Packaging containers

Abstract

To provide a technique for inhibiting a handle arranged on a packaging container from falling into the packaging container.SOLUTION: A packaging container assembled from one flat board, comprises: a main body; a first lid board 52; a second lid board 58 superposed above the first lid board; a third lid board 56 superposed above the second lid board; an insert piece 68 bendably connected to the second lid board in an end edge on the opposite side across the second lid board, with respect to a part where the second lid board and the main body are connected together, and inserted in the main body; and a handle part 100. The handle part comprises: a handle base 102 arranged on the same flat plate as the second lid board; and at least one of a first end connected to the handle base through a bend line and arranged on the same flat plate as the main body and a second end connected to the handle base through a bend line 108e and arranged on the same flat plate as the insert piece. The third lid board may have a handle through-hole 56a in a portion overlapping with the handle part.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] This specification discloses a technology related to a packaging container provided with a handle.

Background Art

[0002] Patent Document 1 discloses a carton in which a handle panel is provided integrally with an end closing panel. The handle panel is bent along a central fold line to form a handle strap. The handle strap is arranged side by side with a second top panel. In the carton, a first top panel is stacked on the second top panel. The handle strap protrudes outside the carton through an opening for handle access in the first top panel.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above technology, if the handle panel is not fixed to the first top panel or the like by adhesion or the like, the handle panel may fall into the packaging container, and the handle strap may not be easily protruded outside the carton.

[0005] This specification provides a technology for suppressing the handle arranged in the packaging container from falling into the packaging container.

Means for Solving the Problems

[0006] This specification discloses a packaging container. The packaging container is assembled from a single flat sheet and comprises a body, a first lid plate flexibly connected to the body, a second lid plate flexibly connected to the body and overlapping the first lid plate, a third lid plate flexibly connected to the body and overlapping the second lid plate, an insertion piece flexibly connected to the second lid plate at the edge opposite to the second lid plate where the second lid plate and the body are connected, and inserted into the body, and a handle portion, wherein the handle portion comprises a handle base portion disposed on the same flat sheet as the second lid plate, a first end portion connected to the handle base portion via a fold line and disposed on the same flat sheet as the body, and at least one end portion of a second end portion connected to the handle base portion via a fold line and disposed on the same flat sheet as the insertion piece, and the third lid plate may have a handle through hole in the portion overlapping with the handle portion.

[0007] In this configuration, the user inserts their finger through the handle hole and hooks it onto the handle base, then pulls the handle base upward. This pulls at least one of the first and second ends of the handle, causing the handle to be pulled up above the third lid plate through the handle hole. The first lid plate is positioned below the second lid plate and the handle base. This prevents the handle base from falling into the packaging container. This avoids a situation where the user has difficulty pulling up the handle base.

[0008] The handle portion may include the first end and the second end.

[0009] By positioning both the first and second ends at each end of the handle portion, the balance of the packaging container when gripping the handle portion can be improved compared to a configuration where only one end of the first or second end is positioned.

[0010] The first cover plate may include a contact portion that contacts the handle portion when the handle portion is pulled upward from the through-hole for the handle, and a pair of slits that are spaced apart from each other between the contact portion and the other part of the first cover plate, each extending in the direction in which the handle portion extends.

[0011] When the handle is raised, the exposure of the contents of the packaging container can be suppressed by positioning the first lid plate so as to overlap the location where the handle was positioned before it was raised. In the above configuration, the first lid plate can be positioned to a location that contacts the handle when it is raised. In this configuration, by placing a pair of slits between the contact portion of the first lid plate and other parts, the contact portion becomes more easily deformed when pressed by the handle. This can suppress situations in which the handle is damaged due to strong contact between the first lid plate and the handle.

[0012] The contact portion may be curved so as to protrude toward the handle portion.

[0013] With the above configuration, compared to a configuration in which the contact portion is formed in a straight line, damage to the handle portion can be suppressed.

[0014] The second cover plate may have an engaging projection on its edge on the side to which the insertion piece is connected, which engages with the upper edge of the main body.

[0015] According to the above configuration, it is possible to prevent the second lid plate from falling into the packaging container. This also prevents the handle portion, which is positioned on the same flat surface as the second lid plate, from falling into the packaging container.

[0016] The main body may have an opening at its lower end that penetrates from the inside to the outside of the main body.

[0017] With this configuration, the contents of the packaging container can be removed from the packaging container through the opening.

[0018] The developed body for manufacturing the above-described packaging container is also novel and useful.

Brief Description of the Drawings

[0019] [Figure 1] Perspective view of the packaging container. [Figure 2] Exploded view of the packaging container. [Figure 3] Perspective view of the packaging container during manufacturing. [Figure 4] Perspective view of the packaging container during manufacturing following FIG. 3. [Figure 5] Perspective view of the packaging container during manufacturing following FIG. 4. [Figure 6] Perspective view of the packaging container with the handle pulled up. [Figure 7] View of the packaging container with the third cover plate opened, seen from above. [Figure 8] Rear view of the packaging container with the handle pulled up. [Figure 9] Cross-sectional view of the periphery of the handle end in a cross-section located at the center in the left-right direction of the packaging container with the handle pulled up.

Modes for Carrying Out the Invention

[0020] The packaging container 10 shown in FIG. 1 is used for packaging, transporting, and storing the contents. Further, the packaging container 10 is used, for example, for spraying powdery or granular agricultural spraying agents. Note that the contents stored in the packaging container 10 are not limited to this. In the drawings, the vertical direction, front-rear direction, and left-right direction used throughout this embodiment are shown. These vertical, front-rear, and left-right directions are used for facilitating the explanation of this embodiment and do not limit the usage direction of the packaging container 10.

[0021] The packaging container 10 has a rectangular parallelepiped shape. In modified examples, the packaging container 10 may have other shapes such as a cube or a cylinder. The packaging container 10 comprises a lid 50 and a body 20. The body 20 has a rectangular parallelepiped shape with an open top. The lid 50 closes the opening at the top of the body 20.

[0022] (Configuration of the unfolded storage container) As shown in Figure 2, the packaging container 10 is assembled by folding a single corrugated cardboard sheet BL1 along the fold lines. In Figure 2, the adhesive area to which adhesive is applied is represented by multiple parallel diagonal lines. The fold lines are drawn with thin dashed lines. At least one of a groove, perforation, or slit is formed along the fold lines to facilitate folding. Furthermore, the material of the packaging container 10 is not limited to corrugated cardboard, but may be made from other paper materials such as cardboard or materials other than paper.

[0023] The main body 20 comprises side plates 22, 24, 26, and 28, a bottom portion 40, and adhesive pieces 30. The side plates 22, 24, 26, and 28 are connected in the order of 22, 24, 26, and 28, forming the sides of the main body 20. The adhesive pieces 30 are connected to the side plates 22 via a fold line. The adhesive pieces 30 are bonded to the inner surface of the side plates 28. Multiple notches 32 are arranged at the lower end of the side plate 26 to form multiple openings. Slits are intermittently arranged in the notches 32 by perforations. The notches 32 comprise a pair of cuts extending in the vertical direction and a cut connecting the lower ends of the pair of cuts, positioned on the lower edge of the side plate 26. The user can form an opening by pulling up the portion enclosed by the notches 32 from below. Each of the multiple notches 32 is an example of an "opening".

[0024] A bottom section 40 is positioned at the lower end of the main body 20. The bottom section 40 comprises bottom plates 42, 44, 46, and 48. Each of the bottom plates 42, 44, 46, and 48 is connected to the lower edges of the side plates 22, 24, 26, and 28 via fold lines. Each of the bottom plates 42, 46, and 48 has a fold line. This allows the main body 20 to be folded when the packaging container 10 is not in use.

[0025] The lid 50 comprises a first lid plate 52, a third lid plate 56, and a second lid plate 58. The first lid plate 52 is connected to the side plate 22 via a fold line located at the upper edge of the side plate 22. The first lid plate 52 covers the main body 20 over its entire length in the left-right direction. An insertion piece 62 is connected to the edge of the first lid plate 52 opposite to the side plate 22 via a fold line. Contact portions 52a are located at the center of the first lid plate 52 in the left-right direction, and at both ends in the front-rear direction. In the first lid plate 52, the length in the front-rear direction of the area where the contact portion 52a is located is shorter than the length in the front-rear direction of the area where the contact portion 52a is not located. The area of ​​the first lid plate 52 where the contact portion 52a is not located covers the main body 20 over its entire length in the front-rear direction. In the first lid plate 52, each of the front-rear edge portions is recessed where the contact portion 52a is located. Each edge of each contact portion 52a is curved to protrude outward in the front-rear direction. At both the left and right ends of each contact portion 52a, a pair of slits 52b, 52b are positioned between the contact portion 52a and the rest of the first cover plate 52. Each of the pair of slits 52b, 52b extends parallel to the front-rear direction.

[0026] A locking piece 34 is provided on the side plate 22, projecting toward the first cover plate 52. The locking piece 34 extends from the side plate 22 to the first cover plate 52, beyond the fold curve at the boundary between the side plate 22 and the first cover plate 52, at the center in the front-rear direction. The locking piece 34 is provided with a fold curve that is aligned with the fold curve at the boundary with the first cover plate 52.

[0027] Notches 36 extending in the front-rear direction are positioned on the front and rear of the locking piece 34, along the fold line of the boundary with the first cover plate 52.

[0028] The second cover plate 58 is connected to the upper edge of the side plate 28 via a bent curve. The second cover plate 58 comprises two partial cover plates 58a, 58a. Insertion pieces 68 are connected via bent curves to the edges of the two partial cover plates 58a, 58a that are connected to the side plate 28 and to the edges opposite the second cover plate 58.

[0029] (Construction of the handle section) A handle portion 100 is positioned between the two partial cover plates 58a, 58a in the left-right direction. The handle portion 100 comprises a handle base portion 102 and handle ends 104, 106. The handle base portion 102 has a rectangular flat plate shape that extends parallel in the front-rear direction. The handle base portion 102 is positioned on the same flat plate as the second cover plate 58. The handle base portion 102 is detachably connected to each of the two partial cover plates 58a, 58a by perforations. In the front-rear direction, the handle base portion 102 extends from the front end to the rear end of the second cover plate 58. Multiple fold lines 108c are positioned on the handle base portion 102. The multiple fold lines 108c are parallel in the left-right direction and are positioned parallel to each other and spaced apart in the front-rear direction.

[0030] The front end of the handle base 102 is connected to the handle end 104 via a fold line 108d. The fold line 108d is located on the same straight line as the fold line at the boundary between the second cover plate 58 and the insertion piece 68. The handle end 104 is located on the same flat surface as the insertion piece 68. The handle end 104 is wider than the handle base 102 in the left-right direction. The handle end 104 is separated from the insertion piece 68 by a slit, except for the edge opposite to the handle base 102. In a modified example, the handle end 104 may be connected to the insertion piece 68 so as to be separable by perforations. At the edge opposite to the handle base 102, i.e., the lower edge, the handle end 104 is foldably connected to the insertion piece 68 via a fold line 108e.

[0031] The handle end 106 is connected to the rear end of the handle base 102 via a fold line 108b. The fold line 108b is located on the same straight line as the fold line at the boundary between the second cover plate 58 and the side plate 28. The handle end 106 is located on the same flat surface as the side plate 28. The handle end 106 has the same configuration as the handle end 104. The handle end 106 is separated from the side plate 28 by a slit, except for the edge opposite to the handle base 102. In a modified example, the handle end 106 may be connected to the side plate 28 so as to be separable by perforations. At the edge opposite to the handle base 102, i.e., the lower end, the handle end 106 is connected to the side plate 28 via a fold line 108a so as to be bendable.

[0032] The third cover plate 56 is connected to the upper edge of the side plate 26 via a bent curve. The third cover plate 56 covers the opening at the upper end of the main body 20. The third cover plate 56 extends over the entire length of the opening at the upper end of the main body 20 in both the left-right and front-back directions. The third cover plate 56 has a through hole 56a in the center in the left-right direction. The through hole 56a is rectangular. The length of the through hole 56a in the left-right direction is longer than the length of the handle base 102 in the left-right direction. The length of the through hole 56a in the front-back direction is shorter than the length of the handle base 102 in the front-back direction. A notch 56b that protrudes in a substantially semicircular shape toward the side plate 26 is connected to the through hole 56a. The through hole 56a and the notch 56b pass through the third cover plate 56. An insertion piece 66 is connected to the edge of the third cover plate 56 opposite to the side plate 26 via a bent curve. A locking hole 56c into which the locking piece 34 is inserted is located between the third cover plate 56 and the insertion piece 66.

[0033] (Assembly method for packaging containers) As shown in Figure 3, the side plates 22, 24, 26, 28 and bottom plates 42, 44, 46, 48 are assembled from the unfolded body BL1 to create a rectangular parallelepiped body 20 with an open top. Next, as shown in Figure 4, the first lid plate 52 is folded relative to the side plates 22 and placed over the opening of the body 20. The insertion piece 62 is folded relative to the first lid plate 52 and inserted into the body 20 along the inner surface of the side plate 26. Next, as shown in Figure 5, the second lid plate 58 is folded relative to the side plates 28 and placed on top of the first lid plate 52. The insertion piece 68 is folded relative to the second lid plate 58 and inserted into the body 20 along the inner surface of the side plate 24. The handle end 104 is folded relative to the handle base 102 along with the insertion piece 68 and inserted into the body 20 along the inner surface of the side plate 24.

[0034] Next, as shown in Figure 1, the third lid plate 56 is folded relative to the side plate 26 and placed on top of the second lid plate 58. The insertion piece 66 is folded relative to the third lid plate 56 and inserted into the main body 20 along the inner surface of the side plate 22 through the notch 36. Then, the locking piece 34 is folded and inserted into the locking hole 56c to assemble the packaging container 10. Of the two partial lid plates 58a, 58a, the partial lid plate 58a located closer to the locking piece 34 has a notch 58d to avoid contact with the locking piece 34.

[0035] In the packaging container 10, the first lid plate 52, the second lid plate 58, and the third lid plate 56 are stacked on top of each other from bottom to top. In the handle portion 100, a through hole 56a is located above the handle base portion 102, and a part of the center of the handle base portion 102 in the front-to-back direction is exposed to the outside. Below the handle base portion 102, the part of the first lid plate 52 that is sandwiched between contact portions 52a in the front-to-back direction is located.

[0036] As shown in Figure 6, the user inserts their finger through the notch 56b and hooks it onto the handle base 102. Below the notch 56b, a notch 58b is formed in the partial cover plate 58a. The notch 58b is positioned to overlap with the notch 56b. The notches 56b and 58b expose the side surface of the handle base 102 so that it can be contacted from above. As a result, the user can easily hook their finger onto the handle base 102. This makes it easier for the user to pull the handle base 102 upwards.

[0037] As can be clearly seen when the third cover plate 56 is opened, when the handle base 102 is pulled upward, the handle end 104 is bent relative to the insertion piece 68 as the handle base 102 moves, and inclined toward the inside of the main body 20 relative to the insertion piece 68. Similarly, as can be seen in Figure 8, the handle end 106 is bent relative to the side plate 28 as the handle base 102 moves, and inclined toward the inside of the main body 20 relative to the side plate 28. As a result, the handle portion 100 can be pulled upward.

[0038] As shown in Figure 7, one of the partial cover plates 58a has an engaging projection 58c on its edge on the side to which the insertion piece 68 is connected, which rests on the upper edge of the side plate 24 and engages with the upper edge of the side plate 24. The engaging projection 58c protrudes toward the side plate 24 from the edge of the partial cover plate 58a. This prevents the second cover plate 58 from falling downward. As a result, the handle portion 100 does not fall downward along with the second cover plate 58, which would make it difficult for the user to pull up the handle portion 100.

[0039] As shown in Figure 9, when the handle portion 100 is pulled up and the handle end 106 tilts inward towards the main body 20, the handle portion 100 contacts the contact portion 52a of the first cover plate 52. On both sides of the contact portion 52a, a pair of slits 52b extend in the direction in which the handle portion 100 extends, i.e., in the front-to-back direction. The distance between the pair of slits 52b is greater than the length of the handle base portion 102 in the left-to-right direction. Therefore, when the contact portion 52a is pressed against the handle portion 100, it can easily tilt relative to the other parts of the first cover plate 52. This prevents the contact portion 52a from strongly contacting the handle portion 100. When the handle portion 100 is pulled up, a gap is created between the two partial cover plates 58a, 58a. By making the portion of the first cover plate 52 that overlaps with the handle portion 100 larger, it is possible to prevent the interior of the main body 20 from being exposed when the handle portion 100 is pulled up. In the packaging container 10, by arranging the contact portion 52a, the first lid plate 52 can be made large enough to make contact with the handle portion 100 without placing an excessive load on the handle portion 100, even when the first lid plate 52 and the handle portion 100 come into contact.

[0040] The contact portion 52a contacts the handle portion 100 at its tip on the handle portion 100 side, but does not contact the handle portion 100 at other points. The portion of the contact portion 52a that contacts the handle portion 100 has a curved shape. Experiments have shown that this configuration suppresses damage to the handle portion 100 compared to a configuration in which the portion of the contact portion 52a that contacts the handle portion 100 is straight.

[0041] The user stores, for example, powdered or granular material such as agricultural sprays in the packaging container 10. The user can then spray the agricultural spray by pulling up the portion of the side plate 26 surrounded by the cutouts 32 from below to form an opening, grasping the handle 100, and carrying the packaging container 10 in a field or other farm area.

[0042] The packaging container 10 is made from a single unfolded sheet BL1. This eliminates the need to prepare, for example, the handle portion 100 as a separate part.

[0043] In the handle portion 100, handle ends 104 and 106 are positioned at each of the front-to-rear ends of the handle portion 100. This allows for better balance of the packaging container 10 when grasping the handle portion 100 and lifting the packaging container 10, compared to a configuration where one of the handle ends 104 or 106 is positioned at one of the front-to-rear ends of the handle portion 100. Furthermore, when the handle portion 100 is pulled upward, the corner between the handle base 102 and the handle ends 104 and 106 is extended in a straight line, allowing the handle portion 100 to protrude above the lid portion 50. By positioning the handle ends 104 and 106 at each of the front-to-rear ends of the handle portion 100, the protruding portion of the handle portion 100 can be increased. In a modified example, the handle portion 100 may have only one of the handle ends 104 or 106.

[0044] In the packaging container 10, the first lid plate 52 is positioned below the second lid plate 58 and the handle portion 100. This prevents the second lid plate 58 and the handle portion 100 from falling downwards. Therefore, it is possible to avoid a situation where the user has difficulty lifting the container due to the handle portion 100 falling down. With this configuration, it is not necessary to glue and fix at least one of the handle portion 100 and the second lid plate 58 to the third lid plate 56 or the like in order to prevent the handle portion 100 from falling down. As a result, when closing the lid portion 50 after opening the lid portion 50 and placing the contents into the main body 20, it is not necessary to use adhesive or the like to prevent the handle portion 100 from falling down. Although it is possible to prevent the second lid plate 58 and the handle portion 100 from falling downwards, at least one of the handle portion 100 and the second lid plate 58 may be fixed to the third lid plate 56 or the like. Furthermore, by stacking the first lid plate 52, the second lid plate 58, and the third lid plate 56, deformation of the main body 20 can be suppressed when the packaging container 10 is lifted by grasping the handle portion 100.

[0045] Multiple bends 108c are arranged on the handle base 102. With this configuration, the handle base 102 is more likely to bend when the handle portion 100 is pulled up.

[0046] Although embodiments of the present invention have been described in detail above, these are merely illustrative and do not limit the scope of the claims. The technologies described in the claims include various modifications and changes to the specific examples illustrated above.

[0047] For example, the modified packaging container does not necessarily have multiple notches 32 arranged on the side plate 26.

[0048] Furthermore, for example, the first cover plate 52 only needs to be configured to prevent the second cover plate 58 and the handle portion 100 from falling into the inside of the main body 20, and for example, at least one of the second cover plate 58 and the handle portion 100 should have a shape that overlaps from below.

[0049] Furthermore, the technical elements described herein or in the drawings demonstrate technical usefulness individually or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technologies illustrated herein or in the drawings achieve multiple objectives simultaneously, and achieving even one of these objectives constitutes technical usefulness in itself. [Explanation of Symbols]

[0050] 10: Packaging container, 20: Main body, 22, 24, 26, 28: Side plate, 30: Adhesive piece, 32: Notch part, 34: Locking piece, 36: Notch, 40: Bottom part, 50: Lid part, 52: First lid plate, 52a: Contact part, 52b: Cut, 56: Third lid plate, 56a: Through hole, 56b: Notch, 56c: Locking hole, 58: Second cover plate, 58a: Partial cover plate, 58b: Notch, 58c: Engagement protrusion, 58d: Notch, 68: Insertion piece, 100: Handle part, 102: Handle base, 104, 106: Handle end, BL1: Expandable body

Claims

1. A packaging container assembled from a single flat sheet, The main unit and A first lid plate is flexibly connected to the main body, A second cover plate is flexibly connected to the main body and overlaps the first cover plate, A third cover plate is flexibly connected to the main body and overlaps the second cover plate, An insertion piece is bendably connected to the second lid plate at the edge opposite to the second lid plate at the point where the second lid plate and the main body are connected, and is inserted into the main body. It is equipped with a handle and The aforementioned handle portion is, A handle base positioned on the same flat surface as the second lid plate, It comprises at least one end of a first end connected to the handle base via a bend and positioned on the same flat plate as the main body, and a second end connected to the handle base via a bend and positioned on the same flat plate as the insertion piece, The third cover plate has a through hole for the handle in the portion that overlaps with the handle portion. When the handle portion is pulled upward from the through-hole for the handle, At least one of the following states: the first end is inclined inward toward the packaging container relative to the main body, and the second end is inclined inward toward the packaging container relative to the insertion piece. A packaging container wherein a gap is provided between the first lid plate and the main body, on the side of the first end and the second end that is inclined inward of the packaging container, to receive the handle portion that is pulled upward from the handle through hole.

2. A packaging container assembled from a single flat sheet, The main unit and A first lid plate is flexibly connected to the main body, A second cover plate is flexibly connected to the main body and overlaps the first cover plate, A third cover plate is flexibly connected to the main body and overlaps the second cover plate, An insertion piece is bendably connected to the second lid plate at the edge opposite to the second lid plate at the point where the second lid plate and the main body are connected, and is inserted into the main body. It is equipped with a handle and The aforementioned handle portion is, A handle base is positioned on the same flat surface as the second lid plate, It comprises at least one end of a first end connected to the handle base via a bend and positioned on the same flat plate as the main body, and a second end connected to the handle base via a bend and positioned on the same flat plate as the insertion piece, The third cover plate has a through hole for the handle in the portion that overlaps with the handle portion. The first cover plate is, With the handle portion being pulled upward from the through-hole for the handle, the contact portion that contacts the handle portion, A packaging container comprising a pair of slits, each extending in the direction in which the handle portion extends, which are spaced apart from each other between the contact portion and the other portion of the first lid plate.

3. The packaging container according to claim 1 or 2, wherein the handle portion comprises the first end and the second end.

4. The packaging container according to claim 2, wherein the contact portion is curved to protrude toward the handle portion.

5. The packaging container according to any one of claims 1 to 4, wherein the second lid plate has an engaging projection on the edge on the side to which the insertion piece is connected that engages with the upper edge of the main body.

6. The packaging container according to any one of claims 1 to 5, wherein the main body has an opening at its lower end that penetrates from the inside to the outside of the main body.

7. A flat, unfoldable body for producing a packaging container according to any one of claims 1 to 6.