JP2019116292A - Packaging box - Google Patents

Abstract

To provide a packaging box disassemblable into a compact folded state with simple operation, causing little protrusion of flaps.SOLUTION: An outer cover break line 36 of an outer cover piece 32 comprises a main part 36a roughly parallel with a front folding ruled line 34, a first oblique part 36b obliquely protruded in an obtuse angle from one end of the main part 36a and leading to one end of the front folding ruled line 34, and a second oblique part 36c obliquely protruded in the obtuse angle from the other end of the main part 36a and leading to one tip end side corner part of the outer cover piece 32. A first outer cover folding ruled line 38 of the outer cover piece 32 is obliquely protruded in the obtuse angle from one end of the main part 36a and extended toward the other tip end corner part of the outer cover piece 32, and a second outer cover folding ruled line 40 is obliquely protruded in the obtuse angle from the other end of the main part 36a and extended toward the other end of the front folding ruled line 34. An inner cover folding ruled line 54 of an inner cover piece 50 is obliquely extended from one end of a rear folding ruled line 52. In an assembled state, the first outer cover folding ruled line 38 superposes on the inner cover folding ruled line 54.SELECTED DRAWING: Figure 1

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a sealed end carton type packaging box, and more particularly to an easy-discarding packaging box provided with a breaking line for disassembling used at the time of disposal.

  2. Description of the Related Art Conventionally, a seal end carton type packaging box in which a single box forming piece is three-dimensionally assembled has been used as a packaging box for storing and transporting goods for display at a storefront or the like.

  Conventionally, as disclosed in, for example, Patent Document 1, it has a front plate, a pair of side plates and a back plate that form a cylindrical body (rectangular cylindrical peripheral wall), and an inner bottom plate extends to the lower end of the back plate. The outer bottom plate is extended at the lower end of the front plate, the inner bottom flaps are respectively extended at the lower ends of the pair of side plates, and the pair of inner bottom flaps is turned over so as to close the opening of the cylindrical body. A seal end carton is disclosed in which the inner bottom flap is stacked, the outer bottom plate is stacked on the inner bottom plate and glued, and the opening of the tubular body is closed. This seal end carton has a score line for dismantling between the base ends of the outer bottom plate, and a pair of inner bottom flaps have valley fold lines extending diagonally from the corners in a portion near the base of the middle bottom plate. ing.

  When this seal end carton is discarded, it is dismantled by pressing the front plate and the back plate in the direction to approach each other with the top surface open, and then pressing the front plate and the back plate in either the left or right direction. And the insole flap can be broken along the valley fold line and dismantled into a non-bulky folded state.

JP, 2016-193760, A

  However, when the seal end carton of Patent Document 1 is disassembled and folded, the outer bottom plate, the inner bottom plate, and the inner bottom flap protrude from the lower end of the cylindrical body, so the box to be discarded becomes bulky. There has been a need for more compact, foldable and disposable packaging boxes.

  The present invention has been made in view of the above background art, and it is an object of the present invention to provide a packaging box which can be disassembled into a compact folded state by a simple operation.

  According to the present invention, the box-shaped piece is formed by connecting a front plate, a back plate and two side plates to each other via creases parallel to each other, and the front plate An outer lid piece is extended at the edge parallel to the connecting direction via a front crease, and an inner lid is extended at the edge parallel to the connecting direction at the rear plate via a rear crease. In the assembled state, the front plate, the back plate, and the two side plates form a tubular body having a rectangular cross section, and the inner lid piece falls over the open end side of the tubular body, and the outer lid A packaging box in which a piece overlaps the inner lid piece, the outer lid piece is glued to the inner lid piece, and the open end of the cylindrical body is closed, and the inside of the outer lid piece, An outer lid break line and an outer lid break line are provided, and the outer lid break line is from one end of the front crease line to one tip side angle of the diagonal of the outer lid piece And the outer lid fold line extends from the other end of the front fold line toward the other end corner of the diagonal of the outer lid piece, and the inner lid piece is internally folded with the back fold An inner lid creased line extending obliquely from one end of the creased line is provided, and in the assembled state, the tip end side portion of the outer lid piece is glued to the inner lid piece, and the outer lid folded creased line overlaps the inner lid folded crease, The outer lid piece is pushed inward to break the outer lid break line, and the corner of the cylindrical body is pushed diagonally so as to widen the broken portion of the outer lid break line. A packaging box in which the outer lid folding crease and the inner lid folding crease are bent inward, the cylindrical body is folded flat, and the outer lid piece and the inner lid piece are accommodated in the cylindrical body. It is.

  In particular, an outer lid break line and a first and second outer lid crease line are provided inside the outer lid piece, and the outer lid break line is a main part facing the front crease line at an interval. A first oblique portion which projects obliquely from one end of the main portion at an obtuse angle and reaches one end of the front crease, and protrudes obliquely at an obtuse angle from the other end of the main portion to one tip side of the outer lid piece And a second oblique portion reaching a corner, and the first outer lid folding crease obliquely projects from the one end of the main portion at an obtuse angle and extends toward the other tip corner of the outer lid. And the second outer lid creased line projects obliquely from the other end of the main portion at an obtuse angle and extends toward the other end of the front creased surface, and the inner back of the inner lid piece is the rear surface. An inner lid creased line extending diagonally from one end of the creased line is provided. Then, in the assembled state, a portion on the tip side of the main part and the first and second oblique parts of the outer lid piece is glued to the inner lid piece, and the first outer lid folded ruled line is the inner lid folded creased line , And both ends of the outer lid fracture line of the outer lid piece are placed so that the outer lid fracture line is broken by pushing the outer surface of the outer lid piece inward and the broken part of the outer lid fracture line is expanded. The first and second outer lid fold creases and the inner lid fold creases are bent inward by pushing the corners of the tubular body in the diagonal direction so that the positioned diagonals are close to each other. The body is folded flat, and the outer cover piece and the inner cover piece are accommodated in the cylindrical body.

  In the assembled state, the main portion of the outer cover piece is disposed at a position where the opening of the cylindrical body is divided into two in parallel with the front crease, and the first oblique portion, the second oblique portion, It is preferable that the first outer cover creased line and the second outer cover creased line are configured to protrude obliquely from the main portion at an angle of 135 degrees.

  In the two side plates, side flaps are respectively extended via side creases at an edge parallel to the connecting direction, and in an assembled state, the two side flaps are on the open end side of the cylindrical body. And the side flaps on the side where the first oblique portion is opposed, the end edge closer to the back plate is closer to the tip of the side flap from the back plate The side flap inclined toward the second side facing the second oblique portion is inclined so as to be away from the front plate as the end edge closer to the front plate is closer to the tip of the side flap, When the tubular body is folded flat, the two side flaps may be accommodated in the tubular body.

  The packaging box of the present invention can be easily operated and reduced in protrusion of flaps and the like, and can be disassembled into a compact folded state, and disposal after use is easy.

It is the expanded view which looked at the box side formation piece which forms the packaging box of one Embodiment of this invention from surface side. It is a figure which shows the assembled state of the packaging box of this embodiment, Comprising: The perspective view (a) which looked at this packaging box from the bottom side, and the perspective view (b) seen from the top side. It is an enlarged view which shows the outer cover piece and the inner cover piece which comprise the bottom face of Fig.2 (a). It is a figure (a), (b) which shows operation which disassembles the bottom face of the packaging box of this embodiment. It is a figure which shows the folded state after dismantling the packaging box of this embodiment.

  Hereinafter, an embodiment of a packaging box of the present invention will be described based on the drawings. As shown in FIGS. 2A and 2B, the packaging box 10 according to the embodiment of the present invention is a seal end in which both ends (top and bottom sides) of a rectangular cylindrical body are closed. It is a carton-type box, and is formed by assembling the box-forming piece 12 shown in FIG.

  The box-forming piece 12 is formed by punching out a single blank sheet such as thick paper, and the first side plate 14, the front plate 16, the second side plate 18, and the back plate 20 are connected in order. Furthermore, on the side of the back plate 20, a pasted piece 22 pasted to be opposite to the back side of the first side plate 14 in an assembled state is connected. The connecting direction lengths of the first side plate 14 and the second side plate 18 are short and substantially equal to each other, and the connecting direction lengths of the front plate 16 and the back plate 20 are long and substantially equal to each other. The first side plate 14, the front plate 16, the second side plate 18, the back plate 20, and the gluing piece 22 are separated by fold lines 24, 26, 28, 30 respectively.

  A substantially rectangular outer cover piece 32 is extended at an end on the bottom surface side of the front plate 16 and is separated from the front plate 16 by a front crease line 34. The extended length of the outer cover piece 32 is the same as or slightly shorter than the length in the connecting direction of the first side plate 14. Furthermore, an outer lid break line 36 and first and second outer lid fold lines 38, 40 are provided inside the outer lid piece 32.

  The outer lid breaking line 36 has a main portion 36a facing the front creased line 34 at intervals, and a first oblique portion 36b protruding obliquely from one end of the main portion 36a at an obtuse angle and reaching one end of the front creased line 34; A second oblique portion 36 c which protrudes obliquely from the other end of the main portion 36 a at an obtuse angle and reaches one end side corner portion of the outer lid piece 32. The first outer lid folding ruled line 38 protrudes obliquely at an obtuse angle from one end (one end on the first oblique portion 36b side) of the main portion 36a and extends toward the other tip corner of the outer lid 32 The outer lid creased line 40 protrudes obliquely from the other end (one end on the second oblique portion 36c side) of the main portion 36a at an obtuse angle and extends toward the other end of the front creased line 34.

  Further, an outer cover piece 42 having substantially the same outer shape as the outer cover piece 32 is extended to an end portion on the top surface side of the front plate 16 and is separated from the front plate 16 by a fold line 44.

  At the end on the top surface side of the front plate 16, a breaking line 46 for opening is provided. The tearing line 46 for opening is formed in a trapezoidal shape so that both ends thereof overlap with both ends of the creased line 44 and the central portion is in the front plate 16. A portion surrounded by the tearing line 46 for opening and the folding line 44 becomes a pressing portion 48 which is pressed when the packaging box 10 in the assembled state is opened.

  A substantially rectangular inner lid piece 50 is extended at an end on the bottom surface side of the back plate 20, and is separated from the back plate 20 by a back crease line 52. The extension length of the inner lid piece 50 is about 4/5 of the connecting direction length of the first side plate 14 and slightly shorter than the outer lid piece 32. Inside lid piece 50 is provided an inner lid folding ruled line 54 extending diagonally from one end (one end on the side of second side plate 18) of rear folding line 32, and inner lid piece 50 has a main portion 50a and a corner It is divided into 50b. An inner lid piece 56 having substantially the same outer shape as the inner lid piece 50 is extended to the end on the top surface side of the back plate 20, and is separated from the back plate 20 by a fold line 58.

  A side flap 60 is extended at the end on the bottom side of the first side plate 14, and is separated from the first side plate 14 by a side fold line 62. The extension length of the side flaps 60 is slightly shorter than half of the length in the connecting direction of the front plate 16. The edge 60 a on the outer lid 32 side of the side flap 60 is inclined so as to be away from the outer lid 32 closer to the tip of the side flap 60. A trapezoidal side flap 64 is also extended to the end on the top surface side of the first side plate 14 and is separated from the first side plate 14 by a fold line 66. The extended length of the side flaps 64 is substantially the same as the side flaps 60.

  A side flap 68 is extended at the end on the bottom side of the second side plate 18 and is separated from the second side plate 18 by a side crease 70. The extension length of the side flaps 68 is slightly shorter than half of the length in the connecting direction of the front plate 16. An end edge 68 a of the side flap 68 on the side of the inner lid piece 50 is inclined so as to be away from the inner lid piece 50 closer to the tip of the side flap 68. A trapezoidal side flap 72 is also extended to the end on the top surface side of the second side plate 18 and separated from the second side plate 18 by a fold line 74. The extended length of the side flaps 72 is substantially the same as the side flaps 68.

  Next, an example of a method of assembling the box-forming piece 12 will be described. FIG. 1 shows the box-forming piece 12 as viewed from the front side. Hereinafter, the folding method in which the front side of the box-forming piece 12 is convex is referred to as normal folding, and the folding method in which the back side is convex is referred to as reverse folding.

  First, glue is applied to the surface of the glued piece 22, the creased line 28 is folded in a straight line, and the creased line 24 is folded in a straight line, and the surface of the glued piece 22 and the back of the first side plate 14 are glued. The box forming piece 12 is shipped from the manufacturing plant of the packaging box 10 in the folded state.

  Next, in a factory or the like for storing and packaging goods, the creased lines 24, 26, 28, 30 are each folded in a 90-degree manner to form a rectangular tubular body 76. Then, the side flaps 60 and 68 on the bottom side are correctly folded at 90 degrees by the side fold lines 62 and 70 respectively, and the inner lid piece 50 is correctly folded at 90 degrees at the back fold lines 52. After applying the glue to the portion surrounded by the main portion 36a, the second oblique portion 36c and the first outer lid folding crease 38, the outer lid 32 is folded at 90 degrees with the front folding ridge 34, and the outer lid The pieces 32 are overlapped and glued to the inner lid piece 50. By this operation, the bottom end of the cylindrical body 76 is closed. After this, the product is inserted inside from the open end of the top surface side of the cylindrical body 76.

  Thereafter, the side flaps 64 and 72 on the top side are correctly folded at 90 degrees by the creased lines 66 and 74, respectively, and the inner lid piece 56 is correctly folded at 90 degrees at the folded creases 58. After the glue 78 is applied, the outer lid piece 42 is folded in a regular manner at 90 degrees with the fold line 44, and the outer lid piece 42 is overlapped and glued onto the inner lid piece 56. By this operation, the end portion on the top surface side of the cylindrical body 76 is also closed to be in the assembled state shown in FIGS. 2A and 2B, and the product packaging operation is completed.

  In addition to the above, in the order of storing the goods, the outer lid piece 42 on the top side is glued to the inner lid piece 56 and closed as described above, and the goods are stored from the bottom side, and then the bottom side May be closed as described above.

  In the assembled state, as shown in FIG. 3, the first outer cover folding line 38 of the outer cover 32 on the bottom side substantially overlaps the inner cover folding line 54 of the inner cover 50. Further, although not shown in FIG. 3, the side flaps 68 face the area of the outer lid piece 32 where the first oblique portion 36 b is formed, and the edge 68 a of the side flaps 68 is at the tip of the side flaps 68. The closer to the back plate 20, the closer it is to be disposed to be inclined. Also, the side flap 60 is opposed to the area of the outer lid piece 32 where the second oblique portion 36 c is formed, and the edge 60 a of the side flap 60 is separated from the front plate 16 closer to the tip of the side flap 60. Be placed at an angle.

  The operation of opening the top side of the packaging box 10 and taking out the product is performed as follows. First, the pressing portion 48 of the front plate 16 is pushed in with a finger to break the tearing line 46 and the finger is pulled up with the pressing portion 48 pulled up to open the inner lid piece 56 and the outer lid piece 42. At this time, since the pressing portion 48 is continuous with the outer lid piece 42 via the fold line 44 and the outer lid piece 42 is glued to the inner lid piece 56, there is no part separated from the cylindrical body 76. , Does not produce garbage. Then, when the side flaps 64 and 72 are pulled up, the end on the top surface side of the cylindrical body 76 is opened, and the goods inside can be taken out.

  When discarding the packaging box 10 after use, the bottom side is disassembled in a state where the top side of the cylindrical body 76 is open. First, the center part of the outer surface of the outer lid piece 32 is slightly pushed inward to break a part or all of the outer lid breaking line 36, and the corner of the cylindrical body 76 is pressed so as to widen the broken portion. For example, as shown in FIG. 4A, it is preferable to put a finger on the corner of the creased line 26 and the corner of the creased line 30, and to press the corners so as to be close to each other. Then, the entire outer lid breaking line 36 is surely broken, and the first outer lid folding crease 38 and the inner lid folding crease 54 extending from the corner of the breaking crease 28 are simultaneously reversely folded, and the corners of the folding crease 24 The second outer lid fold ruled line 40 extending from the portion is reversely folded.

  At this time, the side flap 68 is pushed by the corner 56 b of the inner lid piece 50 and deeply folded straight at the side creases 70, and the side flap 60 is also a part of the main portion 50 a of the inner lid piece 50 and the outer lid 32 And the sheet is deeply folded at the side creases 62. Further, since the side flap 68 is provided with the inclined edge 68a, the second side plate 18 does not prevent the operation of folding the back plate 20, and the side flap 60 is also provided with the inclined edge 60a. The first side plate 14 does not disturb the folding operation of the front plate 16. Then, as shown in FIG. 4 (b) and FIG. 5, the tubular body 76 is almost flatly folded, and the outer lid piece 32, the inner lid piece 50 and the side flaps 60, 68 are accommodated in the tubular body 76. Ru.

  In order to ensure that the operation of disassembling the bottom side is smoothly performed, in the assembled state, the main portion 32a of the outer lid piece 32 is a position where the opening of the cylindrical body 76 is divided into two in parallel with the front creased line 34 And the first outer portion 36b, the second outer portion 36c, the first outer lid fold line 38 and the second outer lid fold line 40 project obliquely from the main portion 36a at an angle of 135 degrees. Is preferred. With such a structure, not only the dismantling operation becomes smooth but also the outer cover piece 32 and the inner cover piece 50 are in the cylindrical body 76 in a state where the cylindrical body 76 is folded flat. It is housed neatly.

  As described above, the packaging box 10 can be disassembled in a very compact folded state, and the dismantling operation is easy, so disposal after use is easy.

  In addition, the packaging box of this invention is not limited to the said embodiment. For example, as for the gluing of the outer lid piece 32 and the inner lid piece 50, the distal end side portion of the outer lid piece 32 may be glued to the inner lid piece 50, and the main portion 36a of the outer lid break line 36 It is preferable that the tip end side of the two inclined portions 36 b and 36 c be glued to the inner lid piece 50. Furthermore, when the portion surrounded by the main portion 36a, the second oblique portion 36c, and the first outer lid folding crease 38 is glued to the inner lid piece 50, the inner lid piece 50 can be easily pushed in and has good operability. In addition, the structure of the outer lid piece 32 (the outer shape, the layout of the outer lid broken line 36, the layout of the first and second outer lid folding lines 38, 40, etc.) is an example, and it can be folded without any trouble by the disassembling operation described above. If possible, it may be changed to a structure different from the above. Edges 60a. The same applies to the shape of 68a.

  In addition, any of the four sides of the cylindrical body may be used as the front plate and the back plate. In the present invention, the surface on which the outer lid piece is extended through the front creases is defined as the front plate, but the front plate does not have to be the front of the display or display of the box. In addition, the size of the box, the material, the shape of each member, and the like can be appropriately changed. Also, the structure for closing the top side can be freely changed according to the application.

DESCRIPTION OF REFERENCE NUMERALS 10 packaging box 12 box forming piece 14 first side plate 16 front plate 18 second side plate 20 back plate 32 outer cover piece (bottom side)
34 Front creased line 36 Outer lid breaking line 36a Main part 36b First diagonal part 36c Second diagonal part 38 First outer lid folded creased line 40 Second outer lid folded creased line 50 Inner lid piece (bottom side)
52 Back creases 54 Inner lid creases 60, 68 Side flaps (bottom side)
60a, 68a edge 62, 70 side creased line 76 tube 78 glue

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a packaging box with an easy-to-discard function provided with a breaking line for disassembly which is used at the time of disposal .

  2. Description of the Related Art Conventionally, a seal end carton type packaging box in which a single box forming piece is three-dimensionally assembled has been used as a packaging box for storing and transporting goods for display at a storefront or the like.

  Conventionally, as disclosed in, for example, Patent Document 1, it has a front plate, a pair of side plates and a back plate that form a cylindrical body (rectangular cylindrical peripheral wall), and an inner bottom plate extends to the lower end of the back plate. The outer bottom plate is extended at the lower end of the front plate, the inner bottom flaps are respectively extended at the lower ends of the pair of side plates, and the pair of inner bottom flaps is turned over so as to close the opening of the cylindrical body. A seal end carton is disclosed in which the inner bottom flap is stacked, the outer bottom plate is stacked on the inner bottom plate and glued, and the opening of the tubular body is closed. This seal end carton has a score line for dismantling between the base ends of the outer bottom plate, and a pair of inner bottom flaps have valley fold lines extending diagonally from the corners in a portion near the base of the middle bottom plate. ing.

  When this seal end carton is discarded, it is dismantled by pressing the front plate and the back plate in the direction to approach each other with the top surface open, and then pressing the front plate and the back plate in either the left or right direction. And the insole flap can be broken along the valley fold line and dismantled into a non-bulky folded state.

JP, 2016-193760, A

  However, when the seal end carton of Patent Document 1 is disassembled and folded, the outer bottom plate, the inner bottom plate, and the inner bottom flap protrude from the lower end of the cylindrical body, so the box to be discarded becomes bulky. There has been a need for more compact, foldable and disposable packaging boxes.

  The present invention has been made in view of the above background art, and it is an object of the present invention to provide a packaging box which can be disassembled into a compact folded state by a simple operation.

  According to the present invention, the box-shaped piece is formed by connecting a front plate, a back plate and two side plates to each other via creases parallel to each other, and the front plate An outer lid piece is extended at the edge parallel to the connecting direction via a front crease, and an inner lid is extended at the edge parallel to the connecting direction at the rear plate via a rear crease. In the assembled state, the front plate, the back plate, and the two side plates form a tubular body having a rectangular cross section, and the inner lid piece falls over the open end side of the tubular body, and the outer lid A packaging box in which a piece overlaps the inner lid piece, the outer lid piece is glued to the inner lid piece, and the open end of the cylindrical body is closed, and the inside of the outer lid piece, An outer lid break line and an outer lid break line are provided, and the outer lid break line is from one end of the front crease line to one tip side angle of the diagonal of the outer lid piece And the outer lid fold line extends from the other end of the front fold line toward the other end corner of the diagonal of the outer lid piece, and the inner lid piece is internally folded with the back fold An inner lid creased line extending obliquely from one end of the creased line is provided, and in the assembled state, the tip end side portion of the outer lid piece is glued to the inner lid piece, and the outer lid folded creased line overlaps the inner lid folded crease, The outer lid piece is pushed inward to break the outer lid break line, and the corner of the cylindrical body is pushed diagonally so as to widen the broken portion of the outer lid break line. A packaging box in which the outer lid folding crease and the inner lid folding crease are bent inward, the cylindrical body is folded flat, and the outer lid piece and the inner lid piece are accommodated in the cylindrical body. It is.

  In particular, an outer lid break line and a first and second outer lid crease line are provided inside the outer lid piece, and the outer lid break line is a main part facing the front crease line at an interval. A first oblique portion which projects obliquely from one end of the main portion at an obtuse angle and reaches one end of the front crease, and protrudes obliquely at an obtuse angle from the other end of the main portion to one tip side of the outer lid piece And a second oblique portion reaching a corner, and the first outer lid folding crease obliquely projects from the one end of the main portion at an obtuse angle and extends toward the other tip corner of the outer lid. And the second outer lid creased line projects obliquely from the other end of the main portion at an obtuse angle and extends toward the other end of the front creased surface, and the inner back of the inner lid piece is the rear surface. An inner lid creased line extending diagonally from one end of the creased line is provided. Then, in the assembled state, a portion on the tip side of the main part and the first and second oblique parts of the outer lid piece is glued to the inner lid piece, and the first outer lid folded ruled line is the inner lid folded creased line , And both ends of the outer lid fracture line of the outer lid piece are placed so that the outer lid fracture line is broken by pushing the outer surface of the outer lid piece inward and the broken part of the outer lid fracture line is expanded. The first and second outer lid fold creases and the inner lid fold creases are bent inward by pushing the corners of the tubular body in the diagonal direction so that the positioned diagonals are close to each other. The body is folded flat, and the outer cover piece and the inner cover piece are accommodated in the cylindrical body.

  In the assembled state, the main portion of the outer cover piece is disposed at a position where the opening of the cylindrical body is divided into two in parallel with the front crease, and the first oblique portion, the second oblique portion, It is preferable that the first outer cover creased line and the second outer cover creased line are configured to protrude obliquely from the main portion at an angle of 135 degrees.

In the two side plates, side flaps are respectively extended via side creases at an edge parallel to the connecting direction, and in an assembled state, the two side flaps are on the open end side of the cylindrical body. And the side flaps on the side where the first oblique portion is opposed, the end edge closer to the back plate is closer to the tip of the side flap from the back plate The side flap inclined toward the second side facing the second oblique portion is inclined so as to be away from the front plate as the end edge closer to the front plate is closer to the tip of the side flap, When the tubular body is folded flat, the two side flaps may be accommodated in the tubular body.
Further, the front plate, the back plate, and the two side plates are connected via parallel creased lines, and a lid piece is extended to the front plate at an end edge parallel to the connecting direction via the front creased lines. In the assembled state, the front plate, the back plate, and the two side plates form a tubular body having a rectangular cross section, and the cover piece closes the open end of the tubular body. In the inside of the lid piece, a lid breaking line and a lid creased line are provided, and the lid fracture line extends from one end of the front creased line to one corner of the tip of the diagonal of the lid piece, The lid creased line extends from the other end of the front creased line toward the other end corner of the diagonal of the lid piece, and the outer surface of the lid piece is pushed inward to break the lid breaking line. Pushing the corner of the cylindrical body in a diagonal direction so as to widen the broken part of the lid break line By the Futaori border bent respectively inwardly, the tubular body is folded flat, or a packaging box in which the lid pieces are housed in the tubular body.

  The packaging box of the present invention can be easily operated and reduced in protrusion of flaps and the like, and can be disassembled into a compact folded state, and disposal after use is easy.

It is the expanded view which looked at the box side formation piece which forms the packaging box of one Embodiment of this invention from surface side. It is a figure which shows the assembled state of the packaging box of this embodiment, Comprising: The perspective view (a) which looked at this packaging box from the bottom side, and the perspective view (b) seen from the top side. It is an enlarged view which shows the outer cover piece and the inner cover piece which comprise the bottom face of Fig.2 (a). It is a figure (a), (b) which shows operation which disassembles the bottom face of the packaging box of this embodiment. It is a figure which shows the folded state after dismantling the packaging box of this embodiment.

  Hereinafter, an embodiment of a packaging box of the present invention will be described based on the drawings. As shown in FIGS. 2A and 2B, the packaging box 10 according to the embodiment of the present invention is a seal end in which both ends (top and bottom sides) of a rectangular cylindrical body are closed. It is a carton-type box, and is formed by assembling the box-forming piece 12 shown in FIG.

  The box-forming piece 12 is formed by punching out a single blank sheet such as thick paper, and the first side plate 14, the front plate 16, the second side plate 18, and the back plate 20 are connected in order. Furthermore, on the side of the back plate 20, a pasted piece 22 pasted to be opposite to the back side of the first side plate 14 in an assembled state is connected. The connecting direction lengths of the first side plate 14 and the second side plate 18 are short and substantially equal to each other, and the connecting direction lengths of the front plate 16 and the back plate 20 are long and substantially equal to each other. The first side plate 14, the front plate 16, the second side plate 18, the back plate 20, and the gluing piece 22 are separated by fold lines 24, 26, 28, 30 respectively.

  A substantially rectangular outer cover piece 32 is extended at an end on the bottom surface side of the front plate 16 and is separated from the front plate 16 by a front crease line 34. The extended length of the outer cover piece 32 is the same as or slightly shorter than the length in the connecting direction of the first side plate 14. Furthermore, an outer lid break line 36 and first and second outer lid fold lines 38, 40 are provided inside the outer lid piece 32.

  The outer lid breaking line 36 has a main portion 36a facing the front creased line 34 at intervals, and a first oblique portion 36b protruding obliquely from one end of the main portion 36a at an obtuse angle and reaching one end of the front creased line 34; A second oblique portion 36 c which protrudes obliquely from the other end of the main portion 36 a at an obtuse angle and reaches one end side corner portion of the outer lid piece 32. The first outer lid folding ruled line 38 protrudes obliquely at an obtuse angle from one end (one end on the first oblique portion 36b side) of the main portion 36a and extends toward the other tip corner of the outer lid 32 The outer lid creased line 40 protrudes obliquely from the other end (one end on the second oblique portion 36c side) of the main portion 36a at an obtuse angle and extends toward the other end of the front creased line 34.

  Further, an outer cover piece 42 having substantially the same outer shape as the outer cover piece 32 is extended to an end portion on the top surface side of the front plate 16 and is separated from the front plate 16 by a fold line 44.

  At the end on the top surface side of the front plate 16, a breaking line 46 for opening is provided. The tearing line 46 for opening is formed in a trapezoidal shape so that both ends thereof overlap with both ends of the creased line 44 and the central portion is in the front plate 16. A portion surrounded by the tearing line 46 for opening and the folding line 44 becomes a pressing portion 48 which is pressed when the packaging box 10 in the assembled state is opened.

  A substantially rectangular inner lid piece 50 is extended at an end on the bottom surface side of the back plate 20, and is separated from the back plate 20 by a back crease line 52. The extension length of the inner lid piece 50 is about 4/5 of the connecting direction length of the first side plate 14 and slightly shorter than the outer lid piece 32. Inside lid piece 50 is provided an inner lid folding ruled line 54 extending diagonally from one end (one end on the side of second side plate 18) of rear folding line 32, and inner lid piece 50 has a main portion 50a and a corner It is divided into 50b. An inner lid piece 56 having substantially the same outer shape as the inner lid piece 50 is extended to the end on the top surface side of the back plate 20, and is separated from the back plate 20 by a fold line 58.

  A side flap 60 is extended at the end on the bottom side of the first side plate 14, and is separated from the first side plate 14 by a side fold line 62. The extension length of the side flaps 60 is slightly shorter than half of the length in the connecting direction of the front plate 16. The edge 60 a on the outer lid 32 side of the side flap 60 is inclined so as to be away from the outer lid 32 closer to the tip of the side flap 60. A trapezoidal side flap 64 is also extended to the end on the top surface side of the first side plate 14 and is separated from the first side plate 14 by a fold line 66. The extended length of the side flaps 64 is substantially the same as the side flaps 60.

  A side flap 68 is extended at the end on the bottom side of the second side plate 18 and is separated from the second side plate 18 by a side crease 70. The extension length of the side flaps 68 is slightly shorter than half of the length in the connecting direction of the front plate 16. An end edge 68 a of the side flap 68 on the side of the inner lid piece 50 is inclined so as to be away from the inner lid piece 50 closer to the tip of the side flap 68. A trapezoidal side flap 72 is also extended to the end on the top surface side of the second side plate 18 and separated from the second side plate 18 by a fold line 74. The extended length of the side flaps 72 is substantially the same as the side flaps 68.

  Next, an example of a method of assembling the box-forming piece 12 will be described. FIG. 1 shows the box-forming piece 12 as viewed from the front side. Hereinafter, the folding method in which the front side of the box-forming piece 12 is convex is referred to as normal folding, and the folding method in which the back side is convex is referred to as reverse folding.

  First, glue is applied to the surface of the glued piece 22, the creased line 28 is folded in a straight line, and the creased line 24 is folded in a straight line, and the surface of the glued piece 22 and the back of the first side plate 14 are glued. The box forming piece 12 is shipped from the manufacturing plant of the packaging box 10 in the folded state.

  Next, in a factory or the like for storing and packaging goods, the creased lines 24, 26, 28, 30 are each folded in a 90-degree manner to form a rectangular tubular body 76. Then, the side flaps 60 and 68 on the bottom side are correctly folded at 90 degrees by the side fold lines 62 and 70 respectively, and the inner lid piece 50 is correctly folded at 90 degrees at the back fold lines 52. After applying the glue to the portion surrounded by the main portion 36a, the second oblique portion 36c and the first outer lid folding crease 38, the outer lid 32 is folded at 90 degrees with the front folding ridge 34, and the outer lid The pieces 32 are overlapped and glued to the inner lid piece 50. By this operation, the bottom end of the cylindrical body 76 is closed. After this, the product is inserted inside from the open end of the top surface side of the cylindrical body 76.

  Thereafter, the side flaps 64 and 72 on the top side are correctly folded at 90 degrees by the creased lines 66 and 74, respectively, and the inner lid piece 56 is correctly folded at 90 degrees at the folded creases 58. After the glue 78 is applied, the outer lid piece 42 is folded in a regular manner at 90 degrees with the fold line 44, and the outer lid piece 42 is overlapped and glued onto the inner lid piece 56. By this operation, the end portion on the top surface side of the cylindrical body 76 is also closed to be in the assembled state shown in FIGS. 2A and 2B, and the product packaging operation is completed.

  In addition to the above, in the order of storing the goods, the outer lid piece 42 on the top side is glued to the inner lid piece 56 and closed as described above, and the goods are stored from the bottom side, and then the bottom side May be closed as described above.

  In the assembled state, as shown in FIG. 3, the first outer cover folding line 38 of the outer cover 32 on the bottom side substantially overlaps the inner cover folding line 54 of the inner cover 50. Further, although not shown in FIG. 3, the side flaps 68 face the area of the outer lid piece 32 where the first oblique portion 36 b is formed, and the edge 68 a of the side flaps 68 is at the tip of the side flaps 68. The closer to the back plate 20, the closer it is to be disposed to be inclined. Also, the side flap 60 is opposed to the area of the outer lid piece 32 where the second oblique portion 36 c is formed, and the edge 60 a of the side flap 60 is separated from the front plate 16 closer to the tip of the side flap 60. Be placed at an angle.

  The operation of opening the top side of the packaging box 10 and taking out the product is performed as follows. First, the pressing portion 48 of the front plate 16 is pushed in with a finger to break the tearing line 46 and the finger is pulled up with the pressing portion 48 pulled up to open the inner lid piece 56 and the outer lid piece 42. At this time, since the pressing portion 48 is continuous with the outer lid piece 42 via the fold line 44 and the outer lid piece 42 is glued to the inner lid piece 56, there is no part separated from the cylindrical body 76. , Does not produce garbage. Then, when the side flaps 64 and 72 are pulled up, the end on the top surface side of the cylindrical body 76 is opened, and the goods inside can be taken out.

  When discarding the packaging box 10 after use, the bottom side is disassembled in a state in which the top side of the cylindrical body 76 is open. First, the center part of the outer surface of the outer lid piece 32 is slightly pushed inward to break a part or all of the outer lid breaking line 36, and the corner of the cylindrical body 76 is pressed so as to widen the broken portion. For example, as shown in FIG. 4A, it is preferable to put a finger on the corner of the creased line 26 and the corner of the creased line 30, and to press the corners so as to be close to each other. Then, the entire outer lid breaking line 36 is surely broken, and the first outer lid folding crease 38 and the inner lid folding crease 54 extending from the corner of the breaking crease 28 are simultaneously reversely folded, and the corners of the folding crease 24 The second outer lid fold ruled line 40 extending from the portion is reversely folded.

  At this time, the side flap 68 is pushed by the corner 56 b of the inner lid piece 50 and deeply folded straight at the side creases 70, and the side flap 60 is also a part of the main portion 50 a of the inner lid piece 50 and the outer lid 32 And the sheet is deeply folded at the side creases 62. Further, since the side flap 68 is provided with the inclined edge 68a, the second side plate 18 does not prevent the operation of folding the back plate 20, and the side flap 60 is also provided with the inclined edge 60a. The first side plate 14 does not disturb the folding operation of the front plate 16. Then, as shown in FIG. 4 (b) and FIG. 5, the tubular body 76 is almost flatly folded, and the outer lid piece 32, the inner lid piece 50 and the side flaps 60, 68 are accommodated in the tubular body 76. Ru.

  In order to ensure that the operation of disassembling the bottom side is smoothly performed, in the assembled state, the main portion 32a of the outer lid piece 32 is a position where the opening of the cylindrical body 76 is divided into two in parallel with the front creased line 34 And the first outer portion 36b, the second outer portion 36c, the first outer lid fold line 38 and the second outer lid fold line 40 project obliquely from the main portion 36a at an angle of 135 degrees. Is preferred. With such a structure, not only the dismantling operation becomes smooth but also the outer cover piece 32 and the inner cover piece 50 are in the cylindrical body 76 in a state where the cylindrical body 76 is folded flat. It is housed neatly.

  As described above, the packaging box 10 can be disassembled in a very compact folded state, and the dismantling operation is easy, so disposal after use is easy.

  In addition, the packaging box of this invention is not limited to the said embodiment. For example, as for the gluing of the outer lid piece 32 and the inner lid piece 50, the distal end side portion of the outer lid piece 32 may be glued to the inner lid piece 50, and the main portion 36a of the outer lid break line 36 It is preferable that the tip end side of the two inclined portions 36 b and 36 c be glued to the inner lid piece 50. Furthermore, when the portion surrounded by the main portion 36a, the second oblique portion 36c, and the first outer lid folding crease 38 is glued to the inner lid piece 50, the inner lid piece 50 can be easily pushed in and has good operability. In addition, the structure of the outer lid piece 32 (the outer shape, the layout of the outer lid broken line 36, the layout of the first and second outer lid folding lines 38, 40, etc.) is an example, and it can be folded without any trouble by the disassembling operation described above. If possible, it may be changed to a structure different from the above. Edges 60a. The same applies to the shape of 68a.

  In addition, any of the four sides of the cylindrical body may be used as the front plate and the back plate. In the present invention, the surface on which the outer lid piece is extended through the front creases is defined as the front plate, but the front plate does not have to be the front of the display or display of the box. In addition, the size of the box, the material, the shape of each member, and the like can be appropriately changed. Also, the structure for closing the top side can be freely changed according to the application.

DESCRIPTION OF REFERENCE NUMERALS 10 packaging box 12 box forming piece 14 first side plate 16 front plate 18 second side plate 20 back plate 32 outer cover piece (bottom side)
34 Front creased line 36 Outer lid breaking line 36a Main part 36b First diagonal part 36c Second diagonal part 38 First outer lid folded creased line 40 Second outer lid folded creased line 50 Inner lid piece (bottom side)
52 Back creases 54 Inner lid creases 60, 68 Side flaps (bottom side)
60a, 68a edge 62, 70 side creased line 76 tube 78 glue

Claims (4)

A front plate, a back plate, and two side plates are connected via parallel creases, and an outer cover piece is extended to the front plate at an edge parallel to the connecting direction via the front creases. An inner lid piece is extended to the back plate at an edge parallel to the connecting direction via a back crease.
In the assembled state, a tubular body having a rectangular cross section is formed by the front plate, the back plate, and the two side plates, the inner lid piece falls on the open end side of the cylindrical body, and the outer lid piece is In the packaging box which is overlapped with the inner lid piece, the outer lid piece is glued to the inner lid piece, and the open end of the cylindrical body is closed,
An outer lid break line and an outer lid broken line are provided on the inner side of the outer lid piece, and the outer lid broken line is from one end of the front creased line to one end side corner portion of the diagonal of the outer lid piece , And the outer cover creased line extends from the other end of the front creased line toward the other corner of the diagonal of the outer cover piece,
An inner lid creased line is provided on the inner side of the inner lid piece, which obliquely extends from one end of the rear curved edge,
In the assembled state, the tip end side portion of the outer lid piece is glued to the inner lid piece, and the outer lid fold line overlaps the inner lid fold line,
The outer lid piece is pushed inward to break the outer lid break line, and the corner of the cylindrical body is pushed diagonally so as to widen the broken portion of the outer lid break line. The outer lid folding ruled line and the inner lid folding ruled line respectively bend inward, the tubular body is flatly folded, and the outer lid piece and the inner lid piece are accommodated in the tubular body. Packaging box to be. The outer lid breaking line and the first and second outer lid folding lines are provided on the inner side of the outer lid piece, and the outer lid breaking lines are a main part facing the front folding line at an interval. A first oblique portion which projects obliquely from one end of the main portion at an obtuse angle and reaches one end of the front creased line, and protrudes obliquely at an obtuse angle from the other end of the main portion; And the first outer cover folding line extends obliquely toward the other tip corner of the outer cover piece at an obtuse angle from the one end of the main part. The second outer lid creased line obliquely projects at an obtuse angle from the other end of the main portion and extends toward the other end of the front creased line.
In the assembled state, the outer lid piece is glued to the inner lid piece at the tip end side of the main portion and the first and second oblique portions, and the first outer lid fold crease overlaps the inner lid fold crease ,
The outer lid piece is pushed inward to break the outer lid break line, and the pair of outer lid pieces on which both ends of the outer lid break line are positioned so as to widen the broken part of the outer lid break line The first and second outer lid folding creases and the inner lid folding crease are bent inward by pushing the corners of the cylindrical body in a diagonal direction so that the corners are close to each other, and the cylindrical body is folded. The packaging box according to claim 1, wherein the outer cover piece and the inner cover piece are accommodated in the cylindrical body and folded flat.   In the assembled state, the main portion of the outer cover piece is disposed at a position that divides the opening of the cylindrical body into two in parallel with the front crease, and the first oblique portion, the second oblique portion, and the second oblique portion The packaging box according to claim 2, wherein the outer lid folding crease and the second outer lid folding crease obliquely project at an angle of 135 degrees from the main portion. In the two side plates, side flaps are respectively extended via side creases at an edge parallel to the connecting direction,
In the assembled state, the two side flaps fall to the open end side of the cylindrical body and overlap with the inner surface of the inner lid piece, and the side flaps of the opposite side of the first oblique portion to the back plate The edge on the near side is inclined away from the back plate closer to the tip of the side flap, and the edge on the side closer to the front plate of the side flap on which the second oblique portion is opposite is , Incline closer to the tip of the side flap and away from the front plate,
The packaging box according to any one of claims 1 to 3, wherein the two side flaps are accommodated in the cylindrical body when the cylindrical body is folded flat.

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