JP4110555B2 - Sealed body and sealing sheet - Google Patents

Description

  The present invention relates to a sealing body and a sealing sheet.

  As is well known, the winning probability of a game machine such as a slot machine or a pachinko machine is determined by a ROM with a built-in probability calculation program mounted on the control board. In recent years, there has been no end to the illegal act of replacing this ROM with a modified ROM. For this reason, measures are taken to detect the presence or absence of fraud by attaching a seal to the opening and closing doors of game machines that must be opened in case of fraud and the doors of boxes containing control boards. It has been.

  As the sealing body, for example, in Patent Document 1 described later, a printing layer is provided between a base material layer on which a release agent layer having a predetermined pattern shape is formed and an intermediate layer, and the other of the intermediate layers is provided. A peel detection adhesive sheet having a pressure sensitive adhesive layer on its surface is disclosed, and this peel detection adhesive sheet is fraudulent due to elongation deformation of the intermediate layer or distortion of the printed layer that occurs when the adherend is opened. This is to determine the presence or absence of an action.

Further, Patent Document 2 described later has a multilayer structure including a stretched layer with a network structure layer sandwiched therebetween as a laminate that can be discriminated at a glance whether or not it is opened, and an optical diffraction recording medium on the surface of the stretched layer. A layered product in which a pattern is formed is disclosed, and this layered product has a raised structure of the network structure layer accompanying peeling when the adherend is opened and a pattern layer accompanying the raised structure of the network structure layer. The presence / absence of fraud is determined by deformation.
JP 2002-256231 A JP 2003-53866 A

  The present inventor has a technical problem of obtaining a sealed body that can be clearly discriminated whether or not there is a fraudulent change when the adherend is opened, and a more obvious change occurs from the conventional sealed bodies. As a result of repeated research and experiments to realize the embodiment, an image layer in which characters and / or patterns are drawn with colored ink on the sealing body, and an ink in which a pigment having a particle diameter of 5 to 60 μm is dispersed on the image layer Since the pigment is present in a dense state in the masking layer before stretching, the characters and / or patterns drawn in the image layer are blocked by the pigment in the masking layer. Although it cannot be visually recognized, since the pigment is present in a sparse state in the hiding layer after stretching, the characters and / or patterns drawn on the image layer can be seen through the gaps between the pigments in the hiding layer. Before and after stretching And significant visual changes on the seal member occurs obtained a finding should Katsumoku that can reliably detect the presence or absence of the opening of the adherend is obtained by achieving the technical problems.

  The technical problem can be solved by the present invention as follows.

That is, in the sealing body according to the present invention, an image layer in which characters and / or patterns are drawn with colored ink and a pigment having a particle diameter of 5 to 60 μm are dispersed on the image layer so that the concentration is 5 to 30% . A concealing layer formed by laminating ink, and each layer is in a state where the pigments are dense so that characters and / or patterns of the image layer cannot be seen from the gaps of the pigment of the concealing layer before stretching. The pigment is in a sparse state so that characters and / or patterns in the image layer can be visually recognized from the gaps of the pigment in the hiding layer after stretching by 2% or more from the state before stretching .

  Moreover, this invention draws a character and / or a pattern with the colored ink from which a color differs with respect to the base | substrate which an image layer laminates | stacks colored ink in the said sealing body.

In addition, the present invention provides the seal of any one of the above, wherein the characters and / or patterns of the image layer can be visually recognized after each layer has been stretched by 2% or more from the state before stretching. Or it has plasticity so that a pattern may not return to the state which cannot be visually recognized.

  Further, according to the present invention, in any one of the above sealed bodies, the pigment contained in the ink forming the concealing layer has an interference property.

  According to the present invention, in any one of the above sealing bodies, an adhesive layer is laminated on the surface of the image layer opposite to the surface on which the concealing layer is laminated.

Furthermore, the sealing sheet according to the present invention is a protective material having no stretchability for preventing the sealing body from stretching on the surface on the side of the concealing layer of any of the sealing bodies so that the sealing body does not extend 2% or more. Layers are stacked.

Further, the sealing sheet according to the present invention is formed by laminating a non- stretchable release layer for preventing stretching of the sealing body so that the sealing body does not extend by 2% or more on the surface of the sealing body on the pressure-sensitive adhesive layer side. In addition, a protective layer having no stretchability for preventing the sealing body from being stretched is laminated on the surface on the side of the concealing layer so that the sealing body does not extend by 2% or more .

In the present invention, since the concealing layer is formed using an ink in which a pigment having a relatively large particle size is dispersed on the image layer, the pigment is present in a dense state in the concealing layer before stretching. The characters and / or patterns of the hiding layer are blocked by the pigment of the hiding layer and can not be visually recognized.On the other hand, after stretching, the pigment is present in the hiding layer in a sparse state, and the characters and / or patterns of the image layer are not visible. Visible clearly from the gaps in the pigment. Therefore, when the sealing body according to the present invention is used, a remarkable visual change occurs in the sealing body before and after stretching, so that it is possible to reliably detect whether the adherend is unsealed. In addition, before and after extending | stretching a sealing body, the color of a sealing body changes with the density difference of the pigment which arises in a concealment layer, and also by this, the presence or absence of opening of a to-be-adhered body is reliably detectable.

  Further, when an interference pigment is used as the pigment of the ink forming the hiding layer, the light hinders on the surface of the hiding layer, so that the hiding property on the image layer before stretching is further improved.

  In addition, since each layer is formed of a plastic material, the sealing body once stretched never returns to the original state. Therefore, the sealing body peeled off after use cannot be reused.

  Therefore, it can be said that the industrial applicability of the present invention is very high.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment.

  FIG. 1 is a sectional view showing a sealing sheet according to the present embodiment. FIG. 2 is an explanatory view showing a procedure for using the sealing sheet shown in FIG. FIG. 3 is a model diagram showing the state before and after stretching of the seal attached to the adherend. FIG. 3 (a) shows the state before stretching, and FIG. 3 (b) shows stretching. The later state is shown. FIG. 4 is a plan view showing a state before and after stretching of the sealing body attached to the adherend. FIG. 4 (a) shows a state before stretching, and FIG. 4 (b) shows stretching. The later state is shown. In these figures, reference numeral 1 denotes an adhesive layer 2 formed by laminating a pressure-sensitive adhesive and a colored ink different from the color of the ground 9 through a ground 9 formed by laminating colored ink on the adhesive layer 2. A sealing body 6 comprising: an image layer 4 in which a pattern 3 such as a pattern is drawn; and a concealing layer 5 in which an ink in which a pigment having a relatively large particle diameter is dispersed is laminated on the image layer 4; It is a sealing sheet composed of a release layer 7 laminated on the surface of the body 6 on the pressure-sensitive adhesive layer 2 side and a protective layer 8 laminated on the surface of the sealing body 6 on the side of the concealing layer 5. A notch 10 is formed on one end side of the sealing sheet 1 so as to reach the concealing layer 5 from the release layer 7 while leaving the protective layer 8.

  The pressure-sensitive adhesive layer 2 plays a role of adhering the sealing body 6 to the adherend, and is formed of a pressure-sensitive adhesive having removability so as not to remain on the adherend when the sealing body 6 is peeled off. . As the adhesive, for example, a single or mixed adhesive selected from acrylic resins, silicone resins, and rubber elastomers may be used. The pressure-sensitive adhesive may be previously processed into a sheet shape, or may be prepared for printing / coating.

  The base 9 of the image layer 4 plays a role of enhancing the color of the pattern 3. Examples of the color developing agent for the ink forming the base 9 include urethane resins, olefin resins, polyester resins, nylon resins, vinyl chloride resins, vinyl acetate resins, polyvinyl alcohol resins, epoxy resins, A synthetic resin such as acrylic resin or styrene resin, or natural or synthetic rubber may be used. Examples of the colorant for the ink that forms the base 9 include inorganic pigments, organic pigments, and dyes. The base 9 may have a pattern or the like, but is preferably plain.

  The pattern 3 of the image layer 4 is enlarged and deformed as the sealing body 6 is stretched. As the color developing agent and pigment for forming the pattern 3, the same ink as that for forming the base 9 can be used. However, when the colors of the pattern 3 and the ground 9 are the same or similar, the pattern 3 becomes inconspicuous by the ground 9. Therefore, as the ink for forming the pattern 3, an ink having a conspicuous color with respect to the ground 9 Is preferably selected. The pattern 3 may be drawn by applying ink to a portion constituting the pattern or the like, or drawn by applying ink to a portion other than the portion constituting the pattern or the like. Also good.

  The masking layer 5 plays a role of making the handle 3 of the image layer 4 visible only after stretching by utilizing the density change of the pigment before and after stretching. Examples of the color developing agent for the ink that forms the masking layer 5 include urethane resins, olefin resins, polyester resins, nylon resins, vinyl chloride resins, vinyl acetate resins, polyvinyl alcohol resins, and epoxy resins. A synthetic resin such as an acrylic resin or a styrene resin, or a natural or synthetic rubber may be used.

  The pigment of the ink forming the hiding layer 5 preferably has a particle diameter of 5 to 60 μm, more preferably 5 to 20 μm. When the particle diameter is smaller than 5 μm, it is difficult for the pigment of the masking layer to have a density difference before and after stretching. When the particle diameter is larger than 60 μm, the unevenness of the pigment appears on the surface of the masking layer 5. Further, the concentration of the pigment with respect to the ink forming the hiding layer 5 is preferably 5 to 30%, more preferably 7 to 15%. When the concentration is less than 5%, the pattern 3 of the image layer 4 can be visually recognized from the gap between the pigments of the masking layer 5 even before stretching. When the concentration is more than 30%, the pigment is formed even after stretching. Does not become sparse and the pattern 3 of the image layer 4 cannot be visually recognized, and in any case, it is difficult to confirm the change of the sealing body 6 before and after stretching.

Note that either an inorganic pigment or an organic pigment can be used as the ink pigment for forming the concealing layer 5. Examples of the inorganic pigment include pearl powder obtained by mixing mica powder and titanium oxide (TiO ₂ ) powder, glass powder mixed with alloy powder, metal powder such as aluminum powder and brass powder, acrylic resin powder and urethane. There are synthetic resin powders such as resin powders, and extender pigments such as silica powder and talc powder. The pearl powder and the synthetic resin powder may be colored.

  Further, when an ink pigment having an interference property is used as the ink pigment for forming the masking layer 5, light interferes with the surface of the masking layer 5 so that the masking property of the image layer 4 before stretching is further improved. As the pigment having an interference property, there is a pigment obtained by coating a powder such as mica powder, silica powder or aluminum oxide powder with a metal oxide such as titanium oxide, iron oxide or aluminum oxide.

  Note that each of the layers (adhesive layer, image layer, and concealing layer) constituting the sealing body 6 has plasticity, and once stretched, it does not return to its original state.

  The release layer 7 plays the role of protecting the adhesive layer 2 while preventing the sealing body 6 from being stretched before being attached to the adherend, and is formed of a non-stretchable paper or film. . Kraft paper or glassine paper may be used as the paper, and a synthetic resin film such as polypropylene film or polyethylene terephthalate film may be used as the film. In addition, in order to improve the peelability with respect to the adhesive layer 2, it is necessary to perform a peeling process on the surface of the paper or film that is in close contact with the adhesive layer 2 with a release agent such as silicone resin, wax, paraffin, etc. On the other hand, it is preferable to perform a treatment for smoothing the surface with a resin or clay prior to the peeling treatment.

  The protective layer 8 also plays a role of preventing the sealing body 6 from being stretched before being attached to the adherend, and is formed of paper or film that does not have elasticity. Examples of films include polyolefin films such as polyethylene films and polypropylene films, polyester films such as polyethylene terephthalate (PET) films, nylon films, polyimide films, acrylic films, silicone films, and fluorine films. These laminated processed material sheets can also be used. Furthermore, a paper or a film having a surface treated with a water-soluble resin such as dextrin, a silicone-based resin, a long-chain alkyl-based resin, a fluorine-based resin, wax, or the like can also be used.

  Next, the procedure for using the sealing sheet 1 according to the embodiment will be described.

  First, as shown in FIG. 2 (a), the release layer 7 is peeled off from the sealing body 6 on one side of the sealing body 6 divided into two by the notch 10 formed on one end side of the sealing sheet 1, and then the adhesive layer. 2 is exposed. Next, as shown in FIG. 2B, the seal 6 on one side is stuck so as to straddle the boundary between the main body of the adherend 11 and the lid. Finally, as shown in FIG. 2C, the protective layer 8 is peeled off from the sealing member 6 on the one side together with the sealing member 6 on the other side and attached to the adherend 11.

  Next, the state of the sealing body 6 before and after stretching will be described.

After adhering the sealing body 6 to the adherend 11, if the adherend 11 is not opened, the sealing body 6 is not stretched. In this case, the sealing body 6 in FIG. 3 and FIG. as shown in, present in the masking layer 5 in a state in which the pigment is dense, the handle 3 of the image layer 4 at all it becomes possible such have shaped on purpose visibility is blocked by the pigments of the masking layer 5. On the other hand, once the adherend 11 is opened, the sealing body 6 is stretched. In this case, as shown in FIG. 3B and FIG. The pattern 3 of the image layer 4 is enlarged and deformed along with the stretching of the image layer 4, and the pigment of the concealing layer 5 located in the stretched portion of the sealing body 6 is present in a sparse state. 3 becomes clearly visible from the gaps between the pigments of the masking layer 5.

  The expansion deformation of the handle 3 of the image layer 4 in the sealing body 6 occurs when the sealing body 6 is elongated by about 2% or more.

  The stretching of the sealing body 6 also occurs when the sealing body 6 is peeled off from the end of the adherend 11. In this case, the same phenomenon occurs in the sealing body 6 before and after stretching.

  In the present embodiment, the image layer 4 is composed of the pattern 3 and the base 9, but may be composed of only the pattern 4.

Example 1.
First, a polypropylene film having a thickness of 150 μm is prepared as a film to be used for the protective layer 8, and a pigment having a particle diameter of 5 to 20 μm in which mica powder is coated with iron oxide on a color developing agent composed of a urethane-based resin is concentrated on the film. The ink dispersed at 10% was laminated by silk screen printing to form the masking layer 5. Next, a black ink in which a pigment made of carbon is dispersed with a color developing agent made of urethane resin is laminated on the masking layer 5 by silk screen printing to form a pattern 3, and a urethane resin is applied to the pattern 3. A blue ink in which a pigment made of copper and a compound thereof was dispersed was laminated on a color developing agent made of the above by silk screen printing, and a base 9 was formed to form an image layer 4. In addition, the pattern 3 was formed by arranging a large number of characters “open” whose size of one character is 2 mm square. Finally, a tape is prepared by laminating an adhesive made of acrylic resin on the surface of a kraft paper separator, and the adhesive surface of the tape is laminated on the image layer 4 to form the adhesive layer 2 and the release layer 7. The sealing sheet 1 was created by cutting out into a predetermined shape.

  After sticking the sealing body 6 so as to straddle the boundary between the slot machine door and the main body using the obtained sealing tape 1, the door is slightly opened, and the state of the sealing body 6 before and after opening the door is visually observed. Comparative observation. As a result, the pattern 3 of the image layer 4 was concealed by the concealment layer 5 and could not be seen before the door was opened. On the other hand, after the door is opened, the color of the masking layer 5 is lightened, and the handle 3 of the image layer 4 that has been enlarged and deformed as the door is opened can be seen through the masking layer 5. As a result, the fact that the door was opened could be detected.

Comparative Example 1.
The ink for forming the masking layer 5 was changed to an ink in which a pigment having a particle size of 5 to 20 μm obtained by coating mica powder with iron oxide on a color developing agent composed of a urethane resin was dispersed at a concentration of 40%. A sealing sheet 1 was prepared in the same manner as in Example 1.

Comparative Example 2.
Example 1 except that the ink for forming the masking layer 5 was changed to an ink in which a pigment having a particle diameter of 5 to 10 μm made of aluminum was dispersed at a concentration of 40% with respect to a color developing agent made of urethane resin. A sealing sheet 1 was prepared in the same manner as described above.

  After the sealing body 6 is attached to the slot machine with the sealing tape 1 obtained in Comparative Examples 1 and 2, the door is slightly opened, and the state of the sealing body 6 before and after the door is opened. Were compared and observed visually. As a result, since there is no change in the density of the pigment of the masking layer 5 before and after the door is opened, almost no visual change appears on the surface of the sealing body 6, and the fact that the door is opened cannot be easily detected. It was.

Comparative Example 3.
Except that the ink for forming the hiding layer was changed to an ink in which a pigment having a particle diameter of 5 to 20 μm obtained by coating mica powder with iron oxide on a color developing agent composed of urethane resin was dispersed at a concentration of 3%. A sealing sheet 1 was prepared in the same manner as in Example 1.

Comparative Example 4.
In addition, except that the ink for forming the hiding layer was changed to an ink in which a pigment having a particle diameter of 70 to 80 μm made of acrylic beads was dispersed at a concentration of 30% with respect to a color developing agent made of urethane resin In the same manner as in Example 1, a sealing sheet 1 was prepared.

  After sticking the sealing body 6 to the slot machine with the sealing tape 1 obtained in Comparative Examples 3 and 4, the door is slightly opened, and the state of the sealing body 6 before and after the door is opened is shown. A comparative observation was made visually. As a result, since the pattern 3 of the image layer 4 was already visible through the masking layer 5 before the door was opened, almost a visual change appeared on the surface of the sealing body 6 before and after the door was opened. The fact that the door was opened could not be easily detected. In addition, in the sealing tape obtained in the comparative example 4, since the particle diameter was large, the adhesiveness with respect to a to-be-adhered body also fell.

  The sealing tape according to the present invention is used not only for the sealing of game machines such as slot machines and pachislot machines, but also when sealing these packages in order to prevent foreign substances from entering drugs, cosmetics, foodstuffs, etc. can do.

It is sectional drawing which showed the sealing sheet which concerns on embodiment. It is explanatory drawing which showed the use procedure of the sealing sheet shown in FIG. It is the model figure which showed the state before and behind the extending | stretching of the sealing body affixed on the to-be-adhered body. It is the top view which showed the state before and behind the extending | stretching of the sealing body affixed on the to-be-adhered body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sealing sheet 2 Adhesive layer 3 Handle 4 Image layer 5 Concealing layer 6 Sealing body 7 Release layer 8 Protective layer 9 Base 10 Notch 11 Adhered body

Claims (7)

An image layer in which characters and / or patterns are drawn with colored ink, and a concealing layer formed by laminating an ink in which a pigment having a particle diameter of 5 to 60 μm is dispersed to a concentration of 5 to 30% on the image layer Each of the layers is in a state of being densely packed so that the characters and / or patterns of the image layer cannot be visually recognized from the gaps between the pigments of the concealment layer before stretching , and the layer is stretched by 2% or more from the state before stretching. A sealing body , wherein the pigment is in a sparse state so that the character and / or pattern of the image layer can be seen from the gap of the pigment of the hiding layer later . The sealing body according to claim 1, wherein the image layer is formed by drawing characters and / or patterns with colored inks having different colors on a base formed by laminating colored inks. Each layer has plasticity so that characters and / or patterns on the image layer cannot be visually recognized from a state where characters and / or patterns on the image layer can be visually recognized after stretching by 2% or more from the state before stretching. The sealing body according to claim 1 or 2. The sealant according to any one of claims 1 to 3 , wherein the pigment contained in the ink forming the hiding layer has an interference property. The sealing body according to any one of claims 1 to 4 , wherein an adhesive layer is laminated on a surface of the image layer opposite to the surface on which the concealing layer is laminated. A protective layer having no stretchability for preventing stretching of the sealing body is laminated on the surface on the side of the concealing layer of the sealing body according to any one of claims 1 to 5 so that the sealing body does not stretch by 2% or more. Sealing sheet characterized by being made. 6. A sealing layer according to claim 5, wherein a non- stretchable release layer is laminated on the surface on the pressure-sensitive adhesive layer side so as to prevent the sealing body from extending by 2% or more and concealment. A sealing sheet comprising a layer having a non- stretchable protective layer for preventing stretching of the sealing body so that the sealing body does not stretch by 2% or more on the surface of the layer side.

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