Packing box and packing box containing roll

Abstract

To provide a packing carton and a packing carton with a roll body therein that can restrict the deformation of the core of the roll body.SOLUTION: A packing carton 10 made of corrugated cardboard includes: a bottom member 15; a first sideboard 11 provided on the bottom member 15; and a second sideboard 12 that is provided on the bottom member 15 and at the position facing the first sideboard 11. The first sideboard 11 and the second sideboard 12 each have a bearing part 21 that supports a core 51 of a roll body 50, and a notch 22 with a narrower width than that of the bearing part 21 is formed at a lower part of each of the bearing part 21.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present embodiment relates to a packaging box and a packaging box containing a roll body. [Background technology]

[0002] Conventionally, a method for packing and transporting a large roll body has been to wrap the core of the roll body in a metal foil. There are methods for transporting the products by hanging them on a frame rack (see, for example, Patent Document 1), and methods for transporting the products by hanging them on wooden boards or frames (see, for example, Patent Document 1). A method of packaging a roll body using a frame is known. When using a box, costs are high, and when transporting within the same country, it is used as a commuter Although it is sometimes used, it is rarely used as packaging for export. When exporting packaging that uses frames, it is necessary to carry out fumigation treatment to protect against insects. This leads to increased costs. For this reason, cardboard boxes are now being used as packaging for exports. Various methods have been developed to improve the strength of cardboard packaging. and improvements have been made.

[0003] As a conventional corrugated cardboard packaging body, for example, as disclosed in Patent Document 2, The core of the roll body is supported by the bearing part, and the curved roll plate is used to support the roll. Support for this is being provided. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-161314 [Patent Document 2] Utility Model Registration No. 3088236 Summary of the Invention [Problem to be solved by the invention]

[0005] The present disclosure provides a packaging box and a packaging box containing a roll body that can suppress deformation of the core of the roll body. Provide a packaging box. [Means for solving the problem]

[0006] The packaging box according to the present embodiment is a cardboard packaging box, and includes a bottom member and a box-like structure on the bottom member. a first side plate provided on the bottom member, and a second side plate provided on the bottom member at a position facing the first side plate. and a second side plate attached to the first side plate, wherein the first side plate and the second side plate each have a roll. The bearings support the core of the body, and below each bearing there is a narrower width than the bearing. A notch is formed.

[0007] In the packaging box according to this embodiment, the cutout portion has a pair of cutout side portions, and the roll When viewed from the central axis direction of the roll body, the upper end of one of the notched side portions and the central axis of the roll body are The angle formed between the upper end of the other cutout side portion and the upper end of the other cutout side portion may be 20° or more and 100° or less.

[0008] In the packaging box according to the present embodiment, a third side plate is provided between the first side plate and the second side plate. A third side plate and a fourth side plate may also be provided.

[0009] The packaging box according to this embodiment may further include a lid member that covers the roll body.

[0010] The packaging box containing the roll body according to this embodiment is a packaging box according to this embodiment, and a roll body having a core, the core of the roll body being The bearing portion of the packaging box is supported by the bearing portion.

[0011] In the packaging box containing the roll according to this embodiment, the weight of the roll is 100 kg or more. The upper limit may be 800 kg or less.

[0012] In the packaging box containing the roll according to this embodiment, the cutout portion has a cutout bottom portion, and The roll body may be arranged so as not to come into contact with the bottom of the notch. [Effects of the Invention]

[0013] According to this embodiment, deformation of the core of the roll body can be suppressed. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 2 is an exploded perspective view showing a packaging box and a roll body according to the embodiment. [Figure 2] FIG. 2 is a front view showing a packaging box and a roll body according to the embodiment. [Figure 3] FIG. 10 is a front view showing a packaging box and a roll body according to a modified example. [Figure 4] FIG. 10 is a front view showing the force applied to the core of the roll body. [Figure 5] 1 is a graph showing the amount of deformation of the core after a predetermined number of days have passed for each of Example 1, Example 2, and Comparative Example 1. [Figure 6] 1 is a graph showing the distribution of pressure applied by the core to the bearing portion for each of Example 1, Example 2, and Comparative Example 1. [Figure 7] FIG. 4 is a diagram showing measurement positions of pressure distribution in a bearing portion. DETAILED DESCRIPTION OF THE INVENTION

[0015] An embodiment will be described below with reference to the drawings. Therefore, the size and shape of each part are exaggerated to make it easier to understand. In addition, it is possible to modify and implement the technology as appropriate within the scope of the technical concept. In the following drawings, the same parts are denoted by the same reference numerals, and some details are the same. Detailed explanations may be omitted. The material names are examples of embodiments, and are not limited to these. In this specification, terms that specify shapes or geometric conditions, e.g. For example, terms such as parallel, perpendicular, and perpendicular are used to mean not only their strict meanings but also the same things. This also includes the state of

[0016] In the following embodiments, the "X direction" refers to a direction perpendicular to the central axis of the roll body. The "Y direction" is the direction parallel to the central axis of the roll body. The "Z direction" is the direction parallel to the vertical direction. The horizontal plane is the direction parallel to the packing surface. It is a plane parallel to the floor on which the box is placed, and a plane parallel to the XY plane. , refers to the view from above in the vertical direction (Z direction), and "front view" refers to the view from the center of the roll body. It refers to the view from the axial direction (Y direction). Also, "side view" refers to the view parallel to the horizontal plane and This refers to the view from the direction perpendicular to the central axis of the ball body (X direction).

[0017] The configuration of the packaging box and the packaging box containing the roll body according to this embodiment will be explained with reference to FIGS. 1 to 3. and explain.

[0018] As shown in FIGS. 1 and 2, the packaging box 10 according to this embodiment is made entirely of cardboard. The roll body 50 is supported and used for packaging and transporting the roll body 50. It is used for.

[0019] Such a packaging box 10 includes a bottom member 15, a first side plate 11 provided on the bottom member 15, and a second side plate 12 provided on the bottom member 15 at a position opposite to the first side plate 11; The first side plate 11 and the second side plate 12 are provided with the core 5 of the roll body 50. 1. Below each bearing 21, there is a The first side plate 11 and the second side plate 12 are provided with a notch 22 having a small width W2. A third side plate 13 and a fourth side plate 14 are disposed between them.

[0020] The bottom member 15 is a box-shaped member located at the bottom of the packaging box 10. The bottom member 15 is made of cardboard and has a bottom surface 15a and a bottom surface 15a The bottom surface 15a is located at the periphery of the roll body 50 in a plan view. The bottom peripheral portion 15b has a rectangular shape that is elongated in the direction of the central axis CL. It protrudes upward from the edge and is formed along the periphery of the bottom surface 15a. 15b, the first side plate 11, the second side plate 12, the third side plate 13, and the fourth side plate 14 are provided inside the are placed.

[0021] The first side plate 11 is a plate-shaped member located on the negative side of the packaging box 10 in the Y direction. The first side panel 11 is made of corrugated cardboard and is erected upward from the bottom member 15. The first side plate 11 has a generally rectangular shape as a whole. A bearing portion 21 is formed to support the core 51. The bearing portion 21 is cut into a substantially U-shape when viewed from the front. The bearing portion 21 is notched, and the core 51 of the roll body 50 is inserted therein. As shown in FIG. 2, the bearing portion 21 has a pair of bearing side portions 21a and 21b. The pair of bearing side portions 21a, 21b has a bearing bottom portion 21c that is arc-shaped when viewed from the front. , respectively extending upward from both side ends of the bearing bottom portion 21c.

[0022] A notch 22 is formed below the bearing portion 21. The notch 22 is The notch 22 is cut downward in a substantially rectangular shape when viewed from the front. As shown in FIG. The pair of notched sides 22a, 22b and the notched bottom 22c are provided. 2b extend upward from both ends of the cutout bottom 22c. 22a and 22b have upper ends 22d and 22e, respectively, and each of the upper ends 22d and 22e is connected to the bearing bottom. At least on the bearing bottom 21c side of the notch 22, a roll The core 51 of the roll 50 is not accommodated in the packaging box 10. When this is done, a space is formed within the notch 22 .

[0023] As shown in FIG. 1, the thickness t1 of the first side plate 11 is, for example, 10 mm or more and 100 mm or less. The thickness may be, preferably, 15 mm or more and 80 mm or less, and more preferably, 20 mm or more. The top is less than 70mm.

[0024] The second side plate 12 is a plate-shaped member located on the positive side of the packaging box 10 in the Y direction, and is The second side plate 12 is provided in an upright position facing upward from the member 15. It is provided at a position facing the first side plate 11 in the direction of the axis CL (Y direction). The roll 52 of the roll body 50 is disposed between the first side plate 11 and the second side plate 12. The side panels 12 are made of corrugated cardboard and have a generally rectangular shape when viewed from the front. The second side plate 12 is provided with a bearing portion 21 for supporting the core 51 of the roll body 50. Furthermore, a notch 22 is formed below the bearing portion 21. The configuration of the first side plate 12, such as its shape and dimensions, is substantially the same as that of the first side plate 11, and detailed description thereof will be omitted. do.

[0025] The third side plate 13 is a plate-shaped member located on the positive side of the packaging box 10 in the X direction, and is The third side plate 13 is erected upward from the member 15. The third side plate 13 is connected to the first side plate 11 and the second side plate 12. The first side plate 11 and the second side plate 12 are located between the first side plate 11 and the second side plate 12 and are positioned inside the packaging box 10. The third side panel 13 is made of cardboard and has a rectangular shape when viewed from the side. It has the following characteristics.

[0026] The fourth side plate 14 is a plate-shaped member located on the negative side of the packaging box 10 in the X direction. The fourth side plate 14 is erected upward from the bottom member 15. The fourth side plate 14 is connected to the first side plate 11 and the second side plate 12. The first side plate 11 and the second side plate 12 are positioned between the first side plate 11 and the second side plate 12 of the packaging box 10. The fourth side panel 14 is made of cardboard and has a rectangular shape when viewed from the side. The fourth side plate 14 faces the third side plate 13 in the X direction. Between the third side plate 13 and the fourth side plate 14, the roll of the roll body 50 is The rule 52 is placed.

[0027] The configuration of the third side plate 13, such as its shape and dimensions, is substantially the same as that of the fourth side plate 14. In addition, the first side plate 11 and the second side plate 12 are held so as not to fall inward. If this is possible, the third side plate 13 and the fourth side plate 14 do not necessarily have to be provided.

[0028] On the top surface of the packaging box 10, a roll body 5 is accommodated between a first side plate 11 and a second side plate 12. The lid member 16 is located at the top of the packaging box 10. The cover member 16 is made of cardboard and has a top surface 16a and a periphery of the top surface 16a. The top surface 16a has a lid outer peripheral portion 16b that faces the central axis CL of the roll body 50 in a plan view. The outer lid portion 16b extends from the periphery of the top surface 16a downward. The cover member 16 extends in the direction of the first side and is formed along the periphery of the top surface 16a. The roll body 50 is fitted around the first side plate 11 and the second side plate 12. The cover member 16 is not necessarily provided.

[0029] The roll body 50 is housed in the packaging box 10 and comprises a core 51 and a roll of a material wound around the core 51. and a roll 52 wound thereon.

[0030] The core 51 is substantially cylindrical and is slightly deformed by the load of the roll 52. The core 51 may be, for example, a cardboard tube. The outer diameter D1 of the core 51 (see FIG. 2) ) may be, for example, 100 mm or more and 400 mm or less, and preferably 125 mm or more and 3 The core 51 has a thickness of 100 mm or less, and more preferably has a thickness of 150 mm or more and 250 mm or less. The thickness t2 (see FIG. 2) may be, for example, 10 mm or more and 40 mm or less, and preferably 1 The thickness is 5 mm or more and 30 mm or less, and more preferably 17 mm or more and 22 mm or less. According to the embodiment, as will be described later, even when the load of the roll 52 is applied, the deformation of the core 51 is prevented. Since the shape can be suppressed, the thickness t2 of the core 51 can be made thin.

[0031] The roll 52 is, for example, a long film or paper wound around a core 51. The film constituting the roll 52 may be, for example, a polyolefin film, polyester film, nylon film, elastomer film, rubber film Film, engineering plastic film, vinyl chloride film, cellulose film, Engineering plastic films, display films, solar cell films, vapor deposition films, Release film, adhesive film laminated with release film, laminated film It may also be a plastic film.

[0032] As shown in FIG. 1, the length L1 of the core 51 is, for example, 1000 mm or more and 3200 mm or less. It may be, preferably, 1600 mm or more and 2600 mm or less, and more preferably, 1 The length L2 of the roll 52 is, for example, 900 mm or more and 2200 mm or less. It may be 3100 mm or less, and preferably 1500 mm or more and 2500 mm or less. More preferably, the length L1 of the core 51 is 1800 mm or more and 2100 mm or less. The length L2 of the roll 52 is measured along the central axis CL of the roll body 50. This refers to...

[0033] The weight of the roll body 50 (total weight of the roll 52 and the core 51) is, for example, 100 kg or more. It may be 800 kg or less, preferably 300 kg or more and 600 kg or less, and more preferably Preferably, it is between 400 kg and 500 kg.

[0034] In this way, the packaging box 10 and the roll body 50 accommodated in the packaging box 10 form a roll body In this case, the core 51 of the roll body 50 is inserted into the bearing of the packaging box 10. On the other hand, the core 51 of the roll body 50 and the notch bottom 22c of the notch 22 are supported by the core 51 of the roll body 50. In this embodiment, the roll-containing packing box 3 0 is also provided. Note that multiple roll-containing packaging boxes 30 may be stacked one on top of the other. stomach.

[0035] FIG. 2 shows the bearing portion 21 in a state in which the core 51 of the roll body 50 is accommodated. 2 is a view seen from the direction of the central axis CL of the body 50 (front direction). The notch 22 has a width W1 slightly larger than the outer diameter D1 of the core 51. , which is narrower than the width W1 of the bearing portion 21. Here, the width W1 of the bearing portion 21 is the width of the The horizontal plane passing through the central axis CL of the core 51 and the pair of bearing side portions 21a, 21b are The width W2 of the notch 22 is the distance between the intersections of the pair of notch side portions 22a and 22b. The width W2 of the notch 22 is the distance between the upper ends 22d and 22e of the notch 22 measured in the X direction. Since the width W1 is narrower than the width W1 of the bearing portion 21, the core 51 is directly connected to the notch bottom 22c of the notch portion 22. As a result, the load of the roll body 50 is distributed to the left and right, as will be described later. Therefore, the stress that deforms the core 51 can be dispersed, and deformation of the roll body 50 can be suppressed. It becomes possible.

[0036] As shown in FIG. 2, when viewed from the direction of the central axis CL (when viewed from the front), one of the notched side portions 22a the upper end 22d of the roll body 50, the central axis CL of the roll body 50, and the upper end 22e of the other cutout side portion 22b. The angle formed by the two electrodes is defined as θ. In this case, the angle θ may be set to 20° or more and 100° or less, and is preferably set to 0° or more. Preferably, the angle is 21° or more and 90° or less, and more preferably, 22° or more and 80° or less. Furthermore, the width W1 of the bearing portion 21 is determined in advance in accordance with the outer diameter D1 of the core 51. The width W2 of the notch 22 is set so that the angle θ is within the above range with respect to the width W1 of the notch 1. As a result, as will be described later, the stress that deforms the core 51 can be dispersed, and the roll body 5 The deformation of 0 can be suppressed.

[0037] The width W1 of the bearing portion 21 may be, for example, 90 mm or more and 400 mm or less, and preferably It is 125mm or more and 300mm or less, and more preferably 150mm or more and 250mm or less. The width W2 of the notch 22 may be, for example, 20 mm or more and 200 mm or less. Preferably, it is 50 mm or more and 160 mm or less, and more preferably, it is 80 mm or more and 120 mm or less. The height H1 of the notch 22 is set to a distance such that the core 51 does not come into contact with the notch bottom 22c. For example, it may be set to 1 mm or more and 75 mm or less.

[0038] As shown in FIG. 3, the pair of bearing side portions 21a and 21b are oriented in the vertical direction (Z direction). In this case, the distance between the pair of bearing side portions 21a and 21b may be inclined relative to the direction of the bearing. The core 51 may be attached to the bearing portion 21 in such a manner that the width of the core 51 is increased from the bottom to the top. On the other hand, it can be easily inserted from above downwards.

[0039] Next, the operation of this embodiment having the above-described configuration will be described.

[0040] First, the packaging box 10 is prepared in a state before the roll body 50 is housed therein.

[0041] Next, a roll body 50 having a roll 52 and a core 51 is prepared. The cores 51 are then housed in the packaging box 10. During this process, a pair of chucking devices (not shown) are attached to the cores 51. Then, the roll body 50 is lifted up by a crane or other means. Both ends of the core 51 of the body 50 are respectively connected to the bearing portion 21 of the first side plate 11 and the bearing portion 22 of the second side plate 12. The bearings 21 are inserted from above. Then, the chucking device is removed from the core 51. Remove.

[0042] In this way, a roll including the packaging box 10 and the roll body 50 accommodated in the packaging box 10 is The roll-containing packing box 30 is then stored for a predetermined period of time. or transported to another location.

[0043] In this way, the roll body 50 is accommodated in the packaging box 10, and after a certain time has passed, the bearing portion 21 This may cause deformation of the core 51 of the roll body 50. When storing or transporting the roll body 50, the shape of the bearing portion 21 affects the roll. In general, the width W1 of the bearing portion 21 is In order to make it easier to remove the body 50, the outer diameter D1 of the core 51 (see FIG. 2) is set to a certain extent. Therefore, when storing or transporting the heavy roll body 50, the core There is a risk that the core 51 may be deformed by the weight of the roll 52. Specifically, In this case, the outer diameter in the vertical direction of the core 51 becomes larger than the outer diameter in the vertical direction of the core 51. When the roll body 50 is taken out of the packaging box 10, the core 51 must not be inserted into the chucking device. There is a risk of problems such as

[0044] In contrast to this, according to this embodiment, there is a gap below the bearing portion 21 that is wider than the width W1 of the bearing portion 21. The notch 22 has a narrow width W2. This allows the load of the roll body 50 to be distributed from the front. The stress that deforms the core 51 is dispersed in the left and right directions as viewed from the outside. can be suppressed.

[0045] That is, according to this embodiment, as shown in FIG. 4(a), a notch is provided below the bearing portion 21. The core 51 does not come into contact with the bottom 22c of the notch 22. The force Mg acting on the core 51 from above to below in the direction of the bearing The diagonal forces N from both sides of the core 51 can cancel each other out. The forces acting to deform the core 51 from above and below can be reduced, thereby reducing the deformation of the core 51.

[0046] On the other hand, as a comparative example, as shown in FIG. 4(b), a notch 22 is formed below the bearing portion 21. If the bearing 21 is not provided with the core 51, the weight of the core 51 will be supported by the lower part of the bearing 21. The force Mg acting on the core 51 from above to below in the vertical direction, which tries to crush the core 51, is This force is counteracted by a force N directed vertically upward from the lower part of the bearing portion 21. The force that tries to deform 51 from above and below is large, and the deformation of core 51 becomes large. cormorant.

[0047] As described above, according to this embodiment, a width W1 of the bearing portion 21 is provided below the bearing portion 21. Since the notch 22 having the width W2 is formed, even when the load of the roll body 50 is applied, Therefore, deformation of the core 51 can be suppressed.

[0048] Furthermore, according to this embodiment, the upper end 22d of one of the notched side portions 22a and the roll body 50 The angle θ between the center axis CL and the upper end 22e of the other cutout side portion 22b is equal to or greater than 20° and equal to or less than 100°. This allows the stress that deforms the core 51 to be dispersed, and the roll body 5 This can more effectively suppress the deformation of 0.

[0049] [Example] Next, a specific example of this embodiment will be described.

[0050] Example 1 A packaging box having the configuration shown in Figures 1 and 2 was produced. In this case, the first side plate and the second side plate The thickness of each is 40 mm, the width W1 of the bearing part is 202 mm, and the width W2 of the notch is 1 The roll body was packed in this packing box. The roll body weighed 430 kg. The core length L1 was 2030 mm. is 2110 mm, the outer diameter D1 of the core is 203 mm, and the thickness t2 of the core is 21.5 The distance between the upper end of one notch side, the central axis of the roll body, and the upper end of the other notch side was The angle θ between the two was 60°. After that, the deformation of the core after a certain number of days had passed The deformation of the core was measured by the inner diameter of the core in the horizontal direction (X direction) and the inner diameter of the core in the vertical direction (Z direction). The difference between the inner diameter in the horizontal direction and the inner diameter in the vertical direction (inner diameter in the horizontal direction - inner diameter in the vertical direction) was calculated.

[0051] Example 2 The width W2 of the notch was set to 50 mm, and the angle θ was set to 28°. Similarly, a packing box is prepared, and the core is then packed in a roll body. The deformation amount was measured.

[0052] (Comparative Example 1) A packaging box was prepared in the same manner as in Example 1, except that no notch was provided. The deformation of the core was measured after a predetermined number of days had passed since the core was placed in the container.

[0053] Figure 5 and Table 1 show the deformation of the core after a certain number of days have passed, i.e., the horizontality of the core. This indicates the difference between the inner diameter in the vertical direction of the core and the inner diameter in the vertical direction of the core.

[0054] [Table 1]

[0055] As shown in FIG. 5 and Table 1, the deformation of the core after the passage of time was The core of Example 2 had the smallest value, followed by the core of Comparative Example 1, which had the largest value. As shown in the figure, by providing notches in the first and second side plates, deformation of the core is suppressed. I was able to do it.

[0056] Next, for each of the above-mentioned Example 1, Example 2 and Comparative Example 1, the roll body was stored. The pressure distribution in the bearing was measured immediately after the bearing was installed. The sensor sheet is attached to the bearing and pressure is measured. The pressure was measured at a position vertically below the central axis CL of the roll body, which was defined as 0° (center). When the angle from the center is -70° to 70° (total 140°), the 44 That is, as shown in FIG. 7, the angle α between the line segments L0 and La was -70 The pressure was measured at 44 points in the range of -70° to 70° (-70°≦α≦70°). The line segment L0 is a line segment that extends vertically downward from the central axis CL (α=0°). a is the line segment connecting the central axis CL and the measurement point Pa. The pressure is measured in the thickness direction of the bearing. The average value of the five points was used. The pressure distribution in the angle range of -70° to 70° (total 140°) from the center is show.

[0057] As shown in FIG. 6, the core of Example 1 is positioned so that the angle α from the center is about ±50°. The core of Example 2 has a pressure peak at a position where the angle α from the center is about ±35°. The core of Comparative Example 1 has a pressure peak at each of the angles α from the center of ±10°. Thus, the pressure peaks were located at the positions where the notches were formed in the first and second side plates. It can be seen that the pressure applied to the core is dispersed by providing the portion.

[0058] A plurality of components disclosed in the above embodiments and modifications may be appropriately combined as needed. Alternatively, it is possible to use several components from all the components shown in the above embodiment and modified examples. Some components may be deleted. [Explanation of symbols]

[0059] 10 Packing box 11 First side panel 12 Second side panel 13 Third side panel 14 Fourth Side Panel 15 Bottom member 16 Lid member 21 Bearing section 22 Notch 50 roll body 51 cores 52 rolls

Claims

1. Cardboard packaging box and a roll body that is housed in the packaging box and has a core, The packaging box is A bottom member; a first side plate provided on the bottom member; a second side plate provided on the bottom member at a position opposite to the first side plate, the first side plate and the second side plate each have a bearing portion that supports a core of a roll body, The bearing portion has a bearing bottom portion that is arc-shaped in a front view, A notch having a width narrower than the width of each bearing portion is formed below each bearing portion, the core of the roll body is supported by the bearing portion of the packaging box, A packaging box containing a roll body, wherein the maximum value of the peak pressure applied by the core to the bearing portion when viewed from the direction of the central axis of the roll body is located at an angle of approximately ±50° from the center or an angle of approximately ±35° from the center, when a position vertically below the central axis of the roll body is defined as 0°.

2. The width of the bearing portion is 90 mm or more and 400 mm or less, The width of the notch is 20 mm or more and 200 mm or less, The packaging box containing the roll according to claim 1 , wherein the height of the notch is 1 mm or more and 75 mm or less.

3. 3. The packaging box containing the roll according to claim 1, wherein the weight of the roll is 100 kg or more and 800 kg or less.

Images