Storage box

Abstract

To provide a housing box that is enhanced in rigidity and can suppress ink from spreading when printing on an outer surface of the housing box.SOLUTION: A housing box 10 is in a substantially rectangular parallelepiped shape having six face parts which are a top face part 11, a bottom face part 13, a pair of short side face parts 21, 22, and a pair of long side face parts 12, 14. The pair of short side face parts 21, 22 consist of inner flaps 121, 141 and 122, 142, and outer flaps 111, 131 and 112 and 132, and a fiber orientation ratio (H / W) of a direction (W) orthogonal to a height direction (H) of the outer flaps 111, 131 and 112, 132, or the long side face parts 12, 14 to the height direction is 1.00 to 3.00. The top face part 11 and / or bottom face part 13 is provided with a break line D1 extending in a substantially length direction of the housing box 10, and a fiber orientation ratio (S / L) of the length direction (L) to a short direction (S) of the top face part 11 and / or bottom face part 13 is larger than 1.00.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a storage box for storing toilet paper.

Background Art

[0002] Conventionally, a storage box for storing toilet paper such as tissue paper is required to have a certain degree of rigidity so as to withstand the forces received during transportation and display when distributed as a product, and the forces applied to the storage box when using the toilet paper stored in the storage box.

[0003] For example, Patent Document 1 discloses an attempt to increase the rigidity of a storage box by providing a plurality of ruled lines on the surface portion constituting the storage box.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the storage box described in Patent Document 1, it is conceivable that in the manufacturing process, a device for forming ruled lines on the surface portion needs to be separately prepared, which is costly and time-consuming.

[0006] [[ID=*2]] Also, generally, printing is performed on the outer surface of the storage box to impart decoration, discrimination ability, etc. However, depending on the fiber orientation of the base paper constituting the storage box, the ink applied on the outer surface may bleed.

[0007] The object of the present invention is to provide a storage box that makes it possible to increase the rigidity (or strength) of the storage box without incurring the cost and effort of preparing a separate device, and that also makes it possible to improve the adhesion of ink when printing on the outer surface of the storage box. [Means for solving the problem]

[0008] The storage box according to the present invention is a storage box capable of storing sanitary paper, and the storage box has a substantially rectangular parallelepiped shape having six surfaces: a top surface, a bottom surface, a pair of short side surfaces, and a pair of long side surfaces, the pair of short side surfaces being composed of an inner flap and an outer flap, the fiber orientation ratio (H / W) of the outer flap or the long side surface in the direction perpendicular to the height direction (W) with respect to the height direction (H) is greater than 1.00 and less than 3.00, the top surface and / or the bottom surface are provided with dashed lines extending substantially along the longitudinal direction of the storage box, and the fiber orientation ratio (S / L) of the top surface and / or the bottom surface in the longitudinal direction (L) with respect to the short direction (S) is greater than 1.00. [Effects of the Invention]

[0009] According to the present invention, when manufacturing the base paper for a storage box, by setting the fiber orientation of the base paper, it is possible to increase the rigidity (or strength) of a desired area of ​​the surface of the storage box at low cost, without the cost and effort of separately preparing equipment for increasing rigidity (or strength). Furthermore, by defining the fiber orientation ratio of the base paper to satisfy predetermined conditions, it is possible to improve the ink adhesion when printing on the outer surface of the storage box. [Brief explanation of the drawing]

[0010] [Figure 1] This is an overall perspective view of a storage box according to the first embodiment of the present invention. [Figure 2] This is an exploded view of a storage box according to the first embodiment of the present invention. [Figure 3]This is a schematic side view of a carton supply device used in the assembly process of a storage box according to the first embodiment of the present invention, for removing one carton at a time from a bundle and placing it on a conveyor belt to transport it to a subsequent process. [Figure 4] This is an overall perspective view of a packaging body in which a storage unit is packaged and the packaged storage unit is packed, according to the first embodiment of the present invention. [Figure 5] This is a schematic diagram showing the carton transport section of the carton storage section of a carton supply device related to the assembly process of a storage box according to the first embodiment of the present invention. [Figure 6] This is a schematic diagram showing modified examples of the carton storage section and carton transport section of a carton supply device related to the assembly process of a storage box according to the first embodiment of the present invention. [Figure 7] Figure 6 is a schematic diagram showing the carton storage compartment when the carton has been removed. [Figure 8] This is a schematic cross-sectional view showing the supply of cartons from the carton storage section to the transport section of a carton supply device, relating to the assembly process of a storage box according to the first embodiment of the present invention. [Figure 9] Figure 4 is a cross-sectional view of the carton storage section from IX to IX. [Figure 10] This figure shows an example of a combination of shapes cut out from the long side of a storage box according to a second embodiment of the present invention. [Modes for carrying out the invention]

[0011] Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to Figures 1 to 10. However, the present invention is not limited to these embodiments.

[0012] In the description of this specification and the claims, in the case of the storage box according to the present invention, the "height direction" refers to the direction parallel to the edge for the inner flap of the storage box to bend, the "width direction" refers to the direction parallel to the edge for the outer flap of the storage box to bend, and the "length direction" refers to the direction perpendicular to the surface of the inner flap of the storage box. In the case of the box according to the package of the present invention (for example, the box for packaging the packaged storage body shown in FIG. 4 described later), the "height direction" refers to the direction perpendicular to the surface of the outer flap of the box, the "length direction" refers to the direction parallel to the edge for the outer flap of the box to bend, and the "width direction" refers to the direction in which the outer flap of the box extends. The "height direction", "width direction", and "length direction" are perpendicular to each other.

[0013] In addition, in the description of this specification and the claims, "rectangle" includes a square in addition to a rectangle, and "substantially rectangular parallelepiped" includes a cube in addition to a rectangular parallelepiped.

[0014] <First Embodiment> <Structure> FIG. 1 is an overall perspective view of a storage box according to the first embodiment of the present invention, and FIG. 2 is a developed view of the storage box according to the present embodiment.

[0015] The storage box 10 according to the present embodiment has a substantially rectangular parallelepiped shape. A tissue paper bundle P (hereinafter referred to as tissue paper, which is an example of toilet paper) is folded and stacked in the storage box 10, and the stacked tissue paper bundle is stored to form the storage body 10P. A printing portion G formed by printing with ink to impart decoration and distinctiveness is provided on the entire outer surface (entire outer side) of the storage box 10 (details will be described later). Hereinafter, ink, coating agents, etc. are collectively referred to as "coating materials".

[0016] As shown in FIGS. 1 and 2, the storage box 10 according to this embodiment includes two rectangular faces, i.e., the first face portion 11 and the third face portion 13 (the top face portion 11 and the bottom face portion 13 described later), two rectangular faces of the second face portion 12 and the fourth face portion 14 (the pair of long side face portions 12 and 14 described later), and two rectangular faces of a pair of first short side face portions 21 and second short side face portions 22. In this embodiment, the above-described printing portion G is provided over the entire outer surfaces of the six rectangular faces from the first face portion 11 to the fourth face portion 14 and the pair of first short side face portions 21 and second short side face portions 22. In the present invention, the printing portion (coating portion) G may be provided on a part rather than the entire outer surface of the storage box 10. Also, naturally, the storage box 10 before printing (that is, before providing the printing portion G) is also included in the present invention.

[0017] In this embodiment, as shown in FIG. 1, the first short side face portion 21 is composed of two inner flaps, i.e., the first inner flap 121 and the third inner flap 141, and two outer flaps, i.e., the first outer flap 111 and the third outer flap 131. Similarly to the configuration of the first short side face portion 21, the second short side face portion 22 is composed of two inner flaps, i.e., the second inner flap 122 and the fourth inner flap 142, and two outer flaps, i.e., the second outer flap 112 and the fourth outer flap 132.

[0018] Also, in the storage box 10 according to this embodiment, the first outer flap 111 is arranged so as to partially overlap the third outer flap 131, and the second outer flap 112 is arranged so as to partially overlap the fourth outer flap 132. The overlapping portions are adhered by an adhesive or the like. In the present invention, it is not limited to this. For example, the storage box 10 may be configured without providing the third outer flap 131 and / or the fourth outer flap 132, and the dimensions of the first outer flap 111 and / or the second outer flap 112 in the height direction may be made substantially the same as the dimensions of the storage box 10 in the height direction. A tab for inserting into the opening formed on the short side face side and the bottom face side of the storage box 10 may be provided on the first outer flap 111 and / or the second outer flap 112.

[0019] Furthermore, in this invention, on one surface of the storage box 10, the average orientation of the fibers constituting the base paper of the storage box 10 is aligned in a predetermined direction with respect to the height direction of the storage box 10. Details will be described later.

[0020] The first surface portion 11 (top surface portion) has a first edge L1 and a second edge L2 that are parallel to each other, and a fifth edge L5 and a sixth edge L6 that are parallel to each other and perpendicular to the first edge L1.

[0021] The second surface portion 12 (first long surface portion) has a third edge L3 parallel to the first edge L1, and mutually parallel seventh edges L7 and eighth edges L8 perpendicular to the first edge L1, and extends from the first edge L1 and bends at a right angle.

[0022] The third surface portion 13 (bottom surface portion) has a fourth edge L4 parallel to the third edge L3, and mutually parallel ninth edge L9 and tenth edge L10 perpendicular to the third edge L3, extending from the third edge L3 and bending at a right angle to face the first surface portion 11.

[0023] The fourth surface portion 14 (second long side portion) has mutually parallel 11th and 12th edges L11 and L12 that are perpendicular to the second edge L2, extending from the second edge L2 and bending at a right angle to face the second surface portion 12.

[0024] The first inner flap 121 extends from the seventh edge L7 of the second surface 12 and bends at a right angle, and the second inner flap 122 extends from the eighth edge L8 of the second surface 12 and bends at a right angle to face the first inner flap 121. Also, the third inner flap 141 extends from the eleventh edge L11 of the fourth surface 14 and bends at a right angle, and the fourth inner flap 142 extends from the twelfth edge L12 of the fourth surface 14 and bends at a right angle to face the third inner flap 141.

[0025] The first outer flap 111 extends from the fifth edge L5 of the first surface 11 and is bent at a right angle, and the second outer flap 112 extends from the sixth edge L6 of the first surface 11 and is bent at a right angle to face the first outer flap 111. Also, the third outer flap 131 extends from the ninth edge L9 of the third surface 13 and is bent at a right angle, and the fourth outer flap 132 extends from the tenth edge L10 of the third surface 13 and is bent at a right angle to face the third outer flap 131.

[0026] In this embodiment, a lid portion 16 is provided on the top portion 11 by providing a dashed line D1 on the top portion 11. As shown in Figures 1 and 2, the dashed line D1 is formed to extend mainly in the substantially longitudinal direction of the storage box 10. When the user breaks the dashed line D1 formed on the top portion 11 and removes the lid portion 16, an opening 16o is formed on the top portion 11. A film with a slit formed therein is attached to the inside of the storage box at the opening 16o. The user will take out tissue paper P from the slit in the opening 16o.

[0027] In this embodiment, the dashed line portion D1 is formed only on the top surface portion 11, but it is not limited to this. For example, in order to form a tongue (lift-up function portion) on the bottom surface portion 13 for the purpose of lifting the tissue paper P stored in the storage box 10 from the bottom, the dashed line D1 may be provided on a part of the bottom surface portion 13.

[0028] <Fiber orientation that makes up the base paper of the storage box> Fiber orientation refers to the tendency of pulp fibers to align in the longitudinal direction as they flow onto the wires of a paper machine, undergo dewatering, and form the paper layer. In other words, during papermaking, the pulp flows onto high-speed wires and is dewatered, resulting in a higher proportion of fibers oriented in the longitudinal direction (the direction of raw material flow on the paper machine). Consequently, the tensile strength and stiffness in the longitudinal direction are considerably stronger or higher than those in the transverse direction (width direction).

[0029] Generally, methods for measuring the fiber orientation of paper and the like include ultrasonic methods, thermal expansion methods, mechanical fracture strength methods, X-ray diffraction methods, microwave methods, NMR methods, polarized fluorescence methods, and dielectric measurements. In this invention, the ultrasonic method is employed, and for example, the ultrasonic propagation velocity measuring device "SONIC SHEET TESTER (device model name SST)" manufactured by Nomura Shoji Co., Ltd. is used to measure the ultrasonic propagation velocity in the longitudinal direction (Vmd) and the ultrasonic propagation velocity in the transverse direction (Vcd), and the ratio of these two (Vmd / Vcd) (hereinafter also referred to as (H / W) or (S / L)) is used as an index to evaluate the randomness of the fiber orientation as the fiber orientation ratio. When this fiber orientation ratio is 1.0, the fibers are completely randomly oriented.

[0030] In this invention, for example, when measuring the fiber orientation ratio (H / W) of the first to fourth outer flaps 111, 112, 131, and 132 of the storage box 10, the height direction (H) of the storage box 10 in the first to fourth outer flaps 111, 112, 131, and 132 is defined as the vertical direction, and the width direction (W) of the storage box 10 in the first to fourth outer flaps 111, 112, 131, and 132 is defined as the horizontal direction, and measurements are taken accordingly. Similarly, when measuring the fiber orientation ratio (H / W) of the first and second long side portions 12 and 14 of the storage box 10, the height direction (H) of the storage box 10 in the first and second long side portions 12 and 14 is defined as the vertical direction, and measurements are taken accordingly. Furthermore, when measuring the fiber orientation ratio (S / L) of the top surface 11 and / or bottom surface 13 of the storage box 10, the shorter direction (S) of the top surface 11 and / or bottom surface 13 is defined as the vertical direction, and the longer direction (L) of the top surface 11 and / or bottom surface 13 is defined as the horizontal direction, and measurements are taken accordingly.

[0031] On the other hand, since the fiber orientation ratio is determined by the papermaking conditions on the machine, it is necessary to optimize the operation on the machine. Possible means include optimizing the machine speed, the ratio of the fiber suspension jet inflow rate to the wire speed (J / W ratio), the wire shake, the arrangement of the homing board and weir, and the dandy roll. Furthermore, in the operation of a paper machine, the speed of the later parts is generally faster, and the paper is made while pulling the paper towards the reel. Increasing this speed difference can orient the pulp fibers in the direction of flow. The fiber orientation ratio can be adjusted by combining one or more of these means. It is preferable to harmonize it with other properties such as the paper's form.

[0032] In the present invention, as described above, on one surface of the storage box 10, the average orientation of the fibers constituting the base paper of the storage box 10 is aligned in a predetermined direction with respect to the height direction of the storage box 10. Specifically, the fiber orientation ratio (H / W) of the first to fourth outer flaps 111, 112, 131, 132 of the storage box 10 in the direction perpendicular to the height direction (W) with respect to the height direction (H) is greater than 1.00 and less than 3.00.

[0033] This configuration increases the rigidity in the height direction of the first to fourth outer flaps 111, 112, 131, 132 or the first and second long side portions 12, 14 of the storage box 10. As a result, the storage box 10 can withstand forces acting from the height direction on the first to fourth outer flaps 111, 112, 131, 132 or the first and second long side portions 12, 14, thereby suppressing deformation of the storage box 10 in the height direction.

[0034] The inventors discovered that when the fiber orientation ratio (H / W) is 3.00 or higher, the strength of the storage box 10 in the height direction improves, but when printing on the surface of the storage box 10, the ink tends to bleed in the direction of the orientation of the fibers constituting the base paper of the storage box 10. Therefore, they found that in order to improve the strength of the storage box 10 in the height direction and maintain printability by preventing ink from bleeding when printing on the surface of the storage box 10, it is preferable that the fiber orientation ratio (H / W) is greater than 1.00 and less than 3.00.

[0035] In this embodiment, the storage box 10 has a fiber orientation ratio (H / W) of the first and second long side portions 12 and 14 of the storage box 10 in the direction perpendicular to the height direction (W) with respect to the height direction (H), which is greater than 1.00 and less than 3.00.

[0036] The inventors have discovered that, with respect to the long side portions 12 and 14 of the storage box 10, if the length in the longitudinal direction (i.e., the length of the 1st edge L1, 2nd edge L2, 3rd edge L3, or 4th edge L4) is 0.15 or more and 0.50 or less, it has the effect of further suppressing deformation of the storage box 10.

[0037] Furthermore, if the sanitary paper according to the present invention is moisturizing tissue paper coated with a humectant, it is conceivable that the humectant applied to the moisturizing tissue paper may migrate to the side surface of the storage box 10. However, the side surface of the storage box 10 containing the migrated humectant will become damp, which may reduce its strength. In this embodiment, the rigidity in the height direction of the first and second long side surfaces 12 and 14 of the storage box 10 is increased, so the aforementioned reduction in strength is less likely to occur. As a result, it is possible to maintain the strength of the storage box 10 and suppress deformation of the storage box 10.

[0038] Furthermore, in this embodiment, in the pair of short side portions 21 and 22, the fiber orientation of the base paper of the storage box 10 in the two pairs of inner flaps 121, 122, 141, and 142 intersects with the fiber orientation of the base paper of the storage box 10 in the first pair of outer flaps 111, 112 and the second pair of outer flaps 131, 132.

[0039] Furthermore, dashed lines D1 are provided on the top surface 11 and / or bottom surface 13 of the storage box 10, extending substantially in the longitudinal direction of the storage box 10, and the fiber orientation ratio (S / L) of the top surface 11 and / or bottom surface 13 in the longitudinal direction (L) to the short direction (S) is greater than 1.00. In Figures 1 and 2, the dashed lines D1 for forming the lid 16 mainly extend in the longitudinal direction of the storage box 10. In the present invention, the fiber orientation ratio (S / L) may also be a numerical range greater than 1.00 and less than 3.00, similar to the fiber orientation ratio (H / W) described above.

[0040] Normally, the parts forming the dashed lines are structurally weak. However, with this configuration, when breaking the unbroken parts of the dashed lines, which alternate between broken and unbroken sections, the fibers must be cut across the fiber orientation. This allows for increased strength in the unbroken parts of the dashed lines, thereby suppressing the reduction in strength of the storage box 10 due to the presence of the dashed lines.

[0041] As described above, the fiber orientation ratio (S / L) of the top surface 11 and / or bottom surface 13 in the longitudinal direction (L) to the short direction (S) is greater than 1.00.

[0042] This configuration allows for reliable cutting along the perforations, making it possible to cleanly remove the lid portion of the top surface 11 of the storage box 10 when forming the opening 16o.

[0043] <Blank sheet for storage box and printed area thereon> Moving to Figure 2, in the blank sheet (also simply called a blank) 10B of the storage box 10 in this embodiment, the second surface 12 is connected to the first surface 11 via the first edge (first fold line) L1, the third surface 13 is connected to the second surface 12 via the third edge (third fold line) L3, and the fourth surface 14 is connected to the first surface 11 via the second edge (second fold line) L2.

[0044] The first inner flap 121 is connected to the second surface 12 via the seventh edge (seventh fold line) L7, and the second inner flap 122 is connected to the second surface 12 via the eighth edge (eighth fold line) L8. The third inner flap 141 is connected to the fourth surface 14 via the eleventh edge (eleventh fold line) L11, and the fourth inner flap 142 is connected to the fourth surface 14 via the twelfth edge (twelfth fold line) L12.

[0045] The first outer flap 111 is connected to the first surface 11 via the fifth edge (fifth fold line) L5, and the second outer flap 112 is connected to the first surface 11 via the sixth edge (sixth fold line) L6. Furthermore, the third outer flap 131 is connected to the third surface 13 via the ninth edge (ninth fold line) L9, and the fourth outer flap 132 is connected to the third surface 13 via the tenth edge (tenth fold line) L10.

[0046] The blank sheet 10B according to this embodiment includes a splice 15 for connecting the third surface 13 and the fourth surface 14. The splice 15 is connected to the third surface 13 via the fourth edge (fourth fold line) L4. In this invention, the splice 15 may be connected from the fourth surface 14 instead of the third surface 13.

[0047] In the blank sheet 10B according to this embodiment, the fiber orientation ratio (H / W) in the direction perpendicular to the height direction (W) (the longitudinal direction (L) of the top surface 11 and / or bottom surface 13) (i.e., the left-right direction) of the first and second long side surfaces 12 and 14 of the storage box 10, which is the height direction (H) (or the short side direction (S) of the top surface 11 and / or bottom surface 13), i.e., the up-down direction in Figure 2, is greater than 1.00 and less than 3.00.

[0048] In this embodiment, as described above, the entire outer surface of the storage box 10 is provided with printed areas (coated areas) G formed by printing (coating) ink to provide decoration or identification. The printed areas G include letters, figures, patterns, designs, or combinations thereof. The printed areas G are provided over the entire surface that becomes the outer surface when the blank sheet 10B (i.e., the first to fourth surfaces 11 to 14, the first inner flaps 121 to 4th inner flaps 142, and the first outer flaps 111 to 4th outer flaps 132) is assembled as the storage box 10.

[0049] In this invention, various inks can be used for printing. The ink components mainly consist of resin components, solvents, colorants, and auxiliary agents. Resin components include nitrose-based resins, polyamide-based resins, polyurethane-based resins, acrylic-based resins, polylactic acid-based resins, rosin-based resins, and polyester-based resins. Solvents include toluene, xylene, ethyl acetate, butyl acetate, IPA, butanol, MEK, and MIBK.

[0050] In this invention, the ink used for printing is preferably biomass ink. Biomass ink is an ink that uses biomass-derived components as part of its raw materials, and is manufactured by extracting components from biological resources (biomass) such as cotton, pulp, rice bran, vegetable oil, and angiosperm seeds. Biomass includes renewable, biologically derived organic resources, excluding fossil resources.

[0051] In this embodiment, a portion of the raw materials for the resin component in the ink component is derived from biomass, and the resin component using biomass-derived materials is contained in the ink component at a concentration of 10% by mass (dry weight ratio) or more. That is, in this embodiment, the biomass ink used in the printing section G contains 10% by mass or more of the solid content of components using plant-derived raw materials.

[0052] In the present invention, the printing method for the printing section G may be a known printing method such as gravure printing using a gravure roll, flexographic printing, or offset printing, and is preferably gravure printing. In this embodiment, the printing method for the printing section G is gravure printing.

[0053] For the outer surface of the storage box 10 provided with the printed section G according to this embodiment, it is useful to set the smoothness, measured by the method specified in JAPAN TAPPI Paper Pulp Test Method No. 5-1, to 30.0 kPa or less. If the smoothness exceeds 30.0 kPa, the smoothness of the outer surface of the storage box 10 becomes rough. Preferably, the range of smoothness is 25.0 kPa or less as the upper limit and 1.0 kPa or more as the lower limit. More preferably, the lower limit is 5.0 kPa or more.

[0054] Figure 3 is a schematic side view of an example of a carton supply device used in the assembly process of the storage box 10 according to this embodiment. It is used to take out cartons 202 one by one from a bundle of cartons 202 (made by connecting the third side 13 and the fourth side 14 of the storage box 10 via a splice 15 to form a sleeve, and then folding them into a sheet) and place them on the conveyor belt of the first carton conveyor unit 231, which transports them to a subsequent process (the filling process described later).

[0055] The carton supply device shown in Figure 3 comprises a carton storage section 221 that stores folded cartons 202 for storing tissue paper, a carton supply section 211 that dispenses and supplies cartons 202 one by one from the carton storage section 221 by suction using a suction cup 212, and a first carton transport section 231 that transports the cartons 202 supplied from the carton supply section 211 to a subsequent process. Details of the configuration of the carton supply device will be described later.

[0056] In the carton supply device, when removing cartons 202 one by one from the carton storage section 221, the cartons 202 are sucked into the suction cup 212 of the carton supply section 211 and removed one by one from the removal section 225. It is understood that the smoothness of the surface of the carton 202, that is, the outer surface of the storage box 10, is related to the setting of the suction force. In other words, if the outer surface of the storage box 10 is rough, the carton 202 will fall out when sucked up by the suction cup 212, so the suction force must be set strongly, resulting in a lot of energy being spent on suction. To solve this problem, the inventors have discovered that by setting the smoothness of the outer surface of the storage box 10 on which the printed section G is provided according to this embodiment to 30.0 kPa or less, the cartons 202 can be stably sucked up and removed by the suction cup 212.

[0057] Furthermore, the smoothness of the smoother material can be measured by the following method in accordance with JAPAN TAPPI Paper Pulp Test Method No. 5-1. (1) Prepare a test piece by forming a 60mm square from the base paper of the storage box 10, and place it on the smoothness measurement stand with the outer surface facing upwards. (2) Place the smoothness measuring head on the test piece and press down on the side hole (air inlet) of the smoothness measuring head. (3) After approximately 5 seconds, open the side hole and measure the mercury column in the measuring tube.

[0058] In the storage box 10 according to this embodiment, the printed area G is provided on the outer surface. However, in the present invention, in addition to the printed area G, a coating layer may be provided by applying a coating agent to the printed area G for purposes such as protecting the printed area G.

[0059] The raw materials for the coating agent preferably include a thermosetting resin or an acrylic resin. For example, acrylic resins include acrylic acid and methacrylic acid resin. The coating layer can be formed by press coating. Press coating is performed by applying a coating agent such as an acrylic resin to the surface to be coated, heat-pressing it onto a metal plate or roller with a mirror-like gloss finish, cooling it, and then peeling it off. Since the processed surface is smooth, a high gloss can be obtained, which greatly improves the appearance. In the present invention, the smoothness of the outer surface of the storage box 10 on which the coating layer is provided may also be set to 30.0 kPa or less, as measured by the method specified in JAPAN TAPPI Paper Pulp Test Method No. 5-1.

[0060] With this configuration, as described above, in the carton supply device shown in Figure 3, when the cartons 202 are sucked up from the bundle of cartons 202 by the suction cup 212 of the carton supply unit 211, it becomes possible to stably suck up and supply the cartons 202.

[0061] In this invention, the printed portion G may be arranged in a stripe pattern on the outer surface of the storage box 10, and may be formed in a manner that enhances the design. Furthermore, in this invention, the coating layer does not necessarily have to be formed on the printed portion G. In addition, in this specification and the claims, the printed portion G, the coating layer, or either one thereof shall be referred to as the coated portion, and the coating agent, ink, or other paint applied to form the coated portion shall be referred to as the coating material.

[0062] <Manufacturing process for packaging> Figure 4 is an overall perspective view of a modified example of this embodiment, in which five storage units 10P are packaged to create a package 50S, and 12 sets of package 50S are packaged together to create a package 100P. The process for manufacturing the package 100P will now be described. The storage box 10 of the storage unit 10P shown in Figure 4 has the same configuration as the storage box 10 shown in Figure 1, except that it is lower than the height of the storage box 10, and has the same effects as the embodiment.

[0063] (1) Paper making process The base paper for the storage box 10 is manufactured from papermaking raw materials such as recycled paper pulp. During this papermaking process, the fiber orientation of the base paper for the storage box 10 is determined by the direction of transport (flow direction) of the base paper.

[0064] (2) Printing process (or coating process) Printing (application of a coating agent) is performed on the base paper of the storage box 10 produced in the papermaking process (1) described above, and a printed area G is formed on the surface of the base paper that corresponds to the outer surface of the storage box 10.

[0065] (3) Cutting out process In the printing process (2) described above, the base paper for the storage box 10 is die-cut to create a blank sheet 10B for the storage box 10. In this invention, by setting the direction of die-cutting during the die-cutting process, it is possible to determine the fiber orientation of the surface of the storage box 10.

[0066] (4) Assembly process In the die-cutting process (3) described above, the blank sheet 10B of the storage box 10 is connected to the third side 13 and the fourth side 14 via the joint 15 to manufacture a sleeve. The sleeves are then folded and bundled together (bundles of cartons 202), and each one is taken out by the carton supply device shown in Figure 3 and transported to the subsequent filling process.

[0067] (5) Filling process The bundle of tissue paper P is filled into the sleeve-shaped storage box 10 (carton 202) assembled in the above assembly process (4).

[0068] (6) Packaging process In this packaging process, multiple storage boxes 10, i.e., storage units 10P, which are filled with bundles of tissue paper P in the filling process (5) described above, are packaged. Specifically, five storage units 10P are stacked in the height direction of the storage box 10 and wrapped with resin film to produce a packaged body 50S.

[0069] (7) Packaging process In this packaging process, multiple packages 50S, which were packaged in the above packaging process (6), are packaged together. Specifically, 12 sets of packages 50S are placed in a cardboard box to complete a package 100P.

[0070] As shown in Figure 4, five stacked storage boxes 10 are arranged with one short side facing the bottom and the other short side facing the top. By arranging them in two rows at the back, three rows at the front, and two rows vertically, a total of 12 sets of packaging bodies 50S are packed into one packaging body 100P. In other words, the storage boxes 10 are packed so that the longitudinal direction of the long sides 12 and 14 of the storage boxes 10 is in the same direction as the height of the packaging body 100P. In Figure 4, the thick line drawn in the center of the top surface of the corrugated cardboard box indicates that the free edges of the pair of outer flaps on the top side of the corrugated cardboard box of the packaging body 100P are butted together.

[0071] As described above, in the storage box 10 according to this embodiment, the fiber orientation ratio (H / W) of the long side portions 12 and 14 of the storage box 10 in the direction perpendicular to the height direction (W) with respect to the height direction (H) is greater than 1.00 and less than 3.00.

[0072] Generally, a 100P corrugated cardboard box is strong against pressure in the vertical direction of the 100P, but weaker in the horizontal direction (length direction) compared to the vertical direction. Therefore, there is a risk that the storage boxes inside may be crushed when force is applied from the side to the 100P.

[0073] According to a modified version of this embodiment, the rigidity of the long side portions 12 and 14 of the storage box 10 in the height direction of the storage box 10 is increased, making it possible to make the storage box 10 inside the packaging body 100P, as shown in Figure 4, less likely to deform (be crushed) even when force is applied from the side to the packaging body 100P during transport. In addition, since the packaged body 50S is less likely to deform, it becomes easier to remove the packaged body 50S from the cardboard packaging body 100P.

[0074] <Preferred numerical ranges for parameters relating to the storage box according to the present invention> In the present invention, as described above, the lower limit of the fiber orientation ratio (H / W) of the first to fourth outer flaps 111, 112, 131, 132 or the first and second long side portions 12, 14 of the storage box 10, measured by a predetermined ultrasonic propagation velocity measuring device (device model name SST: sonic sheet tester), is preferably greater than 1.00, more preferably greater than 1.05, even more preferably greater than 1.10, and even more preferably greater than 1.30. On the other hand, the upper limit of the fiber orientation ratio (H / W) is preferably less than 3.00, more preferably less than 2.50, even more preferably less than 2.00, even more preferably less than 1.80, and even more preferably less than 1.60.

[0075] In the present invention, the stiffness of the fibers constituting the base paper of the storage box 10 is preferably 10.0 mN·m to 30.0 mN·m in the height direction and 5.0 mN·m to 15.0 mN·m in the width direction, when measured in accordance with JIS P8125.

[0076] The base paper used as the material for the storage box 10 of the present invention can be, for example, known paper materials made from various types of pulp such as recycled paper pulp. In this invention, the basis weight of the base paper for the storage box 10 is 300 g / m². 2 ~420g / m 2It is preferable that the paper is of a certain thickness, preferably 300 μm to 600 μm. If the thickness of the base paper is less than 300 μm, the durability will decrease and it will be more prone to being crushed when assembled into the storage box 10. If the thickness of the base paper exceeds 600 μm, the durability of the storage box 10 will be excellent, but the increased thickness may make it difficult to fold when forming the storage box 10.

[0077] Conventionally, storage boxes for sanitary paper such as tissue paper are required to have a certain degree of rigidity in order to withstand the forces they are subjected to during transportation and display when distributed as a product, as well as the forces applied to the storage box when the sanitary paper stored inside is used. For example, Patent Document 1 discloses a storage box in which the rigidity of the storage box is increased by providing multiple scribed lines on the surface of the storage box.

[0078] However, the storage box described in Patent Document 1 requires a separate device to form the creasing lines on the surface during the manufacturing process, which may incur additional costs and effort. Furthermore, since multiple creasing lines are formed on the surface of the storage box, this may limit the design freedom of the storage box.

[0079] Furthermore, while the exterior of storage boxes is generally printed to add decoration or identification, depending on the fiber orientation of the paper used to make up the storage box, there is a possibility that the ink applied to the exterior may bleed.

[0080] According to this embodiment, when manufacturing the base paper for the storage box, by setting the fiber orientation of the base paper, it is possible to increase the rigidity (or strength) of a desired part of the surface of the storage box at low cost, without incurring the cost and effort of separately preparing a device for increasing rigidity.

[0081] Furthermore, since no special processing is required to increase the rigidity of the storage box, it is possible to maintain a high degree of design freedom for the storage box.

[0082] Furthermore, by specifying the fiber orientation ratio of the base paper to satisfy the predetermined conditions described above, it is possible to suppress ink bleeding when printing on the outer surface of the storage box, improve ink adhesion to the outer surface of the storage box, and make the printed surface clearer. One of the factors that contributes to this effect is that the printing direction, that is, the rotation direction of the gravure roll, the transport direction of the material to be printed (the base paper of the storage box), and the direction perpendicular to the fiber orientation of the base paper of the storage box are all oriented in similar directions.

[0083] <Carton supply device> The carton supply device described above will now be explained in detail. As described above, the carton supply device of this embodiment includes, as shown in Figure 3, a carton storage section 221 that stores cartons 202 for storing tissue paper in a folded state, a carton supply section 211 that takes out and supplies cartons 202 one by one from the carton storage section 221, and a first carton transport section 231 that transports the cartons 202 supplied from the carton supply section 211 to a subsequent process.

[0084] The carton storage section 221 includes a removal section 225, a measuring sensor 227, and a separation section 228. The removal section 225 is composed of two parallel guides, an upper carton guide 225a and a lower carton guide 225b. The removal section 225 has an opening 225t opposite the carton supply section 211. The opening 225t has a fastener 226 to lock the carton 202 in place, so that the carton 202 is stored in the opening 225t without falling out. When stored in the removal section 225, one side of the carton is positioned opposite the suction cup 212. That is, the carton 202 positioned at the front of the opening 225t of the removal section 225 is sucked into the suction cup 212 of the carton supply section 211 (described later), and is removed one by one from the removal section 225. The separation section 228 consists of an upper loading stopper 223a, a lower loading stopper 223b, and a lower carton guide extension 228a connected to the lower carton guide 225b. The cartons 202 transported from the second carton transport section 222 are temporarily loaded and stored by the lower carton guide extension 228a. This reduces the load on the cartons 202 inside the retrieval section 225. In this embodiment, loading stoppers are provided, but the system is not limited to this, and any configuration that prevents the cartons 202 from falling out of the retrieval section 225 is acceptable.

[0085] The second carton transport unit 222 also includes a transport belt 222a, a transport motor 222b, and a carton detection sensor 224. The second carton transport unit transports the carton in a folded state to the carton storage unit 221. That is, the second carton transport unit 222 supplies the carton 202 in a folded state to the separation section 228 of the carton storage unit 221. The transport belt 222a is an endless belt and is positioned between the transport motor 222b and a pulley (not shown). The carton detection sensor 224 detects the height of the carton 202 on the transport belt 222a. That is, the carton detection sensor 224 detects whether or not the upper end of the carton 202 is near the carton detection sensor 224. In other words, when the carton detection sensor 224 detects that the top edge of the carton 202 is near the carton detection sensor 224, it maintains that state. On the other hand, if the top edge of the carton 202 is not near the carton detection sensor and is not detected, the transport motor 222b is driven and the carton 202 is transported to the separation section 228.

[0086] Figure 5 is a schematic diagram showing the carton transport section of the carton storage section of a carton supply device relating to the assembly process of a storage box according to the first embodiment of the present invention. When cartons 202 in the carton storage section 221 are supplied to the second carton transport section 222 by the carton supply section 211, the number of cartons 202 in the carton storage section 221 decreases, as shown in Figure 5(a). When the number of cartons 202 in the carton storage section 221 decreases, as shown in Figure 5(b), the lower stopper 223b for inputting into the separation section 228 is released, and the cartons 202 stored in the separation section 228 are stored in the carton storage section 221. In the carton storage section 221, a predetermined number of cartons 202 are bundled together and moved to a position adjacent to the carton supply section 211 and the first carton transport section 231, facing the carton supply section 211. In other words, the measuring sensor 227 in the carton storage section 221 measures the amount of cartons 202 moving from the separation section 228, and when a predetermined number is reached, the lower input stopper 223b is activated to hold the cartons 202 in the separation section 228. One bundle of cartons 202 and the other bundle of cartons 202 are separated, that is, the bundle of cartons 202 in the carton storage section 221 and the bundle of cartons in the separation section 228 are separated. As a result, no load is placed on the bundle of cartons 202 in the carton storage section 221. In addition, the measuring sensor 227 measures the amount of cartons 202 and supplies them from the separation section 228 to the carton storage section 221, but it is not limited to this, and the number of cartons removed by the carton supply section 211 from the removal opening 225t of the carton storage section 221 may be measured, and the cartons supplied from the separation section 228 to the carton storage section 221 according to that number.

[0087] Then, the transport motor 222b is driven, and the cartons 202 are supplied to the separation section 228. As shown in Figure 4, when the cartons 202 are stored in the carton storage section 221 and the cartons 202 are detected by the carton detection sensor 224, the transport motor 222b of the second carton transport section 222 stops. In this way, when the amount of cartons 202 in the carton storage section 221 decreases, it is possible to supply cartons 202 to the second carton transport section 222, the separation section 228, and the carton storage section 221.

[0088] In Figure 5, a separation section is provided in the carton storage section, but a configuration without a separation section in the carton storage section is also possible, and as a modified example, a configuration without a separation section in the carton storage section will be described. Figures 6 and 7 are schematic diagrams showing modified carton storage sections of a carton supply device relating to the assembly process of a storage box according to the first embodiment of the present invention. When cartons are supplied into the carton storage section 221 from the second carton transport section 222, cartons are loaded into the carton storage section 221 and the second carton transport section 222, as shown in Figure 6. When the cartons 202 in the carton storage section 221 are supplied to the first carton transport section 231 by the carton supply section 211, the number of cartons 202 in the carton storage section 221 decreases, as shown in Figure 7. When the number of cartons 202 in the carton storage section 221 decreases, the upper end of the cartons 202 loaded on the second carton transport section 222 is no longer detected by the carton detection sensor 224, so the transport motor 222b is driven and the cartons 202 are transported to the carton storage section 221.

[0089] Then, as shown in Figure 6, cartons 202 are placed in the carton storage section 221, and the amount of cartons 202 is measured by the measuring sensor 227 in the carton storage section 221. When a predetermined amount is reached and detected by the carton detection sensor 224, the transport motor 222b of the second carton transport section 222 stops. In this way, when the amount of cartons 202 in the carton storage section 221 decreases, it is possible to supply cartons 202 from the second carton transport section 222 to the carton storage section 221.

[0090] The process of the carton supply unit 211 taking a carton 202 from the carton storage unit 221 and supplying it to the first carton transport unit 231 will now be described. Figure 8 is a schematic cross-sectional view showing the supply of cartons from the carton storage unit to the transport unit of a carton supply device relating to the assembly process of a storage box according to the first embodiment of the present invention. The carton supply unit 211 comprises a plurality of suction cups 212 for sucking up the carton 202, a plurality of support units 213 for supporting the suction cups 212, and a carton supply unit body 214 that rotatably supports the support units 213. The carton supply unit body 214 is connected and fixed to a shaft 215, and when the shaft 215 rotates, the carton supply unit body 214 rotates at the same time. The shaft 215 is connected to a drive source at one end of the shaft 215. As a result, the carton supply unit body 214 can rotate via the shaft 215. Furthermore, in this embodiment, two suction cups 212 and two support parts 213 that support the two suction cups 212 are connected to one axis 215. This allows the carton 202 to be stably removed and held when it is taken out. The carton 202 is then sucked out from the carton storage section 221 by the rotatable carton supply section body 214 of the carton supply section 211 and the suction cups 212 of the rotatable support parts 213 of the carton supply section body 214 (carton sucking process). The carton supply section body 214 is rotatable around the axis 215 in the direction of arrow A, i.e., clockwise. The suction cups 212 are supported by the support parts 213 and rotate together with the carton supply section body 214. Then, when the suction cup 212 reaches a position opposite the opening 225t of the carton storage section 221, the suction cup 212 sucks up the carton 202 stored in the carton storage section 221 and removes it. The support section 213 rotates in the opposite direction to the carton supply section body 214, and the carton supply section body 214 rotates while holding the carton 202 with the suction cup 212 (rotational movement process). In other words, once the carton 202 is removed, the support section 213 rotates around the axis 213a in the opposite direction to arrow A, that is, counterclockwise, and rotates while holding the carton 202 with the suction cup 212.Then, the carton supply unit 211 supplies the cartons 202 one by one to the first carton transport unit 231 (the process of supplying to the first carton transport unit). That is, when the suction cup 212 holds the carton 202 and reaches a position facing the first carton transport unit 231, the carton 202 is supplied to the first carton transport unit 231. The rotation of the carton supply unit body 214, the rotation of the support unit 213, and the rotation of the transport motor 233 of the first carton transport unit are synchronized so that the cartons 202 can be placed on the transport belt 222a, and can be placed at a predetermined position on the transport belt 222a.

[0091] The first carton conveying unit 231 comprises an endless conveying belt 232, a conveying motor 233, and conveying protrusions 234. The conveying belt 232 conveys the conveying protrusions 234, which form a receiving body for the cartons 202 supplied from the carton supplying unit 211, and the cartons 202 supplied from the carton supplying unit 211 are supplied to this receiving body. The cartons 202 are supplied one at a time between the conveying protrusions 234 of the first carton conveying unit 231 at predetermined positions. At this time, the carton supplying unit 211 takes out 100 to 600 cartons 202 per minute from the carton storage unit 221 and supplies them to the first carton conveying unit. In other words, the carton supplying unit 211 can change the number of cartons supplied by changing the rotation speed of the support unit 213 along with the rotation speed of the carton supplying unit body 214. Furthermore, although the cross-sectional shape of the transport projection 234 in this embodiment is trapezoidal, it is not limited to this, and as shown in Figure 8, the shape of the left side of the transport projection 234 is such that it can receive the carton. For example, a fan shape is acceptable. The cross-sectional shape of the right side of the transport projection 234 is such that the carton 202 does not come into contact with it when it is placed on top, or if it does come into contact with it, it should be such that it slides. For example, a rounded shape is acceptable. This makes it easier to place the carton 202, which is being sucked into the suction cup 212, into a predetermined position.

[0092] Figure 9 is a cross-sectional view taken along line IX-IX in Figure 4 of the carton storage section in this embodiment. It shows the position where the suction cup 212 is pressed against the carton, viewed from the opposite direction of the carton supply section 211, at the dispensing opening 225t of the dispensing section 225. The carton 202 is a sheet-like structure consisting of a top surface and side with a dispensing opening on one side, and a bottom surface and side on the other. That is, the carton 202 is arranged in the order of a second long side portion 14, a top surface portion 11, a first long side portion 12, and a bottom surface portion 13, and a joint portion 15 provided on the side of the bottom surface portion 13 opposite to the second long side portion 14 is joined to the first long side portion 12, forming a folded sheet-like structure before it is formed into a storage box capable of storing tissue paper. The carton 202 has a lid portion 16 that extends in the longitudinal direction near the center of the top surface portion 11 of the carton 202. As described above, a plastic film is attached to the inside of the top surface 11 of the carton 202, and the film seals off the area to prevent dust and other debris from entering. The suction cup 212 sucks at the suction position 212a of the top surface 11, including the lid 16. That is, even though the dashed line D1 is formed to surround the lid 16, the suction cup 212 sucks at the suction position 212a of the top surface 11, including the lid 16, because there is a film inside the carton 202, and removes the carton 202 from the carton storage section 221. In this embodiment, the top surface 11 of the carton 202 is sucked by the suction cup 212, but it is not limited to this, and the first long side surface 12, which is one side, may also be sucked by the suction cup.

[0093] Thus, conventional methods required precisely matching the conveying cycle of the conveyor belt with the rotation of the frame. Even a slight difference in cycle would cause the carton to hit a protrusion on the conveyor belt, preventing it from being placed in the designated position. However, with the configuration of the carton supply device described above, the carton supply unit can efficiently place the carton in the designated position by rotating it in the reverse direction from the carton storage unit onto the conveyor belt while holding it with a suction cup.

[0094] Furthermore, the carton supply device is not limited to the above-described form and can be modified, altered, or substituted as appropriate. For example, although the transport section has one transport projection, two transport projections may be provided to receive the cartons more accurately.

[0095] <Second Embodiment> In the second embodiment of the present invention, unlike the first embodiment, a graphic pattern is provided on the long side of the storage box 10 by cutout processing. Components having the same function as in the first embodiment are denoted by the same reference numerals and their descriptions are omitted.

[0096] Figure 10 is a diagram showing an example of a combination of shapes cut out from the long side of the storage box according to this embodiment.

[0097] In this embodiment, letters, figures, patterns, designs, or combinations thereof are provided on the sides of the storage box 10 by cutting out parts of the side portions 12, 14, 21, and 22 of the storage box 10. Similar to the first embodiment, the fiber orientation ratio (H / W) of the pair of first and second long side portions 12 and 14 in the direction perpendicular to the height direction (W) with respect to the height direction (H) is greater than 1.00 and less than 3.00. Furthermore, a dashed line D1 is provided on the top portion 11 and / or bottom portion 13 so as to extend substantially along the longitudinal direction of the storage box 10, and the fiber orientation ratio (S / L) of the top portion 11 and / or bottom portion 13 in the longitudinal direction (L) with respect to the short direction (S) is greater than 1.00.

[0098] The forming region 20 on which the characters, figures, patterns, designs, or combinations thereof are provided is set to have an opening formed by punching out a cut-out opening 30 on the inside, ensuring a frame width F of 5 mm or more (preferably 10 mm or more) from the edges L1, L3, L7, L8, which are the corner edges of the storage box 10. The space between the forming region 20 and the corner edges L1, L3, L7, L8 functions as an unopened width, a frame 10f that ensures the strength necessary for the storage box 10 to maintain its rectangular parallelepiped shape as a storage box.

[0099] According to this embodiment, in addition to the effects obtained in the first embodiment, by increasing the rigidity of the sides of the storage box 10 in the height direction, it is possible to ensure the overall strength of the storage box 10 by compensating for the reduced strength of the sides of the storage box 10 that would result from cutting out parts of the side portions 12, 14, 21, and 22 of the storage box 10 with the increased rigidity of the side frame 10f.

[0100] In this embodiment, when a cutout opening 30 is formed in the first long side portion 12 (or second long side portion 14) of the storage box 10, a plastic film is attached to the inside of the first long side portion 12 (or second long side portion 14), similar to the dispensing opening 16o of the top portion 11, and the film seals off the area to prevent dust and other debris from entering. Therefore, the first long side portion 12 (or second long side portion 14), including the cutout opening 30, can be sucked by the suction cup 212. Thus, even a carton of the storage box 10 having a cutout opening 30 as in this embodiment can be supplied from the carton storage section to the first carton transport section by the carton supply method described above.

[0101] The present invention is not limited to the embodiments described above or the modifications mentioned in various places, and can be modified or altered as appropriate without departing from the technical spirit of the present invention.

[0102] For example, in each of the embodiments and their modifications described above, the fiber orientation ratio (H / W) of the outer flaps 111, 131, 112, 132, or the long side portions 12, 14 in the direction perpendicular to the height direction (W) with respect to the height direction (H) is greater than 1.00 and less than 3.00, and the top portion 11 and / or bottom portion 13 are provided with dashed lines extending substantially along the longitudinal direction of the storage box 10, and the fiber orientation ratio (S / L) of the top portion 11 and / or bottom portion 13 in the longitudinal direction (L) with respect to the short direction (S) is greater than 1.00, but the present invention is not limited thereto. In this invention, a configuration is also permitted in which the fiber orientation ratio (S / L) of the bottom portion 13 in the longitudinal direction (L) to the short direction (S) is greater than 0.33 (1 / 3 rounded to two decimal places) and less than 1.00, and / or the fiber orientation ratio (H / W) of the long side portions 12 and 14 in the direction perpendicular to the height direction (W) to the height direction (H) is greater than 0.33 (1 / 3 rounded to two decimal places) and less than 1.00. In addition to this configuration, the above-mentioned printed portion G and coating layer may be provided, and the smoothness of the outer surface of the storage box on which the printed portion G and coating layer are formed may be 30.0 kPa or less. As described above, the configuration in which the smoothness of the outer surface of the storage box is 30.0 kPa or less makes it possible to stably suck up and supply the cartons 202 when the suction cup 212 of the carton supply unit 211 sucks up the cartons 202 from the bundle of cartons 202 in the carton supply device shown in Figure 3.

[0103] In the process of filling storage boxes with sanitary paper, if the sanitary paper is not smoothly inserted into the storage box, the sanitary paper may rub against the inner wall of the storage box, potentially causing twisting and paper dust to be generated. As in the above configuration, if the fiber orientation ratio (S / L) of the bottom portion 13 in the longitudinal direction (L) to the short direction (S) is less than 1.00, and / or the fiber orientation ratio (H / W) of the long side portions 12 and 14 in the direction perpendicular to the height direction (W) to the height direction (H) is less than 1.00, then by setting the fiber orientation of the base paper when manufacturing the base paper for the storage box, it becomes possible to suppress twisting and paper dust of the sanitary paper generated when filling storage boxes with sanitary paper.

[0104] Furthermore, the inventors have discovered that by setting a lower limit for the fiber orientation ratio (S / L) and / or the fiber orientation ratio (H / W), such that the fiber orientation ratio (S / L) of the bottom surface 13 in the longitudinal direction (L) relative to the short direction (S) is greater than 0.33 (1 / 3 rounded to two decimal places) and less than 1.00, and / or the fiber orientation ratio (H / W) of the long side surfaces 12 and 14 in the direction perpendicular to the height direction (W) relative to the height direction (H) is greater than 0.33 (1 / 3 rounded to two decimal places) and less than 1.00, in addition to the aforementioned effect of suppressing twisting and paper dust of the sanitary paper, it is possible to suppress ink bleeding when printing on the outer surface of the storage box, improve ink adhesion to the outer surface of the storage box, and make the printed material on the outer surface clearer. In order to achieve the said effect, in the present invention, the lower limit of the fiber orientation ratio (S / L) and / or the lower limit of the fiber orientation ratio (H / W) is preferably greater than 0.33 (1 / 3 rounded to two decimal places), more preferably greater than 0.40, and even more preferably greater than 0.50, while the upper limit of the fiber orientation ratio (S / L) and / or the upper limit of the fiber orientation ratio (H / W) is preferably less than 1.00, more preferably less than 0.95, and even more preferably less than 0.90. [Explanation of symbols]

[0105] 10 Storage Boxes 10B Storage Box Blank Sheet 10P storage unit 11 First side 12 Second surface section 13 Third side 14 Fourth side 15. Succession 16 Lid 50S packaging 100P Packaging 121 First internal flap 122 Second internal flap 141 Third internal flap 142. Fourth internal flap 111 First outer flap 112 Second outer flap 131 Third outer flap 132. Fourth outer flap G Printing Department L1 First edge (first fold line) L2 Second edge (second fold line) L3 Third edge (third fold line) L4 Fourth edge (fourth fold line) L5 Fifth edge (fifth fold line) L6 6th edge (6th fold line) L7 7th edge (7th fold line) L8 Eighth edge (eighth fold line) L9 Ninth edge (ninth fold line) L10 10th edge (10th fold line) L11 Eleventh edge (eleventh fold line) L12 12th edge (12th fold line)

Claims

1. A storage box capable of storing sanitary paper, The aforementioned storage box has a roughly rectangular parallelepiped shape with six surfaces: a top surface, a bottom surface, a pair of short sides, and a pair of long sides. The pair of short side portions are composed of an inner flap and an outer flap. The fiber orientation ratio (H / W) of the long side portion in the direction perpendicular to the height direction (W) with respect to the height direction (H) is greater than 1.00 and less than 3.

00. The top and / or bottom surfaces are provided with dashed lines extending substantially along the longitudinal direction of the storage box, and the fiber orientation ratio (S / L) of the top and / or bottom surfaces in the longitudinal direction (L) to the short direction (S) is greater than 1.

00. The basis weight of the base paper for the aforementioned storage box is 300 g / m². 2 ~420g / m 2 A storage box characterized by the following:

2. The storage box according to claim 1, characterized in that the storage box has a printed section made of biomass ink.

3. The storage box according to claim 2, characterized in that the biomass ink contains 10% by mass or more of a component made from plant-derived raw materials in its solid content.

4. The storage box according to claim 2 or 3, characterized in that the printed section is provided by printing with a gravure roll.

5. The storage box according to any one of claims 2 to 4, characterized in that the printed portion is provided on the entire outer surface of the storage box.

6. The storage box according to any one of claims 2 to 5, characterized in that it has a coating layer by applying a coating agent to the printed portion.

7. The storage box according to claim 6, characterized in that the raw materials of the coating agent include a thermosetting resin or an acrylic resin.

8. The storage box according to claim 6 or 7, characterized in that the coating layer is formed by press coating.

9. A storage box characterized in that the smoothness of the printed portion described in any one of claims 2 to 5, or the smoothness of the coating layer described in any one of claims 6 to 8, provided on the outer surface of the storage box, is 30.0 kPa or less.

10. Two pairs of inner flaps extending from each of the two pairs of edges of the pair of long side portions, A first pair of outer flaps extending from each of the pair of edges of the top surface, The device further comprises a second pair of outer flaps extending from each of the pair of edges of the bottom surface, The pair of short side portions are composed of the two pairs of inner flaps, the first pair of outer flaps, and the second pair of outer flaps. The storage box according to any one of claims 1 to 9, characterized in that, in the pair of short side portions, the fiber orientation of the base paper of the storage box in the two pairs of inner flaps and the fiber orientation of the base paper of the storage box in the first pair of outer flaps and the second pair of outer flaps intersect.

Images