JP2007001625A - Cylindrical roll storage box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylindrical roll storage box which makes the flap structure of both side plates, as a cylindrical roll support structure satisfy such performances as pushing in flaps by an easy operation, preventing the cylindrical roll from falling out of the box, and decreasing resistance when a sheet is pulled out. <P>SOLUTION: In the cylindrical roll storage box 10, the pair of side plates 20 covering both end faces include inner plates 19 and outer plates 16 overlapping. In the central portion of each inner plate 19, three approximately-triangular bendable flaps 37, 38, and 39 are formed by approximately-Y-shaped cuts 35. By pushing in the push-in flap 40 of the outer plate of each side plate with, for example, a finger while the cylindrical roll 30 is stored in the storage box 10, the three flaps 37, 38, and 39 separated by the approximately-Y-shaped cuts 35 of the inner plate are pushed and bent inside by the push-in flap 40 such that the flaps are inserted in the core hole 32 of each end of the cylindrical roll 30, thereby supporting the cylindrical roll 30. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wound cylinder storage box for storing a wrap film, and more particularly to an improvement in a flap structure provided on both side plates of a storage box for insertion into both ends of a core hole of the wound cylinder.

  Sheet winding cylinders such as wrap film, aluminum foil, and cooking paper are stored in a long and narrow box made of paper. When using, open the lid of the box and rotate the winding cylinder to pull out the sheet to the desired length. The sheet is cut and taken out by a saw blade cutter formed at the end of the lid.

  Flaps that are inserted into the core holes at both ends of the wound tubular body by being pushed from the outside with fingers or the like are formed on both side plates of the wound tubular body storage box. This flap is formed with glue lines and cut lines on the overlapped inner and outer plates that are glued together to form side plates. It is configured to be bent at the portion and pushed into the box and inserted into the core hole of the winding cylinder. By inserting this flap into the core holes at both ends of the winding cylinder, it is possible to prevent the winding cylinder from jumping out of the box when the sheet is pulled out.

  By the way, this flap can be pushed in by 1) a simple operation, 2) prevents the winding cylinder from popping out, 3) reduces the sheet pull-out resistance, and 4) the end of the sheet reaches the winding cylinder. If the sticking is difficult to take out, it is possible to take out the wound cylinder from the box. 5) There is no obstacle to the gluing of the side plate during assembly. 7) It is required that processing and assembly at the time of manufacturing the box are not complicated.

  As an improved technique of the flap structure provided on both side plates of such a cylindrical container storage box, for example, Patent Document 1 below discloses that U-shaped locking is performed on the outer plates of the left and right side plates via oblique crease lines. A wrap film storage box has been proposed in which a piece is provided and an auxiliary locking piece such as a horizontal U-shape that supports the U-shaped locking piece is provided on the inner plate.

  In Patent Document 2 below, rectangular flaps are formed on the outer plates of the left and right side plates via horizontal crease lines, and the same horizontal crease lines are formed at positions overlapping the rectangular flaps of the inner plate. A structure having a structure in which a semi-cylindrical flap is formed, a rectangular-shaped flap of the outer plate is pushed in, and the semi-cylindrical flap of the inner plate is tilted inward to be inserted into the core holes at both ends of the winding cylinder body is disclosed. Has been.

Further, in Patent Document 3 below, locking pieces are formed on the outer plates of the left and right side plates via a horizontal crease line, and the inner plate has the same horizontal fold line at a position overlapping the locking piece. And a support piece for supporting each locking piece is formed at the lower end of each locking piece via a horizontal crease line. .
Japanese Patent No. 3114407 JP 10-338228 A Japanese Patent No. 2937002

  As the flap structure for supporting the winding cylinder provided on both side plates of the winding cylinder storage box, various structures as described above have been proposed, but the above-mentioned requirements 1) to 7) are required. The one that satisfies all of the above has not yet been obtained.

  Accordingly, an object of the present invention is to provide a winding cylinder storage box that can satisfy almost all of the above-mentioned requirements 1) to 7) as a flap structure of both side plates forming a supporting structure of the winding cylinder. There is.

In order to achieve the above object, the present invention provides a wound cylinder storage box for storing a sheet wound cylinder such as a wrap film, aluminum foil, cooking paper,
A pair of side plates covering both end surfaces of the winding cylinder has an overlapped inner plate and outer plate,
The central portion of the inner plate is generally Y-shaped as a whole, and a vertical line is arranged substantially perpendicular to the bottom plate, and a bent line connecting the ends of the cut line. The three triangular flaps are formed so that they can be bent.
The central portion of the outer plate is surrounded by a fold line that is substantially parallel to a fold line that connects the ends of diagonal lines of the Y-shaped cut line, and a cut line that is connected to both ends of the fold line. The wound push-in flap is formed so as to overlap the intersecting portion of the Y-shaped cut line.

  According to the present invention, in a state where the winding cylinder is stored in the storage box, the three flaps separated by the Y-shaped cut line of the inner plate when the pressing flap of the outer plate of the both side plates is pressed with a finger or the like. Are pushed by the push-in flap and bent inward. At this time, when the flap having a fold line substantially parallel to the indented flap is bent substantially in parallel with the indented flap and inserted into the core holes at both ends of the winding cylinder, a force in the bending direction is applied to the indented flap. Is given a force to hold it down. Further, the remaining two flaps of the inner plate engage with the back surface side (the outer surface side of the storage box) with respect to the pushing direction of the pushing flap, and suppress the pushing flap from returning to the outside direction.

  Therefore, 1) each flap can be easily pushed in with a finger or the like, and 2) the push-in flap of the outer plate is supported from both sides by the flap of the inner plate, and the winding force is applied to the winding cylinder when the sheet is pulled out. It can be firmly supported so that the cylinder does not jump out of the box. 3) Since both sides of the overlapping outer plate push-in flap and the inner plate flap having a fold line parallel thereto are only in contact with the inner circumference of the winding cylinder, the sheet pull-out resistance is relatively small. 4) If the end of the sheet is stuck to the winding cylinder, pull the winding cylinder strongly in the direction of the opening of the box to push the outer plate and the folding line parallel to it. The flap of the inner plate having a bent portion can be further bent, and the winding cylinder can be easily pulled out. If the winding cylinder is housed in the box again, the two flaps return to the original and the winding cylinder Since it is inserted into the core hole, it can be returned to its original state. 5) Since the cut line and the fold line between the outer plate and the inner plate are provided at the center part of each plate, by gluing to the peripheral part of each plate, There are no obstacles. Further, 6) The gap formed by pushing the push-in flap by engaging the two flaps of the inner plate with the back surface side (the outer surface side of the storage box) with respect to the push-in direction of the push-in flap. Since it is closed by two flaps and becomes small, it is difficult for insects and dust to enter from the opening of the flap during storage. Further, 7) Since it is only necessary to form a cut line and a fold line on the inner plate and the outer plate forming both side plates, processing and assembly at the time of manufacturing the box are not complicated. As described above, according to the present invention, almost all of the requirements 1) to 7) described above can be satisfied.

  In this invention, it is preferable that the front-end | tip of the oblique line of the said Y-shaped cut line makes the convex curve outward, and is connected with the both ends of the said bending line. According to this, both end portions of the flap bent at the bending line connecting the leading ends of the oblique lines form a convex curve, so that it is easy to be inserted into the core hole of the winding cylinder body, and at the inner periphery of the winding cylinder body The resistance when contacted can be reduced.

  Moreover, it is preferable that the bending line of the pushing flap is substantially linear, and the cut line connected to both ends of the bending line has a curved line with both ends protruding outward. According to this, when pushing in a pushing flap, while being able to insert smoothly between each flap of an inner board, it can be made easy to insert in the core hole of a winding cylinder.

Furthermore, when the thickness of the paper constituting the storage box in the unfolded state is Tmm, and the length of the vertical line of the Y-shaped cut is Lmm, each length is set so as to satisfy the following formula 1. Is preferably set.
−25T + 40 <3L <−35T + 59 (Equation 1)
According to this, the length in the vertical direction of the two flaps that are engaged with the back surface side (the outer surface side of the storage box) with respect to the pushing direction of the pushing flaps and suppress the pushing flaps from returning to the outside direction. By adjusting according to the paper thickness, it is possible to sufficiently secure the locking force for preventing the pushing flap from returning.

  As described above, according to the winding tube storage box of the present invention, the winding tube that can satisfy almost all of the above-described requirements 1) to 7) as the flap structure of the side plates constituting the support structure of the winding tube. A body storage box can be provided.

Next, an embodiment of the present invention will be described with reference to the drawings.
Referring to FIGS. 1, 2 and 3 together, this cylindrical container storage box 10 is made of a cardboard cut into a developed shape as shown in FIG. 2 and provided with a crease line and a cut surface line at a necessary location. It has been.

  In addition, a crease line can be formed by, for example, pressing in a line shape or providing a perforated slit along a line to be bent of cardboard. The cut line can be formed by punching cardboard in a line along the line to be cut off. In the figure, the broken line is indicated by a dotted line, and the broken line is indicated by a solid line.

  In FIGS. 1 and 2, reference numeral 11 denotes a front plate, and a folded piece 12 is connected to the opening side of the front plate 11 through a fold line. Further, on both the left and right sides of the front plate 11, glued pieces 13 are also provided continuously through fold lines. Each gluing piece 13 is formed with a notch 14 for avoiding a push-in flap 40 described later.

  A bottom plate 15 is connected to the lower side of the front plate 11 via a fold line. An outer plate 16 is connected to the left and right sides of the bottom plate 15 via a fold line, and a folded piece 17 is also connected to the left and right sides of the outer plate 16 via the fold line.

  A rear plate 18 is connected to the rear end portion of the bottom plate 15 via a fold line. On the left and right sides of the back plate 18, an inner plate 19 is connected continuously through a fold line.

  An upper lid plate 21 is connected to the upper side of the back plate 18 via a fold line, and side pieces 22 are connected to the left and right sides of the upper cover plate 21 via a fold line. Further, a front cover plate 23 is connected to the front side of the upper cover plate 21 via a fold line, and glued pieces 24 are also connected to the left and right sides of the front cover plate 23 via the fold line. It is installed.

  Further, the front end edge of the front lid plate 23 forms a temporary fixing piece 28, and a temporary attachment point 28 a provided on the temporary fixing piece 28 is glued to the front plate 11. The temporary fastening piece 28 is formed with a cut line 29 for peeling the temporary fastening piece 28 from the front plate 11 and separating it from the front lid plate 23. A saw-toothed cutter 25 is fixed to the front lid plate 23 so that the cutter portion projects slightly forward from the cut line 29.

  Then, the unfolded paper sheet shown in FIG. 2 is bent at each crease line, the glue piece 13 is disposed between the outer plate 16 and the inner plate 19, and the outer plate 16, the glue piece 13, and The side plates 20 shown in FIGS. 1 and 3 are formed by gluing the inner plates 19 respectively.

  Moreover, the cover body 26 shown in FIGS. 1 and 3 is formed by gluing the gluing pieces 24 provided on both sides of the front cover plate 23 to the side pieces 22 provided on both sides of the upper cover plate 21. The The wound cylinder 30 is accommodated in the storage space 27 formed in this way.

  The folded piece 12 provided continuously with the front plate 11 and the folded piece 17 provided continuously with the outer plate 16 have an effect of making it difficult for the wound cylinder 30 to jump out of the storage space 27. Further, the folded piece 12 provided continuously with the front plate 11 also functions as a guide when the wrap film 31 is pulled out from the wound cylinder 30 as shown in FIG. In this embodiment, the wrap film 31 is wound around the wrap film 31, but the storage box of the present invention is also applied to other sheet wrap cylinders such as aluminum foil and cooking paper. be able to.

  The feature of the present invention resides in that a roll-out prevention mechanism that is inserted into the core hole of the roll cylinder 30 is provided on the side plate 20 in the roll cylinder storage box 10 having the basic configuration as described above.

  This pop-out prevention mechanism is constituted by each flap formed by a cut line and a crease line provided on the inner plate 19 and the outer plate 16.

  FIG. 4 is a view of the inner plate 19 viewed from the inside. A substantially Y-shaped cut line 35 is formed near the center of the inner plate 19. That is, the cut line 35 is formed by a vertical line 35a and diagonal lines 35b and 35c extending diagonally upward and downward from the upper end of the vertical line 35a. The vertical line 35 a is disposed substantially perpendicular to the bottom plate 15.

  Convex curves 35d and 35e are further provided at the ends of the oblique lines 35b and 35c. A fold line 36a connecting the ends of the curves 35d and 35e is formed. The crease line 36 a is disposed substantially parallel to the bottom plate 15. A portion surrounded by the oblique lines 35b and 35c, the curves 35d and 35e, and the crease line 36a forms a presser flap 37.

  Furthermore, a crease line 36b connecting the ends of the vertical line 35a and the oblique line 35b is formed, and a portion surrounded by them forms a support flap 38. Similarly, a crease line 36c that connects both ends of the vertical line 35a and the oblique line 35c is formed, and a portion surrounded by these forms a support flap 39. In addition, 32 in FIG. 4 is a core hole of the wound cylinder 30.

  FIG. 5 shows a shape of the outer plate 16 viewed from the outside. In the vicinity of the center portion of the outer plate 16, a fold line 41 that is substantially parallel to the fold line 36a of the inner plate 19 is formed. The crease line 41 is formed to be slightly shorter than the crease line 36a provided on the inner plate 19, and the both ends thereof are connected to a break line 42 made of a convex curve on the left and right sides. A portion surrounded by the crease line 41 and the cut line 42 forms a push-in flap 40.

  An intersection point of the cut line 35 of the inner plate 19 is located at a substantially central portion of the push-in flap 40. The dimensions of the flaps provided on the inner plate 19 and the outer plate 16 are not particularly limited. However, when the dimensions of each part are expressed as shown in FIG. 6, for example, the preferred ranges of the dimensions are as follows. .

  The width A of the side plate 20 is 42 to 55 mm, the height B of the side plate 20 is 42 to 55 mm, the height O of the pressing flap 40 is 9 to 15 mm, and the fold line 41 of the pressing flap 40 is from the fold line 36 a of the pressing flap 37. The length P from the upper end of the side plate 20 to the fold line 36a of the presser flap 37 is 15 to 30 mm, the length L of the vertical line 35a is 5 to 15 mm, and the lower end of the side plate 20 The length M from the fold line 36a of the presser flap 37 to the upper end of the vertical line 35a is 8 to 14 mm (however, shorter than the height O of the push-in flap 40). The width W1 of the presser flap 37 is preferably 15 to 25 mm, and the width W2 of the push-in flap 40 is preferably 15 to 25 mm.

  The reason why the above dimensions are preferable will be described as follows. The height O of the push-in flap 40 is to be pushed in with a finger and not to be caught in the inner diameter of the core hole 32 of the wound cylinder 30. The length P from the crease line 36a of the presser flap 37 to the crease line 41 of the push-in flap 40 is preferably as small as possible.

  The possible range of the length Q from the upper end of the side plate 20 to the fold line 36a of the presser flap 37 and the length M from the lower end of the side plate 20 to the lower end of the vertical line 35a are the size of the storage box 10 and the winding cylinder Although it varies depending on the outer diameter of the body 30, the inner diameter of the core hole 32, etc., it is determined in consideration of the upper and lower limit positions of each flap as shown in FIGS. FIG. 10 shows a state in which each flap is arranged at the upper limit, and FIG. 11 shows a state in which each flap is arranged at the lower limit. Both can be inserted into the core hole 32 of the winding cylinder 30 by pushing the push-in flap 40. However, in order to have practicality, the length Q is set to the gluing piece 13, the outer plate 16, and the inner plate. It is necessary to avoid the portion required for gluing 19 and, if the length M is too short, the strength of the storage box 10 is lowered, which is not preferable. Therefore, an optimum position range between FIG. 10 and FIG. It is necessary to decide.

  The length N from the fold line 36 a of the presser flap 37 to the upper end of the vertical line 35 a needs to be shorter than the push-in flap 40.

  The width W <b> 1 of the presser flap 37 is preferably slightly smaller than the inner diameter of the core hole 32 of the wound tubular body 30. By inserting the presser flap 37 into the core hole 32, the winding cylinder 30 can be held without rattling.

  The width W2 of the push-in flap 40 is preferably in the above range in order to prevent it from being pressed by a finger and from being too wide to bend in the vertical direction.

The length L (mm) of the vertical line 35a is determined in consideration of the thickness of the paper, the resistance when the push-in flap 40 is pushed in, the strength of return, and the like. Moreover, it is more preferable to set so that it may become the relationship of following Numerical formula 1 with the thickness (mm) of the paper which forms the winding cylinder storage box 10. FIG.
−25T + 40 <3L <−35T + 59 (Equation 1)

  In this way, by setting the length L of the vertical line 35a according to the thickness T of the paper, the pressing flap 40 is firmly supported by the supporting flaps 38 and 39 when the pressing flap 40 is pressed. Is possible.

  Next, the usage method of this winding cylinder storage box 10 is demonstrated. The winding cylinder 30 is housed in the winding cylinder storage box 10 and is sold in a state where the temporary fastening piece 28 of the front lid plate 23 is glued to the front plate 11 with a temporary attachment point 28a and sealed. Then, at the time of use, the temporary peeling piece 28 is separated from the front plate 11 while being separated by the cut line 29 during use. Then, the front lid plate 23 is separated from the front plate 11 so that the lid body 26 can be opened and closed, and the cutter portion of the sawtooth cutter 25 is exposed at the front edge of the front lid plate 23.

  Further, at the start of use, the user pushes the push-in flap 40 of the outer plate 16 provided on the side plates 20, 20 on both sides toward the inside of the wound tube storage box 10 with a finger or the like.

  Then, as shown in FIGS. 7 and 8, the push-in flap 40 is formed by winding the presser flap 37 and the support flaps 38 and 39 separated by the Y-shaped cut line 35 of the inner plate 19 inward. It is pushed inside the body storage box 10. As a result, the pressing flap 37 of the inner plate 19 overlaps with the pressing flap 40 of the outer plate 16 and is bent substantially in parallel. Further, the support flaps 38 and 39 of the inner plate 19 are bent inward by the push-in flap 40 and then engaged with the back surface side (the outer surface side of the winding cylinder storage box 10) with respect to the push-in direction of the push-in flap 40. In combination, the push-in flap 40 is prevented from returning outward.

  Thus, when the push-in flap 40 and the presser flap 37 are pushed inward of the winding cylinder body storage box 10 and inserted into the core hole 32 of the winding cylinder body 30, the wrap film 31 is pulled out from the winding cylinder body 30. It is possible to prevent the winding cylinder 30 from jumping out of the winding cylinder storage box 10.

  According to the wound cylinder storage box 10, the following operational effects are obtained.

  1) By simply pushing the push-in flap 40 of the outer plate 16 with a finger, the presser flap 37 and the push-in flap 40 are inserted into the core hole 32 of the roll tubular body 30 so that the roll tubular body 30 is rotatably supported. it can.

  When the push-in flap 40 is pushed in, when the tip of the push-in flap 40 exceeds the support flaps 38 and 39, it is well understood that a clicking sound is made and a light impact is transmitted to the finger to complete the push-in.

  2) When pulling out the wrap film 31, the presser flap 37 and the push-in flap 40 inserted into the core hole 32 cooperate to support the winding cylinder body 30, so that the winding cylinder body 30 does not pop out. Can be supported.

  3) Since the inner end of the core hole 32 of the winding cylinder 30 mainly contacts both side end portions of the presser flap 37, and the both side end portions are cut out by curved curves 35d and 35e protruding outward, The sliding resistance when the winding cylinder 30 rotates is small, and the pull-out resistance of the wrap film 31 can be reduced.

  4) When the wrap film 31 is stuck to the winding cylinder 30 and it is difficult to take it out, by strongly pulling the winding cylinder 30 in the direction of the opening of the winding cylinder storage box 10, The push-in flap 40 and the presser flap 37 are bent upward so that the wound tubular body 30 can be taken out relatively easily.

  And when pulling out the edge part of the wrap film 31 stuck to the winding cylinder 30, and storing the winding cylinder 30 in the winding cylinder storage box 10 again, the pressing flap 37 and the pushing flap 40 are the above-mentioned. On the contrary, it is pushed downward to allow the winding cylinder 30 to be stored in the storage space 27.

  Further, when the winding cylinder 30 is stored again, the pressing flap 40 supported by the support flaps 38 and 39 of the inner plate 19 inserts the pressing flap 37 into the core hole 32 of the winding cylinder 30. In this way, the winding cylinder 30 can be rotatably supported again so as to prevent the winding cylinder 30 from jumping out of the winding cylinder storage box 10.

  5) The cut line 35 of the inner plate 19, the crease lines 36a, 36b, 36c, and the like, and the fold line 41, the cut line 42, etc. of the outer plate 16 are formed near the center of each plate. The marginal part of the area leaves a space that can be glued. Therefore, it is easy to insert the glue piece 13 between the inner plate 19 and the outer plate 16 and glue these plates, and there is no obstacle to gluing of the outer plate 16 and the inner plate 19 during assembly. .

  6) As shown in FIGS. 1 and 7, since the lower space of the push-in flap 40 is supported by the pair of support flaps 38 and 39 in the state where the push-in flap 40 is pushed in, the opening of the side plate 20 as a whole is formed. It becomes small and it can prevent that an insect etc. penetrate | invade from this opening part.

  7) When manufacturing the wound cylinder storage box 10, it is only necessary to form the cut line and the crease line as described above on the outer plate 16 and the inner plate 19 as compared with the conventional storage box. Processing and assembly at the time of manufacturing the box 10 do not become complicated.

  As a roll-out prevention mechanism for the roll cylinder, (1) ease of setting and (2) pop-out prevention for the roll cylinder storage box having the side plate structure as shown in FIGS. Evaluation using 20 panelists on 6 items: function, (3) resistance to pulling out the film, (4) ease of taking out the roll, (5) obstacles to gluing, and (6) insects and dust do not enter. Went.

  The evaluation was made in four stages: very good… ◎, good… ○, slightly bad… △, bad… ×, and the determination was made based on the average evaluation of all panelists. In addition, each panelist conducted a use test assuming actual use. Invasion of insects and garbage was judged to have no intrusion prevention function when the pop-up prevention mechanism was actually set and the box was clearly unshielded on the outside and inside. The results are shown in Table 1.

In addition, (A)-(F) is a commercial item, (G) is the Example goods of this invention shown to the said FIGS.

  As shown in Table 1, it was only the sample (G) that was an example product of the present invention that was given an evaluation of “good” for all the evaluation items (1) to (6). It was.

It is a partially notched perspective view which shows the state which pushed in the pushing piece of the winding cylinder storage box by one Embodiment of this invention. It is an expanded view of the winding cylinder storage box. It is a perspective view which shows the state before pushing in the pushing piece of the winding cylinder storage box. It is explanatory drawing which shows the side plate of the winding cylinder storage box from the inner side. It is explanatory drawing which shows the side plate of the winding cylinder storage box from the outer side. It is explanatory drawing which shows the dimensional relationship of the cut line of the side plate of the same cylindrical body storage box, and a bending line. It is explanatory drawing which shows the state which pushed in the pushing piece of the winding cylinder storage box from the inner side of a side plate. It is sectional drawing along the AA arrow line of FIG. It is an expanded view which shows the structure of the side plate of each winding cylinder storage box used by the test example. It is explanatory drawing which shows the state which has arrange | positioned each flap to the upper limit in the winding cylinder storage box of this invention. It is explanatory drawing which shows the state which has arrange | positioned each flap to the minimum in the winding cylinder storage box of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Winding cylinder storage box 11 Front plate 12 Folding piece 13 Gluing piece 14 Notch 15 Bottom plate 16 Outer plate 17 Folding piece 18 Back plate 19 Inner plate 20 Side plate 21 Upper lid plate 22 Side piece 23 Front lid plate 24 Gluing piece 25 Cutter 26 Lid 27 Storage space 28 Temporary fixing piece 28a Temporary attachment point 29 Cut line 30 Winding cylinder 31 Wrap film 32 Core hole 35 Cut line 35a Vertical line 35b, 35c Diagonal line 35d, 35e Curve 36a, 36b, 36c Fold line 37 Presser flaps 38, 39 Support flap 40 Push-in flap 41 Fold line 42 Cut line

Claims (4)

In a winding cylinder storage box for storing a sheet winding cylinder such as a wrap film, aluminum foil, cooking paper,
A pair of side plates covering both end surfaces of the winding cylinder has an overlapped inner plate and outer plate,
The central portion of the inner plate is generally Y-shaped as a whole, and a vertical line is arranged substantially perpendicular to the bottom plate, and a bent line connecting the ends of the cut line. The three triangular flaps are formed so that they can be bent.
The central portion of the outer plate is surrounded by a fold line that is substantially parallel to a fold line that connects the ends of diagonal lines of the Y-shaped cut line, and a cut line that is connected to both ends of the fold line. A wound cylinder storage box, wherein the pushed-in flap is formed so as to overlap an intersection of the Y-shaped cut lines.   2. The wound tube storage box according to claim 1, wherein an end of the Y-shaped cut line oblique line forms an outwardly convex curve and is connected to both ends of the bent line.   The winding line according to claim 1 or 2, wherein the folding line of the push-in flap is substantially linear, and the cut line connected to both ends of the folding line has a curved line projecting outward at both ends. Tube storage box. When the thickness of the paper constituting the storage box in the unfolded state is Tmm, and the length of the vertical line of the Y-shaped cut is Lmm, each length is set so as to satisfy the following formula 1. The wound tubular body storage box according to any one of claims 1 to 3, which is set.
−25T + 40 <3L <−35T + 59 (Equation 1)

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