hologram layer 22.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for producing a light diffraction layer laminate sheet and a card.

Conventionally, there has been a card that incorporates an optical analysis structure such as a hologram (for example, Patent Document 1).
However, the conventional optical analysis structure has a high technical level for manufacturing, and the number of manufacturers is limited. Further, when the optical analysis structure is a Lippmann hologram, the technical level for manufacturing is higher and the number of manufacturers is further limited.

JP 2002-32724 A

  The subject of this invention is providing the manufacturing method of the optical diffraction layer laminated body sheet | seat which can manufacture the card | curd which has an optical analysis structure easily, and a card | curd.

  The present invention solves the problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this. In addition, the configuration described with reference numerals may be improved as appropriate, or at least a part thereof may be replaced with another configuration.

-1st invention is the optical diffraction layer laminated sheet which forms a part of laminated structure of a card | curd by being laminated | stacked on a card | curd base material, Comprising: An optical diffraction layer (22) and the said optical diffraction layer A transparent sheet layer (30, 30A, 330) laminated on the upper side which is one surface side of the optical diffraction layer, and an external shape larger than the external shape of the optical diffraction layer. And a laser coloring layer (15, 15A) laminated on the lower side which is the other surface side of the optical diffraction layer.
-2nd invention is an optical diffraction layer laminated sheet of 1st invention, It is provided in the upper side or the lower side of the said transparent sheet layer (30, 30A), The optical diffraction image of the said optical diffraction layer (22) is obtained. A printing layer (31) having a light diffraction image observation window portion (31g) to be observed and a laser beam passage window portion (31h) for allowing the laser beam to pass through the laser coloring layer (15, 15A). An optical diffraction layer laminate sheet.
-3rd invention is a light diffraction layer laminated sheet of 2nd invention, This light diffraction layer laminated sheet (20A, 220A) is laminated | stacked on the upper side of a card | curd base material (10, 10A). Yes, the color of the edge of the light diffraction image observation window (31g) and the color of the edge of the laser light passage window (31h) are the same as or substantially the same as the color of the card substrate, The color layer by laser printing of the laser coloring layer (15, 15A) is a light diffraction layer laminate sheet characterized by being different from the color of the card substrate.
-4th invention is a light diffraction layer laminated body sheet | seat of 3rd invention, The color of the edge part of the said optical diffraction image observation window part (31g), and the edge part of the said laser beam passage window part (31h) At least one of them is a light diffraction layer laminate sheet characterized by including a transition portion (31c) in which light and shade become thin as it reaches the inside of a window.

-The fifth invention is the light diffraction layer laminate sheet of any one of the first to fourth inventions, the interlayer between the transparent sheet layer (30, 30A, 330) and the light diffraction layer (22), and A light diffraction layer stack comprising a first thermal adhesive layer (21, 23, 221) for bonding at least one layer between the laser coloring layer (15, 15A) and the light diffraction layer It is a body sheet.
-6th invention WHEREIN: In the optical diffraction layer laminated sheet of 5th invention, between said transparent sheet layer (30,30A, 330) and said optical diffraction layer (22), said laser coloring layer (15,15A) And a second thermal adhesive layer (23 or 21 and 221) for adhering an interlayer different from the first thermal adhesive layer (21 and 221 or 23) among the optical diffraction layers. It is a diffraction layer laminated sheet.
-7th invention is the optical diffraction layer laminated sheet of 6th invention, The adhesion temperature difference of the said 1st thermal-adhesion layer and the said 2nd thermal-adhesion layer is one of the (21,221) thermal-adhesion layers. The optical diffraction layer laminate sheet is characterized in that the other (23) thermal adhesive layer is large enough not to exhibit adhesiveness during bonding.
-8th invention is the optical diffraction layer laminated sheet of 6th or 7th invention, One (21) of the said 1st heat contact bonding layer and the said 2nd heat contact bonding layer is a thermoplastic resin sheet. The other of the first thermal adhesive layer and the second thermal adhesive layer (23) is a thermoplastic adhesive, and is a light diffraction layer laminate sheet.
The ninth invention is the optical diffraction layer laminate sheet of the sixth or seventh invention, wherein the first thermal adhesive layer (23 or 221) and the second thermal adhesive layer (221 or 23) are thermoplastic. A protective sheet provided between the light diffraction layer (22) and the first thermal adhesive layer and between the optical diffraction layer and the second thermal adhesive layer. (222) It is an optical diffraction layer laminated sheet characterized by including.

The tenth invention is a card manufacturing method using the light diffraction layer laminate sheet of any one of the first to ninth inventions, and is provided below the light diffraction layer laminate sheet (20A, 220A). A card manufacturing method comprising: a step of laminating a card substrate (10, 10A); and a printing step of passing a laser beam through the laser coloring layer (15, 15A) for printing.

  ADVANTAGE OF THE INVENTION According to this invention, the optical diffraction layer laminated body sheet | seat which can manufacture the card | curd which has an optical analysis structure easily, and the manufacturing method of a card | curd can be provided.

It is the top view and sectional drawing of the card | curd 1 of 1st Embodiment. It is sectional drawing of the base material sheet material 10A, hologram lamination sheet material 20A, and transparent sheet material 30A of 1st Embodiment. It is a top view of base material sheet material 10A, hologram holding sheet material 25A, and hologram lamination sheet material 20A of a 1st embodiment. It is a figure explaining the manufacturing method of the card | curd of 2nd Embodiment, and is sectional drawing of the base material sheet material 10A and the hologram lamination sheet material 220A (figure equivalent to FIG. 2). It is the top view and sectional drawing of the card | curd 301 of 3rd Embodiment. It is a figure explaining the manufacturing method of the card | curd of 4th Embodiment, and is sectional drawing of the base material sheet material 10A and the hologram lamination sheet material 420A (the figure equivalent to FIG. 2).

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a plan view and a cross-sectional view of a card 1 according to the first embodiment.
FIG. 1A is a plan view of the card 1 (a view of the card surface 1a viewed from the normal direction).
FIG. 1B is a cross-sectional view of the card 1 (a cross-sectional view taken along the line bb in FIG. 1).
In the embodiment, for convenience, the horizontal direction X, the vertical direction Y, and the vertical direction Z (thickness direction) of the card 1 will be described based on the state shown in FIG. It can be determined appropriately according to For example, in the vertical direction Z of the card 1, when the front and back of the card 1 are arranged opposite to the state of FIG. 1, the lower Z1 (lower surface side) of FIG. The upper surface side is the lower side. In the drawing, the configuration in the vertical direction Z is exaggerated for the sake of clarity.

The card 1 is used for a bank cash card, for example.
The card 1 includes a card substrate 10, a lower printing layer 12, a laser coloring layer 15, a hologram laminate 20, a transparent sheet layer 30, a magnetic stripe 30a, and an upper printing layer 31. The laser coloring layer 15, the hologram laminate 20, the transparent sheet layer 30, and the upper printing layer 31 are laminated in this order from the lower side Z1 on the upper side Z2 (one surface side) of the card substrate 10.
The card substrate 10, the laser coloring layer 15, and the transparent sheet layer 30 have the same outer shape.
The card substrate 10 is a member that becomes the base of the card 1. The card substrate 10 is formed of a resin sheet material such as PET, PET-G, PVC, or PC. The outer shape of the card substrate 10 is the same as the outer shape of the card 1.
The color of the upper surface of the card substrate 10 is black. This black color may be the color of the card base material 10 itself, or a black base material printed on a base material other than black.

A lower printing layer 12 is provided on the lower surface of the card substrate 10.
The lower print layer 12 is printed with, for example, notes on card use.

The laser coloring layer 15 is a transparent layer and is a resin layer that develops color when irradiated with laser light. In the embodiment, the color is generated in a color (for example, gray) different from black which is the color of the card substrate 10. Note that when a card substrate 10 having a color other than black (for example, white) is used, the laser coloring layer 15 may be colored black.
The laser coloring layer 15 includes a laser printing 15a.
The laser print 15a is a character printed by being irradiated with laser light. When the card 1 is a bank cash card, the laser printing 15a prints an account number or the like. The laser printing 15a is not limited to printing, and may print figures, patterns, and the like.

The hologram laminate 20 includes a PC layer 21 (first thermal adhesive layer or second thermal adhesive layer), a hologram layer 22 (light diffraction layer), and an HS (heat seal) layer 23 (second thermal adhesive layer or first thermal adhesive layer). Layer) are laminated in order from the lower side Z1.
The PC layer 21 is an adhesive layer that adheres between the laser coloring layer 15 and the hologram layer 22. The PC layer 21 is laminated on the lower surface of the hologram layer 22. The outer shape of the PC layer 21 is the same as the outer shape of the hologram layer 22. The PC layer 21 is a thermoplastic resin sheet. In the embodiment, PC (polycarbonate) is used. However, the type of resin is not limited to PC, and for example, PET or the like may be used.
Since the laser coloring layer 15 and the hologram layer 22 are bonded to each other by the PC layer 21, the hologram layer 22 is destroyed when it is going to be peeled off. Thereby, even if the hologram layer 22 is illegally peeled, the observer can easily grasp the peeling, and the card 1 can improve the security.

The hologram layer 22 is a light diffraction layer for preventing forgery of the card 1. The hologram layer 22 is a layer having a Lippmann type hologram. The hologram layer 22 has translucency. In the hologram layer 22, a hologram image 22a of a building is recorded.
The Lippmann-type hologram layer 22 is formed by applying a special polymer layer on a film (not shown) such as a PET substrate and forming interference fringes due to a change in refractive index in the polymer layer. The hologram layer 22 reproduces a hologram image by a diffraction phenomenon when light is incident on the interference fringes. The hologram layer 22 is excellent in the expression of a three-dimensional effect and a sense of depth in the vertical and horizontal directions, and a three-dimensional effect closer to a real object can be obtained. The hologram layer 22 is extremely difficult to forge because of the special material and manufacturing process used, and has a higher falsification suppressing effect than, for example, an embossed hologram.

  The outer shape of the hologram layer 22 is smaller than the outer shape of the card 1, that is, the outer shape of the card substrate 10, the laser coloring layer 15, and the transparent sheet layer 30. This is to reduce the cost by reducing the expensive hologram layer 22.

The HS layer 23 is a layer that bonds the hologram layer 22 and the transparent sheet layer 30 together. The HS layer 23 is laminated on the upper surface of the hologram layer 22.
The HS layer 23 is formed of a thermoplastic adhesive (polyester resin or the like). Since the hologram layer 22 and the transparent sheet layer 30 are bonded by the HS layer 23, the hologram layer 22 is destroyed when it is going to be peeled off. Thereby, even if the hologram layer 22 is illegally peeled, the observer can easily grasp the peeling, and the card 1 can improve the security.
The PC layer 21 has a higher adhesive temperature than the HS layer 23.

  The transparent sheet layer 30 is formed of a resin sheet material such as PET, PET-G, PVC, or PC. The upper surface of the transparent sheet layer 30 may have a mirror shape or a mat shape.

The magnetic stripe 30 a is provided on the upper surface of the transparent sheet layer 30. Information relating to bank account numbers and the like is recorded in the magnetic stripe 30a. This information can be read using a reader (not shown).
As shown in FIG. 1A, the magnetic stripe 30a is disposed in a region outside the transition portion 31c (described later) of the upper printing layer 31.

The upper print layer 31 is a layer printed with a black background color similar to that of the card substrate 10.
The upper print layer 31 is printed with characters 31a indicating a bank name, a graphic 31b, and other necessary information (not shown).
The upper printing layer 31 includes a transition portion 31c, a hologram observation window portion 31g, and a laser beam passage window portion 31h.
The transition part 31 c is printed in black, which is the background color of the upper print layer 31. For this reason, the color of the transition part 31c is equivalent or substantially equivalent to the color of the card base material 10.
The transition portion 31c is a portion that is gradation-printed so that the shading becomes lighter toward the inside. The outer edge 31 d of the transition part 31 c is further inside than the edge 22 b of the hologram layer 22.
The density of the transition part 31c is gradually reduced from 100% of the outer edge part 31d to 0% of the inner edge part 31e. The density of the region 31 f outside the transition portion 31 c in the upper printed layer 31 is the same as or almost the same as that of the card substrate 10.

A portion inside the inner edge portion 31e of the transition portion 31c is a hologram observation window portion 31g.
In the hologram observation window portion 31g, the transparent transparent sheet layer 30 is completely exposed. For this reason, all the hologram images 22a of the hologram layer 22 are visible from the hologram observation window portion 31g.

The laser beam passage window portion 31h is a window portion for allowing the laser beam to pass through the laser coloring layer when the laser printing 15a is printed at the time of manufacture. The laser beam passage window 31h is a window for visually recognizing the printed laser print 15a when the card is used. The color of the edge of the laser beam passage window portion 31h is also the same as or almost the same as the color of the card substrate 10.
The laser beam passage window portion 31h may also be provided with a transition portion, similar to the hologram observation window portion 31g. Or you may provide a transition part in any one of the hologram observation window part 31g and the laser beam passage window part 31h.
Moreover, you may provide the upper printing layer 31 in the lower surface of the transparent sheet layer 30 as needed.

Next, how the card 1 is seen from the upper side Z2 will be described.
(Near edge 22b of hologram layer 22)
As described above, the density of the region 31 f outside the transition portion 31 c in the upper printed layer 31 is the same as or almost the same as that of the card substrate 10. For this reason, the edge 22b of the hologram layer 22 is blinded and concealed by the upper printing layer 31 (see arrow A). Furthermore, since the card base 10 and the upper print layer 31 are black-based that absorbs light, the edge 22b of the hologram layer 22 is hardly visible.

(Transition part 31c)
Only the color of the upper printing layer 31 is visually recognized at the outer edge 31d of the transition part 31c. Since the hologram layer 22 and the laser coloring layer 15 are transparent, the card substrate 10 can be visually recognized gradually from the outer edge 31d to the inner side. And only the color of the card | curd base material 10 comes to be visually recognized in the inner edge part 31e of the transition part 31c (refer arrow B). Furthermore, the upper printing layer 31 and the card substrate 10 are black of similar colors. For this reason, the upper printing layer 31 and the card | curd base material 10 are visually recognized integrally like the same member with no joint.

(Hologram observation window 31g)
Since the upper print layer 31 is not formed on the transparent sheet layer 30, the hologram image 22a can be confirmed inside the hologram observation window 31g. Since the hologram is a transparent hologram and the laser coloring layer 15 is transparent, the region other than the hologram image 22a in the hologram layer 22 (the region 22c outside the building, the portion 22e inside the building other than the line 22d, etc.) The color of the card substrate 10 is visually recognized. Further, as described above, the upper printing layer 31 and the card substrate 10 are visually recognized as a single piece without any joints.
For this reason, the periphery of the hologram image 22 a is observed so that the black back surface exists in a wider range than the hologram layer 22.
As a result, the hologram image 22a is observed more three-dimensionally with the hologram image 22a floating up against a black background.
Such visual effects have been confirmed by trial production.

(Outside of the transition part 31c)
Since the background color of the upper print layer 31 is printed in black on the outside of the transition part 31c, the inside of the card is concealed. For this reason, the figure 31b etc. printed on the upper printing layer 31 are observed. Further, the magnetic stripe 30a is concealed.
Since the characters 31a are printed so as to cross the hologram observation window 31g, the characters 31a can be visually recognized across the hologram observation window 31g, the transition 31c, and the transition 31c. In this case, the bank letter 31a is observed inside the hologram observation window 31g so as to overlap the hologram image 22a.

(Laser beam passage window portion 31h)
Since the upper printing layer 31 is not formed on the transparent sheet layer 30 in the laser beam passage window portion 31h, the laser printing 15a can be confirmed (see arrow D). Since the laser coloring layer 15 is transparent, a black color which is the color of the card substrate 10 can be confirmed in an area where the laser printing 15a is not performed (see arrow E). Further, the background color of the upper printing layer 31 is black. For this reason, the background of the laser printing 15a is observed in black as the card base material 10 and the upper printing layer 31 are integrated. Thereby, the card | curd 1 can improve a texture.
In addition, if the transition part is provided also in the laser beam passage window part 31h, the card | curd 1 will be visually recognized integrally without a joint like the hologram observation window part 31g, and a texture can be improved more.

Next, a method for manufacturing the card 1 will be described.
FIG. 2 is a cross-sectional view of the base sheet material 10A, the hologram laminated sheet material 20A, and the transparent sheet material 30A according to the first embodiment.
FIG. 3 is a plan view of the base sheet material 10A, the hologram laminated sheet material 20A, and the hologram holding sheet material 25A according to the first embodiment.
The base sheet material 10A, the hologram laminated sheet material 20A, and the hologram holding sheet material 25A are multi-faced sheet materials that are manufactured in a previous process before this process. The multi-page layout in FIG. 3 is an example in which the left and right rows are arranged in 5 rows.

First, the manufacturing method of each sheet material is manufactured. Note that the order of the following steps may be appropriately changed.
[Base Material Sheet Material 10A]
The following processing is performed on a black resin sheet or a sheet material (card base material 10) obtained by performing black printing on a resin sheet having a color other than black.
-Printing process of lower printing layer 12 Transfer foil provided on PET, for example, is transferred to the lower side Z1 of the sheet material.
Thus, the base sheet material 10A provided with the lower printing layer 12 is manufactured.

[Hologram Laminated Sheet Material 20A]
(Manufacture of hologram laminate 20 and hologram holding sheet material 25A)
(1) As shown in FIG. 2, the hologram layer 22 is manufactured, the PC layer 21 is laminated on the lower side Z1 of the hologram layer 22, and the HS layer 23 is laminated on the upper side Z2 of the hologram layer 22 The body 20 is manufactured.
(2) The hologram laminate 20 laminated in (1) above is laminated on the release sheet 20a in order to hold it until a later step (see FIG. 3B). Thereby, the hologram holding sheet material 25A (see FIG. 3B) in which the hologram laminate 20 is laminated on the upper side Z2 of the release sheet 20a is manufactured.

(Manufacture of transparent sheet material 30A)
(1) Magnetic stripe 30a
As shown in FIG. 2, the magnetic stripe 30a is laminated | stacked on the upper surface of a transparent sheet material (transparent sheet layer 30).
(2) Upper printing layer 31
For example, a transfer foil (upper printing layer 31) provided on PET is transferred onto the upper surface of the sheet material on which the magnetic stripes 30a are laminated in the above (1).
Thereby, the transparent sheet material 30A in which the magnetic stripe 30a and the upper print layer 31 are laminated is manufactured.

(Lamination of hologram laminate 20 and transparent sheet material 30A)
Using a robot or the like, the release sheet 20a is peeled from the hologram holding sheet material 25A, and the hologram laminate 20 is adsorbed.
As shown in FIG. 2, the transparent layer 30 </ b> A is heated and pressurized on the upper side Z <b> 2 of the hologram laminate 20 to develop the adhesiveness of the HS layer 23, and the hologram layer 22 and the transparent sheet are obtained by heat sealing. Adhere between the materials 30A. The set temperature of the heat seal is set to a temperature at which the adhesiveness of the HS layer 23 is exhibited but the adhesiveness of the PC layer 21 is not exhibited.
It has been confirmed by trial production that the destruction of the hologram due to the pressurization can be suppressed by providing the PC layer 21 on the lower side Z1 of the hologram layer 22.
Further, this step may be performed without peeling the release sheet 20a from the hologram laminated sheet material 20A.

(Lamination of the laminate (hologram laminate 20, transparent sheet material 30A) and laser color developing sheet material 15A)
The above laminate (hologram laminate 20 and laminate of the transparent sheet material 30A) and the transparent laser coloring sheet material 15A (laser coloring layer 15) are heated and pressurized and bonded and laminated by heat sealing. In this case, the portions where the laser color developing sheet material 15A and the transparent sheet layer 30 are in direct contact are bonded by thermal welding of these sheet layers (adhesives may be used as necessary).
On the other hand, the portion where the laser color developing sheet material 15A and the PC layer 21 are in contact is bonded mainly by the adhesion of the PC layer 21 by heat welding.
In this case, since the PC layer 21 is softened, the destruction of the hologram due to the pressurization can be suppressed. Thus, since the PC layer 23 is a thermoplastic resin sheet, it can be used as an adhesive layer and can be used to protect the hologram layer 22 from breakage due to pressure.

  As shown in FIGS. 3 (c-1) and 3 (c-2), the hologram laminate 20 is formed between the laser coloring sheet material 15 </ b> A (laser coloring layer 15) and the transparent sheet layer 30 through the above steps. The laminated hologram laminated sheet material 20A is manufactured.

[This process]
Next, in this step, the base sheet material 10A and the hologram laminated sheet material 20A are processed as follows.
(1) Lamination of the base sheet material 10A and the hologram laminate sheet material 20A As shown in FIG. 2, the base sheet material 10A and the hologram laminate sheet material 20A are heated and pressurized and bonded by heat sealing. Laminate. In this case, the card substrate 10 and the laser coloring layer 15 are bonded by thermal welding (adhesives may be used as necessary).

(2) Punching process The base material sheet material 10A and the hologram laminated sheet material 20A which are laminated and bonded are punched with a card outer shape and separated into individual pieces.

(3) Laser printing process (printing process)
Laser light is passed through the laser coloring layer 15 through the laser beam passage window portion 31h and laser-printed on the laser coloring layer 15 on the separated card 1 using a laser irradiation device.
In addition, you may perform a laser printing process in the multi-faced state before a punching process as needed.
Thus, the card 1 can be manufactured.
As described above, since the hologram laminated sheet material 20A is manufactured in advance in the previous process before this process, in this process, if the base sheet material 10A and the hologram laminated sheet material 20A are laminated, a card incorporating a Lippmann hologram is built. 1 can be manufactured easily.

The card manufacturing process may be performed entirely in one factory, but the previous process up to the manufacture of the hologram laminated sheet material 20A and the present process may be performed in different factories.
Here, the hologram layer 22 has advanced technology for manufacturing. For this reason, the hologram laminated sheet material 20A having the hologram layer 22 is manufactured in a factory having the technology, and the base sheet material 10A is manufactured in a factory different from the hologram laminated sheet material 20A, and is actually made into a card. The process can be shared so that this process is also performed in a factory different from the hologram laminated sheet material 20A.

If the process is shared in this way, the factory that performs this process does not have the technology to manufacture the Lippmann hologram, but the final card 1 can be manufactured as long as the hologram laminated sheet material 20A is available. That is, since the card manufacturing process includes a process of manufacturing the hologram laminated sheet material 20A, it is possible to easily manufacture a card having a Lippmann hologram. Thereby, even the card 1 having the Lippmann hologram can be manufactured in more factories, and the market can be expanded.
Even if the processes are shared in this way, the hologram laminated sheet material 20A is laminated with the laser coloring sheet material 15A on the lower side Z1 and the transparent sheet material 30A on the upper side Z2. The hologram layer 22 can be protected and can be easily handled during storage and transportation.

As described above, the card 1 according to this embodiment can be easily manufactured even if it has a lip hologram that requires high technology by manufacturing the hologram laminated sheet material 20A.
In addition, although the color of the upper printing layer 31 and the card | curd base material 10 showed the example which is black, it is not limited to this. For example, the upper printing layer 31 and the card substrate 10 may have any color as long as they are similar colors. In addition, regardless of the color of the card substrate 10 or the upper printing layer 31, it is sufficient that the upper printing layer 31 has an effect of concealing the edge 22b of the hologram layer.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.
In the following description and drawings, parts having the same functions as those of the first embodiment described above are denoted by the same reference numerals or the same reference numerals at the end (last two digits), and repeated descriptions are omitted as appropriate. To do.
FIG. 4 is a view for explaining the card manufacturing method of the second embodiment, and is a cross-sectional view of the base sheet material 10A and the hologram laminated sheet material 220A (a figure corresponding to FIG. 2).
In the hologram laminated sheet material 220A, a PET layer 221 (protective sheet) and an HS layer 222 (lower adhesive layer) are laminated in order from the lower side Z1 instead of the PC layer 21 (see FIG. 1).

When the hologram laminate 220, the laminate of the transparent sheet material 30A, and the laser coloring sheet material 15A are laminated, the HS layer 221 is bonded between the hologram laminate sheet material 220A and the base sheet material 10A by heat sealing. To do. For this reason, the HS layer 221 is higher in the adhesive development temperature than the HS layer 23 for the same reason as in the first embodiment. That is, when the hologram layer 22 is laminated under the transparent sheet layer 30 by heat sealing, the adhesiveness of the HS layer 23 is exhibited, but the adhesiveness of the HS layer 221 is not expressed.
Further, the PET layer 222 can suppress the destruction of the hologram due to the pressurization.

As described above, the card of this embodiment has the same effects as those of the first embodiment because the PET layer 221 and the HS layer 222 function in the same manner as the PC layer 21 of the first embodiment.
The PET layer 222 may be laminated between the hologram layer 22 and the HS layer 23. Even in this case, it has been confirmed by trial manufacture that the PET layer 222 can suppress the destruction of the hologram due to the pressurization.

(Third embodiment)
Next, a third embodiment of the present invention will be described.
FIG. 5 is a plan view and a cross-sectional view of the card 301 of the third embodiment.
The card substrate 310 is different from the first embodiment in that it includes a print layer 311.
FIG. 5 illustrates an example in which the name of the cardholder is printed as the print layer 311, but the present invention is not limited to this, and a finer background pattern, microprint, or the like may be provided. Although description is omitted, the printing layer 311 is provided by printing on the base sheet material 10A at the time of manufacturing the base sheet material 10A (see FIG. 2). Note that the color of the card substrate 310 is not black and may be other colors.
The upper printing layer 331 is not provided with the transition part 31c, and only the characters 331a and figures 331b necessary for the transparent sheet material are printed. That is, in the background region other than the characters 331a and the graphic 331b, the transparent surface is exposed, the card base material 310 can be visually recognized (see arrow C), and the edge 22b of the hologram layer 22 can also be visually recognized.
The laser printing 15a may be printed in an area where the upper printing layer 331 is not provided.

As described above, the card 301 of the present embodiment can visually recognize the upper surface of the card base 310 and the print layer 311 on the card base 310, and can have a mode different from the above-described embodiment. For example, if a photo of the cardholder is provided on the print layer 311, the card 301 is suitable for a certificate or the like.
The configuration of the third embodiment can also be applied to the second embodiment.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described.
FIG. 6 is a view for explaining the card manufacturing method of the fourth embodiment, and is a cross-sectional view of the base sheet material 10A and the hologram laminated sheet material 420A (a diagram corresponding to FIG. 2).
In the card of the fourth embodiment, the configuration of the hologram laminate 420 is opposite to that of the first embodiment. That is, in the hologram laminate 420, the PC layer 21, the hologram layer 22, and the HS layer 23 are sequentially laminated from the lower side Z1.

For this reason, the lamination process of hologram lamination sheet material 220A is reverse to the first embodiment. That is, the lamination process of the hologram lamination sheet material 220A is as follows.
(1) Lamination of Laser Coloring Sheet Material 15A and Hologram Laminate 220 The laser coloring sheet material 15A and the hologram laminate 220 are bonded to the lower side Z1 of the hologram laminate 220 by heat sealing. The set temperature of the heat seal is set to a temperature at which the adhesiveness of the HS layer 23 is exhibited but the adhesiveness of the PC layer 21 is not exhibited.
(2) Lamination (Lamination of Laser Coloring Sheet Material 15A and Hologram Lamination Body 220) and Transparent Sheet Material 30A)
The laminated body (laminated body of the laser coloring sheet material 15A and the hologram laminated body 220) and the transparent sheet material 30A (transparent sheet layer 30) are heated and pressurized, and bonded and laminated by heat sealing.
The portion where the laser coloring sheet material 15A and the transparent sheet layer 30 are in direct contact is bonded by thermal welding of these sheet layers, while the portion where the transparent sheet material 30A and the PC layer 21 are in contact is thermal welding of the PC layer 21. It adheres by adhesiveness.

As described above, the card of this embodiment can be manufactured even if the stacking order of the hologram laminate 420 is reversed from that of the first embodiment, and can be set as appropriate depending on the convenience of the card manufacturing process. Even if the stacking order is changed in this way, the same effects as those of the first embodiment can be obtained.
The configuration of the fourth embodiment can also be applied to the second and third embodiments.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made as in the modifications described later, and these are also included in the present invention. Within the technical scope. In addition, the effects described in the embodiments are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiments. It should be noted that the above-described embodiment and modifications described later can be used in appropriate combination, but detailed description thereof is omitted.

(1) In the embodiment, an example in which the hologram layer is a Lippmann type is shown, but the present invention is not limited to this. For example, the hologram layer may be an embossed type.

(2) In the embodiment, the example in which the print layer is provided on the upper side of the transparent sheet layer is shown, but the present invention is not limited to this. For example, a printing layer may be provided in the lower layer of a transparent sheet layer, and this may be laminated | stacked on a card | curd base material. In this case, since the transparent sheet layer is disposed on the upper side of the printing layer, the printing layer can be protected from fouling during production or use.

(3) In the embodiment, the example in which the hologram laminate includes the adhesive layers (PC layer, HS layer) on the upper and lower sides of the hologram layer is shown, but the present invention is not limited to this. The hologram laminate may include an adhesive layer only on one of the upper and lower sides of the hologram layer. In this case, an adhesive layer may be provided on the side of the transparent sheet layer or the laser coloring layer that is first laminated, above and below the hologram layer. For example, when a transparent sheet layer (transparent sheet material) is first laminated as in the first embodiment, an adhesive layer may be provided only on the upper side of the hologram layer.
Since the hologram laminate is sandwiched between the transparent sheet layer and the laser coloring layer in a later step, if only one of the upper and lower sides of the hologram layer is adhered, it is stably held between them. It is.

(4) In the embodiment, the example in which the transition unit does not overlap with the image portion of the hologram is shown, but the present invention is not limited to this. The transition portion may be formed so as to overlap with the image portion of the hologram and become lighter and darker toward the inside. In this case, the image can be observed by the transition unit so that the periphery is blurred and becomes sharper as it goes inward.

(5) In the embodiment, an example of a card having a hologram layer has been shown, but the present invention is not limited to this. For example, it may be used for a cash voucher or the like.

(6) In the embodiment, the card is shown as an example of being manufactured by multiple imposition using a sheet material, but is not limited to this. The card may be manufactured as a single unit. In this case, each sheet material constituting one card may be laminated. In this case, a transparent sheet layer in which one hologram layer is laminated may be used as a hologram laminated sheet material in which one hologram layer is laminated.

(7) In the embodiment, the example in which the printing on the card substrate is provided in a range that does not overlap the hologram layer is shown, but the present invention is not limited to this. By providing the printing on the card substrate so as to overlap the hologram layer, the hologram image and this printing are observed to overlap and the design can be improved. In this case, since it is difficult to forge, security can be improved.

1,301 card 10,310 card substrate 10A substrate sheet material 12 lower printing layer 15 laser coloring layer 15A laser coloring sheet material 15a laser printing 20, 220, 420 hologram laminate 20A, 220A, 420A hologram laminate sheet material 21 PET Layer 22 Hologram layer 22a Hologram image 23 HS layer 30 Transparent sheet layer 30A Transparent sheet material 31,331 Upper printing layer 31c Transition portion 31g Hologram observation window portion 31h Laser light passage window portion 221 HS layer 222 PET layer 311 Printing layer

Claims (10)

A light diffraction layer laminate sheet that forms a part of the laminated structure of the card by being laminated on the card substrate,
An optical diffraction layer;
A transparent sheet layer having an outer shape larger than the outer shape of the light diffraction layer and laminated on the upper side which is one surface side of the light diffraction layer;
A laser coloring layer having an outer shape larger than the outer shape of the light diffraction layer and laminated on the lower side which is the other surface side of the light diffraction layer;
An optical diffraction layer laminate sheet characterized by the above. In the light diffraction layer laminate sheet according to claim 1,
A light diffraction image observation window for observing a light diffraction image of the light diffraction layer; and a laser light passage window for allowing laser light to pass through the laser coloring layer. Having a printing layer,
An optical diffraction layer laminate sheet characterized by the above. In the light diffraction layer laminate sheet according to claim 2,
This light diffraction layer laminate sheet is laminated on the upper side of the card substrate,
The color of the edge of the light diffraction image observation window and the color of the edge of the laser light passage window are the same as or almost the same as the color of the card base material,
The color of the laser coloring layer by laser printing is different from the color of the card substrate,
An optical diffraction layer laminate sheet characterized by the above. In the light diffraction layer laminate sheet according to claim 3,
At least one of the color of the edge portion of the light diffraction image observation window portion and the edge portion of the laser light passage window portion includes a transition portion that becomes lighter and darker toward the inside of the window,
An optical diffraction layer laminate sheet characterized by the above. In the light diffraction layer laminated sheet according to any one of claims 1 to 4,
A first thermal bonding layer that bonds between the transparent sheet layer and the light diffraction layer, and at least one layer between the laser coloring layer and the light diffraction layer;
An optical diffraction layer laminate sheet characterized by the above. In the light diffraction layer laminate sheet according to claim 5,
A second thermal adhesive layer for adhering an interlayer different from the first thermal adhesive layer among the transparent sheet layer and the optical diffraction layer, the laser coloring layer and the optical diffraction layer;
An optical diffraction layer laminate sheet characterized by the above. In the light diffraction layer laminate sheet according to claim 6,
The adhesion temperature difference between the first thermal adhesive layer and the second thermal adhesive layer is so large that the adhesiveness of the other thermal adhesive layer is not manifested when the one thermal adhesive layer is adhered;
An optical diffraction layer laminate sheet characterized by the above. In the light diffraction layer laminate sheet according to claim 6 or 7,
One of the first thermal adhesive layer and the second thermal adhesive layer is a thermoplastic resin sheet,
The other of the first thermal adhesive layer and the second thermal adhesive layer is a thermoplastic adhesive,
An optical diffraction layer laminate sheet characterized by the above. In the light diffraction layer laminate sheet according to claim 6 or 7,
The first thermal adhesive layer and the second thermal adhesive layer are thermoplastic adhesives,
A protective sheet provided between one of the layers between the light diffraction layer and the first thermal adhesive layer and between the light diffraction layer and the second thermal adhesive layer;
An optical diffraction layer laminate sheet characterized by the above. A method for producing a card using the optical diffraction layer laminate sheet according to any one of claims 1 to 9,
A card substrate lamination step of laminating a card substrate on the lower side of the optical diffraction layer laminate sheet;
A printing process for printing by passing a laser beam through the laser coloring layer,
A card manufacturing method characterized by the above.

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