JP7284057B2 - carton - Google Patents

Description

The present invention relates to cartons.

Conventionally, it is known that a carton is opened by a tear line formed in the carton (see, for example, Patent Document 1).

The carton described in Patent Document 1 includes a top plate (main surface portion), a seal end type main flap (side portion) connected to the top plate, and a zipper (tear band) provided on the seal end type main flap. ing. The zipper has multiple cuts (tear lines on the main surface side) provided on the boundary line between the top panel and the seal end type main flap, and multiple cuts (tear line on the side surface side) provided on the seal end type main flap. is formed with When opening the carton, the zipper is cut along the notch by pulling the zipper back.

JP-A-9-124033

However, in the conventional carton as described above, as shown in FIG. A cut SC closest to the tear initiation side of the side tear line SL is provided apart from the edge ED of the side portion SS. Therefore, even if the tear band is pulled at the time of opening, as shown in FIG. 7, the tear line SL on the side surface portion is not cut, only the tear line ML on the main surface portion is cut, and the side surface portion SS is separated from the carton. It may get lost.

SUMMARY OF THE INVENTION An object of the present invention is to provide a carton that can prevent the side portion from being cut off when the carton is opened.

The carton of the present invention comprises a cylindrical body portion having a pair of main surface portions arranged opposite to each other, an axial end portion of the body portion being connected to one main surface portion, and an inner side surface portion that covers the main surface portion, an outer side surface portion that is connected to the other main surface portion at an end portion in the axial direction of the body portion and is arranged to overlap the inner side surface portion from the outside, the other main surface portion and the A main surface side tear line having a plurality of rows of cuts on a boundary line with the outer side surface, and a plurality of rows of cuts formed on the outer side surface, forming a tear band together with the main surface side tear line. a side tear line, the main surface side tear line includes a first main surface side first cut located on the tear start side of the main surface side tear line, and the side surface side tear line is the side surface The side surface portion side first cut is located on the tear initiation side of the portion side tear line, and the main surface portion side first cut is provided away from the edge of the outer side surface portion on the tear initiation side, The side surface portion side first cut is characterized in that it is connected to the edge of the outer side surface portion on the tear initiation side.

According to the present invention, the first main-surface-side cut located on the tear-starting side of the main-surface-side tear line is provided away from the edge of the outer side surface portion on the tear-starting side, and at the side-surface-side tear line The side surface portion side first cut located closest to the tear initiation side is connected to the edge of the outer side surface portion on the tear initiation side. Therefore, when the tear strip is pulled, the tear line on the side surface can be cut before the tear line on the main surface. can be prevented from being separated from the carton.

In the carton of the present invention, the main surface portion side first cut is a straight portion extending on the boundary line and a direction inclined from the straight portion toward the edge of the outer side surface portion on the tear start side. preferably an extending guide.

Stress tends to concentrate at the point where the boundary line between the main surface portion and the outer side surface portion intersects the edge of the outer side surface portion on the tear initiation side, so if the distance between the intersection and the first cut on the main surface portion side is narrow, , the tear line on the main surface side is easily cut.
According to the present invention, the main-surface-side first cut includes a guide portion extending in an inclined direction from the linear portion extending on the boundary line toward the edge of the outer side surface portion on the tear initiation side. Therefore, it is possible to bring the main surface side first cut closer to the edge of the outer side surface portion while ensuring the interval of the main surface side first cut with respect to the intersection of the boundary line and the edge of the outer side surface portion. Therefore, it is possible to ensure ease of cutting the main surface side tear line while preventing the main surface side tear line from being cut earlier than the side surface side tear line.

In the carton of the present invention, the first cut on the main surface side is a linear shape extending on the boundary line, starting from a position spaced from the edge of the tear start side of the outer side surface portion on the boundary line. It is preferable that

According to the present invention, the main surface portion side first cut has a linear shape starting from a position spaced apart from the edge of the outer side surface portion on the boundary line between the main surface portion and the outer side surface portion. It is possible to prevent the side part from being cut off from the carton when the carton is opened, while the first cut has a simple shape.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the carton which concerns on 1st Embodiment of this invention. FIG. 2 is an exploded view of the carton of FIG. 1; FIG. 3 is a partially enlarged view of FIG. 2; The development view of the carton which concerns on 2nd Embodiment of this invention. FIG. 5 is a partially enlarged view of FIG. 4; An exploded view of a conventional carton. 1 is a perspective view of a conventional carton; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below based on the drawings.
In the following description, directions are based on the state in which the carton 1 is placed as shown in FIG. Further, the width direction is a direction perpendicular to the facing direction of the first principal surface portion 2 as one principal surface portion and the second principal surface portion 3 as the other principal surface portion in each side surface portion of the carton 1 .

[First embodiment]
FIG. 1 is a perspective view showing a carton 1 according to this embodiment. FIG. 2 is a development view of the carton 1 (a plan view of the carton-forming panel (also called carton blank) 1A).
In FIG. 1, the carton 1 has inner third side faces 7A and 7B as inner side faces and outer third side faces 8A and 8B as outer side faces at the axial ends of a cylindrical body portion 1B. It is a box that is closed by folding the box, and can accommodate foods such as cheese and butter inside. The carton 1 is assembled from carton-forming panels 1A made of paperboard material, as shown in FIG.

1 and 2, the carton 1 includes a first main surface portion 2, a second main surface portion 3, an inner first side surface portion 4 (see FIG. 2), an outer first side surface portion 5, a second side surface portion 6, an inner side It has three lateral sides 7A, 7B, outer third lateral sides 8A, 8B, a main side tear line 9A, and a lateral side tear line 9B.
The trunk portion 1</b>B is composed of a first main surface portion 2 , a second main surface portion 3 , an inner first side surface portion 4 , an outer first side surface portion 5 and a second side surface portion 6 .

The first principal surface portion 2 is formed in a substantially rectangular shape in plan view. The first main surface portion 2 is connected to the inner first side surface portion 4 via a lateral fold line 21, to the second side surface portion 6 via a lateral fold line 22, and to the inner third side portions 7A and 7B via a lateral fold line 23, respectively. are connected.

The second main surface portion 3 is formed in a substantially rectangular shape in a plan view, and is arranged to face the first main surface portion 2 . The second main surface portion 3 is connected to the outer first side surface portion 5 via a horizontal fold line 31, is connected to the second side surface portion 6 via a horizontal fold line 32, and is connected to the outer third side surface portion 8A via a horizontal fold line 33. , 8B.

The first inner side surface portion 4 and the first outer side surface portion 5 are side portions on one long side of the carton 1 and are arranged to overlap each other.
The outer first side surface portion 5 is arranged to overlap the inner first side surface portion 4 from the outside. The first outer side portion 5 includes flaps 51 and 52 (see FIG. 2).
The flap 51 is provided at one widthwise end of the outer first side surface 5, and the flap 52 is provided at the other widthwise end of the outer first side surface 5, both of which extend in the width direction. .

The second side portion 6 is a side portion on the other long side of the carton 1 and is arranged to face the inner first side portion 4 . The second side portion 6 includes flaps 61 and 62 (see FIG. 2).
The flap 61 is provided at one widthwise end of the second side surface portion 6 and extends in the widthwise direction.
The flap 62 is provided at the other widthwise end of the second side surface portion 6 and extends in the widthwise direction. The flap 62 is provided with a notch portion 62A on the first main surface portion 2 side.

The inner third side faces 7A, 7B and the outer third side faces 8A, 8B are side faces on the short side of the carton 1, and the inner third side face 7A and the outer third side face 8A are formed on one of the short sides. are arranged, and an inner third side surface portion 7B and an outer third side surface portion 8B are arranged on the other short side. In addition, since the inner third side surface portions 7A and 7B are formed in line symmetry with each other and have the same configuration, the inner third side surface portion 7A will be described, and the description of the inner third side surface portion 7B will be omitted. Further, the outer third side surface portions 8A and 8B are formed axisymmetrically with each other and have the same configuration. Therefore, the outer third side surface portion 8A will be described, and the description of the outer third side surface portion 8B will be omitted.

The inner third side surface portion 7A is connected to the first main surface portion 2 at the end portion in the axial direction of the body portion 1B and covers the end portion of the body portion 1B. The inner third side surface 7A has a flap 71 and a notch 72 (see FIG. 2).
The flap 71 is provided on the side opposite to the first main surface portion 2 of the inner third side surface portion 7A.
The notch 72 is provided at one end in the width direction of the inner third side surface 7A.

The outer third side surface portion 8A is connected to the second main surface portion 3 at the axial end portion of the body portion 1B, and has corner portions connected to the second main surface portion 3 and the outer first side surface portion 5. It is arranged so as to be superimposed on the three-side portion 7A from the outside. The outer third side surface 8A has a tear band 81, a notch 82 and an edge 83. As shown in FIG.

The tear band 81 is formed of a portion of the outer third side surface portion 8A and is provided along the horizontal fold line 33 that is the boundary line with the second main surface portion 3 . The tear strip 81 has tabs 81A.
The tab 81A is provided at the end of the tear band 81 on the tear initiation side, and has a shape projecting from the end to the side opposite to the second main surface 3 (toward the first main surface 2).

The notch portion 82 is provided at an end portion on the side of the tab 81A in the width direction of the outer third side surface portion 8A, and has a shape in which the end portion is notched along the tab 81A.

The edge 83 is the edge of the outer third side surface portion 8A on the tear start side, and extends from the intersection point P1 of the second main surface portion 3, the outer first side surface portion 5, and the outer third side surface portion 8A to the first main surface portion 2. It is extended towards The edge 83 of the outer third side surface portion 8B extends from the intersection point P2 of the second main surface portion 3, the second side surface portion 6, and the outer third side surface portion 8B toward the first main surface portion 2. .

The main surface side tear line 9A includes a first cut 91 as a main surface side first cut and a plurality of second main surface side cuts 92 as a plurality of main surface side second cuts. The second cuts 92 form a row in order.

The side tear line 9B is provided on the outer third side surfaces 8A, 8B and constitutes a tear band 81 together with the main surface side tear line 9A. The side tear line 9B includes a third cut 93 as a side first cut, a fourth cut 94 as a side side second cut, and a plurality of side side third cuts 95 as fifth cuts. A third cut 93, a fourth cut 94, and a fifth cut 95 are arranged in order on the outer third side surface portions 8A and 8B.

In FIG. 3, the first cut 91 is located on the tear initiation side of the main surface side tear line 9A and is spaced apart from the edge 83 of the outer third side surface 8A, 8B on the tear initiation side. The first cut 91 has a linear portion 91A and a guiding portion 91B.
The straight portion 91A extends on the lateral fold line 33 .
The guiding portion 91B includes a first guiding portion 91C and a second guiding portion 91D, and extends from the straight portion 91A in an inclined direction toward the edges 83 of the outer third side surfaces 8A and 8B. It is preferable that the angle θ1 formed by the guide portion 91B with respect to the extension of the straight portion 91A, that is, with respect to the horizontal polygonal line 33 is greater than 0 degrees and less than 45 degrees. The angle θ1 is defined by a straight line L connecting both ends of the guide portion 91B and the lateral fold line 33 (an extension of the straight portion 91A).
The first guide portion 91C has a curved line shape that protrudes toward the lateral fold line 33, and extends from the straight portion 91A toward the side tear line 9B on the tear start side of the straight portion 91A.
The second guide portion 91D has a curved line shape that protrudes toward the side tear line 9B and extends from the first guide portion 91C to the edges 83 of the outer third side portions 8A and 8B.

The second cut 92 is arranged along the main surface side tear line 9A from the edge 83 on the tear start side of the outer third side surfaces 8A, 8B to the first cut 91 . The second cut 92 has a straight portion 92A and an inclined portion 92B.
The straight portion 92A is provided parallel to the lateral fold line 33 and extends on the extension line of the straight portion 91A of the first cut 91 .
The inclined portion 92B is inclined from the straight portion 92A toward the side tear line 9B on the tear start side of the straight portion 92A.

The third cut 93 is positioned closest to the tear initiation side of the side tear line 9B and is connected to the edge 83 of the outer third side surface 8A, 8B on the tear initiation side. The third cut 93 has an introduction portion 93A and an inclined portion 93B.
The lead-in portion 93A extends parallel to the lateral fold line 33 from the edge 83 of the outer third side surface portion 8A, 8B.
The inclined portion 93B is inclined from the introduction portion 93A toward the main surface portion side tear line 9A. The angle θ2 formed by the inclined portion 93B with respect to the extension line of the introduction portion 93A may be the same as the angle θ1 of the guide portion 91B with respect to the lateral fold line 33, or may be different.

The fourth cut 94 is arranged along the side tear line 9B from the edge 83 of the outer third side 8A, 8B to the third cut 93 . The fourth cut 94 has a straight portion 94A and an inclined portion 94B.
The straight portion 94A extends parallel to the lateral fold line 33 .
The inclined portion 94B is inclined from the straight portion 94A toward the third cut 93 on the tear start side of the straight portion 94A and extends on an extension of the third cut 93 from the inclined portion 93B.

The fifth cut 95 is arranged along the side tear line 9B from the edge 83 of the outer third side 8A, 8B to the fourth cut 94. As shown in FIG. The fifth cut 95 has a straight portion 95A and an inclined portion 95B.
The straight portion 95A is provided parallel to the lateral fold line 33 and extends on the extension line of the straight portion 94A of the fourth cut 94 .
The inclined portion 95B is inclined from the straight portion 95A toward the main surface side tear line 9A on the tear start side.

The opening of the carton 1 will be described.
In FIG. 1, when opening the carton 1, the tab 81A of the tear band 81 is grasped and pulled so that the tear band 81 is folded back. At this time, the intersection points P1 and P2 at which the horizontal fold lines 33, which are the boundaries between the second main surface portion 3 and the outer third side surface portions 8A, 8B, intersect the edges 83 of the outer third side surface portions 8A, 8B. Stress concentrates in the vicinity. Therefore, when the first cut 91 is connected to the edge 83 of the outer third side surface portions 8A, 8B, the cutting of the main surface portion side tear line 9A is started before the side surface portion side tear line 9B, and the outer side tear line 9B is cut. There is a possibility that the third side parts 8A, 8B will be separated from the carton 1. In this case, if important information such as the expiration date, raw materials, and precautions for handling is written on the third outer side portions 8A and 8B, it will be impossible to confirm this information later. Therefore, by providing the first cut 91 away from the edge 83 of the outer third side surface portions 8A, 8B, cutting of the main surface portion side tear line 9A is prevented from being started immediately.

On the other hand, since the third cut 93 of the side tear line 9B is connected to the edge 83 of the outer third side 8A, 8B, when the tear strip 81 is pulled, the third cut 93 Cutting of the tear line 9B on the side portion side is promptly started. Therefore, cutting of the side tear line 9B is started before the cutting of the main surface side tear line 9A is started, and as shown by the two-dot chain line in FIG. It is reliably cut along the line 9A and the side tear line 9B. Therefore, it is possible to prevent the outer third side portions 8A and 8B from being separated from the carton 1 when the carton is opened.

According to the above-described embodiment, the first cut 91 located on the tear start side of the main surface side tear line 9A is spaced apart from the tear start side edge 83 of the outer third side surface portions 8A and 8B. A third cut 93 that is provided and located on the tear start side of the side tear line 9B is connected to the edge 83 of the outer third side surface 8A, 8B. Therefore, when the tear strip 81 is pulled, the side tear line 9B can be cut before the main surface tear line 9A. It is possible to prevent the outer third side portions 8A and 8B from being cut off from the carton 1 when the carton is opened.

In addition, the first cut 91 includes a guide portion 91B extending in an inclined direction from a straight portion 91A extending on the lateral fold line 33 toward the edge 83 of the outer third side surface portion 8A, 8B on the tear start side. ing. For this reason, the first cuts 91 are spaced from the intersections P1 and P2 of the lateral fold lines 33 and the edges 83 of the outer third side surfaces 8A and 8B while ensuring the distances between the first cuts 91 and the outer third side surfaces 8A and 8B. can be close to the edge 83 of the Therefore, it is possible to ensure ease of cutting the main surface side tear line 9A while preventing the main surface side tear line 9A from being cut earlier than the side surface side tear line 9B.

In addition, the first cut 91 extends from a straight portion 91A extending on the lateral fold line 33 toward the side tear line 9B at a curved line-shaped first guide portion 91C that is convex toward the lateral fold line 33. After that, it goes to the edge 83 of the outer third side surface portions 8A and 8B at the curved line-shaped second guide portion 91D that protrudes toward the side tear line 9B. As a result, the first cut 91 is gently connected by a curve from the first guide portion 91C to the straight portion 91A. can be prevented.

[Second embodiment]
As shown in FIGS. 4 and 5, the carton 1 of this embodiment differs from that of the first embodiment in the shapes of the tear band 81, the main surface side tear line 9A, and the side surface side tear line 9B.

In FIGS. 4 and 5, the tear band 81 has a short width dimension perpendicular to the length direction that is substantially constant over the length direction, and the tab 81B has a shape that does not protrude to the side opposite to the second main surface portion 3. It is

The main surface side tear line 9A includes a first cut 91E as a main surface side first cut and a plurality of second cuts 92 .
The side tear line 9B has a third cut 93, a fourth cut 94C, and a plurality of fifth cuts 95. As shown in FIG.

The first cut 91E has a linear shape that extends on the horizontal fold line 33, starting from a position on the horizontal fold line 33 that is separated from the edge 83 on the tear start side of the outer third side surface portions 8A and 8B. .

The third cut 93 has an introduction portion 93A and an inclined portion 93B.
An angle θ2 (see FIG. 5) formed by the inclined portion 93B with respect to the extension line of the introduction portion 93A is preferably greater than 0 degrees and smaller than 65 degrees.

The fourth cut 94C has a straight portion 94D and an inclined portion 94E.
The straight portion 94</b>D extends on an extension line of the introduction portion 93</b>A of the third cut 93 and is provided in parallel with the lateral fold line 33 .
The inclined portion 94E is inclined from the straight portion 94D toward the main surface side tear line 9A on the tear start side of the straight portion 94D.

The fifth cut 95 is arranged at a position where the straight portion 95A extends on the extension line of the straight portion 94A of the fourth cut 94 . That is, the introduction portion 93A of the third cut 93, the straight portion 94D of the fourth cut 94C, and the straight portion 95A of the fifth cut 95 extend on the same line.

According to the embodiment as described above, the same effects as those of the first embodiment can be obtained.
In addition, the first cut 91 is positioned on the horizontal fold line 33, which is the boundary line between the second main surface portion 3 and the outer third side surface portions 8A, 8B, and is spaced apart from the edge 83 of the outer third side surface portions 8A, 8B. , it is possible to prevent the outer third side surface portions 8A and 8B from being cut off from the carton 1 when the carton 1 is opened, while the first cut 91 has a simple shape.

[Modification]
It should be noted that the present invention is not limited to the above-described embodiments, and includes modifications, improvements, etc. within the scope of achieving the object of the present invention.
For example, the carton 1 is suitable for food, but is not limited to this.

The first main surface portion 2 and the second main surface portion 3 are not limited to substantially rectangular shapes in plan view. It can be oval or oblong.
For example, the lateral fold lines 21 to 23, 31, 32 may be constituted by partially degraded portions of the lateral fold lines 21, 22, 31, 32, or the lateral fold lines 21, 22, 31, 32 may be thin. It may be composed of a thin-walled portion with a In this case, the altered portion and the thin portion may be intermittently provided, or may be provided in a single continuous line.

The inner first side surface portion 4 may have flaps extending on one side or both sides in the width direction. In this case, the outer first side surface 5 may not have one or both of the flaps 51 and 52 .

The side tear line 9B does not have to extend parallel to the main surface tear line 9A.
The tab 81B may have a shape protruding to the side opposite to the second main surface portion 3 . Also, the shape of the tip edges of the tabs 81A and 81B is not limited to that of the embodiment, and may be U-shaped, V-shaped, arc-shaped, or polygonal, for example.
The second incision 92 may be formed such that the inclined portion 92B is curved linearly.
The third cut 93 does not have to be formed in a folded line shape having the introduction portion 93A and the inclined portion 93B. It may be formed in a curved line shape.
The fourth cut 94 does not have to be formed in the shape of a folded line having a straight portion 94A and an inclined portion 94B. Alternatively, the inclined portion 94B may be formed in a curved line shape.
The fourth incision 94C may have an inclined portion 94E formed in a curved line.
The fifth incision 95 may have an inclined portion 95B formed in a curved line.

DESCRIPTION OF SYMBOLS 1... Carton, 1B... Body part, 2... 1st main surface part (one main surface part), 3... 2nd main surface part (other main surface part), 7A, 7B... Inner 3rd side part (inner side part), 8A, 8B... outer third side face (outer side face), 9A... main face side tear line, 9B... side face side tear line, 33... lateral fold line (boundary line), 81... tear band, 83... edge, 91... First cut (first cut on main surface side), 91A... Straight part, 91B... Guide part, 91C... First guide part, 91D... Second guide part, 92... Second cut (cut), 93... Second cut 3rd cut (first cut on the side portion side), 94... 4th cut (cut), 95... 5th cut (cut).

Claims (4)

a cylindrical trunk portion having a pair of main surface portions arranged to face each other;
an inner side surface portion connected to one main surface portion at an axial end portion of the body portion and covering the axial end portion of the body portion;
an outer side surface portion connected to the other main surface portion at an axial end portion of the body portion and overlapping the inner side surface portion from the outside;
a main surface side tear line having a plurality of cuts forming a line on a boundary line between the other main surface portion and the outer side surface portion;
a side tear line that has a plurality of rows of cuts on the outer side surface and forms a tear band together with the main surface tear line,
The main-surface-side tear line includes a first main-surface-side cut located on the tear-starting side of the main-surface-side tear line,
The side portion side tear line includes a side portion side first cut located on the tear start side of the side portion side tear line,
The main surface portion side first cut is provided away from the edge of the outer side surface portion on the tear start side,
The carton, wherein the side first cut is connected to the edge of the outer side portion on the tear initiation side. The main surface portion side first cut is
a straight portion extending on the boundary;
2. The carton according to claim 1, further comprising a guiding portion extending in an inclined direction from the straight portion toward the edge of the outer side portion on the tear initiation side. The main surface portion side first cut has a linear shape extending on the boundary line, starting from a position on the boundary line separated from the edge of the outer side surface portion on the tear initiation side. The carton of Claim 1. 4. The carton according to any one of claims 1 to 3, which is for food.

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