KR20100117131A - Retroreflector label sheet and article to which retroreflector label sheet is bonded - Google Patents

Abstract

Since the present invention can determine whether or not the label sheet has been reattached by observing the surface condition, a retroreflective label sheet capable of inspecting opening confirmation, forgery, and stomach, and the retroreflective label Provide an article to which the sheet is fixed.
The retroreflective label sheet 1 is laminated on the base layer 10 and on one surface of the base layer 10 and is capable of retroreflecting the detection light in the same direction when the detection light is incident from a certain direction. (20), a pressure-sensitive adhesive layer (30) laminated on the other side of the base material layer (10) and adhered to an article, a destructive layer (40) provided on at least part of the surface of the retroreflective layer (20), and a base material layer It has the background information 50 which consists of a design, a character, etc. formed by printing on the surface of the adhesion layer 30 side of (10).

Description

RETROREFLECTOR LABEL SHEET AND ARTICLE TO WHICH RETROREFLECTOR LABEL SHEET IS BONDED}

The present invention relates to an open type retroreflective label sheet exposed to retroreflective label sheets, for example, glass beads (hereinafter collectively referred to as optical refractors), and to which the retroreflective label sheets are fixed. .

The retroreflective body uses, for example, a reflection phenomenon in which light incident on the glass beads as the reflector returns to the incidence direction, and is composed of a glass bead layer that is an optical refractor and a reflecting layer provided below it. The retroreflective material includes a closed type in which a colorless transparent resin coating layer is formed on glass beads and an open type in which glass beads are exposed.

Patent Literature 1 discloses a technique in which anti-counterfeiting is enhanced by combining a reflex reflector and a hologram. This retroreflector is used for traffic signs, under the natural light from various directions such as sunlight or illumination light, and under the directional light such as a car light, for example, the color of the retroreflector is different from each other. It is widely used in armbands and work clothes. Moreover, having special reflected light is utilized also for the prevention of counterfeiting such as gold stamps and certificates. As this anti-counterfeiting retroreflective member, the closed type retroreflective body which is easy to print is used in many cases.

Patent Literature 2 discloses a technique for making the glass bead layer and the reflective layer easily collapse, thereby making it impossible to reuse. This retroreflective body uses the point which is difficult to recover when the glass bead layer or the reflective layer of a retroreflective material collapses, and it confirms that the box or the like is opened for the purpose of preventing camouflage and tampering. Used as

Japanese Patent Application Publication No. 2000-272300 Japanese Patent Application Publication No. 2003-29012

When the retroreflective body shown in patent document 2 peels off the retroreflective seal etc. which were attached to a box etc., a glass bead layer is broken, and it cannot become reused. However, when peeling or using organic solvents, such as alcohol, at the time of peeling, the adhesive force of the adhesion layer of a retroreflective body will weaken, peeling is possible without the destruction of a glass bead layer or a reflective layer, and there exists a possibility of reusing.

The present invention has been devised in view of the above-described problems. For example, instead of detecting the collapse of the glass bead layer or the reflective layer as a retroreflective material, it is not determined whether the label sheet is reattached (reattached). This can be determined by observing the situation of the printed layer on the surface, and as a result, it is possible to confirm whether the product is unopened or already opened, and therefore whether there is a necessity to inspect whether the article is forged or camouflaged. An object of the present invention is to provide a recursive reflector label sheet which can be judged and an article to which the reflex reflector label sheet is fixed.

In order to achieve the above object, the present inventors have studied diligently to install a two-destructive layer formed of a material having a two-destructive property against frictional force on the glass beads exposed surface of the retroreflective member. In one case, it was found that this destructive layer was peeled off even with a slight force, and the present invention was completed.

That is, the retroreflective label sheet of the present invention is a recursive sheet which is laminated on one side of the base layer and the base layer and can retroreflect the detection light in the same direction when the detection light is incident from a certain direction. A reflective layer, a pressure-sensitive adhesive layer laminated on the other side of the base material layer and sticking to the article, and a destructive layer provided on at least part of the surface of the retroreflective layer, wherein the retroreflective layer includes a light refraction layer and a light refraction layer And a holding layer for keeping the surface portion exposed thereof, and a reflective layer laminated on the surface opposite to the surface portion of the light refraction layer or laminated inside the holding layer, and the destructive layer has a resistance against frictional force. It is made of a material having destructive properties.

A specific example of the optical refraction layer is a plurality of glass beads held in a state in which a part is buried in the surface of a holding layer made of a thermoplastic resin laminated on a base material layer and is tightly laid.

According to the above-described configuration, the peeling sheet is bent, the retroreflective label sheet is peeled so as not to bend, and it is adhered to the article without touching the destructive layer at all. In the case of adhering the retro-reflective label sheet in this way, the force of the force normally applied to the destructive layer formed of a substance having the destructive property against frictional force does not cause the destructive layer to collapse.

Here, in the state where no collapse occurs in this destructive layer, the article to which the retroreflective label sheet is attached or the article housed inside the article may be negated to be exchanged with the counterfeit article.

If the irregularity of exchanging the article to which the retroreflective label sheet is adhered is performed, the retroreflective label sheet is peeled off from the original and reattached to the counterfeit article. In addition, if an irregularity of exchanging a ROM or the like is performed on an article which accommodates a ROM or the like in a container body and covers it, and attaches a retro-reflective label sheet to the joint surface of the container body and the cover, the retroreflective label is replaced. The sheet is peeled off from the original and reattached to the counterfeit. At this time, if a force is inadvertently applied to the retroreflective member or inadvertently rubbed the destructive layer, the destructive layer is peeled off from the surface of the retroreflective layer.

When peeling off and peeling the retroreflective label sheet adhered to the article, a bending force is applied to the destructive layer of the retroreflective label sheet, and the destructive layer is formed of a material having a destructive property against friction. As a result, the destructive layer partially collapses and peels off. In particular, when a force for rubbing the surface of the light refraction layer of the retroreflective member is applied, the destructive layer is peeled off.

Therefore, if there is any doubt that forgery, tampering, camouflage, etc. has been performed on the genuine article, by observing the situation of the destructive layer of the retroreflective label sheet adhered to the article, it is possible to confirm the status of whether it is unopened or already opened. It is possible to detect whether forgery or camouflage has been performed from the collapse or dropping state of the tooth destructive layer or the like. When no collapse occurred in this destructive layer, it was proved that the retroreflective label sheet was not removed, that is, the retroreflective label sheet was not reattached. In addition, when there is even a slight collapse in this destructive layer, it is proved that the retroreflective label sheet was removed, that is, the retroreflective label sheet was not reattached. Therefore, by examining the presence or absence of the destructive layer on the surface of the label sheet, a force is applied to the retroreflective label sheet of the present invention, and it is possible to confirm whether or not an intentional operation is applied to the article.

According to the above-mentioned structure, the situation of whether it is unopened or already opened by observing the situation of the destructive layer applied to the surface of a retroreflective object, rather than detecting the collapse of the glass beads layer, a reflective layer, etc. of a retroreflective label sheet is detected. It can be confirmed, and accordingly, whether or not counterfeiting or camouflage has been performed can be detected.

It is preferable that the retroreflective label sheet configured as described above is formed of a transparent material having a color that is difficult to distinguish from this color when the destructive layer is transparent under natural light or the reflective layer is colored. With such a configuration, even if it is impossible to recognize that the destructive layer is formed even if it is intended to perform the irregularity of exchanging the article to which the retroreflective labeling sheet is adhered, when peeling the retroreflective labeling sheet with a fingernail or a fingertip, In many cases, the destructive layer on the surface of the sheet is rubbed. By applying a fingernail or fingertip force to the sheet surface, the collapse of the destructive layer occurs more remarkably than when the retroreflective label sheet is rolled up without contacting the destructive layer. Thus, since the destructive layer is significantly collapsed or dropped, it can be more clearly confirmed that it is attached again to the retroreflective label sheet.

In order to investigate the presence or absence of a destructive layer on the surface of the label sheet, strong light, for example, light through an optical lens or light having directivity is irradiated to the retroreflective label sheet. Then, since the light incident on the light refraction layer is refracted and returned to the portion of the light refraction layer that is not covered with the destructive layer, the color of the reflection layer is emphasized, and the color appears more vivid than the color seen under natural light. On the other hand, if there exists a destructive layer, the light refracted by the optical refraction layer and reflected by the reflective layer will be deflected by the destructive layer. Therefore, contrast occurs between the region where the destructive layer exists and the region where the destructive layer does not exist. In this way, it is possible to irradiate strong light on the retroreflective material to check the presence or absence of the destructive layer, and based on the result, it is possible to determine whether or not a reuse operation has been performed.

Therefore, according to the present invention, collapse is caused in the destructive layer by scanning the detection light by a reader that emits the detection light, and displaying a pattern of a transparent material or comparing and recognizing it with a pattern stored in the reader in advance. It is possible to examine the presence or absence of a destructive layer on the surface of the label sheet by an easier inspection without taking an inspection method for determining whether or not there is.

It is preferable that the retroreflective label sheet having the above-described configuration has a peeling disintegration layer that is peeled and collapsed by being peeled from the state adhered to the article between the substrate layer and the adhesive layer, and remains on at least a part of the article. With such a configuration, an attempt is made to replace the article to which the retroreflective label sheet is adhered, and at the time when the retroreflective label sheet is peeled off, the peeling collapse layer is peeled and collapsed, and the retroreflective label sheet is not recoverable. It can be seen that the retroreflective label sheet which has been formed is not smooth at first glance, but is irregular. In particular, the presence of the retroreflective layer causes the label sheet to harden and a strong force is required to peel off. Therefore, peeling collapse layer also becomes easy to peel collapse. That is, confirmation of whether it is unopened or already opened is easily proved by visually inspecting the smoothness of the retroreflective label sheet in addition to the detection of the destructive layer. Moreover, in the structure which has a peeling disintegration layer, since the total thickness of a label sheet becomes large, it is hard to bend easily and it is difficult to peel easily. Therefore, in order to peel a retroreflective label sheet, it is necessary to apply a larger force, and when this force acts on this destructive layer, this destructive layer surely collapses and falls out. Therefore, the effect of anti-counterfeiting and camouflage is high.

In the retroreflective label sheet having the above-described configuration, it is preferable that the reflective layer generates a structural color due to interference of light. The structural color is a color in the case where the light reflected from the upper surface of the film having a thin wavelength of light interferes with the light reflected from the lower surface, and various colors are generated depending on the viewing angle. In order to form a reflective layer having a structural color, for example, (1) a metal compound is formed as a single layer of a film thin as a wavelength of light (390 nm to 770 nm), and (2) a film as thin as a wavelength of light of a metal compound is formed into a multilayer. And (3) to cause interference and scattering of light due to fine grooves, projections, and fine particles. With such a configuration, the background color becomes a camouflage coating, and the destructive layer is not easily seen, and it is more difficult for a person who intends to perform the irregularity of exchanging the article adhered to the retroreflective label sheet to notice the existence of the destructive layer. . Therefore, the effect of anti-counterfeiting and camouflage is high.

As for the retroreflective label sheet of the above-mentioned structure, it is preferable that the notch is formed in the side of a retroreflective layer. With such a configuration, the retroreflective label sheet is left on the release sheet, and when the remaining portion of the label sheet is peeled off the release sheet, the force applied to the retroreflective label sheet is dispersed, and the drying of the solvent contained in the adhesive from the notch is reduced. It is accelerated and since a seal | sticker adheres strongly to a peeling sheet, it can prevent peeling together. In addition, when attempting to peel off the retroreflective label sheet adhered to the article in order to deny it, it is cut out from the notch, which propagates to the peeling disintegration layer and becomes impossible to recover. It is impossible to carry out, and the effect of anti-counterfeiting and camouflage is high.

It is preferable that the retroreflective label sheet having the above-described configuration is transparent of the retroreflective layer, and the background information having a design or a character formed on the surface of any one of the base material layers. With such a configuration, since the background information is visible under natural light, the retroreflective label sheet cannot easily know the existence of the surface of the destructive layer. Therefore, when attempting to negate, the surface of the retroreflective label sheet frictionally collapses. Increases the probability of making, the effect of anti-counterfeiting, camouflage is high.

According to the present invention, for example, instead of detecting the collapse of the glass bead layer or the reflective layer as the retroreflective member, it is possible to determine whether the label sheet is reattached by observing the situation of the printing layer applied to the surface of the retroreflective member. Can be. As a result, it is possible to check the situation as to whether it is unopened or already opened, and to provide a recursive reflector label sheet which can determine the necessity of inspecting whether the article is forged or camouflaged. It is possible to provide an article to which a reflector label sheet is fixed. Further, according to the present invention, since it is difficult to make a counterfeit product of the retroreflective label sheet, this fact is effective in preventing forgery and camouflage.

1 is a schematic cross-sectional view showing a retroreflective label sheet according to a first embodiment.
2 is a schematic cross-sectional view showing a retroreflective label sheet according to a second embodiment.
3 is a schematic cross-sectional view showing a retroreflective label sheet according to a third embodiment.
4 is a schematic cross-sectional view showing a retroreflective label sheet according to a fourth embodiment.
5 is a schematic cross-sectional view showing a retroreflective label sheet according to a fifth embodiment.
6 is a schematic cross-sectional view showing a retroreflective label sheet according to a sixth embodiment.
7 is a schematic cross-sectional view showing a retroreflective label sheet according to a seventh embodiment.
8 is a schematic cross-sectional view showing a retroreflective label sheet according to an eighth embodiment.
9 is a top view of a retroreflective label sheet according to a ninth embodiment.
FIG. 10: is a schematic sectional drawing which concerns on 9th Embodiment and shows one form which provides a printing protective layer in the retroreflective label sheet which concerns on 1st Embodiment.
It is a schematic sectional drawing which concerns on 9th Embodiment and shows another form which provides a printing protective layer in the retroreflective label sheet which concerns on 1st Embodiment.
Fig. 12 is a plan view showing the state of the sheet before applying the circular half cut to the retroreflective label sheet layer laminated on the release sheet to align and form the retroreflective label sheet of the present invention and peeling off the remaining portion of the label sheet.
It is typical sectional drawing which showed the state which peeled the remainder of a label sheet.
It is a figure which shows the state which used the label sheet as a seal | sticker of the certificate attached to the accommodating case of a control part.
It is a figure which shows the state which used the label sheet sealed so that it may be covered on the joint surface of the accommodating case main body and cover of a control component.
Fig. 16 is a view showing a state in which a label sheet is adhered to a control board or case side such as a CPU.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the retroreflective label sheet of this invention is described in detail with reference to drawings.

(First embodiment)

As shown in FIG. 1, when the retroreflective label sheet 1 according to the first embodiment is laminated on one surface of the substrate layer 10 and the substrate layer 10 and the detection light is incident from a certain direction, At least one of the surface of the retroreflective layer 20 capable of retroreflecting the detection light in the same direction, the adhesive layer 30 laminated on the other side of the base layer 10 and adhered to the article, and the retroreflective layer 20. It has the destructive layer 40 provided in a part, and the background information 50 which consists of a design, a character, etc. formed by printing on the surface of the adhesion layer 30 side of the base material layer 10. As shown in FIG. In this embodiment, it is comprised so that the background information 50 may be seen from the front side of the retroreflective label sheet 1. That is, the retroreflective layer 20, the destructive layer 40, and the base layer 10 are configured to be transparent. The background information 50 may be provided on the surface of the retroreflective layer 20 side of the base layer 10. When originality is given to the reflector label sheet 1, a specific design, trademark, or house mark may be used for the background information 50.

The base material layer 10 is a layer which supports the retroreflective layer 20, and can use films, such as polyester resin, polyolefin resin, cellulose resin, and acrylic resin.

The retroreflective layer 20 is opposite to the light refractor layer 21, the holding layer 22 which holds the light refractor layer 21 in an exposed state, and the surface portion of the light refractor layer 21. It consists of a reflective layer 23 laminated on the surface.

In the present embodiment, the light refraction layer 21 is made of glass beads. The glass beads 21 are embedded so that a part of them is exposed on the surface side of the holding layer 22. In the present embodiment, the reflective layer 23 is colorless or colored and transparent. The glass beads 21 are spheres for refracting incident light, and the lower half is generally buried in the holding layer 22, and the other upper half is exposed to air. The material of the glass beads 21 is not particularly limited, it is possible to use a SiO ₂ -TiO ₂ type glass-BaO, BaO-ZnO-TiO ₂ system glass. The refractive index should just be in the range of 1.9-2.2 normally used. In this embodiment, the refractive index of the glass beads 21 is around 1.9. It is preferable that the particle diameter of the glass beads 21 shall be 38 micrometers-50 micrometers, or 45 micrometers-90 micrometers. Although the glass beads 21 are in close contact with each other in an aligned state, it is preferable to lay them tightly, but the glass beads 21 may be slightly spaced apart from each other. In order to provide originality to the reflector label sheet 1, the glass beads 21 may be missing with respect to the circular or heart-shaped area with a fixed pitch.

The holding layer 22 is a layer which holds the glass beads 21 and adheres and holds the base material layer 10 and the glass beads 21. The holding layer 22 has good adhesiveness with the glass beads 21 and has a high transparency, for example, a polystyrene resin, a polyester resin, an acrylic resin, a silicone resin, a fluorine resin, and a polyamide resin. It is preferable to apply thermoplastic resins such as polyvinyl alcohol resin, polyurethane resin, polyolefin resin, polycarbonate resin and polysulfone resin.

The reflective layer 23 is a layer which is provided along the lower surface side of the glass beads 21, that is, along the side opposite to the surface on which the glass beads 21 are exposed, and reflects light incident on the glass beads 21. The reflective layer 23 is a colorless or colored thin film. Here, it is employed to generate a structural color by using interference of light by irradiation of natural light. When the originality is imparted to the reflector label sheet 1, it is also achieved by giving the originality to the structural color of the reflective layer 23. The reflective layer 23 can be formed using aluminum in addition to a metal compound, for example, titanium oxide, bismuth oxide, zirconium oxide, silicon oxide, zinc oxide, zinc sulfide and mixtures thereof.

The reflective layer 23 which produces | generates a structural color can be manufactured, for example by alternately laminating | stacking the metal compound with high refractive index and low compound in the visible range shown below.

[Metal Compounds with High Refractive Index]

Zinc Sulfide (ZnS): 2.40

Titanium oxide (TiO ₂ ): 2.71 (rutile structure), 2.52 (anatase structure)

Indium oxide (In ₂ O, In ₂ O ₃ ): 2.00

Tin Oxide (SnO, SnO ₂ ): 1.90

Zirconium Oxide (ZrO ₂ ): 2.40

Alumina (Al ₂ O ₃ ): 1.76

Magnesium Oxide (MgO): 1.74

[Metal Compounds with High Refractive Index]

Calcium Fluoride (CaF ₂ ): 1.44

Magnesium Fluoride (MgF ₂ ): 1.38

Sodium Fluoride (NaF): 1.29

Silicon Oxide (SiO ₂ ): 1.46

The layer thickness of the reflective layer 23 is preferably selected to be in the range where the light reflected on the upper surface of the film and the light reflected on the lower surface interfere, and in the case of a multilayer, 300 to 600 nm. If the total layer thickness of the multilayer is thinner than 300 nm, the interference light is indistinct, and if it is thicker than 600 nm, the desired structural color cannot be obtained, or the color of the appearance becomes cloudy. It is preferable that the thickness of one layer exists in the range of 100-200 nm. In addition, it is preferable to perform a gradation process within the range of one layer thickness. In order to achieve a structural color in a single layer, a thin film of the above-described metal compound may be used. In the case of a single layer, the film thickness is preferably in the range of 100 to 600 nm, and the gradation treatment may be performed within the range of this layer thickness.

It is preferable to form the adhesion layer 30 using the adhesive with high transparency. For example, there exist a polyester adhesive, an acrylic adhesive, a urethane type adhesive, and a vinyl oxide type adhesive. And the peeling sheet (not shown) which peels before use and exposes the adhesion layer 30 may be further attached to the lower surface of the adhesion layer 30.

The destructive layer 40 is made of a material having destructive properties against frictional force. It is preferable that the thickness of this substance is less than 0.5-5 micrometers, and it is more preferable that it is the range of 1-3 micrometers or less. An ink can be used for the bi-destructive layer 40 by the substance which has the destructive property with respect to a frictional force. It is preferable to use only a dye as a component of this ink, for example. Examples of the binder resin include an aqueous ink containing a water-soluble polymer or an emulsion resin. As the water-soluble polymer, for example, polyvinyl alcohol, polyethylene oxide, sodium polyacrylate can be used, and as the emulsion resin, vinyl acetate emulsion, ethylene vinyl acetate emulsion, acrylic emulsion, acrylic styrene emulsion, vinylidene chloride emulsion can be used. have. As this ink, for example, there is an ink which peels off easily when writing letters on a board with a marker and rubbing after drying. The destructive layer 40 can be performed by various printing methods. In this embodiment, the destructive layer 40 is further formed of a transparent material having a color that is difficult to distinguish from this color when the transparent layer or the reflective layer is colored under natural light.

The background information 50 is made of a retroreflective layer transparent and having a design or a character on the surface of any one of the base layer 10. Under natural light, since the background information 50 is visible, a design for preventing the destructive layer 40 from being seen well can be adopted, or a mark or a trademark that has proof power can be adopted. When strong light is irradiated to the retroreflective label sheet 1, the transparent retroreflective layer 20 reflects the entire surface by the retroreflective function, and at this time, the background information 50 is not visible. Therefore, if a part of the reflective layer 23 of the retroreflective layer 20 is removed so that a small design without glass beads is present, the background information 50 is shown on the part missing from the front reflection, thereby concealing advertisements or other displays. It can be used as.

According to the above structure, the destructive layer 40 does not collapse by the force normally applied to the destructive layer formed of the ink having the destructive property against frictional force. The release sheet is bent, the retroreflective label sheet is peeled not to bend, and the adhesive layer is adhered to the article so as not to be strongly rubbed. When it is desired to perform the irregularity of exchanging the article to which the retroreflective label sheet is adhered, the retroreflective label sheet is peeled off from the original and reattached to the counterfeit article. Therefore, by observing the situation of the tooth destructive layer, it is possible to confirm the status of whether it is unopened or already opened, and thus it is possible to detect whether forgery or camouflage has been performed.

The retroreflective label sheet 1 of the above-described first embodiment is configured such that the background information 50 is visible through the destructive layer 40, the retroreflective layer 20, and the base layer 10 under natural light. The reflective layer 23 may be made opaque. In this case, the background information 50 is not provided. In addition, although the destructive layer 40 was formed with transparent ink, you may form with opaque ink. In this case, it is preferable to color the reflective layer 23 and to form the destructive layer 40 with a transparent ink having a color that is difficult to distinguish from this color.

(2nd embodiment)

As shown in FIG. 2, the retroreflective label sheet 1A according to the second embodiment is laminated on one side of the base layer 10 and the base layer 10, is transparent, and detects light from a predetermined direction. A surface of the retroreflective layer 20A capable of retroreflecting the detection light in the same direction, a pressure-sensitive adhesive layer 30 laminated on the other side of the base layer 10 and adhered to an article, and a surface of the retroreflective layer 20A It has the destructive layer 40 provided in a part of this, and the background information 50 which consists of a design, a character, etc. on the surface of the adhesion layer 30 side of the base material layer 10. As shown in FIG.

The retroreflective layer 20 includes an optical refractor layer 21 in which glass beads are laid tightly, a holding layer 22 which holds the optical refractor layer 21 in an exposed state, and a light refractor layer 21. The reflective layer 23A is laminated on the surface on the side opposite to the surface portion of or is laminated on the inside of the holding layer 32. The destructive layer 40 is formed of an ink having a destructive property against frictional force, and is formed of a transparent ink having a color that is difficult to distinguish from this color when it is transparent under natural light or when the reflective layer is colored. .

In the retroreflective label sheet 1A, the reflective layer 23A is different from the first embodiment. The reflective layer 23A is provided at the focal position of the glass beads 21, and the focal position is determined by the refractive index of the glass beads 21. In the present embodiment, since the refractive index of the glass beads 21 is around 2.2, the reflective layer 23A is spaced apart from the glass beads 21 and embedded in the holding layer 22.

Since the other structure is the same as that of 1st Embodiment, the code | symbol of a corresponding component is attached | subjected and description is abbreviate | omitted. Effects and effects are also the same as in the first embodiment.

(Third embodiment)

As shown in FIG. 3, the retroreflective label sheet 1B according to the third embodiment is laminated on one side of the base layer 10 and the base layer 10, and is transparent and detects light from a predetermined direction. A retroreflective layer 20 capable of retroreflecting the detection light in the same direction, an adhesive layer 30 laminated on the other side of the base layer 10 and adhered to the article, and a base layer 10 adhered to the article. It is designed on the surface of the peeling collapse layer 60 formed between the layers 30, the destructive layer 40 provided on a part of the surface of the retroreflective layer 20, and the adhesive layer 30 side of the base material layer 10. Or background information 50 made of characters or the like. The retroreflective layer 20 is the same structure as 1st Embodiment, and the holding layer 22 which hold | maintains the optical refraction layer 21 in which glass beads were spread | dough, and the optical refraction layer 21 in the state which the surface part was exposed. ) And a reflective layer 23 laminated on the surface opposite to the surface portion of the light refraction layer 21 or laminated inside the holding layer 32.

This retroreflective label sheet 1B differs from the first embodiment in that it has a peeling disintegration layer 60. The peeling disintegration layer 60 is a layer formed by laminating a plurality of thin layer films with weak adhesive force, and when the shear force from the side surface is applied, the interfacial peeling occurs easily and dissociates between the layer films. . Here, the part which dissociates between layer films exists in the part except the perimeter of a label sheet.

Since the other structure is the same as that of 1st Embodiment, the code | symbol of a corresponding component is attached | subjected and description is abbreviate | omitted. Effects and effects are also the same as in the first embodiment.

The peeling disintegration layer 60 is a layer which peels and disintegrates by remaining from the state where the retroreflective label sheet 1B adheres to the article (not shown) and remains in at least a part of the article (not shown).

According to this structure, when the article which adhere | attached the retroreflective label sheet was attempted to perform the irregularity, it turns out that a retroreflective label sheet becomes impossible to recover when the retroreflective label sheet is peeled off. In the case of reattachment, the surface of the retroreflective label sheet 1B is not smooth and reliably visible, as well as the collapse and dropping of the destructive layer 40, so that the destructive layer 40 By observing the situation of the layer and the peeling collapse layer 60, it is possible to confirm the situation of whether it is unopened or already opened, and thus it is possible to detect whether forgery or camouflage is being performed.

(4th Embodiment)

As shown in FIG. 4, the retroreflective label sheet 1C according to the fourth embodiment is laminated on one side of the base layer 10 and the base layer 10, and is transparent and detects light from a constant direction. A retroreflective layer 20A capable of retroreflecting the detection light in the same direction, a pressure-sensitive adhesive layer 30 laminated on the other side of the base layer 10 and adhered to an article, and a base layer 10 It is designed on the surface of the peeling collapse layer 60 formed between the layers 30, the destructive layer 40 provided on a part of the surface of the retroreflective layer 20A, and the adhesive layer 30 side of the base material layer 10. Or background information 50 made of characters or the like.

The retroreflective layer 20 is the same structure as 2nd Embodiment, and the holding layer 22 which hold | maintains the optical refraction layer 21 in which glass beads were spread | diffused tightly, and the optical refraction body layer 21 in the state which the surface part was exposed. ) And a reflective layer 23A laminated on the surface portion of the base layer 10.

This retroreflective label sheet 1C differs from the second embodiment in that the peeling disintegration layer 60 is provided. Since the other structure is the same as that of 2nd Embodiment, the code | symbol of a corresponding component is attached | subjected and description is abbreviate | omitted. Actions and effects are the same as in the third embodiment.

(5th-8th Embodiment)

5th-8th embodiment is shown to FIGS. 5-8. In the retroreflective label sheet 1D of the fifth embodiment shown in FIG. 5, the light refraction layer 21D of the retroreflective layer 20D is different from the first embodiment. In the retroreflective label sheet 1E of the sixth embodiment shown in FIG. 6, the light refraction layer 21E of the retroreflective layer 20E is different from the second embodiment. In the retroreflective label sheet 1F of the seventh embodiment shown in FIG. 7, the light refraction layer 21F of the retroreflective layer 20F is different from the third embodiment. In the retroreflective label sheet 1G of the eighth embodiment shown in FIG. 8, the light refraction layer 21G of the retroreflective layer 20G is different from the fourth embodiment.

These optical refraction layers 21D to 21G are not molded of glass beads, but molded optical bodies in which convex spheres are arranged on both surfaces thereof, and substantially the same function as the retroreflective layer in which glass beads are aligned and laid tightly can be obtained. Since the other structure is the same as that of the corresponding embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

(Ninth embodiment)

Fig. 9 shows a top view of the retroreflective label sheet according to the ninth embodiment, and the retroreflective label sheet is the retroreflective label sheets 1, 1A to 1G according to the first to eighth embodiments described above. On the other hand, the print protection layer 70 is provided around the surface of the retroreflective layer. FIG. 10 shows a case where the destructive layer 40 of the retroreflective label sheet 1 according to the first embodiment shown in FIG. 1 reaches the label sheet periphery and is formed. In this retroreflective label sheet 1, FIG. The print protection layer 70 is provided on the destructive layer 40 so as to overlap. FIG. 11 shows a case where the destructive layer 40 of the retroreflective label sheet 1 according to the first embodiment shown in FIG. 1 is formed spaced apart from the periphery of the label sheet, and this retroreflective label sheet 1 is shown. In this case, the print protection layer 70 is provided on the retroreflective layer 20 so as to overlap. The print protection layer 70 can be provided similarly to the retroreflective label sheets 1 and 1A to 1G according to the second to eighth embodiments.

The printing protective layer 70 is effective for preventing the destructive layer 40 from collapsing due to an applied force or the like, when the sheet provided with the retroreflective label sheet in an arrangement state on the peeling sheet is superimposed upon conveyance or the like. . By forming the print protective layer 70, it is possible to avoid inadvertent contact with the destructive layer 40 when the rightful operator handles it, so that the forgery behavior and the camouflage detection accuracy can be improved.

The print protection layer 70 is preferably a printing ink or a thermoplastic resin. As the thermoplastic resin, for example, polystyrene resin, polyester resin, acrylic resin, silicone resin, fluorine resin, polyamide resin, polyvinyl alcohol resin, polyurethane resin, polyolefin resin, polycarbonate resin, poly Sulfone resins and the like. By forming the print protective layer 70, the destructive layer 40 increases in thickness and does not easily collapse. It is preferable that the printed protective layer 70 has a thickness of 5 µm or more in combination with the destructive layer 40.

Example 1

Translucent letter “Sample” by letterpress printing, using transparent ink made of FD Carton ACE Matte OP, manufactured by Toyo Inky, on the surface (exposed surface of glass beads) of the retroreflector whose red color is seen when light is reflected on the reflective layer. '' Formed a destructive layer. This destructive layer was made into two types of thickness of 3 micrometers and 5 micrometers.

The retroreflective layer having each bi-destructive layer having a different layer thickness was punched into a circle having a diameter of 1 cm and attached to the box as a retroreflective label sheet. Although the letter "Sample" of this retroreflective label sheet is hard to see under natural light, the letter "Sample" appears when the strong light is irradiated. Subsequently, the seal was peeled off from the upper body, adhered to the upper body again, and irradiated with strong light to observe the seal. In the case of a seal having a two-layer destructive layer having a thickness of 3 µm, the letters of "Sample" were erased, and in the area where the letters were erased, the letters of "Sample" appeared to appear in an erased state that was hardly readable. On the other hand, in the case of a seal having a two-layered destructive layer having a thickness of 5 µm, letters of "Sample" appeared and appeared. And this observation was repeated 20 times, but all were the same result.

[Example 2]

Colored transparent ink of a color tone different from the color tone seen when the light is reflected on the reflective layer on the glass beads of the retroreflective material (the color visible when the light is reflected on the reflective layer) [FD Carton ACE Matte OP + Sakura by Toyo Inky The text "Sample" was printed by Nomi-kagaku Microlith Blue (3% of the total volume)].

The retroreflective member having the colored bi-destructive layer thus obtained was punched into a circle having a diameter of 1 cm and adhered to the box as a retroreflective label sheet.

In the same manner as in Example 1, a peeling test of the seal was performed. Although the letters of "Sample" were erased to some extent under natural light, the color of the reflective layer was emphasized when strong light was irradiated, and it was clearly confirmed that the letters of "Sample" were erased. And this observation was repeated 20 times, but all were the same result.

Example 3

By typography with warm cloor colored transparent ink on the surface (exposed surface of glass beads) of the retroreflector (the so-called structural color that changes to rainbow color depending on the viewing angle) when light is reflected on the reflecting layer. The two fracture layer of the letter "Sample" was formed in thickness of 3 micrometers.

The retroreflective member having a bi-destructive layer was punched into a circle having a diameter of 1 cm and attached to the box as a retroreflective label sheet. The letter "Sample" of this retroreflective body was a degree which can barely be confirmed under natural light. When irradiated with strong light, the character "Sample" could not be confirmed when the structural color of the reflective layer of the retroreflective body was seen as a warm color system, and was confirmed when the reflective layer was inclined and the reflective layer was seen as a color tone other than the warm color system. Subsequently, when peeling test of a seal | sticker was performed and strong light was irradiated and observing a seal | sticker, when the structural color of the reflective layer was seen as a hue other than a warm color system in the area | region in which the letter of "Sample" was erased, it appeared in the state erased. And this observation was repeated 20 times, but all were the same result.

Example 4

On the glass beads of the retroreflective material of Example 3, a star-shaped mark was applied with a warm color-based color transparent ink (Toyo Inky FD Carton ACE Matt OP Nice + Sakura-no-Miyakagaku Microless Red (3% of the total amount)). In addition, the letter "Sample" was printed by thickness of 3 micrometers with the transparent ink used in Example 1, respectively.

The obtained retroreflective object having two types of printing was punched into a circle having a diameter of 1 cm and attached to the box as a retroreflective label sheet. In the retroreflective label sheet, only the marks of molding were seen under natural light. Next, the peeling test of the seal | sticker was done.

As a result of observing the seal by irradiating strong light, the color of the structure was emphasized, and in the region where the letters of "Sample" were erased, the letters of "Sample" appeared in an almost unreadable state. In addition, when the structural color of the reflective layer was seen as a color tone other than a warm color system, the mark of the molding appeared to be erased. And this observation was repeated 20 times, but all were the same result.

Next, the manufacturing method of the retroreflective label sheet of the present invention will be briefly described. Here, the retroreflective label sheet having the two fractured layers on the glass beads will be described.

The manufacturing process of a retroreflective label sheet is basically comprised of the fixing process of a glass bead, the formation process of a reflection layer, the attachment process of a base material layer, and a film peeling process. Hereinafter, a specific manufacturing method will be described.

(1) Preparation of Retroreflective Label Sheet with Reflective Layer Single Layer

Polyethylene resin is apply | coated to the upper surface of films, such as PET film, and it arrange | aligns on it, sprays glass beads, and dries. Thereby, the lower hemisphere of the glass beads is embedded in the polyethylene resin (fixing step of the glass beads). Next, a thin film of a metal compound is deposited on the exposed upper surface of the glass beads within the range of 100 to 600 nm (the process of forming the reflective layer). And a polyethylene resin is apply | coated to the base material layer laminated | stacked through the adhesive layer on the peeling sheet, this was made into a holding layer, this holding layer was made to adhere to the said reflection layer (base layer attachment process), Finally, films, such as PET film, The polyethylene resin is peeled off (film peeling step).

Since there are irregularities on the surface of the glass beads, variations occur in the thickness of the thin film of the metal compound, resulting in gradation.

(2) a retroreflective label sheet having a multilayer reflective layer

Polyethylene resin is apply | coated to the upper surface of films, such as PET film, glass beads are sprayed on it, it is made to dry, and the lower hemisphere of glass beads is buried in polyethylene resin (fixing process of glass beads). Next, a thin film (range of 100-200 nm) of a plurality of metal compounds is deposited on the exposed glass beads upper surface to form a multilayer reflective layer (reflective layer forming step). And a polyethylene resin is apply | coated to the base material layer laminated | stacked through the adhesive layer on the peeling sheet, this was made into a holding layer, this holding layer was made to adhere to the said reflective layer (base layer attachment process), and finally, films, such as PET film, And polyethylene resins (film peeling process).

When the retroreflective label sheet having a destructive layer on the obtained glass beads is made of a specific shape, for example, a circular label sheet, the sheet in which only the circular label sheet 1 is aligned on the release sheet 80 is (See FIG. 12). The label sheet 1 of the retroreflective label sheet 1 remaining only on the release sheet 80 forms the label sheet-shaped notches 91 on the glass beads 21, and forms only the circular label sheet remaining portion 93. It can obtain by peeling.

However, when peeling off the label sheet remainder 93 (removing unnecessary portions of the seal), accompanying peeling (hereinafter referred to as "combined peeling") occurs between the label sheet remainder 93 and the label sheet 1. In order to prevent an accompanying peeling, as shown in FIG. 12, the notch 91 which straddles the label sheet remainder 93 is formed in the side of the label sheet 1. The notches 91 are formed diagonal to each other at the periphery of the label sheet 1. This notch 91 is a half cut from the surface of the retroreflective label sheet to the retroreflective layer 20.

By having the notch 91 which spans such a retroreflective label sheet 1 and the label sheet remainder 93, drying of the solvent contained in the adhesive from the notch is promoted to peel off the label sheet remainder 93. When peeling from the board | substrate 80, the force applied to the retroreflective label sheet 1 is disperse | distributed, and since the retroreflective label sheet 1 is adhere | attached strongly to the peeling board 80, accompanying peeling can be prevented. Moreover, the notch 91 has the property of being easily torn against reattachment of the retroreflective label sheet 1, and has no recoverability against reattachment, and thus has an opening confirmation effect.

As the blade for punching the retroreflective label sheet 1 by forming the notch 91 and the label punching cut 92, for example, a thomson blade, a rotary blade, or the like can be used.

Next, an article to which any one of the first to ninth retroreflective label sheets is fixed will be described.

The article to which the retroreflective label sheet is fixed may be an anti-counterfeiting article or a receptor article containing the anti-counterfeiting article. For example, in an organic group such as a pachinko group or a pachislot group, the probability of pachinko beads appearing is recorded in a PROM or the like, and the PROM and the like are stored in a box so that they cannot be easily touched. . In order to prevent fraud that increases the probability of pachinko beads coming out by exchanging the PROM, forgery and camouflage are carried out by providing a reflex reflector label sheet in the PROM itself or in a box accommodating the PROM. It may be determined whether there is a need to examine the system.

When the retroreflective label sheet is adhered to the PROM itself, it is necessary to replace the wrong PROM or the like and attach the retroreflective label sheet again. In addition, when the retroreflective label sheet is bonded to cover the joint surface of the box body and the cover housing the PROM or the like, the retroreflective label sheet is peeled off, the cover is opened, the wrong PROM is replaced, and the box body and cover are again replaced. It is necessary to attach the retroreflective label sheet to cover the joint surface of the wah.

In the retroreflective label sheet of the present invention, when the reattachment is performed, the destructive layer is destroyed. In addition, when there exists a peeling disintegration layer, since a peeling disintegration layer also peels and collapses, it turns out that reattachment was performed immediately. Thus, it is possible to check the situation as to whether it is unopened or already opened, or to check whether the goods have been exchanged.

Examples of the article to which the retroreflective label sheet is attached include a control substrate housed in a substrate case of a control substrate unit of an organic group, an electronic component such as a substrate case, a PROM, and a seal for a certificate attached to the case.

In FIG. 14, the seal 102 for the certificate 101 attached to the case 101 which accommodates the control component used for the illegal exchange is shown. The retroreflective label sheet 102 is used for the seal 102. As shown in this example, the background information 50 of the retroreflective label sheet 102 may be used as proof contents, and the seal 102 may use a normal seal.

FIG. 15 shows that the retroreflective label sheet 106 is attached as a seal so as to be covered on the joint surface of the case main body 104 and the cover 105 which accommodates the control component to be subjected to an illegal replacement.

In FIG. 16, a first retroreflective label sheet 110 is attached to a control board 109 including a CPU 107, a ROM 108, and the like, which is subjected to an illegal exchange, and the control board is attached to the lower case 111. 109 is mounted, the second retroreflective label sheet 112 covers the upper case 113 attached to the side surface, and the lower case 111 and the upper case 113 are connected by bolts. In this example, the second retroreflective label sheet 112 is located between the side surface of the lower case 111 and the side surface of the upper case 113 in an assembled state. In this example, the first retroreflective label sheet 110 may be attached onto the CPU 107.

[Industrial Availability]

By using the retroreflective label sheet having the destructive layer according to the present invention as, for example, an anti-opening seal of the substrate storage case of the organic group, if it is unsealed, it will leave a trace. It is available.

1, 1A-1G: retroreflective label sheet 10: base material layer
20, 20A to 20G: retroreflective layer 21: glass beads
21D to 21G: optical refractor layer 22: holding layer
23, 23A: reflective layer 30: adhesive layer
40: Destroyed Layer 50: Background Information
60: peeling collapse layer 70: printing protective layer
80: peeling sheet 91: notch
92: punching label cut 93: remaining label sheet

Claims (11)

Base layer;
A retroreflective layer laminated on one surface of the base layer and capable of retroreflecting the detection light in the same direction when the detection light is incident from a predetermined direction;
An adhesive layer laminated on the other side of the base layer and adhered to the article; And
Bi-destructive layer provided on at least a part of the surface of the retroreflective layer
Including,
The retroreflective layer includes a light refraction layer, a holding layer for keeping the light refraction layer in an exposed state, and a surface opposite to the surface portion of the light refraction layer, or inside the holding layer. With a reflective layer laminated on
The retroreflective label sheet is formed of a material having two destructive properties against frictional force. The method of claim 1,
The retroreflective label sheet is formed of a transparent material having a color that is difficult to distinguish from the color when the back layer is transparent under natural light or when the reflective layer is colored. The method of claim 1,
A retroreflective label sheet having a peeling collapse layer remaining between at least a portion of the article by being peeled and collapsed by being peeled from a state adhered to the article between the base layer and the adhesive layer. 4. The method according to any one of claims 1 to 3,
The retroreflective label sheet, wherein the reflective layer produces a structural color by interference of light. The method according to any one of claims 1 to 4,
The retroreflective label sheet having a notch on the side of the retroreflective layer. The method according to any one of claims 1 to 5,
The retroreflective label sheet is composed of a plurality of glass beads in which the optical refraction layer is partially embedded in the surface of the holding layer made of the thermoplastic resin laminated on the base material layer and is in a tightly laid state. The method according to any one of claims 1 to 6,
The retroreflective label sheet, wherein the retroreflective layer is transparent and background information comprising a design or a character is formed on a surface of any one of the base layers. The method according to any one of claims 1 to 7,
The retroreflective label sheet is a anti-counterfeiting seal. The article to which the retroreflective label sheet according to any one of claims 1 to 8 is fixed. 10. The method of claim 9,
An anti-counterfeiting article or a receptacle article containing the anti-counterfeiting article, wherein the retroreflective label sheet is secured. 10. The method of claim 9,
An article formed by combining a plurality of members, wherein the retroreflective label sheet is secured to be covered by seams of the plurality of members.

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