JP5571590B2 - Cardboard box - Google Patents

Description

The present invention relates to a corrugated cardboard box, and in particular, the contents may be damaged when the leading edge butting portion between outer flaps is sealed with an adhesive tape (gum tape, etc.) or when the adhesive tape is cut with a cutter or the like in the assembled state of the box. It is a technique to prevent it.

In the conventional cardboard box, a rectangular cylindrical body is formed by four body walls including a first body wall, a second body wall, a third body wall, and a fourth body wall. An upper inner flap and a lower inner flap are connected to the upper and lower edges of the first and third trunk wall portions, and the upper and lower edges of the second and fourth trunk wall portions are connected to each other. The upper outer flap and the lower outer flap are connected to each other (see Patent Document 1).

In this case, a gap is formed between the leading edges of the upper inner flaps and between the leading edges of the lower inner flaps in the box assembly state, and the upper outer flap and the lower outer flap are respectively the upper inner flap and the lower inner flap. It is formed so that the front-end edge may be faced | matched while it overlaps with the outer side.

Then, the contents are accommodated in the box in the box assembly state, the upper inner flap is closed, the upper outer flap is closed outside thereof, and the leading edge butting portion between the upper outer flaps is sealed from the adhesive tape to corrugate the cardboard. Can be packaged in a box.

JP-A-11-263333

However, the conventional cardboard box has a gap formed between the front end edges of the upper inner flaps. Therefore, when packaging, the front outer end flap is closed and the front end edge butting portion is sealed with the adhesive tape. If the edge butt portion is open, the adhesive tape may adhere to the contents through the gap between the front end edges of the upper inner flaps, and the contents may be soiled or damaged.

Also, when opening, when cutting the adhesive tape by running the cutter at the leading edge butt of the upper outer flaps, the cutter blade edge will not contact the contents through the gap between the leading inner edges of the upper inner flaps. , The contents may be cut or damaged.

As countermeasures against damage to the contents by such an adhesive tape or cutter, there is one in which cardboard paper pieces, cardboard pieces, thin kraft paper pieces, etc. are laid so as to close the gap between the front end edges of the upper inner flaps. When a cardboard paper piece or a cardboard piece is used, a large amount of paper resources is consumed, and there is a problem that it takes time and labor to prepare a cardboard paper piece or a cardboard piece.

The present invention was made as a countermeasure against damage to the contents by the adhesive tape or cutter as described above, and an underlay piece was formed on the upper inner flap, and this underlay piece was folded and the gap between the tip edges of the upper inner flaps was formed. By sealing the cardboard, it is possible to prevent damage to the contents due to adhesive tape or cutter, and the underlay piece is formed by a part of the upper inner flap itself, so that cardboard paper pieces, cardboard pieces, thin kraft paper pieces, etc. are prepared separately It is an object to provide a corrugated cardboard box which is not necessary and can save paper resources and can be laid with simple labor.

In order to solve the above problems, the present invention is configured as follows.
That is, the cardboard box according to claim 1 of the present invention is
A rectangular tubular body formed by the first body wall part (1) and the third body wall part (3) facing each other, and the second body wall part (2) and the fourth body wall part (4) facing each other. (5) and
Upper outer flaps (14), (34) and lower outer flaps (12), (32) connected to the upper and lower edges of the first and third trunk wall portions (1), (3). When,
Upper inner flaps (24) and (44) and lower inner flaps (22) and (42) connected to the upper and lower edges of the second and fourth trunk wall portions (2) and (4). And comprising
A gap (S) is formed between the front end edges of the upper inner flaps (24), (44) in the box assembly state,
In the cardboard box formed so that the upper outer flaps (14), (34) overlap the outer sides of the upper inner flaps (24), (44) and their leading edges are butted together in a box assembly state,
Underlay pieces (26), (46) are formed on a part of the upper inner flaps (24), (44),
The underlay pieces (26), (46) are formed by cutting lines (27), (47) cut into the flaps from the side edges of the upper inner flaps (24), (44), and the upper inner flaps (24). The fold line is formed by being surrounded by fold lines (28) and (48) formed in substantially the same direction from the leading edge of (44) to the back end of the cut lines (27) and (47). (28), (48) is formed so as to be folded out from the leading edge of the upper inner flaps (24), (44) by bending, and the underlay pieces (26), (46) are The gap between the front end edges of the upper inner flaps (24), (44) at a position overlapping the front end edge butting portion (9) between the upper outer flaps (14), (34) so as to overlap each other in the box assembly state ( S) Shaped so that it can be folded completely It is.

The cardboard box according to claim 2 of the present invention is the cardboard box according to claim 1,
The cut lines (27) and (47) are formed by leaving uncut portions between the underlay pieces (26) and (46) and the upper inner flaps (24) and (44) .

The corrugated cardboard box of the present invention forms an underlay piece on a part of the upper inner flap, and the underlay piece is positioned between the front edge of the upper inner flaps at a position where it overlaps the front edge butt of the upper outer flaps in the box assembly state. The structure is characterized by being formed so as to be folded so as to completely close the gap.

Therefore, when packaging, the necessary contents are accommodated inside the rectangular cylindrical body, and then the upper inner flaps are folded inward, then the upper outer flaps are folded inward and the leading edges thereof are butted together. become.
At this time, if the underlay piece is folded from the upper inner flap, the gap between the front end edges of the upper inner flaps can be completely blocked by the underlay piece at a position overlapping the front end edge abutting portion between the upper outer flaps.

As described above, the gap between the top edge of the upper inner flaps can be completely blocked by the underlay piece at the position where it overlaps the leading edge butting portion of the upper outer flaps, so that damage to the contents by the adhesive tape or cutter can be prevented. Can be prevented.
In addition, since the underlay piece is formed by a part of the upper inner flap itself, it is not necessary to prepare a cardboard paper piece, a cardboard piece, a thin kraft paper piece, etc. separately, thereby saving paper resources and making it easy. An underlay piece can be laid.

The perspective view which shows the cardboard box of the state which opened the upper inner flap and the upper outer flap. The perspective view which shows the cardboard box of the state which closed the upper inner flap and opened the upper outer flap. The perspective view which shows the packaged cardboard box. A developed view of a cardboard box. The top view which shows the cardboard box of the state which opened the upper inner flap and the upper outer flap. The top view which shows the cardboard box of the state which closed the upper inner flap and opened the upper outer flap. The top view which shows the packaged cardboard box.

As shown in FIG. 4, the corrugated cardboard box of the present embodiment includes a first trunk wall part 1, a second trunk wall part 2, a third trunk wall part 3, and a fourth trunk wall part 4, and each trunk wall part 1. 2, 3, 4 are integrally connected via folding lines 20, 30, 40.
A glue margin piece 11 is integrally connected to a side end of the first body wall portion 1 via a fold line 10, and is folded from the fold lines 10, 20, 30, 40, and the glue margin piece 11 is a fourth one. By joining to the side end of the body wall part 4, the first body wall part 1 and the third body wall part 3 face each other, and the second body wall part 2 and the fourth body wall part 4 face each other. The part 5 can be formed.

In the embodiment, the lateral width L1 of the first trunk wall portion 1 and the third trunk wall portion 3 is formed to be wider than the lateral width L2 of the second trunk wall portion 4 and the fourth trunk wall portion 4 so as to be rectangular in plan view. A square cylindrical body 5 is formed.

Lower outer flaps 12 and 32 are integrally connected to lower edges of the first and third trunk wall portions 1 and 3 via folding lines 13 and 33, respectively, and upper outer flaps 14 are respectively connected to upper edges. , 34 are connected together via folding lines 15 and 35.
Lower inner flaps 22 and 42 are integrally connected to lower edges of the second trunk wall portion 2 and the fourth trunk wall portion 4 via folding lines 23 and 43, respectively, and upper inner flaps 24 are respectively connected to upper edges. , 44 are integrally connected via folding lines 25, 45.

A height H1 of the lower outer flaps 12, 32 and the upper outer flaps 14, 34 is formed to be half (1/2) of a lateral width L2 of the second trunk wall part 2 and the fourth trunk wall part 4, and the lower The height H2 of the side inner flaps 22, 42 and the upper inner flaps 24, 44 is formed to be the same as the height H1 of the lower outer flaps 12, 32 and the upper outer flaps 14, 34.

Accordingly, when the lower inner flaps 22 and 42 and the upper inner flaps 24 and 44 are folded inward, a gap is formed between the leading edges of the lower inner flaps 22 and 42 and between the leading edges of the upper inner flaps 24 and 44. S is formed.
On the other hand, when the lower outer flaps 12, 32 and the upper outer flaps 14, 34 are folded inward, the lower outer flaps 12, 32 and the upper outer flaps 14, 34 are respectively connected to the lower inner flaps 22, 42 and the upper side. It overlaps with the outer side of the inner flaps 24 and 44, and the front-end edges are abutted.

The rectangular cylindrical body 5 may be formed in a square shape in plan view. In this case, the height H2 of the lower inner flaps 22 and 42 and the upper inner flaps 24 and 44 is the lower outer flap 12. , 32 and the upper outer flaps 14, 34 are formed lower than the height H1, and the present invention can be applied to the gaps S formed between the front edges.

The upper inner flaps 24 and 44 are respectively formed with underlay pieces 26 and 46.
The underlay pieces 26 and 46 are folded so as to completely close the gap S between the front end edges of the upper inner flaps 24 and 44 at a position overlapping the front end butting portion 9 between the upper outer flaps 14 and 34 in the assembled state. It is formed to be.

The underlay pieces 26, 46 of the embodiment are cut lines 27, 47 cut into the flaps from the side edges of the upper inner flaps 24, 44, and the cut lines 27, 47 from the tip edges of the upper inner flaps 24, 44. It is formed by being surrounded by folding lines 28 and 48 formed up to the back end.
And it folds in the state which protrudes from the front-end edge of the upper inner flaps 24 and 44 by bend | folding from the said fold lines 28 and 48, and the underlay pieces 26 and 46 are formed so that it may mutually overlap.
In this case, the folding pieces 26 and 46 may be bent so as to overlap the upper surfaces of the upper inner flaps 24 and 44, or may be bent so as to overlap the back surfaces of the upper inner flaps 24 and 44.

The incision lines 27 and 47 are formed so as to completely cut the upper inner flaps 24 and 44 in the thickness direction, but some uncut portions are formed on the side edge portions of the upper inner flaps 24 and 44. It is possible to prevent the underlay pieces 26 and 46 from being bent during the manufacturing process by being left or formed by a perforation line or the like, and such a thing is also included in the score line of the present invention.

The folding lines 28 and 48 may be formed by cutting the upper inner flaps 24 and 44 about half in the thickness direction so as to be easily bent, or may be formed by perforation lines or the like. Things can be used.

In addition, although the embodiment is an example in which the underlay pieces 26 and 46 are formed on the upper inner flaps 24 and 44, the same underlay piece may be formed on the lower inner flaps 22 and 42.

Therefore, when packaging a cardboard box, the first barrel wall portion 1, the second barrel wall portion 2, the third barrel wall portion 3, and the fourth barrel wall portion 4 are formed with a rectangular cylindrical barrel portion 5, and the lower side. The bottom surface of the rectangular cylindrical body 5 is closed with the inner flaps 22 and 42 and the lower outer flaps 12 and 32, and the adhesive tape 60 is pasted on the leading edge butt portion between the lower outer flaps 12 and 32 so that the upper surface is covered. Form in an open box.

Next, after the necessary contents are accommodated inside the rectangular cylindrical body 5, the upper inner flaps 24, 44 are folded inward, the upper outer flaps 14, 34 are folded inward, and the leading edge thereof is folded. At the end, the adhesive tape 61 is pasted and sealed at the end edge abutting portion 9 between the upper outer flaps 14 and 34.
At this time, when the upper inner flaps 24, 44 are folded inward, the underlay pieces 26, 46 are folded in advance or after being folded, and the upper outer flap 14, The gap S between the front end edges of the upper inner flaps 24, 44 can be completely blocked at a position overlapping the front end edge butting portions 9 between the 34.
For this reason, the both ends of the tip edge butting portion 9 between the upper outer flaps 14, 34 are closed by the upper inner flaps 24, 44, and the gap S between the tip edges is closed by the lower covering pieces 26, 46. Can be removed.
In particular, since both the underlay pieces 26 and 46 overlap each other, the gap S between the end edges can be completely blocked.

As described above, the leading edge butting portion 9 between the upper outer flaps 14 and 34 is in a state of being covered with the upper inner flaps 24 and 44 and the underlay pieces 26 and 46 over the entire length thereof. And damage to the contents by the cutter and the underlay pieces 26 and 46 are formed by a part of the upper inner flaps 24 and 44 itself, so that a cardboard paper piece, a cardboard piece and a thin kraft paper piece are separately provided. It is possible to save paper resources and to lay an underlay piece with a simple effort.

DESCRIPTION OF SYMBOLS 1 1st trunk wall part 12 Lower outer flap 14 Upper outer flap 2 Second trunk wall part 22 Lower inner flap 24 Upper inner flap 26 Lower lay piece 27 Cut line 28 Folding line 3 Third trunk wall part 32 Lower outer flap 34 Upper outer flap 4 Fourth barrel wall portion 42 Lower inner flap 44 Upper inner flap 46 Underlay piece 47 Cutting line 48 Folding line 5 Square cylindrical trunk portion 9 Edge edge butting portion S Gap

Claims (2)

A rectangular tubular body formed by the first body wall part (1) and the third body wall part (3) facing each other, and the second body wall part (2) and the fourth body wall part (4) facing each other. (5) and
Upper outer flaps (14), (34) and lower outer flaps (12), (32) connected to the upper and lower edges of the first and third trunk wall portions (1), (3). When,
Upper inner flaps (24) and (44) and lower inner flaps (22) and (42) connected to the upper and lower edges of the second and fourth trunk wall portions (2) and (4). And comprising
A gap (S) is formed between the front end edges of the upper inner flaps (24), (44) in the box assembly state,
In the cardboard box formed so that the upper outer flaps (14), (34) overlap the outer sides of the upper inner flaps (24), (44) and their leading edges are butted together in a box assembly state,
Underlay pieces (26), (46) are formed on a part of the upper inner flaps (24), (44),
The underlay pieces (26), (46) are formed by cutting lines (27), (47) cut into the flaps from the side edges of the upper inner flaps (24), (44), and the upper inner flaps (24). The fold line is formed by being surrounded by fold lines (28) and (48) formed in substantially the same direction from the leading edge of (44) to the back end of the cut lines (27) and (47). (28), (48) is formed so as to be folded out from the leading edge of the upper inner flaps (24), (44) by bending, and the underlay pieces (26), (46) are The gap between the front end edges of the upper inner flaps (24), (44) at a position overlapping the front end edge butting portion (9) between the upper outer flaps (14), (34) so as to overlap each other in the box assembly state ( S) Shaped so that it can be folded completely Cardboard box, characterized in that it is. The cardboard box according to claim 1,
The cut lines (27) and (47) are formed by leaving uncut portions of the underlay pieces (26) and (46) and the upper inner flaps (24) and (44). Cardboard box.

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