CN111717501A

CN111717501A - Packing box, white board of packing box and packing body

Info

Publication number: CN111717501A
Application number: CN202010193802.4A
Authority: CN
Inventors: 平山佳子; 铃木亨; 桥本健司
Original assignee: Nissin Foods Holdings Co Ltd; Oji Holdings Corp
Current assignee: Nissin Foods Holdings Co Ltd; Oji Holdings Corp
Priority date: 2019-03-19
Filing date: 2020-03-18
Publication date: 2020-09-29
Also published as: JP2020152397A; JP2023010968A; JP7184684B2

Abstract

The invention provides a packaging box, a white board of the packaging box and a packaging body, wherein the packaging box can be easily opened by cutting a wave-shaped fracture line arranged on a length face part. The packaging box (10) has a substantially rectangular parallelepiped shape, and the length surface portions (12, 13) are formed with: a wave-shaped first fracture line (C1) that extends in the longitudinal direction and that has one trough, two crests adjacent to the trough, and two ends connected to the width surface via a curve that gradually descends from the two crests; and a pair of first guide scribe lines (R1) and a pair of second guide scribe lines (R2) which are inclined at a position above the first break line (C1) in the longitudinal direction so as to be spaced apart from each other and widen upward at positions between the trough portions and near the corners of the top surface portion, and second break lines (C2) which are continuous with the first break lines (C1) are formed on the width surface portions (22, 23).

Description

Packing box, white board of packing box and packing body

Technical Field

The present invention relates to a packaging box that can be easily opened, a blank board for the packaging box, and a package.

Background

Conventionally, in a package box having a substantially rectangular parallelepiped shape and a height lower than the length of the short sides of the top surface portion and the bottom surface portion, a linear fracture line extending in the longitudinal direction is provided in the longitudinal surface portion (side surface extending in the longitudinal direction) as a structure for opening. In such a packaging box, the following problems arise: when a load is applied to the top surface portion during assembly by a wrapping type container loader or the like, the top surface portion is accidentally bent at a linear fracture line provided in the longitudinal surface portion. In addition, in this packaging box, there is a problem that the opening force is difficult to be transmitted in the longitudinal direction in which the breaking line extends.

Here, patent document 1 describes that the fracture line in the long surface portion is formed in a wave shape, and the fracture initiation portion is provided in the trough portion of the wave shape. This prevents the breaking line from being bent during assembly, and the opening force can be effectively used from the valley portion of the wavy breaking line along the crest portion.

Prior art documents

Patent document

Patent document 1: japanese utility model registration No. 3156835

However, patent document 1 has the following problems. The first problem is that, as the unsealing operation, first, the opening portion of the fracture line is rotated and lifted while being held by a finger, but the unsealing force is not easily along the wave-shaped fracture line, and therefore, is concentrated above the opening portion, and the opening portion may be chipped (hereinafter, referred to as "chipping above the opening portion"). A second problem is that, since the breaking line has a wavy shape, the opening force is hard to be transmitted across the crest of the breaking line, and the cutting along the breaking line from the opening portion is stopped in the vicinity of the crest, so that the opening is hard to be easily performed (hereinafter, referred to as "separation stop in the vicinity of the crest").

Disclosure of Invention

Problems to be solved by the invention

The invention aims to provide a packaging box which can be easily opened by cutting a wave-shaped fracture line arranged on a long face part, a white board (B1ank sheet) of the packaging box and a packaging body.

Means for solving the problems

The present invention provides a packaging box having a substantially rectangular parallelepiped shape, the packaging box including a rectangular top surface portion, a rectangular bottom surface portion, a pair of length surface portions connecting respective long sides of the top surface portion and the bottom surface portion, and a pair of width surface portions connecting respective short sides of the top surface portion and the bottom surface portion, the length surface portions being formed with: a wave-shaped first fracture line extending in the longitudinal direction and having one valley portion, two peak portions adjacent to the valley portion, and two end portions connected to the width surface portion via a curve gently descending from the two peak portions; a pair of first guide scribe lines which are located above the first fracture line and which sandwich the trough portion in the longitudinal direction, and which are inclined so that the distance between the first guide scribe lines increases upward; and a pair of second guide scribe lines which are located above the first break line and close to the corners of the top surface portion, are inclined so that the distance between the second guide scribe lines increases upward, and are formed with second break lines extending in the width direction and continuing from the first break lines on the width surface portion.

The invention provides a whiteboard of a packing box, which is characterized in that the whiteboard is provided with: the top surface part is rectangular and is provided with a first bending line and a second bending line which are parallel to each other and a pair of third bending lines which are orthogonal to the first bending line and are parallel to each other; one of the length surface portions is rectangular, has a pair of fourth bending lines orthogonal to the first bending line and parallel to each other, and is connected to the top surface portion via the first bending line; the other length surface part is rectangular, has a fifth bending line parallel to the second bending line and a pair of mutually parallel sixth bending lines orthogonal to the second bending line, and is connected with the top surface part through the second bending line; the bottom surface portion is rectangular, has a pair of mutually parallel seventh bending lines orthogonal to the fifth bending lines, and is connected to the other length surface portion via the fifth bending lines; a pair of first inner wing portions provided in connection with one of the length face portions via the pair of fourth bending lines, respectively; a pair of second inner wing portions provided in connection with the other of the length face portions via the pair of sixth bending lines, respectively; a pair of first outer wing portions respectively connected to the top surface portion via the pair of third bending lines; and a pair of second outer wing portions respectively provided in connection with the bottom surface portion via the pair of seventh bending lines.

Effects of the invention

According to the present invention, it is possible to provide a packaging box that can be easily opened by cutting a wave-shaped break line provided on a longitudinal surface portion, a blank board for the packaging box, and a packaging body.

Drawings

Fig. 1 is a perspective view of a packaging box before being opened according to an embodiment of the present invention.

Fig. 2 is a side view of the package shown in fig. 1, (a) is a side view of a second face portion, and (b) is a side view of a third face portion.

Fig. 3 is a top view of the blank of the package of fig. 1 unfolded.

Fig. 4 is a partially enlarged perspective view of the packaging box shown in fig. 1 in an unopened state.

Fig. 5 is a diagram illustrating a fracture starting state in the opening operation of the packaging box shown in fig. 4.

Fig. 6 is a diagram illustrating a state in which the container box shown in fig. 5 is broken from the opening toward the ridge during the opening operation.

Fig. 7 is a diagram illustrating a deformation starting state of the rim extending in the height direction in the opening operation of the packaging box shown in fig. 6.

Fig. 8 is a diagram illustrating a state of fracture of the package box shown in fig. 7 due to deformation of the edge extending in the height direction during the opening operation.

Fig. 9 is a perspective view showing an article display mode in an opened state of the packaging box shown in fig. 8.

Description of the reference numerals

1 packaging body

10 packing case

10B white board

11 first face (Top face)

12 second face (one length face)

12a upper second surface

12b upper second surface

13 third face (another length face)

13a upper side third surface part

13b upper side third surface part

14 fourth face (bottom)

15 fifth face (side face, length face)

22a pair of first inner wing parts (width face part)

22a upper first inner wing part

22b lower first inner wing part

23a pair of second inner wing parts (Width face)

23a upper second inner wing part

23b lower second inner wing part

31 a pair of first external wing parts (width face)

34 a pair of second wing parts (Width face)

70 article

First line of rupture of C1

Second line of disruption of C2

Third line of weakness at the top of C3a

Third line of weakness at the lower side of C3b

Cs fracture initiation section

Line for Rs holding

R1 pair of first guide scribe lines

R2 pair of second guide scribe lines

L1 first edge (first bend line)

L2 second edge (second bend line)

L3A pair of third rims (third bend line)

L4A pair of fourth rims (fourth bend line)

L5 fifth edge (fifth bend line)

L6A pair of sixth rims (sixth bend line)

L7A pair of seventh rims (seventh bending line)

L8 eighth edge (eighth bend line).

Detailed Description

Hereinafter, the embodiments will be described in detail with reference to fig. 1 to 9. However, the present invention is not limited to the embodiment of the present embodiment. In the package case 1O of the present embodiment, a single-corrugated double-faced corrugated paper is used, in which a corrugated medium is disposed between a front liner (the outer surface of the package case 10) and a back liner (the inner surface of the package case 10).

< about term >

In the description of the present specification and the claims, "package" refers to the package box 10 in a state in which an article is accommodated, and particularly refers to a state after the package box 10 is manufactured with an article 70 (see fig. 9) accommodated therein and before being opened.

In the description of the present specification and claims, "height" represents the distance between the first surface portion 11 and the fourth surface portion 14, "width" represents the distance between the second surface portion 12 and the third surface portion 13, and "length" represents the distance between the opposing surfaces formed by the first inner wing portion 22, the second inner wing portion 23, the first outer wing portion 31, and the second outer wing portion 34. In the description of the present specification and claims, "longitudinal surface" means a surface extending in the height direction and the longitudinal direction, and "width surface" means a surface extending in the height direction and the width direction. In the description of the present specification and claims, "upper" means the first surface portion 11 side, and "lower" means the fourth surface portion 14 side. In addition, in the description of the present specification and the claims, "guide score line" indicates a score line for guiding deformation in the package box 10.

< one embodiment >

< construction >

Fig. 1 is a perspective view of a packaging box 10 before opening, according to an embodiment of the present invention, fig. 2 is a side view of the packaging box shown in fig. 1, (a) is a side view showing a second surface portion 12, (B) is a side view showing a third surface portion 13, and fig. 3 is a plan view of a blank board 10B obtained by spreading the packaging box 10 shown in fig. 1. Here, in fig. 3, the solid line indicates the outer shape of the white board 10B, the thin broken line indicates a bending line and a scribe line for facilitating bending, and the thick broken line indicates a broken line in which a cut having an appropriate shape such as a straight shape, a wavy shape, a substantially hook shape, a "Y" shape, or the like for facilitating a breaking operation by a user as desired is broken in addition to facilitating a bending operation and deformation.

The package 1 according to the present embodiment is configured by housing an article 70 (see fig. 9) in a package box 10. The article 70 in the present embodiment is suitably shaped into a cylindrical shape, an inverted truncated cone shape, or the like, and has a shape that causes a gap with the stored packaging box 10. Specifically, the container is suitable for containing cup-noodle products and the like.

As shown in fig. 1 to 3, the package box 10 of the present embodiment is a corrugated paper package box according to JIS Z1507-. The package 10 is configured to include five rectangular face portions from the first face portion 11 to the fifth face portion 15, four inner wing portions of the pair of first inner wing portions 22 and the pair of second inner wing portions 23, and four outer wing portions of the pair of first outer wing portions 31 and the pair of second outer wing portions 34. In the package box 10 of the present embodiment, as shown in fig. 3, the fifth surface portion 15, the fourth surface portion 14, the third surface portion 13, the first surface portion 11, and the second surface portion 12 are continuous in this order from the left, while the second surface portion 12 and the fifth surface portion 15 are discontinuous.

The first surface portion (top surface portion) 11 is rectangular and has a first edge L1 and a second edge L2 that are parallel to each other, and a pair of third edges L3 that are parallel to each other and orthogonal to the first edge L1.

The second surface portion (one longitudinal surface portion) 12 is rectangular, has a pair of parallel fourth edges L4 perpendicular to the first edge L1, and is bent at right angles to the long sides of the first surface portion 11 via the first edge (first bending line) L1.

The third surface portion (the other longitudinal surface portion) 13 is rectangular, has a fifth edge L5 parallel to the second edge L2, and a pair of parallel sixth edges L6 orthogonal to the second edge L2, is bent at a right angle via the second edge (second bending line) L2, is provided so as to be continuous with the long side of the first surface portion 11, and faces the second surface portion 12.

The fourth surface portion (bottom surface portion) 14 is rectangular, has a pair of mutually parallel seventh edges L7 orthogonal to the fifth edge L5, and an eighth edge L8 parallel to the fifth edge L5, is bent at a right angle via the fifth edge (fifth bending line) L5, is provided so as to be continuous with the long side of the third surface portion 13, and faces the first surface portion 11.

The fifth surface portion (side surface portion, longitudinal surface portion) 15 is rectangular, is bent at a right angle via an eighth edge (eighth bending line) L8, is provided so as to be continuous with the long side of the fourth surface portion 14, and faces the third surface portion 13.

The pair of first inner wing portions (width surface portions) 22 are respectively provided so as to be connected to short sides of the second surface portion 12 by being bent at right angles via a pair of fourth edges (fourth bending lines) L4, and are opposed to each other.

The pair of second inner wing portions (width surface portions) 23 are respectively provided so as to be connected to short sides of the third surface portion 13 by being bent at right angles via a pair of sixth edges (sixth bending lines) L6, and are opposed to each other.

The pair of first outer wing portions (width surface portions) 31 are respectively provided so as to be connected to the short sides of the first surface portion 11 by being bent at right angles via a pair of third edges (third bending lines) L3, and are opposed to each other.

The pair of second wing portions (width surface portions) 34 are respectively provided so as to be connected to the short sides of the fourth surface portion 14 by being bent at right angles via a pair of seventh edges (seventh bending lines) L7, and are opposed to each other.

(about the fracture line)

The fracture line C1 in the second panel 12, the fracture line C2 in the pair of first inner wing portions 22, and the fracture lines C3a and C3b in the pair of fourth edges L4 in the present embodiment will be described with reference to fig. 2 (a) and 3. Here, the fracture line C1 in the third face portion 13, the fracture line C2 in the pair of second inner wing portions 23, and the fracture lines C3a and C3b in the pair of sixth edges L6 are the same as the fracture line C1 in the second face portion 12, the fracture line C2 in the pair of first inner wing portions 22, and the fracture lines C3a and C3b in the pair of fourth edges L4, respectively, and therefore description thereof is omitted.

The second surface portion 12 is formed with a wave-shaped first fracture line C1 extending in the longitudinal direction. The wave-shaped first fracture line C1 has: a trough portion including a fracture initiation Cs; two flat crests C1 a; and two end portions C1b connected to a pair of second break lines C2 described later in detail via curves gently descending from the two crests C1a, respectively. Here, in the second surface 12, a region above the first break line C1 is referred to as an upper second surface 12a, and a region below the first break line C1 is referred to as a lower second surface 12 b. Similarly, in the third surface portion 13, a region above the first fracture line C1 is defined as an upper third surface portion 13a, and a region below the first fracture line C1 is defined as a lower third surface portion 13 b. In the wave-shaped first break line C1 of the present embodiment, the height of each of two intersections Csa at which the break start portion Cs and the gripping score line Rs described later in detail are provided, and two end portions C1b at which the first break line C1 and the pair of second break lines C2 are connected is set to be substantially 1/2 the height of the package box 10. The breakage start portion Cs is formed in a tab shape as a separation start portion at a position not covered by the fifth surface portion 15 (see fig. 2 a) and where a gap is formed between the package 10 and the article 70 in a state where the article 70 is stored in the package 10. Thus, the user allows the press-fitting of the breakage start portion Cs during the unsealing operation, and the breakage start portion Cs comes into contact with the article 70 by the press-fitting, so that the article 70 is not damaged. The fracture starting portion Cs in the present embodiment is provided at a position offset from the center in the longitudinal direction of the second surface 12, but is not limited to this, and may be provided at the center in the longitudinal direction of the second surface 12 in accordance with the arrangement of the articles 70 stored in the package box 10. Here, the first break line C1 and the pair of second break lines C2 in the wave shape are provided to divide the package box 10 into two parts in the height direction and to make the package box 10 in the commodity display form (see fig. 9).

Further, a pair of second break lines C2 connected to the first break lines C1 and extending toward the end edges in the extending direction thereof are formed in each of the pair of first inner flap portions 22. In the present embodiment, the second fracture line C2 is formed to be located on an extension line of the boundary between the first and

second airfoil portions

31 and 34. Here, of the pair of first inner wing portions 22, a region on the upper side of the second break line C2 is referred to as an upper first inner wing portion 22a, and a region on the lower side of the second break line C2 is referred to as a lower first inner wing portion 22 b. Similarly, of the pair of second inner wing portions 23, the region above the second break line C2 is referred to as an upper second inner wing portion 23a, and the region below the second break line C2 is referred to as a lower second inner wing portion 23 b.

In the pair of fourth edges L4, an upper third fracture line C3a is continuously formed above the first fracture line C1 and the second fracture line C2, and a lower third fracture line C3b is continuously formed below the first fracture line C1 and the second fracture line C2. Similarly, in the pair of sixth edges L6, an upper third fracture line C3a is continuously formed above the first fracture line C1 and the second fracture line C2, and a lower third fracture line C3b is continuously formed below the first fracture line C1 and the second fracture line C2. Here, the details will be described later, but the upper third breaking line C3a and the lower third breaking line C3b in the present embodiment are provided in order to facilitate deformation of the edges (the pair of fourth edges L4 and the pair of sixth edges L6) extending in the height direction of the package box 10 and prevent the package box 10 from becoming a flat shape whose volume increases when discarded.

The first fracture line C1 of the present embodiment is configured by arranging a plurality of first fracture lines C1 in such a shape that the lower portion of the letter "Y" is directed toward the pair of fourth edges L4 in the adjacent portion of the fracture-starting portion Cs. The first fracture line C1 of the present embodiment is configured to have a substantially hook shape in the adjacent portion of the end portion C1 b. The second fracture line C2 of the embodiment is formed by arranging a plurality of substantially hook shapes. In addition, the fracture starting section Cs of the present embodiment is configured by narrowing the interval between the cuts and making the length of the cut relatively long so as to be easily opened by the pushing action of the user.

In the present embodiment, the breaking lines are formed in the fifth edge L5, the eighth edge L8, and the holding scribe line Rs, respectively, for facilitating the bending.

(for scribing)

The second face 12 of the present embodiment will be described with reference to fig. 2 (a) and 3 with reference to the dashed lines Rs, R1, and R2. Here, the scribe lines Rs, R1, and R2 of the third surface portion 13 shown in fig. 2 (b) are the same as the scribe lines Rs, R1, and R2 of the second surface portion 12 shown in fig. 2 (a), and therefore, description thereof is omitted.

In the second surface portion 12, a holding score line Rs in an arc shape curved upward is formed in the vicinity of the upper side of the fracture starting portion Cs so that the fracture starting portion Cs can be easily bent toward the inside of the package 1. The holding score line Rs in the present embodiment has an arc shape curved upward, but is not limited to this, and may have a straight shape. In the present embodiment, since the user's finger is inserted into the region surrounded by the fracture starting portion Cs and the holding scribe line Rs, it is preferable that the height be 15 to 30mm and the length be 50 to 70 mm.

In the second surface 12, a pair of first guide scribe lines R1 are formed as straight lines whose interval therebetween increases upward in the vicinity of an intersection Csa of the breakage start portion Cs and the holding scribe line Rs. Specifically, the pair of first guide scribe lines R1 are formed on a line passing through the intersection Csa of the fracture start portion Cs and the holding scribe line Rs and extending the both end sides in the longitudinal direction of the fracture start portion Cs obliquely upward. Here, the angle α (see fig. 2 a) formed by the pair of first guide scribe lines R1 with respect to the first edge L1 in the present embodiment is, for example, in the range of 30 ° to 60 °, but is preferably 45 °. As described in detail later, the first problem (chipping above the opening 40) in patent document 1 is solved because the opening force during the opening operation is not concentrated above the opening 40 (see fig. 5).

In the second panel 12, a pair of second guide scribe lines R2 are formed as straight lines whose mutual interval widens upward in the vicinity of the upper corner 11a, which is the intersection of the first edge L1 and the pair of third edges L3. Specifically, the pair of second guide scribe lines R2 will be described in detail later, but are formed on a line connecting a point between the crest C1a and the end C1b of the first break line C1 and the upper corner 11 a. Here, the angle β (see fig. 2 a) formed by the pair of second guide scribe lines R2 with respect to the first edge L1 in the present embodiment is, for example, in the range of 30 ° to 60 °, but is preferably 45 °. Accordingly, as will be described in detail later, the unsealing force at the time of the unsealing operation can be effectively applied from the crest C1a of the first fracture line C1 to the end C1b, and thus the second problem (separation stop in the vicinity of the crest) in the above-described patent document 1 can be solved. Further, although described in detail later, since deformation of the edges (the pair of fourth edges L4 and the pair of sixth edges L6) extending in the height direction, which is generated during the opening operation, is generated at a position where a gap is formed between the package box 10 and the article 70 by the pair of second guide score lines R2, the deformation can be allowed, and the article 70 can be prevented from being damaged by the deformation of the edges.

The holding score line Rs, the pair of first guide score lines R1, and the pair of second guide score lines R2 in the present embodiment are formed by adding lines from the back side so as to reduce the thickness, in order to facilitate bending in the package box 10. In the present embodiment, the first guide scribe line R1 and the second guide scribe line R2 are provided as a pair of straight lines whose interval therebetween increases upward, but the present invention is not limited thereto, and may be provided as two or three pairs of straight lines whose interval therebetween increases upward.

The whiteboard 10B of the present embodiment is set such that the first bend line L1, the second bend line L2, the fifth bend line L5, and the eighth bend line L8 are vertical score lines (so-called creases) of the corrugated paper, and the pair of third bend lines L3, the pair of fourth bend lines L4, the pair of sixth bend lines L6, and the pair of seventh bend lines L7 are horizontal score lines (so-called notches) of the corrugated paper. The direction of forming the score line in the present embodiment is along each edge, but the score line is not limited to this, and may be formed in any direction as long as the object of the present invention of easy opening can be achieved.

< Assembly of packaging case >

An example of the package 10 assembled from the whiteboard 10B in the present embodiment will be described. First, the whiteboard 10B is disposed with the back board on the upper side, and the stored article 70 is placed on the first surface portion 11. Next, the second face 12 and the third face 13 are bent around the first face 11 via the first bending line L1 and the second bending line L2. Then, the pair of first inner wing portions 22 and the pair of second inner wing portions 23 are bent via the pair of fourth bending lines L4 and the pair of sixth bending lines L6. Next, the pair of first outer wing portions 31 are bent via the pair of third bending lines L3 so as to overlap the first inner wing portions 22 and the second inner wing portions 23, and are bonded to the first inner wing portions 22 and the second inner wing portions 23. Further, the fourth face portion 14 is bent via the fifth bending line L5 to be in a state of facing the first face portion 11, and then the pair of second outer wing portions 34 are bent via the pair of seventh bending lines L7 so as to be overlapped on the first inner wing portions 22 and the second inner wing portions 23, and are bonded to the first inner wing portions 22 and the second inner wing portions 23. Finally, the fifth face 15 is folded via the eighth folding line L8 so as to overlap the second face 12, and is bonded to the second face 12, thereby assembling the packaging box 10 shown in fig. 1. The bonding in the present embodiment is performed by, for example, bonding (hot melting) with an adhesive such as a hot-melt resin. In addition, the adhesive in the present embodiment can be applied to each bonding site at an appropriate timing. By this assembly, the package box 10 is formed in which the first face 11 is a top face, the fourth face 14 is a bottom face, the second face 12, the fifth face 15, and the third face 13 are length faces, and the pair of first inner wing portions 22, the pair of second inner wing portions 23, the pair of first outer wing portions 31, and the pair of second outer wing portions 34 are width faces.

< opening action of packaging case >

The operation of opening the packaging box 10 when taking out the article 70 stored in the packaging box 10 will be described in detail with reference to fig. 4 to 9. Fig. 4 is a partially enlarged perspective view of the packaging box 10 shown in fig. 1 in an unopened state, and fig. 5 to 9 are explanatory views of a fracture start state, a fracture state from the opening 40 to the ridge portion C1a, a deformation start state of the rim L4 extending in the height direction, a fracture state accompanying deformation of the rim L4 extending in the height direction, and an opened state, respectively, in the opening operation of the packaging box 10. The open arrows A, B, E, F, G, I, K in the figure indicate the direction of the force applied by the user to the package 10, and the solid arrows D, H, J indicate the direction of deformation of the package 10. The unsealing operation of the second face portion and the third face portion 13 in the present embodiment may be performed simultaneously or separately. Here, the unsealing operation in the third surface 13 is the same as the unsealing operation in the second surface 12, and therefore, the description thereof is omitted. In the unsealing operation of the second panel 12, the unsealing operation at the first break line C1 located further to the longitudinal direction depth side (the little finger side of the user in fig. 4) than the fracture start section Cs is the same as the unsealing operation at the first break line C1 located further to the longitudinal direction front side (the thumb side of the user in fig. 4) than the fracture start section Cs, and therefore, the explanation thereof is omitted.

(fracture initiation State)

First, in the unopened state of the packaging box 10 shown in fig. 4, the user's fingertips are pushed into the tab-shaped breakage start portions Cs formed in the valley portions of the first breakage line C1 (see hollow arrow a in fig. 4). Here, the fracture start portion Cs is configured by narrowing the interval between the cuts and making the length of the cut relatively long, and therefore, as shown in fig. 5, the fracture is caused by a small pushing force to form the opening 40. Thereafter, the fingertip is further pushed into the fracture start portion Cs, and the fracture start portion Cs is bent inward of the package 10 via the holding score line Rs. At this time, the opening operation can be performed more stably by bringing a part of the thumb or palm into contact with the first edge L1 and the first face portion 11.

(fracture state from opening to crest)

Further, as shown in fig. 5, the user's finger is hooked on the portion bent inward via the holding score line Rs, and the upper second surface portion 12a starts to rotate outward of the packing box 10 about the first edge L1 as a rotation axis (see the hollow arrow B in fig. 5). In this state, the opening force B (rotational force) of the user indirectly acts on the crest C1a, and the first fracture line C1 can be cut from the opening 40 to the crest C1 a. Specifically, as shown in fig. 6, the first raised portion D is generated in the first guide score line R1 formed in the vicinity of the holding score line Rs in the order from below to above due to the opening force B (see solid arrow D in fig. 6). Since the first raised portion D acts like a hinge, the opening force B is converted into a shearing force E (see an open arrow E in fig. 6) on a surface along the upper second surface 12a via the first raised portion D. The shear force E acts to pull the upper second surface 12a surrounded by the first raised portion D and the fourth edge L4(C3a) through the first raised portion D. Here, as shown in fig. 2 (a), the first fracture line C1 in the present embodiment has a wave shape having a valley portion including the fracture initiation portion Cs and gentle peaks C1a arranged between the valley portion and the end portion C1 b. Accordingly, the shear force E along the surface of the upper second panel 12a shown in fig. 6 is effectively applied to the crest C1a from the opening 40 of the adjacent first fracture line C1, and the first fracture line C1 can be cut to the crest C1 a.

In the present embodiment, the opening force B is not concentrated above the opening 40, but is converted into the shearing force E along the surface of the upper second surface 12a via the first projecting portion D formed by the first fracture line C1, and therefore the first problem (the fracture above the opening) in the above-described patent document 1 can be solved.

(deformation starting state of the rim extending in the height direction)

Next, as shown in fig. 7, the upper second surface 12a is further rotated to the outside of the package box 10 (see an outlined arrow F in fig. 7). The rotation force F indirectly acts on the fourth rim (the rim extending in the height direction) L4, so that deformation is started in which the central portion of the fourth rim L4 is dented toward the inside of the packing case 10 (refer to a solid arrow J in fig. 7). Specifically, the rotational force F acts along a shear force G (see an outlined arrow G in fig. 7) on the surface of the upper second surface portion 12a via the first raised portion D. Due to the shearing force G on the surface along the upper second surface portion 12a, the second raised portion H (see solid arrow H in fig. 7) is sequentially generated from below toward above in the second guide scribe line R2 formed in the vicinity of the upper corner portion 11 a. Since the second raised portion H acts like a hinge, the shear force G on the surface along the upper second surface 12a is converted into the shear force I on the surface along the upper second surface 12a (see an outlined arrow I in fig. 7) via the second raised portion H. The shearing force I acts to pull the upper second surface 12a surrounded by the second raised portion H and the upper fourth edge L4(C3a) through the second raised portion H. This starts the movement of the center portion of the fourth edge L4 toward the inside of the package box 10 (see arrow J in fig. 7), that is, the deformation of the center portion dented toward the inside of the package box 10 (see solid arrow J in fig. 7) with the upper corner 11a as the rotation center. Here, in the present embodiment, the fourth edge L4 is provided with the upper third fracture line C3a and the lower third fracture line C3b, respectively, for easy deformation, but the present invention is not limited to this, and only the upper third fracture line C3a may be provided, and the upper third fracture line C3a and the lower third fracture line C3b may not be provided.

(fracture state from crest to end)

Next, as shown in fig. 7, the upper second surface 12a is further rotated to the outside of the package box 10 (see an outlined arrow F in fig. 7). The rotational force F continues to act indirectly on the fourth edge L4, further developing the deformation of the central portion of the fourth edge L4 being concave toward the inside of the package 10 (see solid arrow J in fig. 7). This further deformation toward the inside of the packing box 10 effectively acts from the crest C1a of the approaching first breaking line C1 to the end C1b, and therefore the first breaking line C1 can be cut from the crest C1a to the end C1 b. At this time, as shown in fig. 8, a part or all of the second fracture line C2 can be cut at the same time as the first fracture line C1 is broken. Here, since the deformation of the fourth rim L4 is generated at a position where a gap is formed between the packing box 10 and the article 70 by the pair of second guide score lines R2, the deformation can be allowed to be dented toward the inside of the packing box 10, and the article 70 can be prevented from being damaged by the deformation of the rim.

In the present embodiment, the rotational force F is converted into the shearing force I along the surface of the upper side second surface portion 12a via the second raised portion H generated by the second guide score line R2, and the fourth edge (edge extending in the height direction) L4 is deformed, so that the crest C1a of the approaching first fracture line C1 can be effectively applied to the end portion C1 b. This can solve the second problem (stop of separation in the vicinity of the crest) in patent document 1 described above.

(unsealing state)

As shown in fig. 8, when there is a portion of the second break line C2 that is not cut, the user continues the turning operation, grips the portion bent inward via the gripping score line Rs, and performs a series of lifting operations (see an open arrow K in fig. 8) for lifting the upper second surface portion 12a upward of the package box 10. The raised force K directly acts on the second fracture line C2, and the second fracture line C2 cuts off in order from the second surface 12 side toward the third surface 13 side. The first inner flap 22 is divided into the upper first inner flap portion 22a and the lower first inner flap portion 22b, so that the packaging box 10 is divided into two parts in the vertical direction and is moved to the opened state. As shown in fig. 9, articles 70 are placed in the divided lower half of the packaging box 10 in a stored state. This allows the lower half of the packing box 10 to be used as an article display form usable as a display tray in a shop or the like.

As described above, in the present embodiment, the first and second wavy break lines C1 and C2 can be easily cut by the pair of first guide score lines R1 and the pair of second guide score lines R2 through a series of turning and lifting operations at the opening 40 of the package box 10, and the package box 10 can be opened.

< actions when removing packaging case >

In the divided lower half of the packaging box 10, as shown in fig. 9, a lower third fracture line C3b is provided in each of the pair of fourth edges L4 and the pair of sixth edges L6. In the upper half of the package box 10 thus divided, although not shown, the pair of fourth edges L4 and the pair of sixth edges L6 are similarly provided with the upper third fracture line C3 a. Accordingly, when the package box 10 divided vertically is removed, the upper third breaking line C3a and the lower third breaking line C3b are cut, so that the package box can be stored as recyclable waste without increasing its volume.

In the package box 10 of the present embodiment, in order to facilitate the opening operation of the package box 10 by the user, characters, figures, symbols, or a combination of these marks may be printed on the second face 12, the third face 13, the fifth face 15, the pair of first flap portions 31, and the pair of second flap portions 34, the characters, the figures, the symbols, or the combination of the characters, the figures, the symbols, which indicate the positions of the first fracture line C1 and the second fracture line C2 including the fracture start portion CS. In the package box 10 of the present embodiment, in order to facilitate the user to detach the package box 10, characters, figures, symbols, or a combination of these marks may be printed on the first face 11, the second face 12, the third face 13, the fourth face 14, the pair of first outer wing portions 31, and the pair of second outer wing portions 34, the characters, the figures, the symbols, or the combination of the characters, the figures, the symbols indicating the positions of the upper third break line C3a and the lower third break line C3 b.

The material of the package box 10 and the blank board 10B in the present embodiment is corrugated paper, but is not limited to this, and may be thick paper or plastic, for example.

Claims

1. A packaging box having a substantially rectangular parallelepiped shape,

the packing box is characterized in that,

comprises a rectangular top surface portion, a rectangular bottom surface portion, a pair of length surface portions connecting the long sides of the top surface portion and the bottom surface portion, and a pair of width surface portions connecting the short sides of the top surface portion and the bottom surface portion,

the length surface portion is formed with:

a wave-shaped first fracture line extending in the longitudinal direction and having one valley portion, two peak portions adjacent to the valley portion, and two end portions connected to the width surface portion via a curve gently descending from the two peak portions;

a pair of first guide scribe lines which are located above the first fracture line and which sandwich the trough portion in the longitudinal direction, and which are inclined so that the distance between the first guide scribe lines increases upward; and

a pair of second guide scribe lines which are located above the first break line and close to the corner of the top surface portion, and are inclined so that the interval therebetween widens upward,

a second breaking line extending in the width direction and continuous with the first breaking line is formed on the width surface portion.

2. The packaging case according to claim 1,

the width face portion includes:

a pair of first inner wing portions disposed in connection with one of the length face portions;

a pair of second inner wing portions provided in connection with the other of the length face portions;

a pair of first outer wing portions disposed in connection with the top surface portion; and

a pair of second wing portions disposed in connection with the bottom surface portion,

the first outer wing portion is joined to upper half portions of outer sides of the first and second inner wing portions,

the second outer wing portion is engaged with lower half portions of outer sides of the first and second inner wing portions,

the second fracture line is formed in each of the first inner wing portion and the second inner wing portion at the middle portion in the height direction,

a fracture line is formed at a position above a position at which the first fracture line and the second fracture line are connected, at a rim between the length surface portion and the width surface portion.

3. The packaging box according to claim 1 or 2,

the top surface portion is rectangular and has a first edge and a second edge which are parallel to each other, and a pair of third edges which are orthogonal to the first edge and are parallel to each other,

one of the length face portions is rectangular, has a pair of fourth edges orthogonal to the first edge and parallel to each other, and extends from the first edge and is bent at a right angle,

the other of the length surface portions is rectangular, has a fifth edge parallel to the second edge and a pair of sixth edges orthogonal to the second edge and parallel to each other, extends from the second edge, is bent at a right angle, and faces the one of the length surface portions,

the bottom surface portion is rectangular, has a pair of seventh edges orthogonal to the fifth edges and parallel to each other, extends from the fifth edges, is bent at a right angle, and faces the top surface portion,

the pair of first inner wing parts respectively extend from the pair of fourth edges, are bent at right angles and are opposite to each other,

the pair of second inner wing parts respectively extend from the pair of sixth edges, are bent at right angles and are opposite to each other,

the pair of first outer wing parts respectively extend from the pair of third edges, are bent at right angles and are opposite to each other,

the pair of second outer wing portions extend from the pair of seventh edges, are bent at right angles, and are opposite to each other.

4. The packaging box according to any one of claims 1 to 3,

the first guide scribe line is provided on a line obtained by extending both longitudinal end sides of a fracture initiation portion included in the trough portion of the first fracture line.

5. The packaging case according to claim 4,

the first guide score line is angled in the range of 30 ° to 60 ° relative to a rim between the top face portion and the length face portion.

6. The packaging box according to any one of claims 1 to 5,

the second guide scribe line is provided such that a corner portion of the top surface portion is positioned on a line obtained by extending the second guide scribe line.

7. The packaging case according to claim 6,

the second guide score line is angled in the range of 30 ° to 60 ° relative to the rim between the top face portion and the length face portion.

8. A whiteboard of the packaging box of any one of claims 1 to 7,

the whiteboard is characterized by comprising:

the top surface part is rectangular and is provided with a first bending line and a second bending line which are parallel to each other and a pair of third bending lines which are orthogonal to the first bending line and are parallel to each other;

one of the length surface portions is rectangular, has a pair of fourth bending lines orthogonal to the first bending line and parallel to each other, and is connected to the top surface portion via the first bending line;

the other length surface part is rectangular, has a fifth bending line parallel to the second bending line and a pair of mutually parallel sixth bending lines orthogonal to the second bending line, and is connected with the top surface part through the second bending line;

the bottom surface portion is rectangular, has a pair of mutually parallel seventh bending lines orthogonal to the fifth bending lines, and is connected to the other length surface portion via the fifth bending lines;

a pair of first inner wing portions provided in connection with one of the length face portions via the pair of fourth bending lines, respectively;

a pair of second inner wing portions provided in connection with the other of the length face portions via the pair of sixth bending lines, respectively;

a pair of first outer wing portions respectively connected to the top surface portion via the pair of third bending lines; and

and a pair of second wing portions respectively connected to the bottom surface portion via the pair of seventh bending lines.

9. The whiteboard of claim 8,

the bottom surface portion has an eighth bending line parallel to the fifth bending line,

the whiteboard includes a side surface portion connected to the bottom surface portion via the eighth bend line.

10. The whiteboard according to claim 8 or 9,

in the pair of fourth bend lines and the pair of sixth bend lines, a break line is formed at a position from a corner of the top surface portion to at least a position where the first break line and the second break line are connected.

11. A packaging body is characterized in that,

the package contains an article with the packaging box according to any one of claims 1 to 7.