JP2021054469A - carton - Google Patents

Abstract

To provide a carton in which an opening can be enlarged even when a length in an opening direction of an area where a cut row is provided in an inclined direction is short, and an opening surface portion can be cut along a tear line.SOLUTION: A carton comprises: a cylindrical body part 2; a bottom surface part that closes one end of the body part 2 in an axial direction; a tear line 6 for opening; and an opening surface part 5 that is provided so as to be openable in an opening direction D1 by the tear line 6 and forms an opening at the other end of the body part 2 in the axial direction. The opening surface part 5 comprises a tab 51 provided at an end. The tear line 6 comprises a cut row 6A in which a plurality of cuts 63 form a row in an inclined direction D4 that gradually separates from the tab 51 with respect to the opening direction D1. The cut 63 comprises: a first line part 63A that passes an intersection with an extension line E3 which is an extension of the cut 63 located on the tab 51 side from the cut 63, and extends to the upstream side of the opening direction D1 from the intersection; and a second line part 63B that extends from the first line part 63A in the inclined direction D4.SELECTED DRAWING: Figure 3

Description

The present invention relates to a carton.

Conventionally, it is known that a carton is configured to be opened in a predetermined opening direction by a tear wire formed in the carton (see, for example, Patent Document 1).

In the carton described in Patent Document 1, a tear line having a row of cuts in which a plurality of cuts (cuts) are lined up in an inclined direction with respect to the opening direction is formed from a tab for opening. When opening the carton, the opening (opening surface) is cut along the tear line by pulling the tab in the opening direction.

Japanese Patent Application Laid-Open No. 2007-099310

However, in the conventional carton as described above, since the next cut is provided on the downstream side in the opening direction from the extension line of the cut, the length of the region provided with the row of cuts in the inclined direction in the opening direction is long. If it is short, the width of the opening surface formed by the tear line becomes narrow, and the opening of the carton becomes small. On the other hand, if the inclination of the cut row with respect to the opening direction is increased, the force in the opening direction is difficult to be transmitted in the inclination direction and is not connected to the next cut, which causes a problem that the opening surface portion cannot be cut along the tear line.

An object of the present invention is to provide a carton capable of increasing the opening even when the length of the region provided with the row of cuts in the inclined direction in the opening direction is short, and cutting the opened surface portion along the tear line. To do.

The carton of the present invention is provided with a tubular body portion, a bottom surface portion that closes one end of the body portion in the axial direction, a tear line for opening, and a tear line that can be opened in the opening direction. The opening surface portion is provided with an opening surface portion forming an opening at the other end portion in the axial direction of the portion, the opening surface portion is provided with a tab provided at the end portion, and the tear line is gradually separated from the tab in the opening direction. A row of cuts in which a plurality of cuts form a row in the direction of inclination is provided, and the cut passes through an intersection with an extension line extending the cut located on the tab side of the cut, and is in the opening direction from the intersection. It is characterized by including a first line portion extending on the upstream side and a second line portion extending from the first line portion in the inclined direction.

According to the present invention, the cut in the inclined direction includes a first line portion extending upstream of the opening direction from the intersection with the extension line of the cut located on the tab side of the cut. Therefore, each time the tear line moves from one cut to the next, the tear line can be returned to the upstream side in the opening direction at the first line portion, so that the length of the region provided with the cut row in the inclined direction in the opening direction becomes longer. Even if it is short, the width of the opening surface can be widened, and the opening of the carton can be increased.
Further, since the first line portion intersects with the extension line of the cut located on the tab side of the cut, the cut can be connected to the next cut, and the opened surface portion can be cut along the tear line.

In the carton of the present invention, the first line portion is provided at a position overlapping the cut on the tab side when viewed in the opening direction, and the introduction line portion extending in the inclined direction and the opening from the introduction line portion. It is preferable to have a folded line portion that is folded back on the upstream side in the direction and connected to the second line portion.

According to the present invention, since the introduction line portion is provided at a position overlapping the cut on the tab side when viewed in the opening direction, even if the tear line breaks from the end of the cut in the opening direction, the introduction line of the next cut Can be connected to the club. Also. Since the introduction line portion is extended in the inclined direction and the folded line portion is folded back from the introduction line portion to the upstream side in the opening direction, the cut on the tab side can be smoothly connected to the folded line portion via the introduction line portion. It is possible to cut the opened surface portion more reliably along the tear line.

In the carton of the present invention, the cut is provided at a position overlapping the cut on the side opposite to the tab in the opening direction, and the third line portion folded back from the second line portion to the downstream side in the opening direction. It is preferable to have.

According to the present invention, a third line portion is provided at a position overlapping the cut on the opposite side of the tab when viewed in the opening direction, and the third line portion is folded back from the second line portion to the downstream side in the opening direction. Therefore, it is possible to smoothly connect the third line portion to the next cut on the opposite side of the tab. Therefore, the opened surface portion can be cut more reliably along the tear line.

The perspective view of the carton which concerns on one Embodiment of this invention. Development view of the carton. A partially enlarged view of FIG. The perspective view of the carton which concerns on the modification of this invention. A partially enlarged view of a developed view of a carton according to a modified example of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
When indicating the direction in the following description, the state in which the carton 1 is placed as shown in FIG. 1 is used as a reference. Further, the width direction means a direction orthogonal to the axial direction of the body portion 2 on each side surface portion of the carton 1.

[overall structure]
FIG. 1 is a perspective view showing a carton 1 according to the present embodiment. FIG. 2 is a developed view of the carton 1 (a plan view of a carton forming panel (also referred to as a carton blank) 1A).
In FIG. 1, the carton 1 is a so-called top-open type box, and foods such as cheese and butter are housed therein. As shown in FIG. 2, the carton 1 is assembled from a carton forming panel 1A made of a paperboard material.

In FIGS. 1 and 2, the carton 1 includes a body portion 2, a bottom surface portion 3, a top surface portion 4, an opening surface portion 5, and a tear wire 6.

The body portion 2 has a tubular shape having a substantially rectangular shape in a plan view. The body portion 2 includes an inner first side surface portion 21 (see FIG. 2), an outer first side surface portion 22, a second side surface portion 23, an inner third side surface portion 24, and an outer third side surface portion 25.

The inner first side surface portion 21 and the outer first side surface portion 22 are side surface portions on one long side of the body portion 2, and are arranged so as to overlap each other.
The inner first side surface portion 21 includes an insertion portion 21A (see FIG. 2) into which a tab 51 described later of the opening surface portion 5 is inserted. The insertion portion 21A has a first cutting line 21B cut in a curved shape that is convex upward toward the top surface portion 4, and a first straight line cut from the apex of the first cutting line 21B toward the top surface portion 4. It is provided with two cutting lines 21C.
The outer first side surface portion 22 is arranged outside the inner first side surface portion 21, and a region on the bottom surface portion 3 side of the tear line 6 is attached to the inner first side surface portion 21. The outer first side surface portion 22 includes a flap 22A (see FIG. 2) and a notch portion 22B.
The flaps 22A are provided at both ends of the outer first side surface portion 22 in the width direction and extend in the width direction.
The cutouts 22B are provided on both sides of the outer first side surface portion 22 in the width direction of the tab 51, and the edge of the outer first side surface portion 22 on the bottom surface portion 3 side is cut out.

The second side surface portion 23 is a side surface portion on the other long side side of the body portion 2, and faces the inner first side surface portion 21. The second side surface portion 23 includes flaps 23A (see FIG. 2) extending in the width direction at both ends in the width direction.

The inner third side surface portion 24 and the outer third side surface portion 25 are side surface portions on the short side side of the body portion 2, and are both sides in a direction orthogonal to the opposite direction between the inner first side surface portion 21 and the second side surface portion 23. Are placed on top of each other.
The inner third side surface portion 24 includes a flap 24A (see FIG. 2) provided at a position opposite to the bottom surface portion 3.
The outer third side surface portion 25 is arranged outside the inner third side surface portion 24 and is attached to the inner third side surface portion 24.

The bottom surface portion 3 closes one end portion of the body portion 2 in the axial direction. The bottom surface portion 3 is connected to the inner first side surface portion 21 via the horizontal polygonal line 31, the second side surface portion 23 via the horizontal polygonal line 32, and the inner third side surface portion 24 via the horizontal polygonal line 33. ..
The horizontal polygonal line 31 is a so-called perforation in which a plurality of cuts form a row.

The top surface portion 4 closes the other end portion of the body portion 2 in the axial direction. The top surface portion 4 is connected to the outer first side surface portion 22 via the horizontal polygonal line 41, is connected to the second side surface portion 23 via the horizontal polygonal line 42, and is connected to the outer third side surface portion 25 via the tear line 6. Has been done.
The horizontal polygonal line 41 is a so-called perforation in which a plurality of cuts form a row.

The opening surface portion 5 is provided from the outer first side surface portion 22 to the top surface portion 4. The opening surface portion 5 is provided so as to be openable by a tear line 6 in a first opening direction D1 from the bottom surface portion 3 toward the top surface portion 4 and a second opening direction D2 from the outer first side surface portion 22 toward the second side surface portion 23. , An opening for taking out food is formed at the other end of the body portion 2 in the axial direction. The opening surface portion 5 includes a tab 51, an expanding portion 52, and an opening forming portion 53.
The tab 51 is provided at the tip end portion of the outer first side surface portion 22 on the opening surface portion 5.
The expansion portion 52 is composed of a part of the outer first side surface portion 22 and is connected to the tab 51. The expanding portion 52 is formed so as to gradually expand from the tab 51 toward the first opening direction D1, that is, to gradually increase the width direction toward the first opening direction D1.
The opening forming portion 53 is composed of a top surface portion 4, and is connected to the expanding portion 52 via the horizontal polygonal line 41 and to the second side surface portion 23 via the horizontal polygonal line 42.

The tear line 6 is a cutting line for opening the carton 1, and is provided from the outer first side surface portion 22 to the top surface portion 4 as shown in FIG. The tear line 6 includes a first cut row 6A and a second cut row 6B.

The first cut row 6A is provided on the outer first side surface portion 22 and extends from the tab 51 to both ends of the outer first side surface portion 22 in the width direction. In the first cut row 6A, the first cut 61 and the second cut 62 are arranged in order in the first inclined direction D3 which is gradually separated from the tab 51 with respect to the first opening direction D1. Further, in the first cut row 6A, following the second cut 62, a plurality of third cuts 63 and fourth cuts 64 are sequentially arranged in the second inclined direction D4 gradually separated from the tab 51 with respect to the first opening direction D1. There is a line. The second inclination direction D4 is more inclined than the first inclination direction D3 with respect to the first opening direction D1. Further, the inclination angles of the first inclination direction D3 and the second inclination direction D4 with respect to the first opening direction D1 are preferably in the range of 70 degrees or more and 80 degrees or less (the inclination angle with respect to the horizontal polygonal line 31 is 10 degrees or more and 20 degrees or less). ..

The second cut row 6B is provided on the boundary line between the outer third side surface portion 25 and the top surface portion 4, and has a fifth cut 65, a sixth cut 66, and a plurality of seventh cuts 67 toward the second opening direction D2. Are in a row in order.

In FIG. 3, the first cut 61 includes an introduction portion 61A, a first inclined portion 61B, and a second inclined portion 61C.
The introduction portion 61A extends from a position on the tab 51 side of the extension line ET extending the side edge 51A in the width direction of the tab 51 so as to be folded back toward the top surface portion 4 side in the first inclination direction D3. Has been done.
The first inclined portion 61B is a straight line extending from the introduction portion 61A in the first inclined direction D3. The inclination angle of the first inclined portion 61B with respect to the extension line ET (first opening direction D1) is preferably in the range of 70 degrees or more and 80 degrees or less.
The second inclined portion 61C is folded back from the first inclined portion 61B to the downstream side in the first opening direction D1.

The second cut 62 includes a width direction portion 62A, a first inclined portion 62B, and a second inclined portion 62C.
The width direction portion 62A is provided at a position overlapping the first cut 61 in the first opening direction D1, passes through an intersection with an extension line E1 extending the first cut 61, and is in the width direction of the outer first side surface portion 22. It has been extended.
The first inclined portion 62B is a straight line extending from the width direction portion 62A in the first inclined direction D3.
The second inclined portion 62C is folded back from the first inclined portion 62B to the downstream side in the first opening direction D1.

The third cut 63 includes a first line portion 63A, a second line portion 63B, and a third line portion 63C.

The first line portion 63A passes through an intersection with an extension line E2 extending the second cut 62 or an extension line E3 extending the third cut 63 on the tab 51 side, and is upstream of the intersection in the first opening direction D1. It is extended to. The first line portion 63A includes an introduction line portion 631 and a turnaround line portion 632.
The introduction line portion 631 is provided at a position overlapping the second cut 62 or the third cut 63 on the tab 51 side in the first opening direction D1, and is a straight line extending in the first inclination direction D3.
The folded line portion 632 is a straight line that is folded back from the introduction line portion 631 to the upstream side in the first opening direction D1 and is connected to the second line portion 63B.

The second line portion 63B is a straight line extending from the first line portion 63A in the first inclination direction D3.

The third line portion 63C is provided at a position overlapping the third cut 63 on the side opposite to the tab 51 in the first opening direction D1, and is folded back from the second line portion 63B to the downstream side of the first opening direction D1. There is.

The fourth cut 64 includes a width direction portion 64A and an inclined portion 64B.
The width direction portion 64A is provided at a position overlapping the third cut 63 in the first opening direction D1, passes through an intersection with an extension line E4 extending the third cut 63, and is in the width direction of the outer first side surface portion 22. It has been extended.
The inclined portion 64B extends from the width direction portion 64A toward the fifth cut 65.

The fifth cut 65 includes an inclined portion 65A and a straight portion 65B.
The inclined portion 65A is provided at a corner portion on the outer first side surface portion 22 on the side of the horizontal polygonal line 41, and is a straight line inclined toward the fourth cut 64.
The straight line portion 65B is a straight line extending from the inclined portion 65A on the boundary line between the outer third side surface portion 25 and the top surface portion 4.

The sixth cut 66 is provided on an extension line of the straight line portion 65B of the fifth cut 65, and is a straight line extending on the boundary line between the outer third side surface portion 25 and the top surface portion 4.

The seventh cut 67 includes an inclined portion 67A and a straight portion 67B.
The inclined portion 67A is provided at a position on the outer first side surface portion 22 side of the seventh cut 67, and is a straight line inclined toward the inside of the top surface portion 4.
The straight line portion 67B is a straight line extending from the inclined portion 67A on the boundary line between the outer third side surface portion 25 and the top surface portion 4.

[Opening and resealing the carton]
In FIG. 1, when opening the carton 1, the tab 51 is pulled in the first opening direction D1 while grasping and pulling up the tab 51. As a result, the expanding portion 52 of the opening surface portion 5 is pulled by the tab 51 in the first opening direction D1, and the expanding portion 52 is cut along the first cut row 6A. Here, as shown in FIG. 3, the folding line portion 632 of the third cut 63 is first opened from the intersection with the extension line E2 of the second cut 62 or the extension line E3 of the third cut 63 on the tab 51 side. Since it is folded back and extended to the upstream side of the direction D1, the tear line 6 is returned to the upstream side of the first opening direction D1 every time the third cut 63 moves to the next third cut 63. .. Therefore, even when the length of the first opening direction D1 of the outer first side surface portion 22 is short, the width of the expanding portion 52 of the opening surface portion 5 can be widened.

In FIG. 1, after the expansion portion 52 is cut along the first cut row 6A, the tab 51 is pulled in the second opening direction D2. As a result, the opening forming portion 53 of the opening surface portion 5 is cut along the second cut row 6B to form an opening for taking out food.

When resealing the carton 1, the opening surface portion 5 is returned to the position before opening, and the tab 51 is inserted into the insertion portion 21A (see FIG. 2). With this, the tab 51 is locked to the insertion portion 21A, and the opened surface portion 5 can be maintained in a closed state.

According to the above embodiment, the third cut 63 intersects with the extension line E2 of the second cut 62 or the extension line E3 of the third cut 63 located on the tab 51 side of the third cut 63. A first line portion 63A extending upstream of the first opening direction D1 is provided. Therefore, every time the third cut 63 moves to the next third cut 63, the tear line 6 can be returned to the upstream side of the first opening direction D1 at the first line portion 63A, so that the first cut row 6A Even when the length of the first opening direction D1 of the provided region is short, the width of the opening surface portion 5 can be widened, and the opening of the carton 1 can be increased.
Further, since the first line portion 63A intersects the extension line E2 of the second cut 62 or the extension line E3 of the third cut 63 located on the tab 51 side of the third cut 63, the second cut 62 or the third The cut 63 can be connected to the next third cut 63, and the opening surface portion 5 can be cut along the tear line 6.

Further, since the introduction line portion 631 is provided at a position overlapping the second cut 62 or the third cut 63 on the tab 51 side in the first opening direction D1, the tear line 6 is the second cut 62 or the third cut. Even if the end portion of 63 is broken in the first opening direction D1, it can be connected to the introduction line portion 631 of the next third cut 63. Also. Since the introduction line portion 631 extends in the second inclined direction D4 and the folding line portion 632 is folded back from the introduction line portion 631 to the upstream side of the first opening direction D1, the second cut 62 or the tab 51 side. The third cut 63 can be smoothly connected to the turn-back line portion 632 via the introduction line portion 631, and the opening surface portion 5 can be cut more reliably along the tear line 6.

Further, a third wire portion 63C is provided at a position overlapping the second cut 62 or the third cut 63 on the opposite side of the tab 51 in the first opening direction D1, and the third wire portion 63C is the second wire portion. Since it is folded back from 63B to the downstream side of the first opening direction D1, the third line portion 63C can be smoothly connected to the next third cut 63 on the side opposite to the tab 51. Therefore, the opening surface portion 5 can be cut more reliably along the tear line 6.

[Modification example]
The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the range in which the object of the present invention can be achieved are included in the present invention.
For example, carton 1 is suitable for food use, but is not limited thereto.

The body 2 is not limited to a cylindrical shape having a substantially rectangular shape in a plan view, and for example, a substantially triangular shape in a plane view, a quadrangle other than a rectangle such as a square or a rhombus, a tubular shape having a polygonal shape of pentagons or more, and a tubular shape having a substantially rectangular shape in a plan view. It may be a cylindrical shape such as a perfect circle, an oval shape, or an oval shape.

The inner first side surface portion 21 may include flaps extending on one side or both sides in the width direction. In this case, the outer first side surface portion 22 may not include the flap 22A.
The first cutting line 21B of the insertion portion 21A may be cut into a fold curve such as a triangle, a rectangle, or a polygon that is convex upward toward the top surface portion 4.
The second cutting line 21C of the insertion portion 21A may be extended from a position other than the apex on the first cutting line 21B, or may be extended from a plurality of points other than the apex on the first cutting line 21B. It may be extended from a plurality of different positions on the first cutting line 21B.

The inner third side surface portion 24 or the outer third side surface portion 25 may include flaps extending on one or both sides in the width direction. In this case, the inner first side surface portion 21 and the outer first side surface portion 22 may not have flaps on one side or both sides in the width direction.

The horizontal polygonal lines 31 and 41 are not limited to the case where they are composed of perforations. For example, the horizontal polygonal lines 31 and 41 may be composed of a partially altered portion, or the horizontal polygonal lines 31 and 41 may be thin-walled. It may be composed of a thin-walled portion. In this case, the altered portion and the thin-walled portion may be provided so as to be lined up intermittently like a breaking line, or may be provided in a continuous linear shape.

The opening surface portion 5 and the tear wire 6 may not be provided from the outer first side surface portion 22 to the top surface portion 4, and may be provided only on the top surface portion 4 as shown in FIG. In this case, the second cut row 6B may or may not include the seventh cut 67 instead of the fifth cut 65, or may not include the sixth cut 66. Further, the insertion portion 21A may not be provided.
The tip edge of the tab 51 is not limited to that of the embodiment, and may have a curved shape such as a U-shape, a V-shape, an arc shape, or a polygonal shape.
The shape of the opening forming portion 53 is not limited to that of the embodiment, and may be, for example, a substantially triangular shape in a plan view, a quadrangle such as a square or a parallelogram, or a circular arc. It may be (a shape in which a part of a circle is cut by a straight line).

The first cut row 6A may not include the first cut 61 and the second cut 62. In this case, the third cut 63 may be arranged side by side in the second inclination direction D4 from the extension line of the side edge 51A of the tab 51.
The first cut row 6A may not include the second cut 62. In this case, the third cut 63 may be arranged side by side after the first cut 61.
The first cut row 6A may be provided with a third cut 63 instead of the fourth cut 64.

The second cut row 6B may be provided on the top surface portion 4 side of the boundary line between the outer third side surface portion 25 and the top surface portion 4, that is, in the inner region of the top surface portion 4, or may be provided with the outer third side surface portion 25. The fifth cut 65, the sixth cut 66, and the seventh cut 67 may be arranged side by side on a curve such as an arc or a waveform in the top surface portion 4 and the boundary line or the inner region of the top surface portion 4.

The first inclined portion 61 may have the first inclined portion 61B extended in the second inclined direction D4, or may not include the second inclined portion 61C.
The introduction portion 61A may not extend from a position on the tab 51 side of the extension line ET, and may extend from a position on the extension line ET, for example.
The second inclined portion 62 may have the first inclined portion 62B extended in the second inclined direction D4, or may not include the second inclined portion 62C.
The third line portion 63 may extend the second line portion 63B in the second inclination direction D4, or may not include the third line portion 63C.
As shown in FIG. 5, the third cut 63 does not have to include the introduction line portion 631 and the third line portion 63C, or includes either the introduction line portion 631 or the third line portion 63C. It does not have to be.
The introduction line portion 631 may have a curved shape or may extend in the second inclination direction D4.
The folded line portion 632 may have a curved shape.
The fourth cut 64 may have the same shape as the third cut 63, and in this case, the third wire portion 63C may not be provided.
The sixth cut 66 may or may not be formed integrally with the fifth cut 65 by extending the straight portion 65B of the fifth cut 65.

The second opening direction D2 does not have to be a direction orthogonal to the horizontal polygonal lines 41 and 42, and may be a direction intersecting the direction orthogonal to the horizontal polygonal lines 41 and 42.
The first inclination direction D3 may be the same direction as the second inclination direction D4.

1 ... Carton, 2 ... Body, 3 ... Bottom, 5 ... Opening surface, 6 ... Tear line, 6A ... 1st cut row (cut row), 51 ... Tab, 63 ... 3rd cut (cut), 63A ... 1st line part, 63B ... 2nd line part, 63C ... 3rd line part, 631 ... Introduction line part, 632 ... Folding line part, D1 ... 1st opening direction (opening direction), D2 ... 2nd opening direction (opening direction) Direction), D3 ... 1st tilt direction (tilt direction), D4 ... 2nd tilt direction (tilt direction).

Claims (4)

Cylindrical body and
A bottom surface that closes one end of the body in the axial direction and
The tear line for opening and
It is provided with an opening surface portion which is provided so as to be openable in the opening direction by the tear wire and which forms an opening at the other end portion in the axial direction of the body portion.
The opened surface portion is provided with a tab provided at the end portion, and the opening surface portion is provided with a tab.
The tear line comprises a row of cuts in which a plurality of cuts form a row in an inclined direction that gradually separates from the tab with respect to the opening direction.
The cut is
A first line portion that passes through an intersection with an extension line that extends the cut located on the tab side of the cut and extends upstream of the intersection in the opening direction.
A carton including a second line portion extending in the inclined direction from the first line portion. The first line part is
An introduction line portion provided at a position overlapping the cut on the tab side when viewed in the opening direction and extending in the inclined direction, and an introduction line portion.
The carton according to claim 1, further comprising a folded line portion that is folded back from the introduction line portion to the upstream side in the opening direction and connected to the second wire portion. The cut is provided at a position overlapping the cut on the side opposite to the tab in the opening direction, and includes a third line portion folded back from the second line portion to the downstream side in the opening direction. The carton according to claim 1 or 2. The carton according to any one of claims 1 to 3, wherein the carton is for food use.

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