Wound body storage box

Abstract

To provide a wound body storage box for restricting a movement of a wound body in the wound body storage box.SOLUTION: A width direction DW is a direction from a front plate 21 to a back plate 22, a height direction DH is a direction from an opening to a bottom plate 25, a length direction DL is a direction from one side plate to the other side plate, a right reference position 23B is a center of the width direction DW and the height direction DH at a right side plate 23, a back portion 20B is at the back plate 22 side of the width direction DW than the right reference position 23B at a wound body storage box, a minimum value of an inner dimension LA of the length direction DL between the side plates at a portion at the bottom plate 25 side than the right reference position 23B is smaller than the inner dimension LA of the length direction DL between the side plates at a portion at the opening side than the right reference position 23B in the height direction DH of the back portion 20B.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a wound body storage box for storing wound bodies. [Background technology]

[0002] An example of a roll storage box is a rectangular parallelepiped carton for storing wrap film. The wrap film is wound around a cylindrical core and stored in the roll storage box with a gap between the inner surface of the roll storage box and the roll.

[0003] Due to the gap between the roll storage box and the roll, when the wrap film is pulled out, the roll moves back and forth within the roll storage box, or the axis of the core moves so that it is oblique to the axial direction. Unstable pulling due to this movement of the roll makes it difficult to cut the wrap film or induces the wrap film to be cut in a direction oblique to the direction in which it should be cut. Furthermore, when the roll storage box containing the roll is transported, the gap causes the roll to move within the storage box. The movement of the roll during transportation can scratch the edge of the wrap film or cause tears to occur from the scratches when the wrap film is pulled out.

[0004] An example of a wound body storage box that suppresses the movement of the wound body described above is a box that includes a pair of first side panels and a pair of second side panels. The second side panels are bent from the rear panel. The first side panels are bent from the front panel and are positioned closer to the wound body than the second side panels. When the direction from the front panel to the rear panel is defined as the width direction, the distance between the pair of first side panels on the rear panel side in the width direction is configured to be shorter than the distance on the front panel side. The rear panel side of the wound body in the width direction comes into contact with the side panels, thereby suppressing movement of the wound body toward the rear panel side (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2019-043605 Summary of the Invention [Problem to be solved by the invention]

[0006] On the other hand, the roll storage box that suppresses the movement of the roll described above uses a pair of first side panels bent from the front panel to determine the spacing between the pair of side panels. Therefore, when the direction from the bottom panel toward the opening is defined as the height direction, the spacing between the pair of side panels on the rear panel side in the width direction is shorter than the spacing between the front panel side across almost the entire height direction. That is, even near the opening of the roll storage box, the spacing between the pair of side panels on the rear panel side in the width direction is shorter than the spacing on the front panel side. As a result, when inserting or removing a roll through the opening of the roll storage box, such as when the leading end of the wrap film is wound back inside the roll storage box, it is difficult to insert fingers or other objects into the gap between the roll and the side panels, making it difficult to insert or remove the roll. [Means for solving the problem]

[0007] A wound body storage box for solving the above problem includes a bottom plate, a front plate, a rear plate, and a pair of left and right side plates, wherein the upper edge of the front plate, the upper edge of the rear plate, and the upper edges of the side plates define an opening for putting in and taking out the wound body. The direction from the front plate toward the rear plate is the width direction, the direction from the opening toward the bottom plate is the height direction, and the direction from one side plate toward the other side plate is the length direction. The center of the side plates in the width direction and the height direction is a reference position, the side of the wound body storage box closer to the rear plate than the reference position in the width direction is a rear part, and in the height direction of the rear part, the minimum value of the internal dimension in the length direction between the side plates in a portion closer to the bottom plate than the reference position is smaller than the internal dimension in the length direction between the side plates in a portion closer to the opening than the reference position.

[0008] According to the above configuration, the longitudinal inner dimension of the rear portion of the wound body storage box has a minimum value at the portion closest to the bottom plate. The portion of the rear portion where the longitudinal inner dimension has a minimum value is likely to come into contact with the wound body. Therefore, the wound body storage box is configured so that the inner dimension on the opening side is larger than the inner dimension on the bottom plate side while preventing the wound body from moving toward the rear plate, making it easy to insert and remove the wound body.

[0009] In the above-mentioned wound body storage box, the front plate side of the wound body storage box in the width direction relative to the reference position may be the front part, and the minimum value may be smaller than the inner dimension in the length direction between the side plates at the front part.

[0010] According to the above configuration, the minimum value of the inner lengthwise dimension at the rear of the wound body storage box is smaller than the inner lengthwise dimension between the side panels at the front of the wound body storage box, which makes it easier to take the wound body in and out while preventing the wound body from moving toward the rear panel.

[0011] In the above-described wound body storage box, the side panels may include a first side panel folded from the rear panel and positioned on the innermost side of the wound body storage box, a second side panel folded from the front panel, and a third side panel folded from the bottom panel and positioned on the outermost side of the wound body storage box. The first side panel may include a bottom portion that constitutes the rear portion and is closer to the bottom panel than the reference position, and an opening portion that constitutes the rear portion and is closer to the opening than the reference position, the bottom portion being spaced from the third side panel toward the inside of the wound body storage box, and the opening portion being joined to the third side panel.

[0012] According to the above configuration, the bottom portion of the first side panel is spaced from the third side panel toward the inside of the wound body storage box, and the opening portion is joined to the third side panel, so that the difference in the relative positions of the first and third side panels in the longitudinal direction allows the portion with the smallest inner dimension in the longitudinal direction to be located closer to the bottom panel than the reference position in the rear part.

[0013] In the above-mentioned rolled body storage box, the rear plate further has a lower edge of the rear plate that contacts the bottom plate, the first side plate contacts the rear plate via a first score line, and the first score line may be bent at the boundary between a first score line portion that extends from an end of the lower edge of the rear plate toward the upper edge of the rear plate and a second score line portion that extends from the end of the upper edge of the rear plate toward the lower edge of the rear plate.

[0014] With this configuration, the first crease, which is the boundary between the back panel and the first side panel, bends at the boundary between the first crease on the bottom panel side and the second crease on the opening side, making it easy to achieve a complex structure in which the bottom side is separated from the third side panel and the opening side is joined to the third side panel.

[0015] In the above-mentioned wound-body storage box, the first score line may be a cut line on the outer surface of the wound-body storage box. With this configuration, the first side panel is bent from the back panel along the first score line, which makes it easy to separate the bottom portion from the third side panel and join the opening portion to the third side panel.

[0016] In the above-mentioned wound body storage box, the side panel may be bent so that the inner dimension in the length direction at the rear portion gradually increases from the widthwise end and the heightwise end of the inner surface of the side panel toward the reference position, and so that the inner dimension in the length direction at the rear portion remains constant from the reference position toward the opening.

[0017] According to the above configuration, the inner length of the rear portion is minimized at the bottom plate side by bending the side panels. The inner length of the rear portion gradually increases from the width and height of the inner surface of the side panels toward the reference position, achieving the above-mentioned effect even when the diameter of the wound object decreases. It also makes it easier to remove the wound object toward the opening. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a perspective view of a roll-containing box before it is opened, seen from above on the front right side. [Figure 2] FIG. 2 is a perspective view of the wound body storage box after opening, seen from above on the front left side. [Figure 3] FIG. 3 is a top view of the box body for explaining the inner dimensions of the wound body storage box. [Figure 4] FIG. 4 is a perspective view showing the internal structure of the wound body storage box. [Figure 5] FIG. 5 is a rear view of the rear surface of the wound body storage box as seen from behind. [Figure 6] FIG. 6 is a side view of the inner surface of the wound body storage box as seen from the inside, and is a side view for explaining changes in the inner dimensions. [Figure 7] FIG. 7 is a top view for explaining the change in the inner dimensions of the wound body storage box. [Figure 8] FIG. 8 is a plan view showing an intermediate body for manufacturing a wound body storage box. DETAILED DESCRIPTION OF THE INVENTION

[0019] One embodiment of a wound body storage box will be described with reference to Figures 1 to 8. First, the overall configuration of the wound body storage box will be described with reference to Figures 1 and 2. Next, the internal dimensions of the wound body storage box will be described with reference to Figure 3. Then, the structure that determines the internal dimensions of the wound body storage box will be described with reference to Figures 4 to 7. Note that to assist in the description of each configuration of the wound body storage box, intermediate products for manufacturing the wound body storage box will be referred to as appropriate with reference to Figure 8.

[0020] [Storage box containing rolled body] As shown in FIG. 1, the storage box containing the roll comprises a roll storage box 10 and a wrap film roll (hereinafter simply referred to as roll 50R). The roll storage box 10 has a rectangular parallelepiped shape extending in one direction. The roll storage box 10 is manufactured by folding and adhering an intermediate body (see FIG. 8) made of a single sheet of cardboard such as coated cardboard. The roll 50R comprises a paper cylinder 50C that serves as a core material, and wrap film 50, which is an example of a long object. The wrap film 50 is wrapped around the cylinder 50C. The length of the cylinder 50C in the axial direction A is longer than the length of the wrap film 50 in the left-right direction. Both ends of the cylinder 50C in the axial direction A protrude beyond the film ends of the wrapped wrap film 50.

[0021] [Wound body storage box 10] The wound body storage box 10 comprises a box body 20 and a lid body 30. The box body 20 has a rectangular parallelepiped shape with an open top. The box body 20 comprises a front panel 21, a rear panel 22, a right side panel 23, a left side panel 24, and a bottom panel 25. The right side panel 23 and the left side panel 24 form a pair of side panels on the left and right. The front panel 21, the rear panel 22, the right side panel 23, and the left side panel 24 stand upright from the bottom panel 25 and form a single peripheral wall.

[0022] The material constituting the box body 20 and the lid body 30 is not particularly limited, and may be, for example, plastic, metal, cardboard, a laminated plate made of multiple layers of cardboard, or a single sheet of cardboard. From the viewpoint of ease of handling during the manufacture of the roll storage box 10, the material constituting the box body 20 and the lid body 30 is preferably paperboard such as coated cardboard.

[0023] As shown in FIG. 2, the opening 20T of the box body 20 is defined by the upper edge of the peripheral wall. The roll 50R is inserted and removed through the opening 20T. The axial direction A of the roll 50R is approximately parallel to the extension direction of the roll storage box 10. The wrap film 50 is, for example, a film made from one material selected from the group consisting of polyvinylidene chloride, polyvinyl chloride, polyethylene, and polymethylpentene, or a multilayer film made from a combination of these materials, but is not limited to this. In order to prevent damage to the film located on the outermost layer of the wrap film 50, it is preferable that the wrap film 50 be mainly composed of a vinylidene chloride resin. The vinylidene chloride resin may be any resin as long as it contains vinylidene chloride units.

[0024] In the following description, the side of the opening 20T relative to the bottom plate 25 will be referred to as the upper side, and the side of the bottom plate 25 relative to the opening 20T will be referred to as the lower side. The side of the back plate 22 relative to the front plate 21 will be referred to as the rear side, and the side of the front plate 21 relative to the rear plate 22 will be referred to as the front side. The side of the left side plate 24 relative to the right side plate 23 will be referred to as the left side, and the side of the right side plate 23 relative to the left side plate 24 will be referred to as the right side. The direction from the front plate 21 toward the back plate 22 is the width direction DW. The direction from the opening 20T toward the bottom plate 25 is the height direction DH. The direction from the right side plate 23 toward the left side plate 24 and the direction from the left side plate 24 toward the right side plate 23 are the length direction DL.

[0025] [Box body 20] The front plate 21, the rear plate 22, and the bottom plate 25 each have a rectangular plate shape extending in the left-right direction. The front plate 21 and the rear plate 22 face each other in the front-rear direction. The front edge of the bottom plate 25 is the lower edge of the front plate 21, and the rear edge of the bottom plate 25 is the lower edge of the rear plate 22. Furthermore, the edge of the front plate 21 extending in the height direction DH is the front plate short side, and the edge of the rear plate 22 extending in the height direction DH is the rear plate short side.

[0026] The right and left side panels 23, 24 are rectangular and face each other in the left-right direction. The bottom edge of the right side panel 23 is connected to the bottom edge of the front panel 21, the bottom edge of the back panel 22, and the right edge of the bottom panel 25. The bottom edge of the left side panel 24 is also connected to the bottom edge of the front panel 21, the bottom edge of the back panel 22, and the left edge of the bottom panel 25.

[0027] The front plate 21 comprises a sub-front plate 21A (see Figure 8) and a main front plate 21B (see Figure 8). The sub-front plate 21A forms the inner surface of the box body 20. The main front plate 21B forms the outer surface of the front plate 21. The sub-front plate 21A is connected to the main front plate 21B at an upper edge 21T of the main front plate 21B. The sub-front plate 21A is folded toward the inside of the box body 20 at the upper edge 21T relative to the main front plate 21B. The outer surface of the main front plate 21B is provided with a temporary fastening portion 21S for temporarily fastening the wrap film 50.

[0028] The main front panel 21B includes a pair of front panel flaps 21F on the left and right. The front panel flaps 21F are positioned closer to the upper side 21T of the main front panel 21B than the center of the main front panel 21B in the height direction DH, and are positioned so as to sandwich the temporary fastening portion 21S in the left-right direction.

[0029] The front flap 21F is surrounded by a portion of the top edge 21T of the main front panel 21B and a curved cut line 21FC with both ends located on that portion. Both ends of the cut line 21FC may be located at positions away from the top edge 21T of the main front panel 21B. The cut line 21FC has an arc shape that convex downward from one end of the top edge 21T of the main front panel 21B to the other end. When the lid 30 is opened, the front flap 21F rotates toward the front of the box body 20 and rises up from the main front panel 21B. The front flap 21F that rises up from the main front panel 21B raises the cut end of the wrap film 50 that was pulled out of the opening 20T and cut off from the main front panel 21B.

[0030] The temporary fastening portion 21S includes a plurality of rectangular temporary fastening elements aligned in the left-right direction. The temporary fastening portion 21S is located on the outer surface of the main front panel 21B closer to the top edge 21T than the center in the height direction DH, and includes the center in the left-right direction. The temporary fastening portion 21S is preferably formed from UV varnish, but is not limited to this as long as it can temporarily fasten the wrap film 50. The temporary fastening portion 21S temporarily fastens the wrap film 50, which is pulled out from the opening 20T of the box body 20 and hangs down from the top edge 21T of the main front panel 21B, to the outer surface of the front panel 21.

[0031] The upper part of the secondary front panel 21A is provided with restricting pieces 3R, 4R extending in the front-to-rear direction. The restricting pieces 3R, 4R are located at both left and right ends of the upper edge of the secondary front panel 21A. The restricting pieces 3R, 4R are folded from the upper edge of the secondary front panel 21A along the crease LR (see Figure 8). When the wrap film 50 is pulled out of the box main body 20, the restricting pieces 3R, 4R come into contact with the tubular body 50C of the rolled body 50R from the upper front side. In this way, the restricting pieces 3R, 4R prevent the rolled body 50R from jumping out of the box main body 20.

[0032] The right side panel 23 includes a first right side panel 13F, a second right side panel 23F, and a third right side panel 53F (see FIG. 8). The left side panel 24 includes a first left side panel 14F, a second left side panel 24F, and a third left side panel 54F (see FIG. 8). The first right side panel 13F and the second right side panel 23F form the inner surface of the box body 20. The first left side panel 14F and the second left side panel 24F form the inner surface of the box body 20. The third right side panel 53F and the third left side panel 54F form the outer surface of the box body 20. The first right side panel 13F is located more inward of the box body 20 than the second right side panel 23F. The first left side panel 14F is located more inward of the box body 20 than the second left side panel 24F. The first right side panel 13F and the first left side panel 14F are each an example of a first side panel. The second right side panel 23F and the second left side panel 24F are each an example of a second side panel. The third right side panel 53F and the third left side panel 54F are each an example of a third side panel.

[0033] The right side panel 23 includes a lid locking piece 3T extending in the front-to-rear direction. The left side panel 24 includes a lid locking piece 4T extending in the front-to-rear direction. The lid locking piece 3T is connected to the upper edge 3E of the third right side panel 53F constituting the right side panel 23. The lid locking piece 3T is bent toward the outside (right side) of the box body 20 at the crease LT2 (see FIG. 8) which is the upper edge 3E of the third right side panel 53F, and protrudes to the right side of the box body 20. The lid locking piece 3T extends in the front-to-rear direction. The lid locking piece 4T is connected to the upper edge 4E of the third left side panel 54F constituting the left side panel 24. The lid locking piece 4T is bent toward the outside (left side) of the box body 20 at the crease LT2 (see FIG. 8) which is the upper edge 4E of the third left side panel 54F, and protrudes to the left side of the box body 20. The lid locking piece 4T extends in the front-to-rear direction.

[0034] [Cover 30] Returning to Figure 1, the lid 30 includes a top lid plate 31, a front lid plate 32, a lid right side plate 33, and a lid left side plate 34. The top lid plate 31 is rotatably connected to the top edge 22T of the rear plate 22. The top lid plate 31 rotates relative to the box body 20 around the top edge 22T of the rear plate 22 as an axis, thereby opening and closing the opening 20T of the box body 20.

[0035] The front cover plate 32 and the front plate 21 have substantially the same rectangular plate shape. The upper edge of the front cover plate 32 is the front edge of the upper cover plate 31. The front cover plate 32 covers the entire outer surface of the front plate 21 when the cover body 30 is closing the opening 20T. The front cover plate 32 has multiple semicircular cutouts 32C below the middle in the height direction DH. The inner surfaces of the cutouts 32C are bonded to the outer surface of the front plate 21. The front cover plate 32 has a perforation line 32M at approximately the center in the height direction DH, spanning the entire width in the left-right direction. The perforation line 32M has a downwardly convex shape. The right end of the perforation line 32M is an opening edge 32N for dividing the front cover plate 32 into upper and lower parts along the perforation line 32M.

[0036] When the opening end 32N is pulled forward, the front cover plate 32 is cut along the perforation line 32M. The adhesive between the front plate 21 and the front cover plate 32 is also peeled off at the notch 32C. As a result, the entire width of the front cover plate 32 in the left-right direction is divided into a lower side and an upper side along the perforation line 32M. The upper side of the front cover plate 32 defined by the perforation line 32M is the cover plate 32P. The lower side of the front cover plate 32 defined by the perforation line 32M is the tear-off piece 32K.

[0037] Returning to Figure 2, when the wrap film 50 begins to be used, the tear-off piece 32K is cut off from the box body 20. When the tear-off piece 32K is cut off from the lid body 30, the entire cutting edge of the cutting blade 35 is exposed from the lower end edge of the cover plate 32P. Then, the lid body 30 rotates on the upper edge 22T of the rear plate 22, thereby opening the opening 20T of the box body 20.

[0038] When the lid body 30 closes the opening 20T, the cover plate 32P has a plate shape that extends downward from the front edge of the upper cover plate 31 and covers the upper outer surface of the front plate 21. The width of the cover plate 32P in the height direction DH is greatest at the center in the left-right direction, excluding both left-right ends, and the width in the height direction DH decreases as one moves from the center in the left-right direction to each end.

[0039] A cutting blade 35 is bonded to the inner surface of the cover plate 32P. The cutting blade 35 has a saw-like shape with cutting edges aligned in the left-right direction. The cutting blade 35 is bonded to the cover plate 32P so that multiple cutting edges protrude downward from the cover plate 32P when the cover 30 is closing the opening 20T. The cutting blade 35 can be bonded to the cover plate 32P, for example, by ultrasonic bonding with a sealant or adhesive layer interposed between the cover plate 32P and the cutting blade 35. Alternatively, the cutting blade 35 can be bonded to the cover plate 32P by laminating a sealant layer on the resin layer of the blade material that constitutes the cutting blade 35.

[0040] The material constituting the cutting blade 35 is not particularly limited and may be, for example, resin or metal. The cutting blade 35 contains, for example, resin and an additive, and the rigidity of the cutting blade 35 and the adhesiveness of the cutting blade 35 to the cover plate 32P can be adjusted depending on the type and amount of the additive.

[0041] Examples of resins that make up the cutting blade 35 include polyester resins such as polylactic acid and polyethylene terephthalate, polyethylene, polypropylene, polystyrene, acetal resin, polyphenylene sulfide, PEEK (polyether ether ketone) resin, and PES (polyethersulfone) resin. Examples of additives that make up the cutting blade 35 include resins such as olefin-based resins, and inorganic materials such as barium sulfate, calcium carbonate, titanium oxide, silica, and talc. Examples of resins that make up the sealant layer include modified polyolefins that have been given adhesive properties by introducing functional groups into polyolefins.

[0042] The right lid side panel 33 includes a right lid side panel 33F and a joint piece 323. The left lid side panel 34 includes a left lid side panel 34F and a joint piece 324. The right lid side panel 33F is connected to the top lid panel 31 at a short side that is the intersection line between the top lid panel 31 and the right lid side panel 33F. The left lid side panel 34F is connected to the top lid panel 31 at a short side that is the intersection line between the top lid panel 31 and the left lid side panel 34F.

[0043] In the right lid side panel 33 and the left lid side panel 34, the lid side panels 33F, 34F form the outer surface of the lid 30. The joining pieces 323, 324 form the inner surface of the lid 30. The right lid side panel 33 and the left lid side panel 34 cover the upper part of the outer surface of the right side panel 23 and also cover the upper part of the outer surface of the left side panel 24 when the lid 30 closes the opening 20T.

[0044] The joining piece 323 is positioned with a gap between it and the short side of the top cover plate 31, which is the intersection line between the top cover plate 31 and the right cover side plate 33F. The joining piece 324 is also positioned with a gap between it and the short side of the top cover plate 31, which is the intersection line between the top cover plate 31 and the left cover side plate 34F. As a result, the joining pieces 323, 324 are positioned with a gap between them and the top cover plate 31, forming step portions 33S, 34S on the inner surfaces of the right cover side plate 33 and the left cover side plate 34. When the cover 30 closes the opening 20T, the above-mentioned cover locking pieces 3T, 4T fit into the step portions 33S, 34S, generating a clicking sound as they engage with the step portions 33S, 34S. By engaging with the step portions 33S, 34S, the cover locking pieces 3T, 4T prevent the top cover plate 31 from lifting up in the closed state.

[0045] [Assembly of the storage box containing the wound body] In assembling the storage box containing the wound body, first, the intermediate body of the wound body storage box 10 is formed by folding the sub-front plate 21A at the upper edge 21T relative to the main front plate 21B so that the sub-front plate 21A is positioned more inward in the box body 20 than the main front plate 21B. At the same time, the sub-front plate 21A is attached to the inside of the main front plate 21B. Next, the intermediate body of the wound body storage box 10 is formed by folding the bottom plate 25 relative to the rear plate 22 along the line L, and folding the front cover plate 32 relative to the top cover plate 31 along the line L. The front cover plate 32 is then placed on top of the main front plate 21B, and the cutout piece 32K is adhered to the lower part of the main front plate 21B so that it can be peeled off during use. As a result, the intermediate body of the wound body storage box 10 is formed into a flattened rectangular tube. Next, the intermediate body of the wound body storage box 10 is folded along the crease L so that the front main plate 21B and the rear plate 22 stand up relative to the bottom plate 25. As a result, the intermediate body of the wound body storage box 10 is formed into a rectangular tubular shape.

[0046] Next, the first right side panel 13F is folded relative to the back panel 22 along the crease LT, the second right side panel 23F is folded relative to the front main panel 21B along the crease LT, and the third right side panel 53F is folded relative to the bottom panel 25 along the crease LT. The second right side panel 23F is then folded onto the outside of the first right side panel 13F, and the third right side panel 53F is folded onto the outside of the second right side panel 23F and adhered. In this way, the right side panel 23 is formed.

[0047] Next, the lid locking piece 3T is folded outward from the box body 20 at the upper edge 3E of the third right side panel 53F. The restricting piece 3R is folded from the upper edge of the secondary front panel 21A along the crease LR. Furthermore, the lid right side panel 33F is folded relative to the top lid panel 31 along the crease LT, and the joining piece 323 is folded relative to the cover panel 32P along the crease LT. The lid right side panel 33F is then folded over and adhered to the outside of the joining piece 323, thereby forming the lid right side panel 33.

[0048] Next, the rolled body 50R is inserted into the rectangular tubular intermediate body. The first left side panel 14F is folded relative to the back panel 22 along the crease LT, the second left side panel 24F is folded relative to the front main panel 21B along the crease LT, and the third left side panel 54F is folded relative to the bottom panel 25 along the crease LT. The second left side panel 24F is then folded onto the outside of the first left side panel 14F, and the third left side panel 54F is folded onto the outside of the second left side panel 24F and adhered. This completes the formation of the left side panel 24.

[0049] Next, the lid locking piece 4T is folded outward from the box body 20 at the top edge 4E of the third left side panel 54F. The restricting piece 4R is folded from the top edge of the secondary front panel 21A along the crease LR. Furthermore, the lid left side panel 34F is folded relative to the top lid panel 31 along the crease LT, and the joining piece 324 is folded relative to the cover panel 32P along the crease LT. The lid left side panel 34F is then folded over and adhered to the outside of the joining piece 324, thereby forming the lid left side panel 34.

[0050] [Inner dimension LA of wound body storage box 10] Fig. 3 is a top view of the box body 20, showing the internal structure of the wound body storage box 10, omitting the illustration of the lid 30. In Fig. 3, for the convenience of explaining the inner dimension LA in the length direction DL between the right side panel 23 and the left side panel 24, the restricting pieces 3R, 4R are shown by dashed lines.

[0051] As shown in Figure 3, the right reference position 23B is the center in the width direction DW and also the center in the height direction DH (see Figure 4) of the right side panel 23. The left reference position 24B is the center in the width direction DW and also the center in the height direction DH of the left side panel 24. The reference line BL is a straight line that passes through the right reference position 23B and the left reference position 24B and extends along the length direction DL.

[0052] The rear portion 20B of the wound body storage box 10 constitutes the rear half of the wound body storage box 10. The rear portion 20B is located rearward in the width direction DW from the right reference position 23B and rearward in the width direction DW from the left reference position 24B within the wound body storage box 10. The rear portion 20B is located rearward in the width direction DW from the reference line BL within the wound body storage box 10.

[0053] The front portion 20F of the wound body storage box 10 constitutes the front half of the wound body storage box 10. The front portion 20F is located in front of the right reference position 23B in the width direction DW and in front of the left reference position 24B in the width direction DW in the wound body storage box 10. The front portion 20F is located in front of the reference line BL in the width direction DW in the wound body storage box 10.

[0054] The inner dimension LA of the rear portion 20B is the distance in the longitudinal direction DL between the right side panel 23 and the left side panel 24. In the rear portion 20B, the distance in the longitudinal direction DL between the right side panel 23 and the left side panel 24 is the distance in the longitudinal direction DL between the first right side panel 13F and the first left side panel 14F. The lower edge 13ET of the first right side panel 13F may be straight, as shown by the two-dot chain line in FIG. 3, or may be curved, as shown by the solid line in FIG. 3, so as to be convex outward in the longitudinal direction DL when pressed by the cylindrical body 50C of the wound body 50R. The lower edge 14ET of the first left side panel 14F may also be straight or curved. In either case, when viewed from a viewpoint facing the bottom plate 25, the inner dimension LA of the rear portion 20B gradually increases from the rear plate 22 toward the front plate 21 on the bottom plate 25 side from the reference position (the intersection of the reference line BL and the right side plate 23, and the intersection of the reference line BL and the left side plate 24).

[0055] The inner dimension LA in the front portion 20F is the distance in the longitudinal direction DL between the right side panel 23 and the left side panel 24. In the front portion 20F, the distance in the longitudinal direction DL between the right side panel 23 and the left side panel 24 is the distance in the longitudinal direction DL between the first right side panel 13F and the first left side panel 14F, or the distance in the longitudinal direction DL between the second right side panel 23F and the second left side panel 24F. In this embodiment, the front portion 20F has a restricting piece 3R and a restricting piece 4R, but these are not taken into consideration when determining the inner dimension LA. In both the front portion 20F and the rear portion 20B, the inner dimension LA is determined only by the components constituting the right side panel 23, the components constituting the left side panel 24, and the creases (13F, 23F, 53F, and crease LT in this embodiment). Furthermore, even if another structure that protrudes toward the inside of the wound body storage box 10 without contacting the outer peripheral surface of the cylindrical body 50C is provided on at least one of the right side panel 23 and the left side panel 24, such another structure is not taken into consideration when specifying the inner dimension LA. An example of the other structure mentioned above is a tongue-shaped locking piece that is inserted into the cylindrical body 50C.

[0056] In the roll storage box 10, the first right side panel 13F is connected to the rear panel 22 via a crease LT, which forms a right-side rear edge 23E. The first left side panel 14F is connected to the rear panel 22 via a crease LT, which forms a left-side rear edge 24E. The inner dimension LA between the right-side rear edge 23E and the left-side rear edge 24E is the smallest value of the inner dimension LA in the rear portion 20B when viewed from a perspective facing the bottom panel 25.

[0057] [Side panel structure] Fig. 4 is a perspective view of the right side panel 23 as seen from the upper left front side. In Fig. 4, for the sake of convenience in explaining the internal structure of the right side panel 23, a portion of the lid body 30 with the opening 20T open is not shown. The right side panel 23 and the left side panel 24 have a plane-symmetrical structure with a symmetrical plane at the center in the longitudinal direction DL of the wound-body storage box 10. Below, explanations of the structure of the left side panel 24 that overlap with the structure of the right side panel 23 will be omitted, and the structure of the right side panel 23 will be mainly explained.

[0058] As shown in FIG. 4, the first right side panel 13F extends from the end of the rear panel 22 toward the end of the front panel 21. The tip of the first right side panel 13F is located inside the second right side panel 23F (toward the rolled body 50R). The entire first right side panel 13F is located inside the third right side panel 53F. The second right side panel 23F extends from the end of the front panel 21 toward the end of the rear panel 22. The tip of the second right side panel 23F is located outside the first right side panel 13F. The entire second right side panel 23F is located inside the third right side panel 53F. The third right side panel 53F forms the outer surface of the box body 20. The third right side panel 53F is located approximately perpendicular to the front panel 21 and the bottom panel 25, and forms the right side panel 23.

[0059] The outer surface of the second right side panel 23F is bonded to the inner surface of the third right side panel 53F. A part of the second right side panel 23F forms the inner surface of the front part 20F of the roll-body storage box 10. The second right side panel 23F is located on a plane that is approximately perpendicular to the front panel 21 and the bottom panel 25.

[0060] The outer surface of the first right side panel 13F is bonded to the inner surface of the third right side panel 53F. A part of the first right side panel 13F forms the inner surface of the rear part 20B of the rolled body storage box 10. The other part of the first right side panel 13F forms the inner surface of the front part 20F of the rolled body storage box 10.

[0061] The bottom edge 13ET of the first right side panel 13F has a gentle curved shape that contacts the bottom panel 25, as shown by the solid line in FIG. 4, or a straight shape, as shown by the two-dot chain line in FIG. 4. The first right side panel 13F has a three-dimensional curved shape with its tip near the right reference position 23B and rises from the bottom panel 25. The first right side panel 13F has two slit lines, fold auxiliary lines FL1 and FL2, which extend along the bottom edge 13ET of the first right side panel 13F. The fold auxiliary lines FL1 and FL2 allow the first right side panel 13F to bend correctly and easily along the crease line LT (see FIG. 8).

[0062] In the height direction DH, the portion of the first right side panel 13F closer to the opening 20T than the right reference position 23B is the opening side portion 13FA. In the height direction DH, the portion of the first right side panel 13F closer to the bottom panel 25 than the right reference position 23B is the bottom side portion 13FB. In the width direction DW, the length of the opening side portion 13FA of the first right side panel 13F is shorter than the length of the bottom side portion 13FB. In the opening side portion 13FA of the first right side panel 13F, there is almost no overlap with the second right side panel 23F in the width direction DW. The tip of the bottom side portion 13FB of the first right side panel 13F forms the front portion 20F and overlaps with the second right side panel 23F in the width direction DW.

[0063] The opening-side portion 13FA of the first right side panel 13F is located on a plane that is approximately perpendicular to the front panel 21 and the bottom panel 25. The outer surface of the opening-side portion 13FA is bonded to the inner surface of the third right side panel 53F. The angle θa formed between the opening-side portion 13FA of the rear portion 20B and the rear panel 22 is 90° over almost the entire height direction DH.

[0064] The inner dimension LA of the opening side portion 13FA between the right side panel 23 and the left side panel 24 is substantially constant throughout the width direction DW and the height direction DH. The inner dimension LA of the opening side portion 13FA between the right side panel 23 and the left side panel 24 is substantially equal to the inner dimension LA between the right reference position 23B and the left reference position 24B. By making the inner dimension LA of the opening side portion 13FA between the right side panel 23 and the left side panel 24 substantially constant throughout the width direction DW and the height direction DH, the inner dimension LA on the opening 20T side can be sufficiently secured. This makes it easier to handle the wound body 50R when inserting or removing it from the box body 20.

[0065] The bottom portion 13FB of the first right side panel 13F is positioned so that its lower edge 13ET, which contacts the bottom panel 25, gradually approaches the inner surface of the third right side panel 53F from the back panel 22 to the front panel 21. The bottom portion 13FB of the first right side panel 13F, the third right side panel 53F, and the bottom panel 25 define a gap 23S within the right side panel 23. The gap 23S has a triangular pyramid shape with the bottom panel 25 as its base. The distance between the bottom portion 13FB and the third right side panel 53F gradually decreases from the back panel 22 toward the right reference position 23B, and also gradually decreases from the bottom panel 25 toward the right reference position 23B.

[0066] In this way, the first right side panel 13F is positioned so that the outer surface of the bottom portion 13FB in the rear portion 20B is spaced further inward from the third right side panel 53F than the third right side panel 53F, and the outer surface of the opening portion 13FA is bonded to the inner surface of the third right side panel 53F. This allows the area of ​​the rear portion 20B facing the bottom panel 25 to have the smallest inner dimension LA. With this configuration, even if the diameter of the rolled body 50R becomes smaller due to the use of the wrap film 50, the rear end surface of the cylindrical body 50C can be brought into contact with the inner surface of the box body 20, preventing the rolled body 50R from moving toward the rear panel 22. Furthermore, by preventing the rolled body 50R from moving, the axis of the cylindrical body 50C can be prevented from becoming oblique in the axial direction A. This makes it easier to cut the wrap film 50, preventing poor cutting, such as cutting the wrap film 50 at an angle. Furthermore, because the roll 50R is stabilized on the front panel 21 side, the cut end of the wrap film 50 is less likely to be pulled back into the box body 20 after cutting, thereby preventing the wrap film 50 from unwinding. The angle between the opening-side portion 13FA of the first right side panel 13F and the rear panel 22 on the opening 20T side, and the angle between the third right side panel 53F and the rear panel 22 on the opening 20T side, are approximately 90° from the rear portion 20B to the front portion 20F. Therefore, the outer surface of the opening-side portion 13FA of the first right side panel 13F and the inner surface of the opening 20T side of the third right side panel 53F can be bonded with sufficient strength without any gaps. Furthermore, because there are no gaps in the box body 20, the cleanliness of the box body 20 can be maintained more reliably.

[0067] The angle θb formed between the bottom portion 13FB and the rear plate 22 in the rear portion 20B gradually increases from the opening 20T side toward the bottom plate 25 side. On the bottom plate 25 in the rear portion 20B, the angle θb formed between the bottom portion 13FB and the rear plate 22 is greater than 90°, preferably 92° to 115°, and more preferably 93° to 110°. By making the angle θb greater than 90°, the first right side plate 13F becomes inclined, allowing the rear end surface of the cylindrical body 50C to effectively contact the first right side plate 13F and control the position of the cylindrical body 50C. By making the angle θb between 92° to 115°, the frictional resistance of the cylindrical body 50C can be kept within a practical range. By making the angle between 93° to 110°, the position of the cylindrical body 50C can be controlled while maintaining a good balance between the ease of pulling out and inserting / removing the wound body 50R, and the wound body storage box 10 can be made most user-friendly.

[0068] In the rear portion 20B of the wound body storage box 10, the inner dimension LA in a portion closer to the bottom plate 25 than the right reference position 23B in the height direction DH gradually increases from the rear end of the lower end side 13ET (the end on the rear plate lower side 22BL side) toward the right reference position 23B. In addition, in the rear portion 20B, the minimum value of the inner dimension LA in a portion closer to the bottom plate 25 than the right reference position 23B in the height direction DH is smaller than the inner dimension LA in a portion closer to the opening 20T than the right reference position 23B. The portion of the rear portion 20B where the inner dimension LA has the minimum value is a portion having both ends at the rear end of the lower end side 13ET.

[0069] [Arm and rear end structure] In the roll-body storage box 10, the first right side panel 13F is connected to the rear panel 22 via a right rear edge 23E. The right rear edge 23E has an opening edge E1, a boundary edge E2, and a bottom edge E3. In the height direction DH, the boundary edge E2 is located between the opening edge E1 and the bottom edge E3. The boundary edge E2 connects the opening edge E1 and the bottom edge E3.

[0070] The opening-side edge E1 is the portion where the first right side panel 13F connects to the back panel 22 and continues from the corner of the opening 20T formed by the back panel 22 and the first right side panel 13F toward the bottom panel 25. The opening-side edge E1 forms the angle θa described above. The inner surface of the first right side panel 13F, extending forward from the opening-side edge E1, is a plane substantially perpendicular to the longitudinal direction DL. The length of the opening-side edge E1 in the height direction DH is, for example, one-third of the length of the first right side panel 13F in the height direction DH at the rear portion 20B. The portion of the first right side panel 13F enclosed by the top edge, opening-side edge E1, and folding auxiliary line FL1 is located on a plane substantially perpendicular to the front panel 21 and the bottom panel 25 and is adhered to the inner surface of the third right side panel 53F.

[0071] The bottom edge E3 is the portion where the first right side panel 13F connects to the back panel 22 and continues from the corner formed by the bottom panel 25, the back panel 22, and the first right side panel 13F toward the opening 20T. The bottom edge E3 forms the angle θb described above. The inner surface of the first right side panel 13F, extending forward from the bottom edge E3, is slightly inclined with respect to the height direction DH and significantly inclined with respect to the length direction DL and the width direction DW. The length of the bottom edge E3 in the height direction DH is, for example, 1 / 3 of the length of the first right side panel 13F in the height direction DH at the rear portion 20B. The portion of the first right side panel 13F that is surrounded by the lower edge 13ET, bottom edge E3, and folding auxiliary line FL2 of the first right side panel 13F is an inclined portion that is greatly inclined with respect to the length direction DL and the width direction DW, and is spaced apart from the third right side panel 53F.

[0072] The boundary edge E2 is the portion where the first right side panel 13F connects to the rear panel 22 and continues from the upper end of the bottom edge E3 to the lower end of the opening edge E1. The boundary edge E2 forms the angle θb described above. The inner surface of the first right side panel 13F, extending forward from the boundary edge E2, is an inclined surface inclined with respect to the height direction DH, the length direction DL, and the width direction DW. The length of the boundary edge E2 in the direction in which it extends is, for example, one-third of the length of the first right side panel 13F in the height direction DH at the rear portion 20B. The portion of the first right side panel 13F enclosed by the two folding auxiliary lines FL1 and FL2 and the boundary edge E2 is an inclined portion inclined significantly with respect to the height direction DH, the length direction DL, and the width direction DW, and is spaced from the third right side panel 53F.

[0073] Fig. 5 is a perspective view of the rear right side edge 23E as seen from below and behind. For ease of explanation of the structure of the first right side panel 13F, Fig. 5 shows the opening side edge E1, boundary side edge E2, and bottom side edge E3 with dashed lines, and the outer surface of the first right side panel 13F with dots.

[0074] As shown in FIG. 5, the first right side panel 13F defines a gap 23S within the right side panel 23. The gap 23S is a space that tapers from the rear panel 22 toward the front panel 21 and from the bottom panel 25 toward the opening 20T. In the wound body storage box 10, the gap 23S tapers toward the front panel 21 and toward the opening 20T, thereby suppressing ventilation through the gap 23S and maintaining cleanliness within the box body 20. Furthermore, because the lower end edge 13ET of the first right side panel 13F is positioned in contact with the bottom panel 25 in the width direction DW, dust does not enter the box body 20 through the gap 23S. This enhances the maintenance of cleanliness within the box body 20.

[0075] The rear plate lower edge 22BL is the lower edge of the rear plate 22 and is the crease L (see FIG. 8) for connecting the rear plate 22 to the bottom plate 25. The length L1 (see FIG. 5) of the rear plate lower edge 22BL in the longitudinal direction DL is shorter than the length L2 of the other crease L, such as the crease L for connecting the front plate 21 to the bottom plate 25, by the length LN of the gap 23S in the longitudinal direction DL.

[0076] The first right side panel 13F is connected to the back panel 22 via a crease LT (see FIG. 8). The crease LT is an example of a first crease and has a curved line shape. The crease LT for connecting the back panel 22 to the first right side panel 13F includes a first crease portion, a second crease portion, and a boundary crease. The first crease may be linear and may not have a boundary crease, and the first crease portion and the second crease portion may be directly connected. The first crease portion, the second crease portion, and the boundary crease may each be linear, or any one of them may be curved.

[0077] The first scoring portion is a bottom-side scoring line E3L. The bottom-side scoring line E3L is a scoring line that forms the bottom-side edge E3 and extends from the end of the rear panel lower edge 22BL toward the end of the upper edge 22T of the rear panel 22. The second scoring portion is an opening-side scoring line E1L. The opening-side scoring line E1L is a scoring line that forms the opening-side edge E1 and extends from the end of the upper edge 22T of the rear panel 22 toward the end of the rear panel lower edge 22BL. The first scoring line also includes a boundary scoring line E2L. The boundary scoring line E2L is a scoring line that forms the boundary edge E2 and connects the first scoring portion and the second scoring portion at a predetermined angle. As a result, the first scoring portion and the second scoring portion bend at the boundary of the boundary scoring line E2L. The first scoring line also includes a slit that is cut from the outer surface of the roll storage box 10 toward the inside.

[0078] As described above, the first right side panel 13F has a three-dimensional curved surface with its tip near the right reference position 23B. The inner surface of the first right side panel 13F, extending forward from the opening-side edge E1, is a flat surface substantially perpendicular to the longitudinal direction DL. Meanwhile, the inner surface of the first right side panel 13F, extending forward from the bottom edge E3 and the inner surface of the first right side panel 13F, extending forward from the boundary edge E2, are inclined surfaces with different inclinations relative to the height direction DH, the longitudinal direction DL, and the width direction DW. Therefore, by providing slits extending from the outer surface of the roll-containing box 10 toward the inside of the bottom crease E3L and the boundary crease E2L, respectively, the first crease facilitates bending the first right side panel 13F along the crease LT relative to the rear panel 22. This improves the formability of the roll-containing box 10. The slits are preferably half-slits.

[0079] [Effect] As described above, the inner dimension LA of the rear portion 20B gradually increases from the rear panel 22 toward the front panel 21 due to the first side panels 13F and 14F on the bottom panel 25 side of the reference line BL, and gradually increases from the bottom panel 25 toward the opening 20T. The inner dimension LA of the rear portion 20B is substantially constant on the opening 20T side of the reference line BL. The leading edge of the inner surface of the side panel in the width direction DW (direction from the front panel 21 toward the rear panel 22) and the leading edge in the height direction DH (direction from the opening 20T toward the bottom panel 25) is the intersection 23Y where the rear panel lower edge 22BL and the right side rear edge 23E intersect. As indicated by the arrows in FIGS. 6 and 7 , the inner dimension LA of the rear portion 20B gradually increases from the intersection 23Y of the rear panel 22 toward the right reference position 23B. The inner dimension LA of the front portion 20F is substantially constant in the height direction DH and the width direction DW, including differences in the thickness of the second right side panel 23F and the second left side panel 24F.

[0080] The minimum value of the inner dimension LA on the bottom plate 25 side of the rear portion 20B is smaller than the inner dimension LA on the front portion 20F. Therefore, when the rolled body 50R moves toward the rear plate 22, the end faces of the tubular bodies 50C of the rolled body 50R come into contact with the first side panels 13F, 14F, thereby preventing the rolled body 50R from moving toward the rear plate 22. At this time, the inner dimension LA on the bottom plate 25 side of the rear portion 20B is configured so that the ends of the wrap film 50 in the length direction DL come into direct contact with the first side panels 13F, 14F and are not damaged.

[0081] The inner dimension LA on the opening 20T side of the front portion 20F is larger than the inner dimension LA on the bottom plate 25 side of the rear portion 20B, and is approximately the same as the inner dimension LA on the opening 20T side of the rear portion 20B. As a result, when the rolled body 50R is put in or taken out of the opening 20T of the rolled body storage box 10, such as when the leading end of the wrap film 50 is wound back inside the rolled body storage box 10, the inner dimension LA on the opening 20T side of the rear portion 20B is configured to be larger than the inner dimension LA on the bottom plate 25 side, and the inner dimension LA on the opening 20T side of the front portion 20F is also configured to be larger than the inner dimension LA on the bottom plate 25 side of the rear 20B. Therefore, it is easy to insert fingers into the box body 20 when putting in or taking out the rolled body 50R, making it easy to handle.

[0082] According to the above embodiment, the following effects can be obtained. (1) The inner dimension LA of the rear portion 20B of the rolled body storage box 10 has its smallest value at the portion closest to the bottom plate 25. The portion of the rear portion 20B where the inner dimension LA is smallest is likely to come into contact with the end face of the cylindrical body 50C of the rolled body 50R. Therefore, the rolled body storage box 10 prevents the rolled body 50R from moving toward the rear plate 22 and prevents the axial direction A of the cylindrical body 50C from becoming oblique. As a result, the wrap film 50 can be cut stably, preventing poor cutting, such as cutting the wrap film 50 at an angle. Furthermore, because the rolled body 50R is stabilized on the front plate 21 side, the cut end of the wrap film 50 is less likely to be pulled back into the box body 20 after cutting, preventing the wrap film 50 from unwinding. Furthermore, the inner dimension LA on the opening 20T side of the rear portion 20B is configured to be larger than the inner dimension LA on the bottom plate 25 side, making it easier to insert and remove the rolled body 50R.

[0083] (2) The minimum value of the inner dimension LA at the rear portion 20B of the wound body storage box 10 is smaller than the inner dimension LA at the front portion 20F between the right side panel 23 and the left side panel 24. Therefore, the wound body storage box 10 prevents the wound body 50R from moving toward the rear panel 22, suppressing cutting defects while making it easier to put in and take out the wound body 50R.

[0084] (3) The bottom portion 13FB of the first right side panel 13F is spaced inward from the third right side panel 53F, and the opening portion 13FA of the first right side panel 13F is joined to the third right side panel 53F. This results in a difference in the relative positions of the first right side panel 13F and the third right side panel 53F in the length direction DL, and the area where the inner dimension LA is smallest can be located in the part of the rear portion 20B on the bottom panel 25 side.

[0085] (4) The back panel 22 and the first right side panel 13F are in contact with each other via the crease LT, and the bottom crease E3L and the opening crease E1L are bent at the boundary crease E2L. This allows for a complex structure to be easily realized, such as separating the bottom portion 13FB from the third right side panel 53F and joining the opening portion 13FA to the third right side panel 53F.

[0086] (5) Since the bottom line E3L and the boundary line E2L include cut lines, it is easy to fold the first right side panel 13F from the back panel 22, thereby separating the bottom portion 13FB from the third right side panel 53F and joining the opening side portion 13FA to the third right side panel 53F.

[0087] (6) The inner dimension LA of the rear portion 20B is minimized at the portion on the bottom plate 25 side by folding the right side panel 23. The inner dimension LA gradually increases from the tip of the inner surface of the right side panel 23 in the width direction DW and height direction DH toward the right reference position 23B, so that the same effect as above can be obtained even if the diameter of the roll 50R is reduced by using the wrap film 50.

[0088] The above embodiment can be modified as follows. [First side panel] The inner dimension LA of the rear portion 20B may have a minimum value continuously from the bottom panel 25 toward the opening 20T. For example, instead of the bottom portion 13FB inclined with respect to the height direction DH, the first right side panel 13F may have a bottom portion 13FB that rises from the lower edge 13ET of the first right side panel 13F along the height direction DH. In this case, the first right side panel 13F may have a stepped shape with a surface extending forward from the bottom edge E3 approximately parallel to the third right side panel 53F, and a surface extending forward from the boundary edge E2 approximately parallel to the bottom panel 25. Even with this configuration, the inner dimension LA of the rear portion 20B has a minimum value near the bottom panel 25, and therefore the effects equivalent to those of (1) to (5) above can be obtained.

[0089] At least a portion of the boundary line E2L may be a half-slit line or a perforated line. At least a portion of the bottom line E3L may also be a half-slit line or a perforated line. Note that the boundary line E2L may be configured without a slit line, and the bottom line E3L may also be configured without a slit line. Even with such a configuration, the effects equivalent to those of (1) to (4) and (6) above can be obtained. 8, bottom crease E3L may extend from an end of boundary crease E2L on bottom crease E3L toward an end of crease LT connecting the third side panels 53F, 54F to the bottom panel 25 on the rear panel lower edge 22BL side. Bottom crease E3L may also extend from an end of boundary crease E2L on bottom crease E3L so that the length LN of gap 23S decreases the closer it is to the rear panel lower edge 22BL. With this configuration, the minimum value of the inner dimension LA in the portion of the rear portion 20B closer to the bottom panel 25 than the reference positions 23B, 24B is formed at the bent portion formed by the bent bottom crease E3L and boundary crease E2L in FIG. 5. That is, the portion having the minimum value of the inner dimension LA is located higher in the height direction DH than the portion having both ends at the rear end of the bottom edge 13ET (the end on the rear panel lower edge 22BL side). As a result, the cylindrical body 50C of the wound body 50R comes into contact with the first right side panel 13F at a higher position, so that the pull-out rotation of the wound body 50R is less likely to cause the wound body 50R to jump out of the box body 20. As a result, the jump-out of the wound body 50R can be suppressed.

[0090] The crease LT connecting the rear panel 22 to the first right side panel 13F may be straight or curved. Even if the crease LT connecting the rear panel 22 to the first right side panel 13F is a straight line that forms an obtuse angle with the rear panel lower edge 22BL, it is possible to configure the first right side panel 13F so that the inner dimension LA of the rear portion 20B has its smallest value at the portion closer to the bottom panel 25. Even with this configuration, the effects equivalent to those of (1) to (3) and (6) above can be obtained.

[0091] The lower edge 13ET of the first right side panel 13F may have a gentle curved shape that contacts the bottom panel 25, or may have a straight shape that contacts the bottom panel 25. The inner surface of the left side panel 24 may be flat and perpendicular to the longitudinal direction DL. Even in this configuration, the inner dimension LA of the rear portion 20B has its smallest value at the portion closest to the bottom panel 25, which is achieved by the first right side panel 13F.

[0092] [Inner dimensions] The entire inner dimension LA of the bottom portion 13FB between the right side panel 23 and the left side panel 24 may be equal to or smaller than the inner dimension LA of the opening portion 13FA between the right side panel 23 and the left side panel 24.

[0093] The maximum value of the inner dimension LA at the bottom portion 13FB between the right side panel 23 and the left side panel 24 may be equal to or less than the maximum value of the inner dimension LA at the opening side portion 13FA between the right side panel 23 and the left side panel 24.

[0094] The portion where the inner dimension LA between the right side panel 23 and the left side panel 24 is at its smallest value may be located at the rear end of the lower edge 13ET of the first right side panel 13F, or may be located midway in the direction in which the lower edge 13ET extends.

[0095] The portion of the wound body storage box 10 that exhibits the smallest value of the internal dimension LA may be located at the rear portion 20B of the wound body storage box 10, at the front portion 20F, or at both the rear portion 20B and the front portion 20F.

[0096] [Third side panel] In FIG. 8, the crease line LT connecting the third side panels 53F, 54F and the bottom panel 25 may be a diagonal, straight crease line extending from the end of the crease line L that forms the lower edge of the front panel 21 toward the end of the crease line L that forms the lower edge 22BL of the back panel (toward the bottom crease line E3L). This configuration shortens the length LN of the gap 23S, thereby reducing the gap 23S formed in the right side panel 23 or the left side panel 24. Reducing the gap 23S is preferable from the standpoints of appearance and preventing foreign matter from entering the gap 23S. As described above, if the crease line LT is formed diagonally, the length in the longitudinal direction DL of the lower edge 22BL of the back panel is shortened, and the bottom panel 25 may have a trapezoidal shape. Furthermore, the upper edges 3E, 4E of the third side panels 53F, 54F may be entirely or partially inclined downward from the back panel 22 toward the front panel 21.

[0097] Furthermore, crease LT connecting third side panels 53F, 54F and bottom panel 25 may extend from the end of crease L, which forms the lower edge of front panel 21, to the end of bottom crease E3L on the rear panel lower edge 22BL side. That is, the end of crease LT connecting third side panels 53F, 54F and bottom panel 25 may be formed so as to be in the same position as the end of bottom crease E3L on the rear panel lower edge 22BL side. This configuration is preferable from the viewpoint of preventing foreign matter from entering roll storage box 10 because gap 23S is closed.

[0098] Furthermore, the crease LT connecting the third side panels 53F, 54F and the bottom panel 25 may be formed in a gently curved shape that bulges toward the third side panels 53F, 54F instead of a straight line. As described above, when the gap 23S formed in the roll storage box 10 is reduced, the first side panels 13F, 14F have less room to bulge outward when they are pushed outward by the cylindrical body 50C of the roll 50R. This can increase the load required to pull out the wrap film 50. However, by forming the crease LT in a gently curved shape that bulges toward the third side panels 53F, 54F, the first side panels 13F, 14F have more room to bulge outward, allowing the wrap film 50 to be pulled out more smoothly. [Explanation of symbols]

[0099] DH: Height direction DL: Lengthwise direction DW: Width direction LA…Inner dimensions LR,LT...ruled lines 10...Wound body storage box 13F...1st right side panel 13FA…Opening side part 13FB...bottom part 14F...1st left side panel 20...Box body 20F...Front 20B…Rear 20T…Aperture 21...Front panel 21T, 3E, 4E...Top 22...Rear plate 22BL...Bottom edge of rear panel 23...Right sideboard 23B…Right reference position 23F...Second right side panel 23S...gap 24...Left sideboard 24B…Left reference position 24F…2nd left side board 25…Bottom plate 30...lid body 50...wrap film 50C...Cylinder 50R...wound body 53F…3rd right side panel 54F…3rd left side board

Claims

1. A wound body storage box comprising a bottom plate, a front plate, a rear plate, and a pair of left and right side plates, wherein an upper edge of the front plate, an upper edge of the rear plate, and an upper edge of the side plates define an opening for inserting and removing a wound body having a cylindrical body, At least one of the side panels is configured to contact the outer circumferential surface of the cylindrical body, The direction from the front plate to the rear plate is the width direction, a direction from the opening toward the bottom plate is a height direction; The direction from one side panel to the other side panel is the length direction, The center of the side board in the width direction and the height direction is a reference position, a rear portion of the wound body storage box is located closer to the rear plate in the width direction than the reference position; In the height direction of the rear portion, The minimum value of the inner dimension in the length direction between the side plates in the portion closer to the bottom plate than the reference position is The inner dimension in the longitudinal direction between the side panels at the portion closer to the opening than the reference position is smaller than the inner dimension in the longitudinal direction between the side panels at the portion closer to the opening than the reference position. Winding body storage box.

2. a front portion of the wound body storage box is located closer to the front plate in the width direction than the reference position; The minimum value is smaller than the inner dimension in the longitudinal direction between the side panels at the front portion. The wound body storage box according to claim 1 .

3. The side panel is a first side panel bent from the rear panel and positioned at the innermost side of the wound body storage box; a second side panel bent from the front panel; a third side plate bent from the bottom plate and positioned at the outermost side of the wound body storage box, The first side panel is a bottom portion that configures the rear portion and is closer to the bottom plate than the reference position; an opening-side portion that configures the rear portion and is located closer to the opening than the reference position, The bottom portion is spaced from the third side panel toward the inside of the wound body storage box, The opening side portion is joined to the third side panel. The wound body storage box according to claim 1 or 2.

4. The rear plate further has a rear plate lower edge that contacts the bottom plate, The first side panel is in contact with the rear panel via a first score line, The first crease is bent at a boundary between a first crease portion extending from an end of the lower side of the rear plate toward the upper side of the rear plate and a second crease portion extending from an end of the upper side of the rear plate toward the lower side of the rear plate. The wound body storage box according to claim 3.

5. The first score line has a cut line on the outer surface of the wound body storage box. The wound body storage box according to claim 4.

6. The inner dimension in the length direction of the rear portion gradually increases from a portion that is the leading end in the width direction and the leading end in the height direction of the inner surface of the side panel toward the reference position, and The side panels are bent from the reference position toward the opening so that the inner dimension in the length direction at the rear portion is constant. The wound body storage box according to claim 1 or 2.

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