Sheet storage box

Abstract

This sheet storage box comprises a rectangular cuboid shaped box body for storing a plurality of stacked sheets, and a removal opening that opens in a top surface of the box body and extends in the longitudinal direction of the top surface, wherein: the removal opening is surrounded by a first end edge located on one end portion side, in the lateral direction of the top surface, with respect to a first imaginary center line that passes through the center of the top surface and extends in the longitudinal direction, and a second end edge located on the other end portion side in the lateral direction; the first end edge has a plurality of first peak portions and a plurality of first valley portions with respect to the first imaginary center line; the second end edge has a plurality of second peak portions and a plurality of second valley portions with respect to the first imaginary center line; the first peak portions and the second peak portions face each other in the lateral direction; and at both end portions, in the longitudinal direction, of the removal opening, the top portion of the first peak portion and the top portion of the second peak portion are disposed so as to be offset from each other in the longitudinal direction.

Description

Seat storage box

[0001] This disclosure relates to a seat storage box.

[0002] Conventional sheet storage boxes contain sheets such as tissue paper in a box (also called a carton) made of cardboard or similar material, with an opening on the top of the box for removing the sheets. Furthermore, a resin film (also called a window film) is attached to the back of the opening, and the sheets are pulled out through slits formed in this film (see, for example, Patent Document 1).

[0003] Also, in recent years CO ２ As a measure to combat global warming caused by emissions, there is a movement to reduce the use of plastics, from the perspective of reducing the use of fossil fuels and curbing marine pollution such as microplastics. In response to this, sheet storage boxes that do not use resin film (also called filmless cartons) are known (see, for example, Patent Document 2).

[0004] Patent No. 4142238 Patent No. 6554284

[0005] However, in sheet storage boxes that do not use a resin film at the opening, the sheet being pulled out may get caught on the edge of the opening, making it difficult to remove. Also, the pulled-out sheet may not be supported by the opening and may fall into the inside of the box. Thus, sheet storage boxes that do not use a resin film have the problem of poor sheet removal.

[0006] The objective of this disclosure is to provide a sheet storage box that offers excellent sheet removal capabilities without the need for a resin film.

[0007] A sheet storage box according to one aspect of the present disclosure comprises a rectangular parallelepiped box body for accommodating a plurality of stacked sheets, and an outlet opening on the top surface of the box body and extending in the longitudinal direction of the top surface, wherein the outlet is surrounded by a first edge located on one end side in the short direction of the top surface and a second edge located on the other end side in the short direction of the top surface with respect to a first virtual center line extending in the longitudinal direction through the center of the top surface, the first edge having a plurality of first peaks and a plurality of first valleys with respect to the first virtual center line, the second edge having a plurality of second peaks and a plurality of second valleys with respect to the first virtual center line, the first peaks and the second peaks facing each other in the short direction, and at both ends of the outlet in the longitudinal direction, the tops of the first peaks and the tops of the second peaks are offset from each other in the longitudinal direction.

[0008] According to one aspect of this disclosure, a sheet storage box with excellent sheet removal capabilities can be provided without using a resin film.

[0009] This figure shows a sheet storage box according to an embodiment. This figure shows a sheet stack housed in the sheet storage box. This is a view of the sheet storage box according to an embodiment from the top side. This figure shows only the outlet in Figure 3.

[0010] Embodiments of this disclosure will be described below with reference to the drawings. In each drawing, unless otherwise specified, the same or corresponding components may be denoted by the same reference numerals and their descriptions may be omitted. Also, for ease of understanding, the scale of each component in the drawings may differ from that of the actual components. Furthermore, in this specification, a three-dimensional Cartesian coordinate system with three axial directions (X, Y, and Z directions) is used, with the longitudinal direction of the sheet storage box being the X direction, the short direction (depth direction) being the Y direction, and the height direction being the Z direction.

[0011] Figure 1 shows a sheet storage box according to an embodiment of the present disclosure, and Figure 2 shows a sheet stack housed in the sheet storage box. In this embodiment, the sheets S are housed in a box 10 that constitutes the sheet storage box.

[0012] As shown in Figure 1, the sheet storage box 100 according to this embodiment is composed of a box body 10 formed in a substantially rectangular parallelepiped (including a cube) shape. The box body 10 has a top surface 11, a bottom surface 12, a pair of side surfaces 13 and 14, and a pair of end surfaces 15 and 16. The top surface 11 and the bottom surface 12 face each other in the height direction (Z direction), the pair of side surfaces 13 and 14 face each other in the short direction (Y direction), and the pair of end surfaces 15 and 16 face each other in the long direction (X direction).

[0013] The material of the box body 10 is not limited; for example, base paper made primarily from pulp can be used. Here, base paper refers to a hard, thick paper that serves as the material for assembling the box body 10. The pulp composition of the base paper is not particularly limited; for example, the pulp content can be 50% by mass or more, preferably 90% by mass or more, and more preferably 100% by mass. In this embodiment, coated cardboard made from virgin pulp, recycled paper pulp, etc., is used as the base paper.

[0014] Furthermore, while there are no restrictions on the basis weight of the base paper, from the perspective of ensuring sufficient strength to withstand use, the basis weight of the base paper should be 200 g / m². ２ More than 500g / m ２ The following, preferably 230 g / m² ２ 480g / m or more ２ The following, and more preferably 270 g / m² ２ More than 470g / m ２ The following applies. In this specification, basis weight is measured in accordance with the provisions of JIS P 8124 (2011).

[0015] The thickness of the base paper is not particularly limited, and the paper thickness measured under the conditions of JIS P 8111 (1998) can be used. For example, if the base paper is coated cardboard, the paper thickness of the base paper can be 0.1 mm or more and 3 mm or less, preferably 0.3 mm or more and 2 mm or less, and more preferably 0.5 mm or more and 1 mm or less.

[0016] The dimensions of the box 10 are not limited and can be determined by the quantity and dimensions of the sheets S to be stored. For example, the length of the box 10 in the longitudinal direction (X direction) can be 100 mm or more and 300 mm or less, preferably 150 mm or more and 280 mm or less.

[0017] Also, the width of the box body 10 in the short side direction (Y direction) can be 100 mm or more and 150 mm or less, preferably 100 mm or more and 130 mm or less. Further, the height of the box body 10 in the height direction (Z direction) can be 30 mm or more and 150 mm or less, preferably 40 mm or more and 100 mm or less.

[0018] A plurality of laminated sheets S are accommodated in the box body 10. In the present embodiment, the plurality of sheets S accommodated in the box body 10 are constituted by a sheet laminate SL in which the plurality of sheets S are laminated in the lamination direction (Z direction) (FIG. 2).

[0019] The material of the sheet S is not particularly limited, and for example, sheets such as paper, non-woven fabric or cloth can be used, and preferably a paper sheet (hereinafter referred to as a paper sheet). A known composition in the paper sheet can be used for the pulp composition. The blending ratio of the pulp can be, for example, 50% by mass or more, preferably 90% by mass or more, and more preferably 100% by mass.

[0020] Also, the basis weight of the sheet S is not particularly limited, but depending on the ply number, in the case of paper, it is 5 g / m ２ or more and 80 g / m ２ or less, and in the case of non-woven fabric, it is 20 g / m ２ or more and 100 g / m ２ or less is desirable. The basis weight is measured in accordance with the provisions of JIS P 8124 (2011).

[0021] Also, the thickness of the sheet S is not particularly limited, and the paper thickness measured in the environment of JIS P 8111 (1998) can be adopted. For example, the paper thickness of the paper sheet constituting the sheet S can be 1 ply (in the case of 2 plies, per 2 plies), 50 μm or more and 500 μm or less, preferably 60 μm or more and 330 μm or less.

[0022] The form of sheet S is not particularly limited and can be applied to items such as tissue paper, toilet paper, paper towels, kitchen paper, baby or adult diapers, and sanitary napkins. Note that sanitary tissues such as paper towels and tissue paper also include sanitary tissues containing moisturizing ingredients (e.g., lotion tissues). Furthermore, sheet S can be used for industrial, household, or portable purposes.

[0023] The number of plies in sheet S can be one or more, preferably one ply or two plies (two layers). The shape of sheet S is not particularly limited, but for example, it is preferable that the shape of a one-ply or two-ply sheet when folded is rectangular in plan view.

[0024] The dimensions of the sheet S are, for example, in the case of tissue paper, 60 to 240 mm in width in the CD direction, 130 to 250 mm in width in the MD direction, and 20 to 110 mm or less in height. The number of plies is preferably one or more, and more preferably two.

[0025] The form of the sheet laminate SL is not particularly limited, and examples include a laminate in which each sheet S is folded and stacked alternately (a so-called pop-up type sheet laminate SL), a laminate in which multiple sheets (or multiple sets) of sheets S are simply stacked, or a laminate in which each sheet S is folded and stacked. However, from the viewpoint of pulling out one sheet S or one set at a time, the form of the sheet laminate SL is a pop-up type sheet laminate SL.

[0026] The dimensions of the sheet laminate SL are, for example, in the case of paper towels, 80 mm to 280 mm in the longitudinal direction (X direction), 60 mm to 130 mm in the transverse direction (Y direction), and 20 mm to 140 mm in height in the stacking direction (Z direction). Such a sheet laminate can be manufactured, for example, by a rotary type or multi-stand type interfolder.

[0027] The sheet storage box 100 has an opening 20 that opens on the top surface 11 of the box body 10. The opening 20 is shaped so that the sheets S stored in the box body 10 can be pulled out from the top surface 11 side. The opening 20 has a contour shape that extends in the longitudinal direction (X direction) of the box body 10. The opening 20 is formed on the top surface 11 such that the center C of the opening 20 is located at the center G of the top surface 11 (see Figure 3).

[0028] In the pre-use stage, the sheet storage box 100 has a lid L that covers the dispensing opening 20, which is connected to the top surface 11 via perforations M. The lid L is configured to cover the ends 21, 22 and the central part 23 of the dispensing opening 20 (Figures 3 and 4). Here, the central part 23 of the dispensing opening 20 represents an area or range of 30% to 60% of the entire area of ​​the dispensing opening 20, including the centroid of the dispensing opening 20 (center G of the top surface 11).

[0029] The areas corresponding to the ends 21 and 22 of the lid L may be provided with triggers 30 and 40, respectively, formed by semicircular notches (Figures 3 and 4). When in use, the lid L is detached by placing a finger on the trigger 30 or trigger 40 on the lid L and tearing open the perforations M, thereby creating an opening 20 on the top surface 11. This allows the sheet S inside the box 10 to be removed upwards through the opening 20.

[0030] In this embodiment, the semicircular notches forming the triggers 30 and 40 are positioned to protrude towards the ends 21 and 22 of the outlet 20, but the embodiment is not limited to this, and the semicircular notches may be positioned to protrude towards the central part 23 of the outlet 20. In other words, the orientation of the triggers 30 and 40 may be rotated 180° from the orientation shown in Figures 3 and 4, or it may be in any other orientation.

[0031] The perforations M are cut lines for separating the lid during use (see Figure 3). The perforations M consist of alternating cuts C1 and ties NC. When a tie NC breaks, the adjacent cuts C1 become a continuous cut. The ties indicate the uncut portion between two cuts.

[0032] Furthermore, a cut separate from cut C1 may be provided on the outside of the outlet 20, parallel to the tie NC. Such a separate cut may be arranged in a staggered pattern relative to cut C1.

[0033] In the perforation M, the length of cut C1 can be 1 mm or more and 20 mm or less, preferably 3 mm or more and 15 mm or less, and more preferably 5 mm or more and 10 mm or less. Also, the length of each tie NC can be 0.3 mm or more and 2.5 mm or less, preferably 0.5 mm or more and 1.5 mm or less, and more preferably 0.8 mm or more and 1.2 mm or less.

[0034] The tie-cut ratio of the perforation M1 (the ratio of the length of tie NC to the length of cut C1) is not particularly limited, but can be 0.05 or more and 0.3 or less, preferably 0.07 or more and 0.25 or less, and more preferably 0.1 or more and 0.2 or less.

[0035] In this embodiment, the outlet 20 is surrounded by a first edge 20A and a second edge 20B. The first edge 20A is located on one end 11A side in the short direction (Y direction) of the top surface 11 with respect to the first virtual center line V1. The second edge 20B is located on the other end 11B side in the short direction (Y direction) of the top surface 11 with respect to the first virtual center line V1. Here, the first virtual center line V1 represents a virtual line that passes through the center G of the top surface 11 and extends in the longitudinal direction (X direction).

[0036] The first edge 20A has a plurality of first peaks M1 and a plurality of first valleys R1 with respect to the first virtual center line V1. In this embodiment, the plurality of first peaks M1 are composed of peaks M11 and M12 at the ends 21 and 22 in the longitudinal direction (X direction) of the outlet, and a peak M13 at the central part 23 of the outlet. The plurality of first valleys R1 are composed of a valley R11 between peaks M11 and M13, and a valley R12 between peaks M12 and M13 (see Figure 3).

[0037] The second edge 20B has a plurality of first peak portions M2 and a plurality of first valley portions R2 with respect to the first virtual center line V1. In the present embodiment, the plurality of first peak portions M2 are composed of peak portions M21 and M22 at the longitudinal direction (X direction) ends 21 and 22 of the outlet and a peak portion M23 at the central portion 23 of the outlet. The plurality of first valley portions R2 are composed of a valley portion R21 between the peak portion M21 and the peak portion M23 and a valley portion R22 between the peak portion M22 and the peak portion M23 (see FIG. 3).

[0038] The first peak portion M1 and the second peak portion M2 face each other in the short direction (Y direction). In the present embodiment, in the short direction (Y direction), the peak portion M11 and the peak portion M21 face each other, the peak portion M12 and the peak portion M22 face each other, and the peak portion M13 and the peak portion M23 face each other.

[0039] At the longitudinal direction (X direction) ends 21 and 22 of the outlet 20, the top T1 of the first peak portion M1 and the top T2 of the second peak portion M2 are arranged so as to be displaced from each other in the longitudinal direction (X direction). In other words, the top T1 of the first peak portion M1 and the top T2 of the second peak portion M2 are arranged so as not to face each other along the short direction. In the present embodiment, at the ends 21 and 22 of the outlet 20, the tops T11 and T12 of the peak portions M11 and M12 and the tops T21 and T22 of the peak portions M21 and M22 are arranged with a displacement width D1 in the longitudinal direction (X direction) (see FIG. 4).

[0040] The displacement width D1 in the longitudinal direction (X direction) between the tops T11 and T12 of the peak portions M11 and M12 and the tops T21 and T22 of the peak portions M21 and M22 at the ends 21 and 22 of the outlet 20 is preferably 8 mm or more and 20 mm or less, more preferably 8 mm or more and 18 mm or less, and still more preferably 9 mm or more and 16 mm or less.

[0041] The first valley portion R1 and the second valley portion R2 face each other in the short direction (Y direction). In the present embodiment, in the short direction (Y direction), the valley portion R11 and the valley portion R21 face each other, and the valley portion R12 and the valley portion R22 face each other.

[0042] The bottom B1 of the first valley R1 and the bottom B2 of the second peak M2 are offset from each other in the longitudinal direction (X direction). In other words, the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 are not positioned to face each other along the short direction. In this embodiment, the bottom B11 of the valley R11 and the bottom B21 of the valley R21 are positioned with a displacement width D2 in the longitudinal direction (X direction) (see Figure 4).

[0043] The longitudinal (X-direction) displacement width D2 between the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 is preferably 3 mm or more and 15 mm or less, more preferably 4 mm or more and 14 mm or less, and even more preferably 5 mm or more and 13 mm or less.

[0044] Furthermore, the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 are arranged with a displacement width D4 in the short-side direction (Y direction) (see Figure 4). The distance D3 in the short-side direction (Y direction) between the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 is preferably 3 mm or more and 15 mm or less, more preferably 4 mm or more and 14 mm or less, and even more preferably 5 mm or more and 13 mm or less.

[0045] The first valley R1 has a valley R11 on one end 21 side in the longitudinal direction (X direction) of the outlet 20 and a valley R12 on the other end 22 side in the longitudinal direction (X direction). The second valley R2 has a valley R21 on one end 21 side in the longitudinal direction (X direction) of the outlet 20 and a valley R22 on the other end 22 side in the longitudinal direction (X direction). The valleys R11 and R21 on one end 21 side are examples of the first end side valleys, and the valleys R12 and R22 on the other end 22 side are examples of the second end side valleys.

[0046] In the first valley R1, the bottom B11 of valley R11 and the bottom B12 of valley R12 are offset from each other in the short direction (Y direction). In other words, the bottom B11 of valley R11 and the bottom B12 of valley R12 are not positioned to face each other along the long direction (X direction). In this embodiment, the bottom B11 of valley R11 and the bottom B12 of valley R12 are positioned with a displacement width D4 in the short direction (Y direction).

[0047] In the second valley R2, the bottom B21 of valley R21 and the bottom B22 of valley R22 are offset from each other in the short direction (Y direction). In other words, the bottom B21 of valley R21 and the bottom B22 of valley R22 are not positioned to face each other along the long direction (X direction). In this embodiment, the bottom B21 of valley R21 and the bottom B22 of valley R22 are positioned with a displacement width D4 in the short direction (Y direction).

[0048] The peak T1 of the first peak M1 and the peak T2 of the second peak M2 are formed by curves having a radius (R). In this specification, "R" refers to the radius of curvature. The radius (R) of the peak T1 of the first peak M1 and the peak T2 of the second peak M2 is preferably 3 mm to 22 mm, more preferably 4 mm to 21 mm, and even more preferably 5 mm to 20 mm.

[0049] Furthermore, it is preferable that the radius (R) of the top T1 of the first peak M1 and the top T2 of the second peak M2 are different. In this embodiment, the radius (R) of the top T11 of the peak M11 at the first edge 20A is 7 mm, and the radius (R) of the top T21 of the peak M21 at the second edge 20B is 18 mm. Also, the radius (R) of the top T12 of the peak M12 at the first edge 20A is 18 mm, and the radius (R) of the top T22 of the peak M22 at the second edge 20B is 7 mm.

[0050] The bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 are composed of curves having a radius (R). The radius (R) of the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 is preferably 1 mm to 30 mm, more preferably 2 mm to 28 mm, and even more preferably 3 mm to 26 mm.

[0051] Furthermore, it is preferable that the radius (R) of the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 are different. In this embodiment, the radius (R) of the bottom B11 of the valley R11 at the first edge 20A is 25 mm, and the radius (R) of the bottom B21 of the valley R21 at the second edge 20B is 5 mm. Also, the radius (R) of the bottom B12 of the valley R12 at the first edge 20A is 5 mm, and the radius (R) of the bottom B22 of the valley R22 at the second edge 20B is 25 mm.

[0052] In the central part 23 of the outlet 20, the top T1 of the first peak M1 and the top T2 of the second peak M2 are offset from each other in the longitudinal direction (X direction). In other words, in the central part 23 of the outlet 20, the top T13 of the peak M13 and the top T23 of the peak M23 are not positioned to face each other along the short direction. In this embodiment, in the central part 23 of the outlet 20, the top T13 of the peak M13 and the top T23 of the peak M23 are positioned with a displacement width D5 in the longitudinal direction (X direction).

[0053] The longitudinal (X-direction) displacement width D5 between the peak T13 of the peak M13 and the peak T23 of the peak M23 in the central part 23 of the outlet 20 is preferably 1 mm or more and 10 mm or less, more preferably 2 mm or more and 9 mm or less, and even more preferably 3 mm or more and 8 mm or less.

[0054] Furthermore, the ends 21 and 22 of the outlet 20 have a third peak M3 with respect to the second virtual centerline V2. The second virtual centerline V2 is a virtual line that passes through the center G of the top surface 11 and extends in the short direction (Y direction). The third peak M3 is composed of a peak M31 on the end 21 side of the outlet 20 and a peak M32 on the end 22 side of the outlet 20. Peaks M31 and M32 face each other in the longitudinal direction (X direction).

[0055] The top T3 of the third peak M3 is composed of a top T31 located on one end 11C side in the longitudinal direction (X direction) of the top surface 11 and a top T32 located on the other end 11D side in the longitudinal direction (X direction) of the top surface 11 (see Figure 3).

[0056] The peak T3 of the third peak M3 is formed by a curve with a radius (R). The radius (R) of the peak T3 of the third peak M3 is preferably 1 mm to 10 mm, more preferably 2 mm to 8 mm, and even more preferably 3 mm to 6 mm.

[0057] Furthermore, it is preferable that the radius (R) of the top T3 of the third peak M3 is smaller than that of the top T1 of the first peak M1 and the top T2 of the second peak M2. In this embodiment, the radius (R) of the top T11 of the peak M11 at the first edge 20A is 7 mm, the radius (R) of the top T21 of the peak M21 at the second edge 20B is 18 mm, while the radius (R) of the top T3 of the third peak M3 is 5 mm.

[0058] Furthermore, it is preferable that the first edge 20A and the second edge 20B are point-symmetric with respect to the center G of the top surface 11. That is, the shape of the second edge 20B corresponds to the shape obtained by rotating the first edge 20A by 180 degrees.

[0059] In this embodiment, as described above, the first peak M1 and the second peak M2 face each other in the short direction (Y direction), and the top T1 of the first peak M1 and the top T2 of the second peak M2 are offset from each other in the longitudinal direction (X direction) at the ends 21 and 22 of the outlet 20. This makes it easier to open the outlet 20 from the ends 21 and 22 of the outlet 20 which are expanded in the short direction (Y direction), and also makes it less likely for the pulled-out sheet S to tear. In addition, the pulled-out sheet S is more easily secured at the ends 21 and 22 of the outlet 20, thus maintaining the pop-up property of the sheet S and preventing the sheet S from falling down.

[0060] Furthermore, by ensuring that the longitudinal (X-direction) displacement D1 between the top T1 of the first peak M1 and the top T2 of the second peak M2 is 8 mm or more and 20 mm or less, the opening of the outlet 20 becomes easier, the sheet S is less likely to tear, the pop-up property is maintained, and the sheet S is prevented from falling down, thus reliably achieving these effects.

[0061] Furthermore, because the first valley R1 and the second valley R2 face each other in the short direction (Y direction), and the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 are offset from each other in the long direction (X direction), the sheet S is less likely to tear when pulled out, even if the space between the first valley R1 and the second valley R2, which face each other in the short direction (Y direction), is narrow. In addition, the sheet S is more likely to be caught between the first valley R1 and the second valley R2 when pulled out, thus maintaining the pop-up property of the sheet S and further preventing the sheet S from falling down.

[0062] Furthermore, by ensuring that the longitudinal (X-direction) displacement width D2 between the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 is 5 mm or more and 18 mm or less, the opening of the outlet 20 becomes easier, the sheet S is less likely to tear, the pop-up property is maintained, and the sheet S does not fall down, thus reliably achieving these effects.

[0063] Furthermore, by having a distance D3 in the short direction (Y direction) between the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 be between 3 mm and 15 mm, the opening of the outlet 20 becomes easier, the sheet S becomes less likely to tear, the pop-up property is maintained, and the effect of preventing the sheet S from falling down is more reliably obtained.

[0064] Furthermore, since the bottom B21 of valley R21 (the valley on the first end side) and the bottom B22 of valley R22 (the valley on the second end side) are offset from each other in the short direction (Y direction), the sheet S that is pulled out is more easily locked between the first valley R1 and the second valley R2, thus maintaining the pop-up property of the sheet S and reliably preventing the sheet S from falling down.

[0065] Furthermore, because the radius (R) is different between the top T1 of the first peak M1 and the top T2 of the second peak M2, it becomes easier to open the outlet 20 from the ends 21 and 22 of the outlet 20 which is expanded in the shorter direction (Y direction), and the sheet S being pulled out becomes even less likely to tear.

[0066] Furthermore, because the radius (R) of the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 are different, the sheet S is less likely to tear when pulled out, and is more likely to be locked between the first valley R1 and the second valley R2. This maintains the pop-up property of the sheet S and also prevents the sheet S from falling down.

[0067] Furthermore, because the top T1 of the first peak M1 and the top T2 of the second peak M2 are offset from each other in the longitudinal direction (X direction) at the central part 23 of the outlet 20, it becomes easier to insert fingers from the central part 23 of the outlet 20, which is expanded in the short direction (Y direction), thus making it easier to remove the sheet S. Moreover, the offset in the longitudinal direction (X direction) between the top T1 of the first peak M1 and the top T2 of the second peak M2, and the offset in the longitudinal direction (X direction) between the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 can be adjusted.

[0068] Furthermore, by ensuring that the longitudinal (X-direction) displacement width D5 between the top T1 of the first peak M1 and the top T2 of the second peak M2 in the central part 23 of the outlet 20 is 1 mm or more and 10 mm or less, the sheet S can be easily removed, and the effect of adjusting the longitudinal (X-direction) displacement between the top T1 of the first peak M1 and the top T2 of the second peak M2, and the longitudinal (X-direction) displacement between the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 is reliably obtained.

[0069] Furthermore, because the radius (R) of the top T3 of the third peak M3 is smaller than the radius (R) of the top T1 of the first peak M1 and the radius (R) of the top T2 of the second peak M2, the sheet S is less likely to tear at the ends 21 and 22 of the outlet 20, while also allowing adjustment of the longitudinal (X-direction) misalignment between the top T1 of the first peak M1 and the top T2 of the second peak M2.

[0070] Furthermore, because the first edge 20A and the second edge 20B constituting the outlet 20 are point-symmetric with respect to the center G of the top surface 11, it becomes easier to form the first peak M1 and the second peak M2 whose tops are offset from each other in the longitudinal direction (X direction), and the first valley R1 and the second valley R2 whose bottoms are offset from each other in the longitudinal direction (X direction).

[0071] The present disclosure will be further described in detail below using examples. The examples and comparative examples were evaluated by the following tests.

[0072] <Sheet storage box (test specimen)> The test specimen uses base paper with a basis weight of 310 g / m². ２ A box body 10 was made from gray-coated cardboard with dimensions of approximately 44 mm in height, approximately 229 mm in length in the longitudinal direction (X direction), and approximately 110 mm in width in the transverse direction (Y direction). As shown in Figure 1, an outlet 20 was formed at the center G of the top surface 11 of the box body 10, extending in the longitudinal direction (X direction) of the top surface 11.

[0073] <Sheet (Tissue Paper)> Sheet S is a laminated tissue paper (basis weight: 10.7 g / m²) that is folded alternately and can be pulled out one set at a time in a pop-up fashion. ２ The paper used had a thickness of 110 μm, 2 plies, 200 sets (400 sheets), and dimensions of approximately 40 mm in height, 197 mm in width in the CD direction, and 207 mm in width in the MD direction. The sheets S were then placed in the box 10 so that the stacking direction was in the height direction (Z direction) of the sheet storage box 100 (Figure 1).

[0074] [Pull-out resistance value] A double clip (width 25 mm) was attached to the end of the sheet S visible from the outlet 20 of the sheet storage box 100, and the sheet was pulled out vertically at a speed of approximately 0.2 m / s using a push-pull gauge (IMADA Digital Force Gauge Z2-20N), and the resistance value (peak) at the time of pull-out was measured. Measurements were taken five times each for sets 1-65, sets 66-135, and sets 136-200, and the average value was calculated as the pull-out resistance value. Pull-out resistance values ​​were evaluated as follows: if the pull-out resistance value was less than 1.7 N, the pull-out performance was rated as ○ (good), and if it was 1.7 N or higher, the pull-out performance was rated as × (poor).

[0075] [Sheet Dropping] We pulled out 1 to 200 sets of sheets and checked the number of sets and the number of times sheets dropped.

[0076] [Sheet tearing] We pulled out 1 to 200 sets of sheets and checked the number of sets and the number of times tears occurred.

[0077] [Ease of removing the first set] The ease of removing the first set was evaluated according to the following criteria. [Evaluation criteria] ○: Easy to remove △: No tearing, but sheets other than the second set fall out, difficult to remove ×: Tearing occurs

[0078] [Ease of tearing open the opening] The ease of tearing (opening) the opening was evaluated according to the following criteria. [Evaluation criteria] ○: Can be easily torn open △: Difficult to tear open, or can be torn but the surface of the carton peels off ×: Cannot be torn open, or can be torn but the opening tears

[0079] [Pop-up performance] The pop-up performance of each sheet was evaluated according to the following criteria. [Evaluation criteria] ○: The sheet stands upright at the dispensing opening △: The sheet may fall over at the dispensing opening ×: The sheet falls over at the dispensing opening Furthermore, the pop-up performance was evaluated based on the number of pop-up defects in sets 1-65, sets 66-135, and sets 136-200. [Evaluation criteria] ○: Two or fewer × or △ in the evaluation of each sheet △: Three to four × or △ in the evaluation of each sheet ×: Five or more × or △ in the evaluation of each sheet

[0080] Examples and comparative examples will be described below.

[0081] [Example 1] As shown in Figure 3, the longitudinal (X-direction) displacement width (end peak displacement spacing) D1 between the top T1 of the first peak M1 and the top T2 of the second peak M2 at the ends 21 and 22 of the outlet 20 is 14.7 mm, and the longitudinal (X-direction) displacement width (valley displacement spacing) D2 between the bottom B1 of the first valley R1 and the bottom B2 of the second valley R2 is 13.2 mm, and the first valley R1 The distance D3 between the bottom B1 of the first valley and the bottom B2 of the second valley R2 in the short direction (Y direction) (distance between valleys on both sides in the short direction) is 8.4 mm, the displacement width D4 between the bottom B21 of the valley R21 and the bottom B22 of the valley R22 in the short direction (Y direction) (distance between valleys on one side in the short direction) is 6.1 mm, and the peak T13 of the peak M13 and the peak M23 in the central part 23 of the outlet 20 A test specimen was prepared and evaluated having an outlet 20 with a longitudinal (X-direction) displacement width (central peak displacement interval) D5 from T23 of 6.2 mm, the radius (R) of the top T1 of the first peak M1 and the radius (R) of the top T2 of the second peak M2 at the ends 21 and 22 of the outlet 20 being 7 mm or 18 mm, the radius (R) of the top T3 of the third peak M3 at the ends 21 and 22 of the outlet 20 being 5 mm, the radius (R) of the first valley R1 between the first peak M1 at the ends 21 and 22 of the outlet 20 and the peak M13 of the central part 13 of the outlet 20 and the radius (R) of the second valley R2 between the second peak M2 at the ends 21 and 22 of the outlet 20 and the peak M23 of the central part 23 of the outlet 20 being 5 mm or 25 mm. The conditions and results of Example 1 are shown in Table 1.

[0082] [Example 2] A test specimen was prepared and evaluated in the same manner as in Example 1, except that it had an outlet 20 with an end peak displacement spacing D1 of 14.9 mm, a valley displacement spacing D2 of 9.2 mm, valley spacing D3 on both sides in the short direction of 12 mm, valley spacing D4 on one side in the short direction of 2.5 mm, and a central peak displacement spacing D5 of 3.5 mm. The conditions and results of Example 2 are shown in Table 1.

[0083] [Comparative Example 1] A sheet storage box was fabricated and evaluated, which was equipped with a window film having a slit formed in an elliptical opening. The results of Comparative Example 1 are shown in Table 1.

[0084] [Comparative Example 2] The test specimen was prepared and evaluated in the same manner as in Comparative Example 1, except that a window film was not provided in the elliptical opening. The conditions and results for Comparative Example 2 are shown in Table 1.

[0085]

[0086] As shown in Table 1, Examples 1 and 2, like Comparative Example 1, had an easily accessible opening for the dispensing port, easy dispensing of sheets from the first to the last set, no sheets falling in or tearing, and good pop-up properties. On the other hand, Comparative Example 2 experienced sheet tearing and had poor pop-up properties.

[0087] Although embodiments of this disclosure have been described above, this disclosure is not limited to any particular embodiment, and various modifications and changes are possible within the scope of the invention as described in the claims.

[0088] The embodiments disclosed above include, for example, the following aspects:

[0089] A first aspect of the present disclosure provides a sheet storage box comprising a rectangular parallelepiped box for accommodating a plurality of stacked sheets, and an outlet opening on the top surface of the box and extending in the longitudinal direction of the top surface, wherein the outlet is surrounded by a first edge located on one end side in the short direction of the top surface and a second edge located on the other end side in the short direction of the top surface with respect to a first virtual center line extending in the longitudinal direction through the center of the top surface, the first edge having a plurality of first peaks and a plurality of first valleys with respect to the first virtual center line, the second edge having a plurality of second peaks and a plurality of second valleys with respect to the first virtual center line, the first peaks and the second peaks facing each other in the short direction, and at both ends of the outlet in the longitudinal direction, the tops of the first peaks and the tops of the second peaks are offset from each other in the longitudinal direction.

[0090] In the first embodiment, the first and second peaks face each other in the short direction, and the tops of the first and second peaks are offset from each other in the longitudinal direction at both ends of the outlet. This makes it easier to open the outlet from the ends of the outlet that are expanded in the short direction, and also makes it less likely for the pulled-out sheet to tear. In addition, the pulled-out sheet is more easily secured at the ends of the outlet, thus maintaining the pop-up property of the sheet and preventing the sheet from falling down.

[0091] A second aspect of the present disclosure provides a sheet storage box according to the first aspect, wherein at both ends of the outlet, the longitudinal displacement between the top of the first peak and the top of the second peak is 8 mm or more and 20 mm or less. In the second aspect, the longitudinal displacement between the top of the first peak and the top of the second peak being 8 mm or more and 20 mm or less ensures that the outlet can be opened easily, the sheets are less likely to tear, the pop-up function is maintained, and the sheets do not fall out.

[0092] A third aspect of the present disclosure provides a sheet storage box according to the first or second aspect, wherein the first valley and the second valley are opposite each other in the short direction, and the bottom of the first valley and the bottom of the second valley are offset from each other in the longitudinal direction.

[0093] In the third embodiment, the first and second valleys face each other in the short direction, and the bottoms of the first and second valleys are offset from each other in the long direction. This makes it less likely for the pulled-out sheet to tear, even if the space between the first and second valleys facing each other in the short direction is narrow. Furthermore, the pulled-out sheet is more easily secured between the first and second valleys, thus maintaining the pop-up property of the sheet and preventing it from falling down.

[0094] A fourth aspect of the present disclosure provides a sheet storage box according to the third aspect, wherein the longitudinal displacement between the bottom of the first valley and the bottom of the second valley is 5 mm or more and 18 mm or less. In the fourth aspect, the longitudinal displacement between the bottom of the first valley and the bottom of the second valley being 5 mm or more and 18 mm or less ensures that the opening of the dispensing port is made easier, the sheets are less likely to tear, the pop-up function is maintained, and the sheets are prevented from falling out.

[0095] A fifth aspect of the present disclosure provides a sheet storage box according to any one of the first to fourth aspects, wherein the distance in the short direction between the bottom of the first valley and the bottom of the second valley is 3 mm or more and 15 mm or less. In the fifth aspect, the distance in the short direction between the bottom of the first valley and the bottom of the second valley being 3 mm or more and 15 mm or less makes it easier to open the dispensing opening, makes it less likely for the sheet to tear, maintains pop-up functionality, and more reliably prevents the sheet from falling out.

[0096] A sixth aspect of the present disclosure provides a sheet storage box according to any one of the first to fifth aspects, wherein at least one of the first and second valleys has a first end-side valley on one end of the outlet in the longitudinal direction and a second end-side valley on the other end of the outlet in the longitudinal direction, and the bottom of the first end-side valley and the bottom of the second end-side valley are offset from each other in the short direction.

[0097] In the sixth embodiment, the bottom of the first end side valley and the bottom of the second end side valley are offset from each other in the shorter direction, which makes it easier for the pulled-out sheet to be further secured between the first and second valleys, thereby maintaining the pop-up property of the sheet and reliably preventing the sheet from falling down.

[0098] A seventh aspect of the present disclosure provides a sheet storage box according to any one of the first to sixth aspects, wherein the radius (R) of the top of the first peak and the top of the second peak are different. In the seventh aspect, the difference in radius (R) between the top of the first peak and the top of the second peak makes it easier to open the dispensing opening from the end of the dispensing opening that extends in the short direction, and makes the dispensing sheet less likely to tear.

[0099] An eighth aspect of the present disclosure provides a sheet storage box according to any one of the first to seventh aspects, wherein the bottom of the first valley and the bottom of the second valley have different radii (R). In the eighth aspect, the difference in radii between the bottom of the first valley and the bottom of the second valley makes it easier for the pulled-out sheet to be locked between the first and second valleys while being less likely to tear, thus maintaining the pop-up capability of the sheet and preventing the sheet from falling down.

[0100] A ninth aspect of the present disclosure provides a sheet storage box according to any one of the first to eighth aspects, wherein in the central part of the outlet, the top of the first peak and the top of the second peak are offset from each other in the longitudinal direction.

[0101] In the ninth embodiment, the tops of the first and second peaks are offset from each other in the longitudinal direction at the center of the dispensing opening, which facilitates the insertion of fingers from the center of the dispensing opening that expands in the short direction, thus facilitating the removal of the sheet. Furthermore, the longitudinal offset between the tops of the first and second peaks and the longitudinal offset between the bottoms of the first and second valleys can be adjusted.

[0102] A tenth aspect of the present disclosure provides a sheet storage box according to any one of the first to ninth aspects, wherein in the central part of the outlet, the longitudinal displacement between the top of the first peak and the top of the second peak is 1 mm or more and 10 mm or less.

[0103] In the tenth embodiment, the longitudinal displacement between the top of the first peak and the top of the second peak in the central part of the outlet is 1 mm or more and 10 mm or less, which makes it easier to remove the sheet and reliably provides the effect of adjusting the longitudinal displacement between the top of the first peak and the top of the second peak, and the longitudinal displacement between the bottom of the first valley and the bottom of the second valley.

[0104] An eleventh aspect of the present disclosure provides a sheet storage box according to any one of the first to tenth aspects, wherein both ends of the outlet have a third peak with respect to a second virtual center line extending through the center in the short direction, and the top of the third peak has a smaller radius (R) than the tops of the first peak and the second peak.

[0105] In the eleventh embodiment, the radius of the top of the third peak is smaller than the radius of the top of the first peak and the radius of the top of the second peak, which makes it less likely for the sheet to tear at the edge of the outlet, while also allowing adjustment of the longitudinal displacement between the top of the first peak and the top of the second peak.

[0106] A twelfth aspect of the present disclosure provides a sheet storage box according to any one of the first to eleventh aspects, wherein the first edge and the second edge are point-symmetric with respect to the center.

[0107] In the twelfth embodiment, the first edge and the second edge are point-symmetric with respect to the center of the top surface, which facilitates the formation of first and second peaks that are offset from each other in the longitudinal direction at the top, and first and second valleys that are offset from each other in the longitudinal direction at the bottom.

[0108] This application claims priority based on Japanese Patent Application No. 2025-009565, filed on 23 January 2025, the entire contents of which are incorporated herein by reference.

[0109] 100 Sheet Storage Box S Sheet SL Sheet Laminate 10 Box Body 11 Top G Center V1 First Virtual Centerline V2 Second Virtual Centerline 12 Bottom 13, 14 Sides 15, 16 End Face 20 Outlet C Center 20A First Edge M1 First Peak M11, M12, M13 Peak T1, T11, T12 Top R1 First Valley R11, R12 Valley B1, B11, B12 Bottom 20B Second Edge M2 Second Peak M21, M22, M23 Peak T2, T21, T22 Top R2 Second Valley R21, R22 Valley B2, B21, B22 Bottom M3 Third Peak M31, M32 mountain section; T3, T31, T32 summit.

Claims

1. A sheet storage box comprising: a rectangular parallelepiped box body for accommodating multiple stacked sheets; and an outlet opening on the top surface of the box body and extending in the longitudinal direction of the top surface, wherein the outlet is surrounded by a first edge located on one end side in the short direction of the top surface with respect to a first virtual center line extending in the longitudinal direction through the center of the top surface and a second edge located on the other end side in the short direction of the top surface; the first edge has a plurality of first peaks and a plurality of first valleys with respect to the first virtual center line; the second edge has a plurality of second peaks and a plurality of second valleys with respect to the first virtual center line; the first peaks and the second peaks face each other in the short direction; and at both ends of the outlet in the longitudinal direction, the tops of the first peaks and the tops of the second peaks are offset from each other in the longitudinal direction.

2. At both ends of the outlet, the longitudinal displacement between the top of the first peak and the top of the second peak is 8 mm or more and 20 mm or less, the sheet storage box according to claim 1.

3. The sheet storage box according to claim 1, wherein the first valley and the second valley are opposite each other in the short direction, and the bottom of the first valley and the bottom of the second valley are offset from each other in the longitudinal direction.

4. The sheet storage box according to claim 3, wherein the longitudinal displacement between the bottom of the first valley and the bottom of the second valley is 5 mm or more and 18 mm or less.

5. The sheet storage box according to claim 3, wherein the distance in the short direction between the bottom of the first valley and the bottom of the second valley is 3 mm or more and 15 mm or less.

6. The sheet storage box according to claim 1, wherein at least one of the first valley and the second valley has a first end-side valley on one end of the outlet in the longitudinal direction and a second end-side valley on the other end of the outlet in the longitudinal direction, and the bottom of the first end-side valley and the bottom of the second end-side valley are offset from each other in the short direction.

7. The sheet storage box according to claim 1, wherein the radius (R) is different at the top of the first peak and the top of the second peak.

8. The sheet storage box according to claim 1, wherein the radius (R) is different at the bottom of the first valley and the bottom of the second valley.

9. The sheet storage box according to claim 1, wherein in the central part of the outlet, the top of the first peak and the top of the second peak are offset from each other in the longitudinal direction.

10. The sheet storage box according to claim 9, wherein in the central part of the outlet, the longitudinal displacement between the top of the first peak and the top of the second peak is 1 mm or more and 10 mm or less.

11. The sheet storage box according to claim 1, wherein both ends of the outlet have a third peak with respect to a second virtual center line extending in the short direction through the center, and the top of the third peak has a smaller radius (R) than the tops of the first peak and the second peak.

12. The sheet storage box according to any one of claims 1 to 9, wherein the first edge and the second edge are point-symmetric with respect to the center.

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