JP2018069469A - Scratch sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scratch sheet capable of not only allowing concealed information to be known but also making the information appear gradually, by performing a predetermined action.SOLUTION: A scratch sheet 10 includes: a base material 1; an information recording layer 2 formed on one face of the base material 1; a release layer 3 formed over the information recording layer 2; a first concealing layer 4 formed over the release layer 3, having a thick coated part 4a being a relatively thick portion and a thin coated part 4b being thinner than the thick coated part 4a; a second concealing layer 5 formed over the first concealing layer 4, having a thick coated part 5a being a relatively thick portion and a thin coated part 5b being thinner than the thick coated part 5a; and a protective layer 6 for protecting the second concealing layer 5. The scratch sheet 10 is characterized in that the thin coated part 5b of the second concealing layer 5 overlaps a position corresponding to the thick coated part 4a of the first concealing layer 4, and the thick coated part 5a of the second concealing layer 5 overlaps the position corresponding to the thin coated part 4b of the first concealing layer 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a scratch sheet that makes it possible to visually recognize hidden information by performing a predetermined operation.

  Conventionally, a sheet having a scratch structure that makes it possible to visually recognize hidden information by forming a concealment layer on information to be concealed and scratching (scratching or rubbing) the concealment layer with a coin or the like has been used. Yes. A sheet having such a scratch structure is used for a medium that needs to conceal information, such as a lottery ticket or a lottery ticket. The applicant has also proposed various forms of sheets (scratch sheets) having a scratch structure (see Patent Documents 1 and 2).

JP 2013-22853 A JP 2013-91233 A

  As described above, the scratch sheet is often used for a lottery ticket, a lottery ticket, and the like, and is required to have entertainment. However, in the conventional scratch sheet, the hidden information only appears by performing a predetermined operation such as scraping or peeling off the masking layer.

  Accordingly, an object of the present invention is to provide a scratch sheet that can not only simply know hidden information but also allow information to appear in stages by performing a predetermined operation.

In order to solve the above problems, in the first aspect of the present invention,
A substrate;
An information recording layer formed on one surface of the substrate;
A release layer formed on the information recording layer;
A first concealing layer formed on the release layer and having a thick application part that is a relatively thick part and a thin application part that is thinner than the thick application part;
A second concealing layer formed on the first concealing layer and having a thick coating part which is a relatively thick part and a thin coating part thinner than the thick coating part;
A protective layer protecting the second concealing layer;
Have
A thin coating portion of the second masking layer overlaps with a position corresponding to the thick coating portion of the first masking layer, and a thick coating of the second masking layer is positioned at a position corresponding to the thin coating portion of the first masking layer. Provided is a scratch sheet characterized in that the portions overlap.

  According to the first aspect of the present invention, the scratch sheet comprises a base material, an information recording layer formed on one surface of the base material, a release layer formed over the information recording layer, and an overlap on the release layer. The first concealing layer having a thick application part that is a relatively thick part and a thin application part that is thinner than the thick application part, and the first concealment layer are formed so as to overlap with each other. A second coating layer having a thick coating portion and a thin coating portion thinner than the thick coating portion, and a protective layer for protecting the second masking layer, corresponding to the thick coating portion of the first masking layer The thin coating portion of the second masking layer overlaps the position, and the thick coating portion of the second masking layer overlaps the position corresponding to the thin coating portion of the first masking layer. The thin coating portion of the first masking layer extends to the thick coating portion of the second masking layer, and the thick coating portion of the second masking layer peels off from the first masking layer. Kunar. Moreover, since the 2nd concealing layer is protected by the protective layer, it has friction resistance, and the release layer can be thickened, and the peelability (easy to peel) is improved. For this reason, only the thick coating portion of the second masking layer can be peeled off with an adhesive tape or the like, and information is made to appear in stages by scraping the remaining first masking layer and second masking layer with a coin or the like. It becomes possible.

  In the second aspect of the present invention, in the scratch sheet, the thickness of the thick coating portion of the first masking layer is 3.0 μm to 5.0 μm, and the thin coating portion of the first masking layer The thickness of is from 0.5 μm to 1.5 μm.

  According to the 2nd aspect of this invention, the thickness of the thick application part of a 1st concealment layer is 3.0 micrometers-5.0 micrometers, and the thickness of the thin application part of a 1st concealment layer is 0.00. Since it is 5 μm to 1.5 μm, the influence of the peeling layer extends to the thick coating portion of the second concealing layer through the thin coating portion of the first concealing layer, while the thick coating portion of the first concealing layer The possibility of being able to avoid reaching the thin coating portion of the second concealing layer is increased. For this reason, it becomes easier to peel only the thick coating part of the 2nd concealment layer from the 1st concealment layer.

  According to the present invention, by performing a predetermined operation, it is possible not only to know hidden information but also to make information appear in stages.

It is a figure which shows the scratch seat which concerns on one Embodiment of this invention. It is a figure which shows the scratch sheet | seat of the state which removed a part of 2nd concealment layer 5 and the protective layer 6 using the adhesive tape etc. FIG. It is a figure which shows the scratch sheet in the state after being rubbed with a coin. It is a figure which shows the example from which the residual pattern of the 2nd concealment layer 5 and the protective layer 6 obtained by the formation pattern of the thick application part of the 1st concealment layer 4 differs.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
<1. Scratch seat configuration>
FIG. 1 is a view showing a scratch sheet according to an embodiment of the present invention. 1A is a plan view, and FIG. 1B is a cross-sectional view corresponding to the line AA in FIG. 1A. In FIG. 1, 1 is a substrate, 2 is an information recording layer, 3 is a release layer, 4 is a first hiding layer, 5 is a second hiding layer, 6 is a protective layer, and 10 is a scratch sheet. The substrate 1 serves as a support for supporting the information recording layer 2, the release layer 3, the first hiding layer 4, the second hiding layer 5, and the protective layer 6. Thickness and size according to purpose and application are used. On one surface, the other surface, or both surfaces of the base material 1, a print layer on which predetermined information is separately printed with a printing ink may be formed.

  As the concealing layer, there are two layers of the first concealing layer 4 and the second concealing layer 5, and the second concealing layer 5 is formed so as to overlap the first concealing layer 4. The first concealing layer 4 includes a thick coating portion 4a coated relatively thick and a thin coating portion 4b formed relatively thin. When viewed from the upper surface side, the thick coating portion 4a is formed in a predetermined pattern in a planar shape. In the present embodiment, the thick coating portion 4a of the first concealing layer 4 is formed in a pattern in which rectangles (meaning including squares) are arranged in a lattice pattern. Moreover, the 2nd concealment layer 5 is provided with the thin application part 5b formed relatively thinly with the thick application part 5a applied relatively thickly. The thin coating portion 5b of the second masking layer 5 is overlapped at a position corresponding to the thick coating portion 4a of the first masking layer 4, and the second masking is performed at a position corresponding to the thin coating portion 4b of the first masking layer 4. The thick coating portions 5a of the layer 5 overlap.

  As the colors of the first hiding layer 4 and the second hiding layer 5, various colors can be used, but it is necessary to make the information recording layer 2 a color that can be hidden so that it is difficult to visually recognize. Further, as described later, when a part of the second concealing layer 5 is peeled off with an adhesive tape or the like, the first concealing layer 4 and the second concealing layer 4 can be clearly distinguished from each other when the part is peeled off. The color of the concealing layer 5 is preferably a color that is so different that it can be visually recognized. Here, the pressure-sensitive adhesive tape or the like means, for example, a tape coated with a pressure-sensitive adhesive or an adhesive such as a cellophane tape, a vinyl tape, or a gum tape. In the example of FIG. 1, the second concealment layer 5 conceals the presence of the first concealment layer 4, making it difficult to visually recognize the first concealment layer 4. In the example of FIG. 1, when the second concealment layer 5 conceals the presence of the first concealment layer 4, the formation positions of the thick coating portions 4 a of the first concealment layer 4 are indicated by broken lines arranged in a lattice pattern. This is indicated by a rectangular frame.

  The information recording layer 2 is a layer in which predetermined information such as characters and symbols is recorded. The information recording layer 2 is concealed by the first concealing layer 4 and the second concealing layer 5 formed via the release layer 3 so that it is difficult to visually recognize.

  The release layer 3 is a layer formed so that the first hiding layer 4 can be easily peeled from the information recording layer 2. The release layer 3 is formed so as to cover the information recording layer 2. The first hiding layer 4 and the second hiding layer 5 are layers formed to hide the information recording layer 2. The first hiding layer 4 and the second hiding layer 5 are formed so as to overlap the peeling layer 3. Therefore, the first hiding layer 4 and the second hiding layer 5 are also formed so as to cover the information recording layer 2.

  The first concealment layer 4 is a layer for concealing information expressed by the information recording layer 2, and is formed so as to cover the information recording layer 2. The first hiding layer 4 is formed using black ink or the like.

  The second concealment layer 5 is a layer for concealing information expressed by the information recording layer 2 and is formed so as to cover the information recording layer 2. In order to enable visual discrimination from the first hiding layer 4 formed using black ink, the second hiding layer 5 is formed using ink of a color different from black ink. In this embodiment, the 2nd concealment layer 5 is formed using silver ink. Silver ink contains aluminum powder, which is a metal powder. By including the metal powder, the second hiding layer 5 itself is easily solidified, and the adhesion with the first hiding layer 4 can be weakened. For this reason, it becomes easy to peel the 2nd concealment layer 5 from the 1st concealment layer 4 with an adhesive tape. Therefore, it is preferable that the second concealment layer 5 contains a metal powder.

  The protective layer 6 is a layer for protecting the second concealment layer 5 and is formed so as to cover the second concealment layer 5.

  The cross-sectional view of FIG. 1B shows the layer structure of the scratch sheet 10, and therefore the thickness ratio is different from the actual one. Actually, the width of the scratch sheet is several tens mm to several hundreds mm, whereas the thickness of the scratch sheet is about several hundred μm. In FIG. 1B, the thicknesses of the base material 1, the information recording layer 2, the release layer 3, the first concealing layer 4, and the second concealing layer 5 are shown to be substantially the same. Actually, the thicknesses are different as described later. The layer structure of the scratch sheet may be either the upper layer or the lower layer. However, for convenience of explanation, the description will be made with the protective layer 6 side as the upper layer and the base material 1 side as the lower layer.

  Examples of the substrate 1 include high-quality paper, art paper, coated paper, cast-coated paper, synthetic resin or emulsion-impregnated paper, synthetic rubber latex-impregnated paper, synthetic resin-added paper, cellulose fiber paper and other papers, polyolefin ( Polyethylene, polypropylene, etc.), polystyrene, polycarbonate, polyethylene terephthalate, polyvinyl chloride, polymethacrylate and other synthetic resin plastic sheets, and white opaque films formed by adding white pigments and fillers to these synthetic resins, Alternatively, a film (so-called synthetic paper) having fine voids (microvoids) inside the substrate can be used.

  Although there is no limitation in particular about the thickness of the base material 1, 3 micrometers-300 micrometers are preferable and it is more preferable that they are 20 micrometers-175 micrometers. The color of the substrate 1 is not particularly limited, but is preferably a color different from that of the information recording layer 2 so that the information expressed on the information recording layer 2 can be easily seen.

  As described above, the information recording layer 2 is a layer in which predetermined information such as characters, designs, and the like is recorded. Various information can be recorded as the predetermined information. For example, information indicating a number such as “12345” can be recorded, and the scratch sheet can be used as a “lottery” for lottery. The information recording layer 2 is formed by printing a known printing ink by a known printing method such as offset printing, gravure printing, screen printing, ink jet printing, or electrophotographic printing.

  The peeling layer 3 is a layer for facilitating peeling of the first concealing layer 4. Therefore, as the release layer 3, it is preferable to use a layer having low adhesion to the first cover layer 4 so that the first cover layer 4 can be easily peeled from the release layer 3. For forming the release layer 3, for example, an acrylic resin, a vinyl resin, a polyester resin, a fiber resin, a wax, a melamine to which a release agent such as fluorine resin, silicone, or various waxes is added or copolymerized is used. A resin or the like can be used. Moreover, in this embodiment, in order to visually recognize the information recording layer 2 on the lower layer side, it is preferable that the release layer 3 has transparency. The coating amount and coating thickness for forming the release layer 3 are not particularly limited, but preferably the coating thickness is 1.0 μm or more. Due to the presence of the protective layer 6, the influence of the force for peeling by the adhesive tape or the like hardly reaches the first hiding layer 4, and even if the peeling layer 3 is thick, the first hiding layer 4 is separated from the peeling layer 3. It becomes difficult to peel. For this reason, there is no particular upper limit to the coating thickness of the release layer 3, but in practice it is preferably 10 μm or less. When the coating thickness of the peeling layer 3 is less than 1 μm, it is difficult to peel the first concealing layer 4 with a coin or the like.

  The first concealment layer 4 is a layer that can be scraped off with a coin or the like, or can be peeled off with an adhesive (which also includes “adhesive”), and is a layer for concealing the information recording layer 2 It is. The first hiding layer 4 is formed by printing ink with high hiding properties. Specifically, a pigment having high concealability is dispersed in a binder resin in a relatively large amount. If necessary, it may be an ink mixed with a dye or a normal pigment for the purpose of coloring. The first hiding layer 4 is formed so as to overlap the release layer 3.

  Examples of highly concealing pigments constituting the first concealing layer 4 and the second concealing layer 5 include metal powders such as silver powder, aluminum powder, brass powder, or copper powder, calcium carbonate, zinc oxide, alumina, Titanium dioxide, silica, barium sulfate, talc, kaolin, clay, carbon black, or resin powder can be used. Further, as the binder resin constituting the first hiding layer 4 and the second hiding layer 5, a resin that holds the pigment having the high hiding property is selected and used. For example, natural rubber or rubber-based natural resins such as hydrochloric acid rubber, polybutadiene, styrene-butadiene copolymer, acrylonitrile-butadiene copolymer, polyisoprene, polychloroprene, acrylic, vinyl chloride, or vinyl chloride-vinyl acetate copolymer Use coalescence. The colors of the first hiding layer 4 and the second hiding layer 5 are not particularly limited as long as it is difficult to visually recognize the information recording layer 2.

  The first concealing layer 4 may be formed by, for example, a well-known printing method such as an offset printing method, a gravure printing method, a silk screen printing method, or a flexographic printing method using black ink made of carbon black. The first concealing layer 4 is formed by forming the first layer so as to cover the entire peeling layer 3 and further forming the second layer in a pattern on the first layer. The location where the first layer and the second layer overlap is the thick coating portion 4a, and the location of only the first layer is the thin coating portion 4b. Both the formation of the first layer and the formation of the second layer are formed by the known printing method as described above, but the formation of the first layer and the formation of the second layer may be performed by the same printing method, Different printing methods may be used.

  The coating amount and coating thickness for forming the first masking layer 4 are not particularly limited, but the coating thickness of the first layer is preferably 0.5 μm to 1.5 μm, and the coating thickness of the second layer is 2 The thickness is preferably 5 μm to 3.5 μm. Therefore, the coating thickness of the thick coating portion 4a of the first masking layer 4 is in the range of 3.0 μm to 5.0 μm, and the coating thickness of the thin coating portion 4b of the first masking layer 4 is 0.5 μm to 1.5 μm. It becomes the range. Exceeding these ranges makes it difficult for the release component of the release ink forming the release layer 3 to penetrate appropriately beyond the thin coating portion 4b of the first cover layer 4, and the thickness of the first cover layer 4 Inconveniences such as affecting the application part 4a occur.

  The second hiding layer 5 is a layer for facilitating peeling from the first hiding layer 4 with an adhesive tape or the like. Therefore, it is preferable to use the second concealment layer 5 having a high adhesiveness that is easy to adhere to an adhesive tape or the like. As described above, the second concealing layer 5 can be formed using the same material as that of the first concealing layer 4. However, it is necessary to use a material having higher adhesiveness such as an adhesive tape and lower adhesiveness to the first concealing layer 4. The second concealing layer 5 may be formed by, for example, a known printing method such as an offset printing method, a gravure printing method, a silk screen printing, or a flexographic printing method using silver ink or the like obtained by converting metal powder into ink.

  Further, the application amount and application thickness for forming the second concealing layer 5 are not particularly limited, but in the thin application part 5b, the application thickness is preferably 2 μm to 3 μm. In order to make the upper layer side surface of the second concealing layer 5 flat, the first concealing layer 4 is further provided in the thick coating portion 5a, which is a portion overlapping the thin coating portion 4b of the first concealing layer 4. The thickness of the second layer is added.

  Here, the term “flat surface” means that the surface is recognized as having a uniform surface without any particular depression or protrusion on the surface. Accordingly, although microscopically there are irregularities of less than 1 μm, a surface that is visually recognized as a flat surface is also included in the “flat surface”. More precisely, the flat surface is a surface roughness Ra in the “roughness curve” excluding the “waviness curve” in the “surface roughness evaluation method” defined in the JIS standard. It means 01 to 1.0 μm (more preferably 0.01 to 0.50 μm). However, in the present invention, when used as a scratch sheet, the flatness is sufficient so that the user does not feel uncomfortable.

  If the thickness of the second masking layer 5 at the thin coating portion 5b is less than 2 μm, the difference in thickness from the thick coating portion 5a becomes too large, and the possibility that satisfactory coating cannot be performed increases. Moreover, when the thickness of the thin coating part 5b of the 2nd concealment layer 5 exceeds 3 micrometers, there exists a possibility that it will adhere to an adhesive tape etc. and the 2nd concealment layer 5 may peel all. Therefore, it is preferable that the thickness of the thin coating portion 5 b of the second masking layer 5 is thicker than the thickness of the thin coating portion 4 b of the first masking layer 4. Since the thickness of the second coating layer 5 in the thin coating portion 5b is larger than the thickness of the thin coating portion 4b of the first masking layer 4, the first masking provided with the thick coating portion 4a and the thin coating portion 4b. This is because the second concealing layer 5 is stably formed even when it is superimposed on the layer 4.

  The protective layer 6 is a layer for protecting the second concealing layer 5. The printing ink for forming the protective layer 6 needs to adhere well to the second concealing layer 5, and the same vehicle as that for forming the second concealing layer 5 is suitable. Etc. are added to make ink. The protective layer 6 may have any color, but usually a colorless one is used. The protective layer 6 may be transparent or opaque, but is preferably transparent.

<2. Example>
As the substrate 1, mat coated paper “SWORD iJET (registered trademark) 4.3 mat” manufactured by Mitsubishi Paper Industries, Ltd. having a basis weight of 127.9 g / m ² was used.
First, the information recording layer 2 was formed on the substrate 1 by an inkjet printing method using a normal inkjet ink. In the present embodiment, “12345”, which is character information, is formed as shown in FIG.
In addition, using normal offset ink, by the offset printing method, a predetermined message (in the example of Fig. 3 (a) "scratch sheet""rub with coin""peel with tape", etc.), Other necessary patterns were printed.
Subsequently, release ink was printed so as to cover the information recording layer 2. As the release ink, “UV Flexo UV Release Varnish Fluo Blue 9R0128V” manufactured by SICPA was used.
The release ink was printed by a flexographic printing method so that the thickness when dried was 5 μm. As a result, a release layer 3 overlapping the information recording layer 2 was formed. At this time, the release ink was printed so as to cover the portion where the message “Please rub with coins” was also covered.

Further, the black ink was printed uniformly over the release layer 3. As a black ink, “UV Flexo Scratch-Off Black 7UG7009” manufactured by SICPA was used. The black ink was printed by a flexographic printing method so that the thickness was 1 μm. This is a portion corresponding to the first layer of the first hiding layer 4.
Subsequently, a pattern was printed using the same black ink. The black ink was printed by a flexographic printing method so that the thickness was 3 μm. This is a portion corresponding to the second layer of the first hiding layer 4. The part overprinted in the pattern form becomes a thick coating part 4a having a thickness of 4 μm, and the part not overprinted in the pattern form becomes a thin application part 4b having a thickness of 1 μm.

In addition, silver ink was printed on top of the black ink. As the silver ink, a mixture of “UV Flexo Varnish For Scratch Off Silver / Gold 880770” and “UV Silver Paste 880761” manufactured by SICPA at a mass ratio of 4: 1 was used. The silver ink was printed so that the thickness was 2 μm and the upper surface was a flat surface in the thin coating portion 5 b that is a portion overlapping the thick coating portion 4 a of the first hiding layer 4. Printing was performed by a flexographic printing method. In the thick coating portion 5a, which is a portion overlapping the thin coating portion 4b of the first masking layer 4, 3 μm corresponding to the thickness of the second layer of the first masking layer 4 is added, so the thickness is 5 μm. It became. The portion to which the silver ink is applied becomes the second hiding layer 5.
As a result, a first hiding layer 4 and a second hiding layer 5 having a two-layer structure of black ink and silver ink were formed to overlap the release layer 3.
Also, silver ink was printed so as to cover the part where the message “Please rub with coins” was printed.
Further, OP varnish was applied to the silver ink. As the OP varnish, “UV Flexo UV Release Varnish Fluo Blue 9R0128V” manufactured by SICPA was used. Thereby, the protective layer 6 was formed.
As described above, the scratch sheet as shown in FIG. 1 was completed.
Since the first hiding layer 4 is black including carbon black and the second hiding layer 5 is silver including metal powder, the protective layer 6 is transparent, but the first hiding layer 4 and second It was difficult to visually recognize the information expressed on the information recording layer 2 through the concealing layer 5.

<3. Example of use>
In the scratch sheet 10 shown in FIG. 1, a first hiding layer 4 and a second hiding layer 5 are formed so as to cover the information recording layer 2. Since the first hiding layer 4 is black and the second hiding layer 5 is silver ink, the information recording layer 2 cannot be visually recognized. Therefore, in the example of FIG. 1A, the message “please peel with tape” is printed together with an arrow indicating the second hiding layer 5. As described above, in FIG. 1A, the formation position of the thick coating portion of the first concealing layer 4 is indicated by a rectangular frame arranged in a lattice shape. The frame is difficult to see.

  In the scratch sheet 10 shown in FIG. 1, the adhesive surface of the adhesive tape is brought into contact with the protective layer 6 in accordance with the message “Please peel off with tape”. At the place where the protective layer 6 is formed, the adhesive surface of the adhesive tape and the protective layer 6 come into contact. Then, the adhesive tape is peeled off from the scratch sheet 10.

  Since the protective layer 6 and the second concealing layer 5 have high adhesion, the second concealing layer 5 is peeled off together with the protective layer 6. On the other hand, the release component of the release ink that forms the release layer 3 penetrates and influences beyond the first cover layer 4 when the first cover layer 4 is thin. Therefore, a peeling action is given to the thick coating portion 5a of the second masking layer 5 in contact with the thin coating portion 4b of the first masking layer 4, and the thick coating portion 5a of the second masking layer 5 becomes the first masking layer 4. It peels from the thin application part 4b. When the first concealing layer 4 is thick, the exfoliating component of the exfoliating ink that forms the exfoliating layer 3 does not penetrate beyond the first concealing layer 4 and has no effect. Therefore, the thin coating portion 5b of the second masking layer 5 does not have a peeling action on the thin coating portion 5b of the second masking layer 5 that is in contact with the thick coating portion 4a of the first masking layer 4. 4 is not peeled off from the thick coating portion 4a. At this time, even if the release layer 3 is relatively thick (for example, 4 mm or more), the presence of the protective layer 6 makes it difficult for the influence of the force for peeling by the adhesive tape or the like to reach the first concealment layer 4. 1 hiding layer 4 becomes difficult to peel from release layer 3.

  The first hiding layer 4, the second hiding layer 5, and the protective layer 6 can be removed by suddenly scraping with coins. However, if the coin is rubbed, all of the first concealment layer 4 is scraped all at once, and all the information recording layer 2 becomes visible. Therefore, in order to change the visual state in two stages, a message as shown in FIG. 1A is printed, and only the second concealing layer 5 and the protective layer 6 are peeled off using an adhesive tape. It is preferable to encourage them to do so.

  When a part of the second concealing layer 5 (thick application portion 5a) is peeled off, the scratch sheet 10 is in a state as shown in FIG. FIG. 2 is a view showing the scratch sheet in a state after the thick coating portion 5a of the second masking layer 5 is peeled off by the adhesive tape. FIG. 2A is a plan view of the scratch sheet at this point, and FIG. 2B is a cross-sectional view corresponding to the line BB in FIG. 2A. As shown in FIG. 2B, only the thick coating portion 5 a of the second concealing layer 5 is peeled from the original scratch sheet 10. When viewed from the surface of the scratch sheet 10, as shown in FIG. 2A, a pattern corresponding to the planar shape of the thick coating portion 4a of the first concealing layer 4 can be visually recognized. That is, as shown in FIG. 2A, the thin coating portion 5b of the second masking layer 5 remains in a pattern in which rectangles that are the shapes of the thick coating portions 4a of the first masking layer 4 are arranged in a lattice pattern. In addition, when the thick coating part 5a of the 2nd concealment layer 5 is peeled off with the adhesive tape, in reality, the step does not always appear clearly as shown in FIG. 2 (b). FIG. 2B shows an ideal state and clearly shows the steps for convenience of explanation. However, even if the thick coating portion 5a is not peeled into a rectangular cross section and the level difference does not appear clearly, if the pattern by the thick coating portion and the thin coating portion appears when viewed from the surface, the predetermined information Will be obtained.

  Therefore, from the surface of the scratch sheet 10, a silver lattice pattern with a black background is visually recognized. The pattern formed by the thick coating portion 4a of the first masking layer 4 and the thin coating portion 5b of the second masking layer 5 as the colors of the first masking layer 4 and the second masking layer 5 are clearly different. Will be clearly recognized. However, even if the colors are not different, if the inks forming the first hiding layer 4 and the second hiding layer 5 are different, the pattern can be recognized due to the difference in texture and gloss. It becomes possible.

  Further, since the release layer 3 is formed on the message “Please rub with coins”, the message “Please rub with coins” appears as shown in FIG. It becomes visible together with an arrow indicating the remaining position of the masking layer 4.

  In the scratch sheet 10 shown in FIG. 2, if the first concealing layer 4 and the remaining second concealing layer 5 are rubbed with coins in accordance with the message “Please rub with coins”, the first concealing layer 4 and the remaining one remain. The second concealing layer 5 is shaved with coins. At this time, if the cutting force is large, the peeling layer 3 may be cut by the coin.

  As a result, the scratch sheet 10 is in a state as shown in FIG. FIG. 3 is a view showing the scratch sheet in a state after the first hiding layer 4 and the second hiding layer 5 are rubbed with coins. That is, as shown in FIG. 3B, only the release layer 3 remains on the information recording layer 2. In the present embodiment, since the release layer 3 has transparency that is visible through a thickness of several μm to several tens of μm, the character “12345” is displayed when viewed from the surface of the scratch sheet 10. Visual recognition is possible. The example of FIG. 3 shows a state in which the first concealing layer 4 and the second concealing layer 5 are all removed. Of course, the first concealing layer 4 and the second concealing layer 4 depend on the state of rubbing with coins. The concealing layer 5 may remain slightly. Even if the first hiding layer 4 and the second hiding layer 5 remain slightly, it is sufficient that the target character “12345” is sufficiently visible.

  For the user, the information expressed by the thick coating portion 4a of the first concealing layer 4 by removing the thick coating portion 5a of the second concealing layer 5 by peeling with an adhesive tape (FIG. 2). In this example, a pattern in which rectangles are arranged in a grid pattern can be acquired. Then, by rubbing the first concealing layer 4 and the remaining second concealing layer 5 with a coin or the like, the first concealing layer 4 and the second concealing layer 5 are removed, and the information recording layer 2 is expressed. Information can be acquired. In this way, the user can enjoy two times step by step with one scratch sheet.

  In the above example, as shown in FIG. 2A, the thick coating portion 4a of the first concealing layer 4 is formed in a pattern in which rectangles are arranged in a lattice pattern. Various patterns can be used as the formation pattern of the thick coating portion of the first masking layer 4. FIG. 4 is a diagram showing a visually recognized pattern when the thick coating portion 4a of the first concealing layer 4 has a different pattern. In the example of FIG. 4, the case where the formation pattern of the thick application part 4a of the 1st concealment layer 4 is made into the shape of the character "coin" is shown. Therefore, the thin coating portion 5b of the second concealing layer 5 remains in the pattern of characters “coin” as shown in FIG. When the pattern formed by the thick coating portion 4a of the first concealing layer 4 and the thin coating portion 5b of the second concealing layer 5 is in the shape of the letters “coin”, the user suggests that the coin is shaved with a coin. Therefore, it is possible not to print the message “Please rub with coins”.

DESCRIPTION OF SYMBOLS 1 ... Base material 2 ... Information recording layer 3 ... Release layer 4 ... 1st concealing layer 5 ... 2nd concealing layer 6 ... Protective layer 4a, 5a ... Thickness Application part 4b, 5b ... Thin application part 10 ... Scratch sheet

Claims (2)

A substrate;
An information recording layer formed on one surface of the substrate;
A release layer formed on the information recording layer;
A first concealing layer formed on the release layer and having a thick application part that is a relatively thick part and a thin application part that is thinner than the thick application part;
A second concealing layer formed on the first concealing layer and having a thick coating part which is a relatively thick part and a thin coating part thinner than the thick coating part;
A protective layer protecting the second concealing layer;
Have
A thin coating portion of the second masking layer overlaps with a position corresponding to the thick coating portion of the first masking layer, and a thick coating of the second masking layer is positioned at a position corresponding to the thin coating portion of the first masking layer. Scratch sheet characterized by overlapping parts. The thickness of the thick coating portion of the first concealing layer is 3.0 μm to 5.0 μm,
2. The scratch sheet according to claim 1, wherein a thickness of the thin coating portion of the first concealing layer is 0.5 μm to 1.5 μm.

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