Sheet structure

Abstract

The present invention provides a sheet structure that can improve the decorative effect of the outer surface of the sheet structure and can appropriately detect defects caused by the peeling of the packaging sheet. [Solution] The sheet structure (1) comprises a sheet laminate formed by stacking multiple sheets, and a packaging body (20) that packages the sheet laminate. The packaging body comprises a packaging sheet having an opening that serves as an outlet for the sheets, and a lid (22) that covers the opening in a manner that can be opened and closed. The packaging sheet is provided with a toy design section (80) that extends across the top and sides and is used as a toy. The difference between the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the lid and the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the packaging sheet is 32 or more.

Description

Technical Field

[0001] The present invention relates to a sheet structure in which a sheet laminate formed by laminating sheets such as wet tissues is packaged with a packaging body.

Background Art

[0002] There has been provided a sheet structure having a sheet laminate in which a plurality of sheets are laminated and a packaging body for packaging the sheet laminate (see, for example, Patent Document 1). The packaging body has a packaging sheet having an opening serving as an outlet for the sheet and a lid body that covers the opening in an openable and closable manner. When in use, the user opens the lid body and takes out the sheet through the opening.

[0003] In the sheet structure configured as described above, as a method for manufacturing a packaging body having an opening and a lid body, for example, an adhesive is previously applied to the surface (inner surface) of the lid body on the packaging sheet side, a cutting portion is formed in the packaging sheet so as to surround the opening, and the lid body is disposed on the packaging sheet so as to cover the entire area of the cutting portion. The area surrounded by the cutting portion of the packaging sheet packaging adheres to the inner surface of the lid body, rises together with the lid body when the lid body is opened and closed, and an opening is formed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the above-described sheet structure has the following problems. After forming a cut section in the packaging sheet, the packaging sheet in the area enclosed by the cut section sometimes peeled off before the lid was placed on the packaging sheet, resulting in a portion of the area not being covered by the packaging sheet. If a portion of the area enclosed by the cut section is not covered by the packaging sheet, problems such as the moisture in the wet wipe evaporating before use may occur.

[0006] Sheet structures can be used not only when housed in a case and the sheet is removed through an opening in the case, but also when used as a standalone sheet structure without being housed in a case. Therefore, in recent years, decorative elements such as patterns have been added to the surface of sheet structures to enhance their decorative appeal when used as a standalone unit. Adding decorative elements can improve the decorative effect of the sheet structure. However, this decorative design can sometimes lead to similar designs for the packaging sheet and the lid, making it difficult to properly detect peeling of the packaging sheet. Furthermore, some users may expect additional functions or decorative effects beyond the aesthetic benefits of the decorative elements.

[0007] This invention has been made in view of the above-mentioned problems, and aims to provide a sheet structure that can improve the decorative effect of the outer surface of the sheet structure and can appropriately detect defects caused by the peeling of the packaging sheet. [Means for solving the problem]

[0008] A sheet structure according to one embodiment comprises a sheet laminate in which a plurality of sheets containing moisture are stacked, and a packaging body for packaging the sheet laminate. The packaging body comprises a packaging sheet having an opening that serves as an outlet for the sheets, and a lid that can open and close to cover the opening. The sheet structure is configured such that when the lid is pulled from the upstream side to the downstream side in the opening direction, the area of ​​the packaging sheet surrounded by the cut portion surrounding the opening is separated via the cut portion surrounding the opening, thereby forming the opening. The sheet laminate extends in a planar direction including a first direction and a second direction which are orthogonal to each other, and has an upper surface on which the lid is placed, a lower surface facing the upper surface and extending in the planar direction, and a side surface placed between the upper surface and the lower surface and extending in a third direction which is the height direction. The packaging sheet is provided with a toy design portion that extends across the upper surface and the side surface and is used as a toy. The difference between the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the lid and the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the packaging sheet is 32 or more. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a perspective view of a sheet structure according to an embodiment. [Figure 2] Figure 2 is a top view of the sheet structure according to the embodiment. [Figure 3] Figure 3 is a cross-sectional view along line AA shown in Figure 2. [Figure 4] Figure 4 shows the state in which an opening has been formed in the cross-section shown in Figure 3. [Figure 5] Figure 5 is a first side view of the sheet structure according to the embodiment. [Figure 6] Figure 6 is a third side view of the sheet structure according to the embodiment. [Figure 7] Figure 7 is a schematic plan view illustrating some of the steps involved in the manufacturing process of a sheet structure. [Modes for carrying out the invention]

[0010] (1) Outline of the Embodiment The following matters become clear from this specification and the accompanying drawings: The invention according to Embodiment 1 is a sheet structure comprising a sheet laminate in which a plurality of sheets containing moisture are stacked, and a packaging body for packaging the sheet laminate. The packaging body comprises a packaging sheet having an opening that serves as an outlet for the sheets, and a lid that covers the opening in a manner that can be opened and closed. The sheet structure is configured such that when the lid is pulled from the upstream side to the downstream side in the opening direction, the area of ​​the packaging sheet surrounded by the cut portion surrounding the opening is separated via the cut portion surrounding the opening, thereby forming the opening. The sheet laminate extends in a planar direction including a first direction and a second direction which are orthogonal to each other, and has an upper surface on which the lid is placed, a lower surface facing the upper surface and extending in the planar direction, and a side surface placed between the upper surface and the lower surface and extending in a third direction which is the height direction. The packaging sheet is provided with a toy design portion that extends across the upper surface and the side surface and is used as a toy. The difference between the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the lid and the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the packaging sheet is 32 or more. According to this embodiment, the packaging sheet is provided with a toy design section that extends across the top and sides and is used as a toy. The top surface has an opening and is a surface that is easily visible to the user. The toy design section is provided over a wide area that spans the top and sides and is easily recognizable by the user. Furthermore, the toy design section is a design section that enables the sheet structure to be used as a toy, and in addition to its aesthetic decorative effect, it can provide a toy function. Furthermore, in detecting peeling of the packaging sheet, the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the lid and the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the packaging sheet are 32 or greater, so the packaging sheet and the lid can be clearly distinguished, and peeling of the packaging sheet can be detected. Thus, defects caused by peeling of the packaging sheet can be appropriately detected while enhancing the decorative effect on the outer surface of the sheet structure.

[0011] In a preferred embodiment, the invention according to Embodiment 2 may have the following features in the invention according to Embodiment 1: The length of the sheet structure in the first direction is longer than the length of the sheet structure in the second direction. The side surface has a first side surface and a second side surface that extend in the first and third directions and are opposite to each other, and a third side surface and a fourth side surface that extend in the second and third directions and are opposite to each other. A packaging joint for joining the packaging sheets together is provided along the second direction at the center of the third side surface in the third direction. The toy design portion is arranged to span at least the top surface, the first side surface, and the third side surface. The toy design portion on the top surface has a design indicating the roof of the vehicle. The toy design portion on the first side surface has a design indicating the side windows and tires of the vehicle. The toy design portion on the third side surface has a design indicating the front window of the vehicle. The front window design is arranged on the third side surface only on the top surface side of the packaging joint. According to this embodiment, the toy design section is designed to resemble a vehicle, providing a way to use it as a vehicle toy. Furthermore, since the design of the front window is positioned only on the upper side above the packaging joint, the reduction in the design quality of the front window due to the packaging joint is suppressed, and the design quality as a toy can be improved.

[0012] In a preferred embodiment, the invention according to Embodiment 3 may have the following features in the invention according to Embodiment 2: The design of the front window is arranged to span the third side surface and the top surface. According to this embodiment, the area of ​​the front window, which is the main design of the toy modeled after a vehicle, can be secured while providing the packaging joints necessary for the function of the sheet structure. In addition, when the user looks at the top surface, they can see a part of the front window, making it easier to recognize that it is a toy modeled after a vehicle.

[0013] In a preferred embodiment, the invention according to Embodiment 4 may have the following features in the invention according to Embodiment 2 or Embodiment 3: The toy design portion is arranged across the second side and the fourth side. The packaging joint is provided along the second direction at the center of the fourth side in the third direction. The toy design portion on the fourth side has a design that represents the rear window of a vehicle. The toy design portion on the second side has a design that represents the side door and side window of the vehicle. The rear window design is arranged on the fourth side only on the upper side of the packaging joint. According to this embodiment, the design that imitates a vehicle is provided on the top surface and the entirety of the first to fourth sides, thereby further improving the design quality as a toy. Therefore, it is possible to make it easier for users to recognize the seat structure as a toy and encourage its use as a toy. In addition, since the rear window design is arranged only on the upper side of the packaging joint, it is possible to suppress the deterioration of the design quality of the rear window due to the packaging joint and improve the design quality as a toy.

[0014] In a preferred embodiment, the invention according to Embodiment 5 may have the following features in the invention according to Embodiment 4: The design of the rear window is arranged to span the fourth side surface and the top surface. According to this embodiment, the area of ​​the rear window, which is the main design of the toy modeled after a vehicle, can be secured while providing the packaging joints necessary for the function of the seat structure. In addition, when the user looks at the top surface, they can see a part of the rear window, making it easier to recognize that it is a toy modeled after a vehicle.

[0015] According to a preferred embodiment, the invention according to aspect 6 may have the following features in the invention according to any one of aspects 1 to 5. The inner surface of the lid is white. In the region surrounded by the cut portion of the packaging sheet, a first color and a second color having a higher lightness in the Munsell color system than the first color are attached. The area of the first color within the region surrounded by the cut portion of the packaging sheet is larger than the area of the second color within the region surrounded by the cut portion of the packaging sheet. According to this aspect, the ratio of the first color occupying the region surrounded by the cut portion of the packaging sheet is higher than that of the second color. Therefore, the difference between the measured value of the white color of the inner surface of the lid and the measured value of the inner surface of the packaging sheet is likely to be large, and the curling of the packaging sheet can be detected more appropriately.

[0016] According to a preferred embodiment, the invention according to aspect 7 may have the following features in the invention according to aspect 6. The first color and the second color belong to any one of the 24 color samples classified by the Ostwald color wheel. According to this aspect, since the first color and the second color, which are the same series of colors belonging to any one of the 24 color samples classified by the Ostwald color wheel, can exhibit the same concept of color effect, the decorative effect of the sheet structure can be improved while maintaining the detection accuracy of the curling of the packaging sheet.

[0017] (2) Configuration of the sheet structure Hereinafter, the sheet structure 1 according to the embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the ratios of each dimension and the like are different from the actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Also, there may be portions where the dimensional relationships and ratios are different between the drawings.

[0018] FIG. 1 is a perspective view of the sheet structure 1. FIG. 2 is a view showing the upper surface 15 of the sheet structure 1. FIG. 3 is a cross-sectional view taken along the line A-A shown in FIG. 2. FIG. 4 is a view showing a state in which an opening 7 is formed in the cross section shown in FIG. 3. FIG. 5 is a view showing the first side surface 11 of the sheet structure 1 according to the embodiment. FIG. 6 is a view showing the third side surface 13 of the sheet structure 1 according to the embodiment. The sheet structure 1 includes a sheet laminate 50 in which a plurality of sheets 51 having moisture are laminated, and a package 20 that packages the sheet laminate 50. The package 20 includes a packaging sheet 21 having an opening 7 that serves as an outlet for the sheet 51, and a lid 22 that covers the opening 7 so as to be openable and closable.

[0019] The sheet structure 1 has an upper surface 15 and a lower surface 16 that face each other. The upper surface 15 and the lower surface 16 are surfaces that extend in a planar direction including a first direction D1 and a second direction D2 that are orthogonal to each other. The length of the sheet structure 1 in the first direction D1 may be longer than the length of the sheet structure 1 in the second direction D2. In the present embodiment, the first direction D1 extends in the horizontal direction, and the second direction D2 extends in the vertical direction. The upper surface 15 and the lower surface 16 are arranged at intervals in a third direction D3 that is the height direction. The third direction D3 is orthogonal to the first direction D1 and the second direction D2. The upper surface 15 is the surface on which the lid 22 is arranged. The lower surface 16 is the surface that faces the upper surface 15.

[0020] The sheet structure 1 has side surfaces that connect the upper surface 15 and the lower surface 16 and extend in the third direction D3. The side surfaces may have a first side surface 11 and a second side surface 12 that extend in the first direction D1 and the third direction D3 and face each other, and a third side surface 13 and a fourth side surface 14 that extend in the second direction D2 and the third direction D3 and face each other. A packaging joint 5 for joining the packaging sheets 21 to each other may be provided along the second direction D2 at the center of the third direction D3 of the third side surface 13 and the fourth side surface 14. The sheet structure 1 may be a substantially rectangular parallelepiped. Each surface may be a rectangular surface. Also, at the boundaries where the surfaces intersect each other, they may intersect in a curved shape instead of intersecting perpendicularly.

[0021] The sheets 51 of the sheet laminate 50 are sheets containing moisture (for example, wet wipes). The sheet laminate 50 may be folded at least along a crease in the first direction D1. In the folded state, adjacent sheets 51 may be arranged alternately in the thickness direction. In the state where it is housed in the packaging 20 (in this embodiment, folded along a crease in the first direction D1), the length of the sheet laminate 50 in the first direction D1 may be longer than the length of the sheet laminate 50 in the second direction D2. In the modified version, the length of the sheet laminate 50 in the first direction D1 may be the same as the length of the sheet laminate 50 in the second direction D2, or it may be shorter than the length of the sheet laminate 50 in the second direction D2. Furthermore, the sheet 51 may be folded using a crease extending in the second direction D2 as a base point, or it may be stacked without being folded using a crease as a base point, or it may be composed of continuous sheets and configured to be partially detachable via perforations.

[0022] The packaging body 20 contains a sheet laminate 50. The packaging body 20 has a packaging sheet 21 and a lid 22. The packaging sheet 21 may be made of a resin film such as a polyolefin resin or a polyester resin. The packaging sheet 21 may have an opening 7 which serves as an outlet for the sheet 51. The opening 7 may be a portion surrounded by a cut portion CP (see Figure 3). The cut portion CP may be a fragile portion such as a perforation or a cutting line. The cut portion CP may form the outer edge of the opening 7.

[0023] The opening 7 may be located on the top surface 15. That is, the surface on which the opening 7 is formed may constitute the top surface 15. The dimensions of the opening 7 should be such that each sheet 51 can be pulled out. As shown in Figure 7, the shape of the opening 7 may be elliptical, horizontally (vertically) elongated, or perfectly circular in plan view, and its shape is not limited. Preferably, the shape of the opening 7 may be curved and not have sharp corners in order to prevent the sheet 51 from getting caught. The opening 7 may be located in the center of the second direction D2 and the center of the first direction D1 of the sheet structure 1.

[0024] The lid 22 is configured to cover the opening 7 in a way that allows it to be opened and closed. The lid 22 has a larger area than the opening 7. When the lid 22 is pulled from the upstream side to the downstream side in the opening direction D4, the region R10 of the packaging sheet 21 surrounded by the cut portion CP surrounding the opening 7 is separated, and the opening 7 is formed. Figure 4 shows the state in which the opening 7 is formed in the cross-section shown in Figure 3. An adhesive layer 24 having an adhesive material is attached to the surface of the lid 22 facing the packaging sheet 21, and the lid 22 may be bonded to the packaging sheet 21 in a way that allows it to be peeled off. In this embodiment, the sheet structure 1 has a cut portion CP formed in the packaging sheet 21, and when the lid 22 is pulled away from the packaging sheet 21 during use, the region R10 surrounded by the cut portion CP in the packaging sheet 21 is separated and peeled off together with the lid 22. This forms the opening 7. In other words, in this embodiment, the sheet structure 1 has an opening 7 that is exposed when the lid 22 is pulled by the user during use.

[0025] The opening 7 may be exposed by the lid 22 separating from the top surface 15, or the opening 7 may be exposed by the other part (upright region 26) of the lid 22 separating from the top surface 15 while a part of the lid 22 (base end 25) remains separated from the top surface 15. The lid 22 of this embodiment has an upright region 26 that stands upright with the base end 25 located at the downstream end of the lid 22 as the pivot point when pulled from the upstream end to the downstream end in the opening direction D4 (see Figure 3). The opening direction D4 of the lid of this embodiment is along the first direction D1. Figure 3 shows the range of the base end 25 and the upright region 26 in the first direction D1.

[0026] The sheet structure of this embodiment is configured to improve the decorative effect of the outer surface of the sheet structure 1 and to appropriately detect defects caused by the peeling of the packaging sheet 21. Next, the configuration for improving the decorative effect of the outer surface of the sheet structure 1 and appropriately detecting defects caused by the peeling of the packaging sheet 21 will be described in detail. The packaging sheet 21 is provided with a toy design section 80 that extends across the top surface 15 and the sides and is used as a toy. The toy design section 80 is a design that allows the sheet structure 1 to be used as a toy, and may be a design that allows the user to play with it as a toy by looking at the design, or it may be a design that allows the user to pick up the sheet structure 1 and play with it as a toy. The design of this embodiment is a design that imitates an automobile as a vehicle, and more specifically, a design that imitates a patrol car.

[0027] The toy design portion 80 of the sheet structure 1 in this embodiment extends across the top surface 15 and the side surface. The toy design portion 80 only needs to be provided on at least one of the first side surface 11 to the fourth side surface 14, and preferably on all of the first side surface 11 to the fourth side surface 14. The top surface 15 has an opening 7 and is a surface that is easily visible to the user. Because the toy design portion 80 extends across the top surface 15 and the side surface, the user can easily recognize the toy design portion 80. Furthermore, because the toy design portion 80 is provided over a wide area that extends across the top surface 15 and the side surface, the user can recognize the toy design portion 80 even more easily. The toy design portion 80 is a design intended for the sheet structure 1 to be used as a toy, and in addition to its aesthetic decorative effect, it can provide a toy function. Therefore, the decorative effect of the sheet structure 1 can be enhanced.

[0028] Figure 7 is a schematic plan view illustrating some steps in the manufacturing method of the sheet structure 1. Figure 7 shows the packaging sheet 21 and the lid 22 as viewed from the inner side of the packaging sheet 21, with the lid 22 positioned on the back side of the packaging sheet 21. In order to form an opening 7 in the packaging sheet 21, first, as shown in Figure 7(A), a cut portion CP for forming the opening 7 is formed on the upper surface 15 of the packaging sheet 21. Next, as shown in Figure 7(B), the lid 22 is positioned so as to cover the area R10 surrounded by the cut portion CP of the packaging sheet 21. At this time, a part of the area R10 surrounded by the cut portion CP may peel off, and as shown in Figure 7(C), it may not be possible to completely cover the opening 7 with the area R10 surrounded by the cut portion CP.

[0029] To detect such defects, a sensor can detect peeling in the region R10 surrounded by the cut portion CP. More specifically, in this embodiment, the sensor intermittently measures the color components (R, G, B) and brightness (amount of light received) on a detection line (DL shown in Figure 7) that includes a position passing through the region R10 surrounded by the cut portion CP. The detection line DL is along the transport direction of the packaging sheet 21, and in this embodiment, it is along the first direction D1. If the packaging sheet 21 is not peeled, the inner surface of the packaging sheet 21 is placed at the detection position, and the measured values ​​of the color components (R, G, B) and brightness (amount of light received) of the inner surface of the packaging sheet 21 are obtained. On the other hand, as shown in Figure 7(C), if the packaging sheet 21 is peeled, the inner surface of the lid 22 is placed at the detection position instead of the inner surface of the packaging sheet 21, and the measured values ​​of the color components (R, G, B) and brightness (amount of light received) of the inner surface of the lid 22 are obtained.

[0030] As a result of diligent research by the applicant, it has been found that if the difference between the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the lid 22 and the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the packaging sheet 21 is 32 or more, then the peeling of the packaging sheet 21 can be appropriately detected. By having a difference of 32 or more between the measured values ​​on the inner surface of the packaging sheet 21 and the measured values ​​on the inner surface of the lid 22, the packaging sheet 21 and the lid 22 can be clearly distinguished, and the peeling of the packaging sheet 21 can be appropriately detected. Therefore, while enhancing the decorative effect of the outer surface by applying the toy design part 80 to the outer surface of the sheet structure, defects caused by the peeling of the packaging sheet 21 can be appropriately detected.

[0031] The color components (R, G, B) and brightness (amount of light received) can be measured under the following conditions. • Measuring instrument: Keyence LR-500 • Detection mode: C+I mode • Sensitivity setting: 2-point tuning • Detection distance: 100mm (distance from camera to object) • Sensor angle: 37° • Standard color: Color of the inner surface of lid 22 - Ten arbitrary points in the first direction D1 within the region R10 surrounded by the cut portion CP of the packaging sheet 21 on the inner surface of the packaging sheet 21 are measured, and the highest value is taken as the representative value. The color difference is calculated by subtracting the difference between the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the lid 22, which serves as the reference color, and the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the packaging sheet 21.

[0032] Table 1 below shows the measured values ​​for the sheet structures according to Examples 1 to 3, the measured values ​​for the sheet structures according to Comparative Examples 1 to 4, and whether or not the curling of the packaging sheet 21 can be detected. [Table 1]

[0033] Based on the measured values, a "○" was used if peeling was properly detected, and a "×" was used if peeling could not be detected or was sometimes not detected. As shown in Table 1, it was found that if the difference between the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the lid 22 and the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the packaging sheet 21 was 29 or less, peeling could not be properly detected, and if the difference between the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the lid 22 and the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the packaging sheet 21 was 32 or more, peeling could be properly detected.

[0034] The following describes preferred embodiments of this model. The inner surface of the lid 22 may be white. White may be a color with a Munsell color system lightness of 9.5 or higher. Within the region R10 surrounded by the cut portions CP of the packaging sheet 21, a first color and a second color with a higher Munsell color system lightness than the first color may be arranged. The first and second colors should be arranged so that they can be distinguished from at least the inner surface of the packaging sheet 21. The area of ​​the first color within the region R10 surrounded by the cut portions CP of the packaging sheet 21 may be larger than the area of ​​the second color within the region R10 surrounded by the cut portions of the packaging sheet 21. According to this embodiment, the proportion of the first color within the region R10 surrounded by the cut portions CP of the packaging sheet 21 is higher than that of the second color. Therefore, the difference between the measured value of the white on the lid and the measured value of the inner surface of the packaging sheet tends to be larger, making it easier to detect peeling of the packaging sheet more appropriately. In the modified example, the area of ​​the first color within the region R10 surrounded by the cut portion CP of the packaging sheet 21 may be smaller than the area of ​​the second color within the region R10 surrounded by the cut portion of the packaging sheet 21.

[0035] The first and second colors may belong to any of the 24 color charts classified by the Ostwald color circle. According to this embodiment, the first and second colors, which are of the same color family and belong to any of the 24 color charts classified by the Ostwald color circle, can produce the same color effect concept, thereby improving the decorative effect of the sheet structure while maintaining the accuracy of detecting peeling of the packaging sheet 21.

[0036] The sheet structure 1 of this embodiment is configured to improve the decorative effect of the outer surface of the sheet structure 1 and to allow the user to easily detect and recognize the lid 22. Next, the configuration that improves the decorative effect of the outer surface of the sheet structure 1 and allows the user to easily and appropriately detect and recognize the lid 22 will be described in detail.

[0037] The lid 22 has an outer edge portion 29 that runs along the outer edge 22E on the outer surface of the lid 22. The outer surface of the lid 22 is the surface facing outward on the lid 22, and is the opposite surface to the inner surface that faces the packaging sheet 21. The outer edge portion 29 is a region that extends along the outer edge on the outer surface of the lid 22. Specifically, the outer edge portion may be a range of 5 mm inward from the outer edge 22E on the outer surface of the lid 22. In Figure 2, a dashed line is drawn along the outer edge of the outer edge portion 29. Note that the outer edge of the outer edge portion 29 is the outer edge 22E of the lid 22.

[0038] The outer edge portion 29 has a single-color region RC in the packaging sheet 21 that is a single color different from the adjacent region 28 adjacent to the outer edge of the lid 22. The adjacent region 28 is a certain range from the outer edge 22E of the lid 22, and specifically, it may be a range of 5 mm outward from the outer edge 22E. In Figure 2, a dashed line is drawn along the outer edge of the adjacent region 28. The color of the single-color region RC is different from any of the colors applied to the adjacent region 28. Also, a single color is a single color that is not mixed with any other color. The single-color region RC may include areas that are slightly different in color due to printing inconsistencies, and specifically, areas where the color difference ΔE described later is 3.0 or less are included in the single-color region. The single-color region RC is provided in an area of ​​50% or more of the total area of ​​the outer edge portion 29. That is, the area of ​​the single-color region RC in relation to the total area of ​​the outer edge portion 29 is 50% or more and 100% or less.

[0039] In this embodiment, the outer edge portion 29 is painted white and blue, and both colors are different from the colors of the adjacent region 28, but more than 50% of the outer edge portion 29 is painted white. The blue is applied to the base end marker portion 92, which will be described later. The white is applied to the areas other than the base end marker portion 92. Therefore, the areas painted white constitute a single-color region RC. In this embodiment, the adjacent region 28 is painted with colors other than white and blue. Specifically, the adjacent region 28 is painted gray in the portion 81 which is the color of the roof base, and red in the portion 82 which is modeled after the red light of a patrol car.

[0040] The outer edge 29 of the lid 22 has a single-color area RC that is a different single color from the adjacent area 28 adjacent to the lid 22. Therefore, when a user looks at the top surface 15, it is easier to distinguish and recognize the packaging sheet 21 and the lid 22. In addition, because the outer edge 29 has a single color, the outer edge 29 of the lid 22 is more conspicuous compared to a configuration with multiple colors, making it easier for the user to recognize the lid 22.

[0041] The color difference ΔE between the single color region RC and the adjacent region 28 may be 19 or more, and preferably 25 or more. A color difference ΔE of 19 or more between the single color region RC and the adjacent region 28 makes the outer edge 29 of the lid 22 more conspicuous against the surrounding packaging sheet 21, making it easier for the user to recognize the location and presence of the lid 22.

[0042] The color difference ΔE is calculated by acquiring image data (JPEG) for two points to be measured, quantifying each point from the image data based on the CIE1976 (L*a*b*) color space as defined in Z 8781-4:201, and determining that when the difference in L* values ​​between the two points is ΔL*, the difference in a* is Δa*, and the difference in b* values ​​is Δb*, then the color difference ΔE = [(ΔL*) 2 +(Δa*) 2 +(Δb*) 2 ] 1 / 2 It is determined by [method].

[0043] The color difference ΔE between a single-color region RC and an adjacent region 28 is measured as follows: If a single color is assigned to both the single-color region RC and the adjacent region 28, an arbitrary point in each region is quantified based on the CIE1976 (L*a*b*) color space, and the color difference ΔE is measured. If at least one of the single-color region RC and the adjacent region 28 is not assigned a single color, then in that region, 10 points at 5mm intervals are quantified based on the CIE1976 (L*a*b*) color space. The smallest value among the color differences ΔE calculated based on the 10 quantified values ​​is adopted as the color difference ΔE between the single-color region RC and the adjacent region 28.

[0044] The color difference ΔE between the single color region RC and the color applied to the largest area on the packaging sheet 21 of the top surface 15 may be 25 or more. The color applied to the largest area on the packaging sheet 21 of the top surface 15 is the color applied to the largest area on the top surface 15 that is not covered by the lid 22. In this embodiment, the color applied to the largest area is the color of the base portion 81 of the vehicle's roof. In this embodiment, when a user views the entire top surface 15, the outer edge 29 of the lid 22 becomes more conspicuous compared to the surrounding packaging sheet 21, making it easier for the user to recognize the position and presence of the lid 22.

[0045] The toy design section 80 may be positioned across at least the top surface 15, the first side surface 11, and the third side surface 13. The toy design section 80 on the top surface 15 may have a design that represents the roof of a vehicle. In this embodiment, the design representing the roof of a vehicle on the top surface 15 has a portion 81 with the base color of the roof and a portion 82 that mimics the red light of a patrol car. The color difference ΔE between the portion 82 that mimics the red light of a patrol car and the single-color region RC is greater than the color difference ΔE between the portion 81 with the base color of the roof and the single-color region RC, making the red light of the patrol car more conspicuous. Because the red light of the patrol car is more conspicuous, users can easily notice the presence of the red light, which is a characteristic of a patrol car, and easily recognize that it is a toy that mimics a patrol car.

[0046] The toy design section 80 on the first side surface 11 may have a design 83 indicating the vehicle's side windows and a design 84 indicating the tires. The toy design section 80 on the first side surface 11 may also have a section 85 with the base color of the vehicle's side. The section 85 with the base color of the vehicle's side is the same color as the section 81 with the base color of the roof on the top surface 15 and may be continuous with the section 81 with the base color of the roof on the top surface 15. This configuration allows for an integrated design that spans the top surface 15 and the first side surface 11.

[0047] The toy design section 80 on the third side surface 13 may have a design 86 that represents the vehicle's front window. The front window design 86 may be positioned only on the upper side 15 of the packaging joint 5 on the third side surface 13. That is, the front window design 86 does not straddle the packaging joint 5 and is not positioned on the lower side 16 of the packaging joint 5. According to this embodiment, the deterioration of the front window design due to the packaging joint 5 can be suppressed, and the design quality as a toy can be improved.

[0048] The front window design 86 may be positioned across the third side surface 13 and the top surface 15. According to this embodiment, the area of ​​the front window, which is the main design of the toy modeled after a vehicle, can be secured while providing the packaging joint 5 necessary for the function of the sheet structure 1. In addition, when the user looks at the top surface 15, they can see a part of the front window, making it easier to recognize that it is a toy modeled after a vehicle.

[0049] The toy design section 80 on the third side surface 13 may have a portion 87 that is the same color as the base portion 81 of the front of the vehicle. The portion 87 that is the same color as the base portion 81 of the roof on the top surface 15 may be continuous with the base portion 81 of the roof. This configuration allows for an integrated design that spans the top surface 15 and the third side surface 13.

[0050] Preferably, the toy design section 80 may also be positioned across the second side 12 and the fourth side 14. That is, the toy design section 80 may be positioned across the top surface 15 and across the first side 11 to the fourth side 14. According to this embodiment, the vehicle-like design will be present across the entire top surface 15 and the first side 11 to the fourth side 14, further improving the design quality as a toy. In this embodiment, the toy design section 80 is also positioned on the bottom surface 16. However, the toy design section 80 does not have to be positioned on the bottom surface 16.

[0051] The toy design section 80 on the second side 12 may have a design 83 indicating the vehicle's side windows and a design 84 indicating the tires, similar to the first side 11. The toy design section 80 on the second side 12 may also have a section 85 with the base color of the vehicle's side. The section 85 with the base color of the vehicle's side is the same color as the section 81 with the base color of the roof on the top surface 15 and may be continuous with the section 81 with the base color of the roof on the top surface 15. This configuration allows for an integrated design spanning the top surface 15 and the second side 12.

[0052] The toy design section 80 on the fourth side 14 may have a rear window design 88. The rear window design 88 may be located only on the upper side 15 of the packaging joint 5 on the fourth side 14. According to this embodiment, the reduction in the design quality of the rear window due to the packaging joint 5 can be suppressed, and the design quality of the toy can be improved.

[0053] The rear window design 88 may be positioned across the fourth side surface 14 and the top surface 15. According to this embodiment, the area of ​​the rear window, which is the main design of the toy modeled after a vehicle, can be secured while providing the packaging joint 5 necessary for the function of the seat structure 1. In addition, when the user looks at the top surface 15, they can see a part of the rear window, making it easier to recognize that it is a toy modeled after a vehicle.

[0054] The fourth side surface 14 may have a portion 89 that is the same color as the base portion 81 of the roof on the upper surface 15, and may be continuous with the base portion 81 of the roof on the upper surface 15. This configuration allows for an integrated design that spans the upper surface 15 and the fourth side surface 14.

[0055] The outer surface of the lid 22 may be provided with a lid design section 91, which has a different design from the toy design section 80, and a base end marker section 92, which indicates the position of the base end 25. The lid design section 91 only needs to have a different design from the toy design section 80, and may consist of pictures, letters, patterns, etc. In this embodiment, the lid design section 91 is letters indicating the product name. The lid design section 91 may be spaced apart from the outer edge of the lid 22. Because the lid design section 91, which has a different design from the toy design section 80 of the packaging sheet 21, is provided on the lid 22, the presence of the lid design section 91 makes the lid 22 more noticeable. Also, because the lid design section 91 is spaced apart from the outer edge of the lid 22, it is easy to distinguish between the toy design section 80 and the lid design section 91, making it easier for the user to recognize each design.

[0056] The base end marker portion 92 is an indicator showing the position of the base end portion 25 and may be positioned spaced apart from the lid design portion 91. The base end marker portion 92 only needs to indicate the position of the base end portion 25 and may or may not overlap with the base end portion 25. In this embodiment, the base end marker portion 92 is positioned adjacent to the upstream end of the base end portion 25 in the opening direction D4 without overlapping with the base end portion 25, and is in a straight line extending in the second direction D2. The lid design portion 91 and the base end marker portion 92 may have different colors from the single color area RC and the adjacent area 28, but may have the same color as each other. The same color that the lid design portion 91 and the base end marker portion 92 have is different from the single color area RC and different from the adjacent area 28. According to this embodiment, since the lid design portion 91 and the base end marker portion 92 are different colors from the single color area RC and the adjacent area 28, the lid design portion 91 and the base end marker portion 92 are easily distinguishable from their surroundings and easily stand out. Furthermore, since the base end marker portion 92 and the lid design portion 91 have the same color, they easily attract the user's attention through their synergistic effect. The user can easily grasp the position of the base end portion 25. In this embodiment, the lid design portion 91 and the base end marker portion 92 may have the same color as at least a part of the base end marker portion 92, or at least a part of the lid design portion 91 may have the same color as the base end marker portion 92. Preferably, the main color of the base end marker portion 92 (the color applied to the largest area) may be the same as the main color of the lid design portion 91. Furthermore, in the modified form, the lid design portion 91 may be a different color from the single-color area RC and the adjacent area 28, and the base end marker portion 92 may be a different color from the single-color area RC and the adjacent area 28, and the lid design portion 91 and the base end marker portion 92 may be different colors.

[0057] The color difference ΔE between the lid design portion 91 and the single-color area RC may be greater than the color difference ΔE between the single-color area RC and the adjacent area 28. According to this embodiment, since the color difference ΔE between the single-color area RC and the lid design portion 91 is greater than the color difference ΔE between the single-color area RC and the adjacent area 28, the lid design portion 91 attached to the lid 22 is more conspicuous. Therefore, if the lid design portion 91 is text indicating the product name, brand name, usage precautions, etc., the text becomes easier for the user to read.

[0058] Furthermore, the outer surface of the lid 22 may be provided with a lid design section 91 that is different from the toy design section 80, and an opening indicator section 93 that indicates the position of the upstream end in the opening direction D4 of the lid 22. The lid design section 91 and the opening indicator section 93 may be different in color from the single color area RC and the adjacent area 28, but may have the same color as each other. According to this embodiment, since the lid design section 91 and the opening indicator section 93 are different in color from the single color area RC and the adjacent area 28, the lid design section 91 and the opening indicator section 93 are easily distinguishable from their surroundings and easily stand out. Moreover, the opening indicator section 93 and the lid design section 91 have the same color, and their synergistic effect makes it easier to attract the user's attention. The presence of the opening indicator section 93 makes it easier for the user to grasp the opening position of the lid 22. In this embodiment, the opening indicator section 93 is triangular in shape and points to the upstream end in the opening direction D4. Furthermore, in the modified example, the lid design portion 91 may be a different color from the single-color area RC and the adjacent area 28, and the opening indicator portion 93 may be a different color from the single-color area RC and the adjacent area 28, and the lid design portion 91 and the opening indicator portion 93 may be different colors.

[0059] Although the present invention has been described in detail using the embodiments described above, it will be clear to those skilled in the art that the present invention is not limited to the embodiments described herein. The present invention can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the claims. Therefore, the description herein is for illustrative purposes only and is not intended to be restrictive in any way to the present invention.

[0060] The toy design section of this embodiment is designed to resemble a patrol car, which is an example of an automobile, but is not limited to this form. The toy design section may be designed to resemble an automobile such as a bus, fire truck, ambulance, truck, passenger car, racing car, or taxi; it may be designed to resemble a railway vehicle such as an electric train, bullet train, locomotive, or freight car; it may be designed to resemble an aircraft; or it may be designed to resemble a ship. [Explanation of Symbols]

[0061] 1: Sheet structure 5: Packaging joint 7:Aperture 11 :1st side 12:Second side 13:Third side 14: 4th side 15:Top surface 16: Bottom surface 20: Packaging 21: Packaging sheet 22: Lid 25: Proximal end 26: Orthostatic area 28: Adjacent Regions 29: Outer edge RC: Single color area R10: The area surrounded by the cut edges of the packaging sheet. CP: Cutting section 50: Sheet laminate 51: Sheet D1: 1st direction D2 :Second direction D3: Third direction

Claims

1. A sheet laminate in which multiple sheets containing moisture are stacked, The packaging comprises a packaging body for packaging the aforementioned sheet laminate, The packaging comprises a packaging sheet having an opening that serves as an outlet for the sheet, and a lid that can be opened and closed to cover the opening. A sheet structure configured such that when the lid is pulled from the upstream side to the downstream side in the opening direction, the region of the packaging sheet surrounded by the cut portion surrounding the opening is separated via the cut portion surrounding the opening, and the opening is formed, The sheet laminate extends in a planar direction including a first and second direction which are mutually orthogonal, and has an upper surface on which the lid is placed, a lower surface facing the upper surface and extending in the planar direction, and a side surface positioned between the upper surface and the lower surface and extending in a third direction which is the height direction. The aforementioned packaging sheet has a toy design section that extends across the top and sides and is intended for use as a toy. A sheet structure in which the difference between the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the lid and the measured values ​​of the color components (R, G, B) and brightness (amount of light received) on the inner surface of the packaging sheet is 32 or more.

2. The length of the sheet structure in the first direction is longer than the length of the sheet structure in the second direction. The aforementioned side surface has a first side surface and a second side surface that extend in the first and third directions and are opposite to each other, and a third side surface and a fourth side surface that extend in the second and third directions and are opposite to each other. A packaging joining portion for joining the packaging sheets together is provided along the second direction at the center of the third side surface in the third direction. The toy design section is arranged to span at least the top surface, the first side surface, and the third side surface, The toy design portion on the upper surface has a design that indicates the roof of a vehicle. The toy design portion on the first side has a design that shows the side windows and tires of the vehicle. The toy design portion on the third side has a design that shows the front window of the vehicle, The sheet structure according to claim 1, wherein the design of the front window is positioned on the third side surface only on the upper side of the packaging joint.

3. The sheet structure according to claim 2, wherein the design of the front window is arranged to span the third side surface and the top surface.

4. The toy design section is also positioned across the second and fourth sides, The packaging joint is provided along the second direction at the center of the fourth side surface in the third direction, The toy design portion on the fourth side has a design that shows the rear window of the vehicle. The toy design section on the second side has a design that shows the side door and side window of the vehicle. The sheet structure according to claim 2 or 3, wherein the design of the rear window is positioned on the fourth side surface only on the upper side of the packaging joint.

5. The sheet structure according to claim 4, wherein the design of the rear window is arranged to span the fourth side surface and the top surface.

6. The inner surface of the lid is white. The area surrounded by the cut portion of the packaging sheet is marked with a first color and a second color having a higher lightness in the Munsell color system than the first color. The sheet structure according to any one of claims 1 to 3, wherein the area of ​​the first color within the region surrounded by the cut portion of the packaging sheet is larger than the area of ​​the second color within the region surrounded by the cut portion of the packaging sheet.

7. The sheet structure according to claim 6, wherein the first color and the second color belong to any color chart among the 24 color charts classified by the Ostwald color circle.

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