Display sheet, member with display sheet, and sheet member

Abstract

To make it possible to distinguish a properly pasted display sheet from a repasted base material of the display sheet.SOLUTION: A display sheet 10 provided herein has a first surface 11 and a second surface 12 opposite the first surface 11. The display sheet 10 comprises a display body 15, base material 21, pseudo adhesive layer 23, and adhesive layer 25 arranged in the described order from the first surface 11 toward the second surface 12. The adhesive layer 25 is colored.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a display sheet, a member with a display sheet, and a sheet member. [Background technology]

[0002] A display sheet is known that includes a display body such as a label as described in Patent Document 1 and a substrate that supports the display body. The display body is one that is difficult to imitate. By displaying the display body, it is possible to show that the adherend to which the display sheet is attached or the contents contained in the box-shaped adherend are genuine products. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-164168 A Summary of the Invention [Problem to be solved by the invention]

[0004] The substrate supporting the display body may be removed from the genuine product and reattached to a counterfeit product or a box-shaped adherend containing the counterfeit product. The counterfeit product to which the substrate of the display sheet has been reattached or the box-shaped adherend containing the counterfeit product may become indistinguishable from the genuine product in appearance. There is a possibility that the counterfeit product may be distributed as if it were the genuine product. The present disclosure aims to make it possible to distinguish a display sheet that has been properly attached from a display sheet that has been properly attached even if the substrate of the display sheet has been reattached. [Means for solving the problem]

[0005] The present disclosure provides a display sheet having a first surface and a second surface opposite to the first surface, A display body, a substrate, a pseudo-adhesive layer, and an adhesive layer are provided in this order from the first surface to the second surface, The adhesive layer relates to a display sheet which is colored. Effect of the Invention

[0006] According to the present disclosure, even if the base material of the display sheet is reattached, it can be distinguished from a display sheet that has been properly attached. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of a member with a display sheet attached thereto, in which the display sheet is attached to an adherend. [Diagram 2] FIG. 2 is a plan view of the display sheet. [Diagram 3] FIG. 3 is a cross-sectional view of a member with a display sheet. [Figure 4] FIG. 4 is a cross-sectional view of the display sheet. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] In the drawings attached to this specification, the scale and the aspect ratios have been appropriately changed and exaggerated from those of the actual objects for the convenience of illustration and understanding. Configurations shown in some drawings may be omitted in other drawings.

[0009] In this specification, terms specifying shapes or geometric conditions and their degrees, such as "parallel," "orthogonal," "same," and the like, as well as values ​​of lengths and angles, are not limited to their strict meanings, but are interpreted to include a range within which similar functions can be expected.

[0010] In this specification, the normal direction of a sheet-like member refers to the normal direction to the sheet surface of the target sheet-like member. Also, the "sheet surface" refers to the surface that coincides with the target sheet-like member when the target sheet-like member is viewed overall and globally.

[0011] In this specification, when multiple upper limit candidates and multiple lower limit candidates are listed for a parameter, the parameter may be a numerical range that combines any one of the upper limit candidates with any one of the lower limit candidates.

[0012] One embodiment of the present disclosure relates to [1] to [8]. [1] A display sheet having a first surface and a second surface opposite to the first surface, A display body, a substrate, a pseudo-adhesive layer, and an adhesive layer are provided in this order from the first surface to the second surface, The display sheet, wherein the adhesive layer is colored. [2] The basis weight of the substrate is 85 g / m 2 The display sheet according to [1], [3] The display sheet according to [1] or [2], wherein the substrate has a visible light transmittance of 20% or more. [4] The display sheet according to any one of [1] to [3], wherein the material of the substrate is paper. [5] The display sheet according to any one of [1] to [4], wherein the display is a hologram. [6] [1] to [5], and a display sheet according to any one of the above. A member with a display sheet comprising: an adherend to which the display sheet is attached. [7] The L between the first surface of the display sheet of the display sheet-attached member and the base material placed on the adherend. * a * b * The member with a display sheet according to [6], wherein the color difference in a color space is 1.2 or more. [8] A substrate; An adhesive layer overlaid on the substrate; a pseudo-adhesive layer disposed between the substrate and the adhesive layer; The adhesive layer is colored.

[0013] An embodiment of the present disclosure will be described with reference to the drawings. FIG. 1 shows a perspective view of a member 1 with a display sheet according to an embodiment. As shown in FIG. 1, the member 1 with a display sheet includes a display sheet 10 and an adherend 5. The display sheet 10 is attached to the adherend 5. In the illustrated example, the adherend 5 is a box-shaped container. The adherend 5 can contain contents through an opening. The opening is closed by a lid. By opening the lid, the contents can be taken out from the opening. The display sheet 10 is attached to a position that will be damaged when the lid of the adherend 5 is opened. Since the display sheet 10 is not damaged, it is guaranteed that the adherend 5 remains closed after the contents are contained in the adherend 5 and the display sheet 10 is attached.

[0014] The adherend 5 is not limited to the illustrated example, and may be an article itself that should be guaranteed to be authentic, rather than a container. In this case, the display sheet 10 guarantees that the adherend 5 is an authentic item.

[0015] The display sheet 10 has a first surface 11 and a second surface 12. The second surface 12 faces the first surface 11. The first surface 11 and the second surface 12 are sheet surfaces of the display sheet 10. The display sheet 10 is attached to the adherend 5 at the second surface 12. FIG. 2 shows a plan view of the first surface 11 of the display sheet 10. As shown in FIG. 2, the display sheet 10 includes an indicator 15 and a sheet member 20. The display sheet 10 guarantees that the contents contained in the adherend 5 are genuine by the indicator 15. An information indicator 13 such as numbers, letters, symbols, two-dimensional codes, and bar codes may be printed on the first surface 11 of the display sheet 10. The display sheet 10 may have a cut. Even if an attempt is made to peel off the substrate 21 described later from the display sheet 10, the substrate 21 will tear along the cut.

[0016] 3 is a cross-sectional view of the display sheet 10 taken along line III-III in FIG. 2. As shown in FIG. 3, the display sheet 10 includes, from the first surface 11 toward the second surface 12, a display body 15, a substrate 21, a pseudo-adhesive layer 23, and an adhesive layer 25, in this order. The pseudo-adhesive layer 23 is disposed between the substrate 21 and the adhesive layer 25. The substrate 21, the pseudo-adhesive layer 23, and the adhesive layer 25 are included in a sheet member 20. In the example shown in FIG. 2, the sheet surface of the display sheet 10 is substantially rectangular, but may be of any shape. The size of the sheet surface of the display sheet 10 is 4 cm 2 It may be more than 100cm 2 It may be the following.

[0017] The display body 15 displays something that is difficult to imitate. The display body 15 is an anti-counterfeiting element for displaying to guarantee authenticity. The display body 15 may be a hologram. In particular, the display body 15 may be a reflective relief hologram. The display body 15, which is a hologram, diffracts light of a specific wavelength incident from a specific direction. The display body 15 is provided only on a part of the first surface 11 of the display sheet 10. The display body 15 is supported by a substrate 21. In the example shown in FIG. 2, the display body 15 has a substantially rectangular shape, but may have any shape. The thickness of the display body 15 may be, for example, 1 μm or more, or 100 μm or less. The display body 15 may be formed by vapor deposition of a metal such as aluminum. The display body 15 is adhered to the substrate 21 via an adhesive layer not shown.

[0018] The substrate 21 supports the display 15. The substrate 21 allows the color of a member closer to the second surface 12 of the display sheet 10 to be seen through the substrate 21. The substrate 21 extends over the entire display sheet 10. The size of the sheet surface of the substrate 21 is substantially the same as the size of the sheet surface of the display sheet 10. The thickness of the substrate 21 may be 50 μm or more, or 100 μm or less. The visible light transmittance of the substrate 21 may be 20% or more. The substrate 21 is made of a material on which an information display object can be printed and which can be peeled off from the pseudo-adhesive layer 23. The surface of the substrate 21 closer to the second surface 12 of the display sheet 10 may be rough so that it can be peeled off from the pseudo-adhesive layer 23. The material of the substrate 21 may be paper. The basis weight of the substrate 21 is 85 g / m 2 It may be less than 70 g / m 2 It may be less than 50 g / m 2 It may be more than that.

[0019] In this specification, the visible light transmittance is specified as the average value of the total light transmittance at each wavelength when measured at 1 nm intervals within the measurement wavelength range of 380 nm to 780 nm using a spectrophotometer (Shimadzu Corporation's "UV-3600i Plus", compliant with JIS K0115). A D65 light source is used for the measurement. The angle of incidence when measuring the visible light transmittance is set to 0° unless a particular transmission direction is specified. The angle of incidence is the angle between the normal to the incident surface and the traveling direction of the incident light, and is less than 90°.

[0020] In this specification, the basis weight is measured in accordance with JIS P8124:2011.

[0021] The pseudo-adhesive layer 23 exhibits adhesiveness and adheres to the substrate 21. The pseudo-adhesive layer 23 is easily peeled off from the substrate 21. The pseudo-adhesive layer may also be called a lead layer. The adhesive strength of the pseudo-adhesive layer 23 to the substrate 21 may be 0.8 N / m or more, or 1.3 N / m or less. Once peeled off from the substrate 21, the pseudo-adhesive layer 23 does not exhibit adhesiveness again. When the substrate 21 is paper, the pseudo-adhesive layer 23 easily adheres to the substrate 21 and is easily peeled off from the substrate 21. The thickness of the pseudo-adhesive layer 23 may be 2 μm or more, or 25 μm or less. The material of the pseudo-adhesive layer 23 may be any one of an acrylic adhesive, a vinyl acetate adhesive, and a rubber adhesive.

[0022] The adhesive layer 25 adheres the substrate 21 and the pseudo-adhesive layer 23 to the adherend 5. The adhesive strength of the adhesive layer 25 to the pseudo-adhesive layer 23 is stronger than the adhesive strength of the pseudo-adhesive layer 23 to the substrate 21. The adhesive strength of the adhesive layer 25 to the pseudo-adhesive layer 23 may be 350 N / m or more, or 400 N / m or more. The adhesive strength of the adhesive layer 25 is sufficiently strong, so that the substrate 21 can be peeled off from the pseudo-adhesive layer 23 without the adhesive layer 25 and the pseudo-adhesive layer 23 being peeled off from each other. The thickness of the adhesive layer 25 may be 10 μm or more, or 40 μm or less. The material of the adhesive layer 25 may be any one of acrylic resin, acrylic acid ester resin, or copolymers thereof, styrene-butadiene copolymer, natural rubber, casein, gelatin, rosin ester, terpene resin, phenolic resin, styrene-based resin, coumarone-indene resin, polyvinyl ether, and silicone resin.

[0023] In this specification, the adhesive strength is measured in accordance with Method 1 described in "10. Adhesive strength" in JIS Z0237:2009. The width of the test piece for measuring the adhesive strength is 24 mm.

[0024] The adhesive layer 25 is colored. The color of the adhesive layer 25 may be an achromatic color or a chromatic color. Achromatic colors include white, black, and gray. The adhesive layer 25 is colored, so that it is opaque. The adhesive layer 25 may be semi-transparent. The adhesive layer 25 may contain at least one of a dye and a pigment. The pigment is not particularly limited, and may be, for example, naphthol red F5RK or phthalocyanine blue.

[0025] The color of the adhesive layer 25 is visible through the substrate 21 and is observed from the first surface 11 of the display sheet 10. The color of the adhesive layer 25 is different from the color of the substrate 21. The color difference in the Lab color system between the first surface 11 of the display sheet 10 attached to the adherend 5 and the substrate 21 placed on the adherend 5 may be 1.2 or more, or 5.0 or more.

[0026] L * a * b * L in color space * The value of a * The value of b * The value of can be measured as follows using a spectrophotometer (Konica Minolta "CM-700d") with a measurement diameter of Φ8 mm and a viewing angle of 10 degrees. * A black plate with a value of 29.9 is placed on the surface opposite to the surface on which the black plate is placed. Light from a D65 light source is irradiated on the surface opposite to the surface on which the black plate is placed. The L value of the material is calculated from the total reflection light on the material to be measured. * The value of a * The value of and b * The value of is measured.

[0027] The L between the first surface 11 of the display sheet 10 attached to the adherend 5 and the substrate 21 placed on the adherend 5 * a * b * The color difference in the color system will be described. * The value of L * 1, a * The value of a * 1, b * The value of b* The substrate 21 is peeled off from the display sheet 10. The peeled substrate 21 is placed on the adherend 5 at a position different from the position where the display sheet 10 was placed, so that the entire sheet surface is in contact with the adherend 5. The L of the substrate 21 placed on the adherend 5 is measured. * The value of L * 2, a * The value of a * 2, b * The value of b * 2. From each measured value, ΔE * ab=[(L * 1-L * 2) 2 +(a * 1-a * 2) 2 +(b * 1-b * 2) 2 ] 1 / 2 Calculate the value of ΔE * The value of ab is the L between the first surface 11 of the display sheet 10 attached to the adherend 5 and the substrate 21 placed on the adherend 5. * a * b * It is the color difference in a color system.

[0028] FIG. 4 shows a cross-sectional view of the display sheet 10 before it is attached to the adherend 5. As shown in FIG. 4, the display sheet 10 includes, from the first surface 11 toward the second surface 12, a display body 15, a substrate 21, a pseudo-adhesive layer 23, an adhesive layer 25, and a separator 29, in this order. The separator 29 prevents the adhesive layer 25 from unintentionally contacting other members. When the display sheet 10 is attached to the adherend 5, the separator 29 is peeled off from the adhesive layer 25. The display sheet 10 may be wound into a roll while including the separator 29.

[0029] The substrate peeled from the conventional display sheet supports the display body. By using a seal remover or the like, the substrate can be peeled off from the display sheet without damaging it. By providing a separate adhesive layer on the substrate peeled off from the display sheet, the substrate supporting the display body can be reattached to another adherend. Even if the adherend to which the substrate supporting the display body has been reattached is a counterfeit product, it is difficult to distinguish it from a genuine product to which the display sheet has been properly attached, in appearance. There is a possibility that the counterfeit products will be distributed as genuine products, thereby diminishing the value of the genuine products.

[0030] In the display sheet 10 of this embodiment, the adhesive layer 25 is colored. The color of the adhesive layer 25 is observed from the first surface 11 of the display sheet 10. Even if the base material 21 supporting the display body 15 is peeled off from the display sheet 10, another adhesive layer is provided to form another display sheet, and the display sheet is reattached to another adherend, the color of the original adhesive layer 25 is not observed from the first surface of the display sheet. Even if the other adhesive layer is colored, it is difficult to make it exactly the same color as the original adhesive layer 25. A member with a display sheet in which the base material 21 supporting the display body 15 is reattached to another adherend can be clearly distinguished in appearance from a member with a display sheet 1 in which the display sheet 10 is properly attached to the adherend 5.

[0031] The basis weight of the substrate 21 is 85 g / m 2 or less, or when the visible light transmittance of the base material 21 is 20% or more, the color of the adhesive layer 25 is easily visible through the base material 21. The color of the adhesive layer 25 is easily observed from the first surface 11 of the display sheet 10. Even if the base material 21 supporting the display body 15 is reattached to a different adherend, the appearance can be clearly distinguished from a member 1 with a display sheet 10 properly attached to the adherend 5.

[0032] When the display 15 is a hologram, it is difficult to imitate the display 15. The display 15 can ensure that the contents contained in the adherend 5 to which the display sheet 10 is attached or the adherend 5 itself is proper.

[0033] When the material of the base material 21 is paper, the display sheet 10 easily tears. When the display sheet 10 is attached to an adherend 5 that is a container, the display sheet 10 easily tears when the contents are removed from the adherend 5. Since the display sheet 10 including the base material 21 made of paper does not tear, it is ensured that the adherend 5 remains closed after the contents are contained in the adherend 5 and the display sheet 10 is attached.

[0034] The L between the first surface 11 of the display sheet 10 attached to the adherend 5 and the substrate 21 placed on the adherend 5 * a * b * When the color difference in the color system is 1.2 or more, the color of the display sheet 10 is significantly different from the color of the substrate 21 alone. The color of the adhesive layer 25 is clearly observed on the first surface 11. This is because the difference between the color of the display sheet 10 and the color of the substrate 21 is caused by the color of the adhesive layer 25. Even if the substrate 21 supporting the display body 15 is reattached to a different adherend, it can be clearly distinguished in appearance from a member 1 with a display sheet in which the display sheet 10 has been properly attached to the adherend 5.

[0035] The display sheet 10 of this embodiment has a first surface 11 and a second surface 12 opposite to the first surface 11. The display sheet 10 includes, from the first surface 11 toward the second surface 12, a display body 15, a substrate 21, a pseudo-adhesive layer 23, and an adhesive layer 25, in this order. The adhesive layer 25 is colored. According to the display sheet 10 of this embodiment, even if the substrate 21 of the display sheet 10 is reattached, the adhesive layer 25 can be observed on the first surface 11, so that the display sheet 10 can be distinguished from a display sheet 10 that has been properly attached.

[0036] Although one embodiment has been described, the above-mentioned specific example does not limit the embodiment. The above-mentioned embodiment can be embodied in various other specific examples, and various omissions, substitutions, modifications, additions, etc. can be made without departing from the spirit of the embodiment. [Explanation of symbols]

[0037] 1. Materials with display sheet 5 Adherent 10 Display sheet 11 Page 1 12 Side 2 15 Display body 20 Sheet material 21 Base material 23 Pseudo adhesive layer 25 Adhesive layer

Claims

1. A display sheet having a first surface and a second surface opposite to the first surface, A display body, a base material, a pseudo-adhesive layer, and an adhesive layer are provided in this order from the first surface to the second surface, The display sheet, wherein the adhesive layer is colored.

2. The basis weight of the substrate is 85 g / m ２ 2. The display sheet according to claim 1, wherein:

3. The display sheet according to claim 1 , wherein the substrate has a visible light transmittance of 20% or more.

4. The display sheet according to claim 1 , wherein the material of the substrate is paper.

5. The display sheet according to claim 1 , wherein the display medium is a hologram.

6. The display sheet according to claim 1 ; A member with a display sheet comprising: an adherend to which the display sheet is attached.

7. The L between the first surface of the display sheet of the display sheet-attached member and the base material placed on the adherend. * a * b * The member with an indicator sheet according to claim 6 , wherein a color difference in a color system is 1.2 or more.

8. A substrate; An adhesive layer overlaid on the substrate; a pseudo-adhesive layer disposed between the substrate and the adhesive layer; The adhesive layer is colored.

Images