JP7112925B2 - packaging box - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grooved packaging box that can be opened in a half-tray state when broken.

In Patent Document 1 below, as shown in FIG. 13, an outer flap 53 and an inner flap 54 are extended from a pair of side walls 51 and an end wall 52 that are connected in the circumferential direction via a ridge. A grooved packaging box (so-called A-type corrugated cardboard box) in which outer flaps 53 are successively folded on the top surface to be in a sealed state is described as being unsealed when broken.

This packaging box is provided with horizontal tearing lines 55 of the cut tape extending over the entire circumference of each pair of side walls 51 and end walls 52, two vertical tearing lines 56 extending from one side wall 51 to the outer flap 53, A horizontal breaking line 57 extending over the entire width of one of the outer flaps 53 and a vertical breaking line 58 extending from the tip edge of the pair of inner flaps 54 to the end wall 52 are provided. The vertical break line 56 extends from the horizontal break line 55 of the side wall 51 to the horizontal break line 57 of the outer flap 53 , and the vertical break line 58 extends to the position of the horizontal break line 55 of the end wall 52 .

When the packaging box is to be opened for display of the products contained therein, as shown in FIG. The top surface and front portions of both end surfaces are removed from one side wall 51 to open.

Furthermore, when most of the product is exposed, as shown in FIG. 15, the horizontal breaking line 55 is broken along the entire circumference, and the upper portion is removed to form a half-tray state.

Japanese Patent Application Laid-Open No. 2004-269003

However, as shown in FIG. 15, when the products are displayed in the half-tray state, the packaging box as described above requires a large number of steps for unsealing, which increases the workload at the store.

Moreover, as shown in FIG. 14, there is also a problem that the removed portion cannot be attached and resealed from the state in which the front side is opened.

Therefore, according to the present invention, it is possible to easily perform the unsealing operation in which the half-tray state is wide open for merchandise display, and it is also possible to open only the top surface so that resealing is possible. It is intended to provide a packaging box.

In order to solve the above-mentioned problems, the present invention has an outer flap and an inner flap extending from each pair of side walls and end walls that are connected in the circumferential direction via a ridge, and the inner flap and the outer flap are on the top surface. In a packaging box that is sequentially folded and glued to be in a sealed state,
An inner flap breaking line is inserted in the width direction central part of the pair of inner flaps of the top surface to the boundary with the end wall,
The pair of end walls includes a vertical end wall breaking line extending vertically downward continuously from the inner flap breaking line, and a horizontal end wall breaking line connecting the boundary between the pair of side walls in the horizontal direction, The lower end of the vertical break line of the end wall reaches the horizontal break line of the end wall,
Adopting a configuration in which the pair of side walls includes a side wall transverse breaking line that connects the boundary with the pair of end walls in the transverse direction and is continuous with the end wall transverse breaking line,
When the inner flap breaking line, the vertical breaking line of the end wall, the horizontal breaking line of the end wall and the horizontal breaking line of the side wall are broken, the package is unsealed into a half-tray state with a wide opening.

Further, the end wall horizontal breaking line has a descending portion and an ascending portion which are sequentially arranged in a wavy form from the intersection with the end wall longitudinal breaking line toward the boundary between the pair of side walls, and the half-tray state is achieved. When the package is opened, the vertical breaking line of the end wall and the horizontal breaking line of the end wall are smoothly and continuously broken.

In addition, the side wall transverse break line is composed of a slanted portion extending obliquely downward from the boundary with the pair of end walls and a hinge portion sandwiched between the inclined portions on both sides. The slanted portion of the horizontal breaking line was made to break smoothly and continuously.

In addition, the hinge portion of the side wall transverse break line is alternately intermittent with an arc-shaped cut and a straight cut that swells on the central side, and both ends of the arc-shaped cut are positioned below the straight cut, so that the hinge portion can be easily moved. It was broken so that it could be opened in a half-tray state.

Also, at the center of the tips of the pair of outer flaps on the top surface, there is provided an unsealing start portion positioned between the pair of inner flaps on the top surface during assembly, and a hand is placed on the unsealing start portion. As a result, the outer flap can be easily pulled up at the initial stage of unsealing.

In addition, at the portion of the top surface facing the tip edge of the pair of inner flaps, the breaking resistance of the inner flap breaking line is greater than at other portions, and the outer flaps are opened to open only the top surface. In this case, the inner flap break line is prevented from being broken carelessly.

Specifically, among the joints between the cuts of the inner flap break line, at least one joint positioned at a portion facing the leading edge of the inner flap has a length that is longer than the length of the other portion of the inner flap break line. Assuming that the length of the connecting portion between the cuts is set to be 1.5 times or more longer than the length of the connecting portion, the inner flap breaking line will not be broken unless the push-in portion is pushed.

In addition, two hinge ruled lines sandwiching the inner flap breaking line are formed in the portion facing the tip edge of the pair of inner flaps on the top surface, and the space between the two hinge ruled lines is a push-in portion. When the package is unsealed in the half-tray state, when the push-in portion is pushed in, the hinge ruled line is bent and the inner flap break line is broken.

Further, the pair of outer flaps of the top surface is provided with push-assist ruled lines so that at least a part thereof overlaps with the push-in portion corresponding to the hinge ruled line during assembly or is positioned outside the push-in portion. When opening the package in the half-tray state, if the portion of the outer flap that overlaps the push-in portion is pushed down, the push-in auxiliary ruled line is bent, the push-in portion is pushed in, and the inner flap is broken in the area of the push-in portion. I made it so that the line would be broken.

In addition, a pair of inner flaps on the top surface has a separation cut line for cutting a part of the inner flap around the area bonded to the outer flap, and only the top surface When opening, the periphery of the adhesive part of the inner flap to the outer flap is broken along the separation cut line, and the outer flap is opened while the inner part is stuck to the outer flap. It was designed so that it can be opened without removing the part.

In the packaging box according to the present invention, when the outer flap of the top surface is pulled up, the inner flap breaking line is broken, and then the end wall vertical breaking line, the end wall horizontal breaking line, and the side wall horizontal breaking line are sequentially broken. It can be easily unsealed into an open half-tray state.

In addition, if the breaking resistance of the inner flap breaking line is set to be large at the part facing the tip edge of the inner flap, the breaking resistance of the inner flap breaking line will not be broken at the part where the breaking resistance is large, and the outer flap will be opened and only the top surface will be opened. can be opened and resealed.

FIG. 2 is a rear view of the blank of the packaging box according to the first embodiment of the present invention; The perspective view which shows an assembly sealing state same as the above. The perspective view which shows the unsealing form which opened only the top surface same as the above. The perspective view which shows the initial process of opening to the half tray state same as the above. The perspective view which shows the intermediate process of opening to the half tray state same as the above. The perspective view which shows the unsealing form of the half tray state same as the above. The back side view of the blank of the packaging box which concerns on 2nd Embodiment of this invention. The perspective view which shows an assembly sealing state same as the above. The perspective view which shows the unsealing form which opened only the top surface same as the above. The perspective view which shows the initial process of opening to the half tray state same as the above. The perspective view which shows the intermediate process of opening to the half tray state same as the above. The perspective view which shows the unsealing form of the half tray state same as the above. A perspective view showing an assembled and sealed state of the packaging box described in Patent Document 1. The perspective view which shows the unsealing form which carried out the partial opening same as the above. The perspective view which shows the unsealing form of the half tray state same as the above.

First, a first embodiment of the invention will be described with reference to FIGS. 1 to 6. FIG.

The packaging box is assembled from cardboard blanks as shown in FIG. In this blank, each pair of side walls 1 and end walls 2 are alternately connected in the horizontal direction, outer flaps 3 are connected to the upper and lower sides of the side walls 1, and inner flaps 4 are connected to the upper and lower sides of the end walls 2, respectively. A passage piece 5 is continuously provided on the outer edge of one side wall 1 . Ridge creases 6 and 7 drawn at the boundaries in the horizontal and vertical directions are creases formed by pressing the corrugated cardboard from the back side.

The upper pair of outer flaps 3 are provided with an unsealing start portion 10 that bends as it is pushed in, at the central portion facing the tip edge. The unsealing start portion 10 is divided by bending toward the center so that two fracture lines cut from the tip edge of the outer flap 3 face each other, and a ruled line serving as a hinge is inserted between the ends. be.

Inner flap breaking lines 11 are formed in the upper pair of inner flaps 4 from the center of the tip end to the boundary with the end wall 2 . The inner flap breaking line 11 extends to a position corresponding to between the tips of the outer flaps 3 that are butted together when sealing.

The pair of end walls 2 has a vertical end wall breaking line 12 extending vertically downward continuously from the inner flap breaking line 11, and a single end wall horizontal breaking line 13 connecting the boundary between the pair of side walls 1 in the lateral direction. , and the lower end of the vertical break line 12 of the end wall reaches the horizontal break line 13 of the end wall. Also, the passage piece 5 is also provided with an end wall transverse breaking line 13 .

A pair of side walls 1 are provided with a side wall transverse breaking line 14 continuous to the end wall transverse breaking line 13 so as to extend between both sides, that is, to connect the boundaries with the pair of end walls 2 at the time of assembly in the transverse direction. ing.

Two hinge ruled lines 15, which face the tip edges of the upper pair of inner flaps 4, sandwich the inner flap break line 11 and are inclined so that the tip edge side of the inner flap 4 separates from the inner flap break line 11. The portion between the two hinge ruled lines 15 is a push-in portion 16 (see section A in FIG. 1). The hinge ruled lines 15 are made by pressing the corrugated cardboard from the back side.

The portion of the inner flap break line 11 located within the area of the push-in portion 16 is only a short cut from the leading edge of the inner flap 4, and the portion of the inner flap break line 11 located outside the area of the push-in portion 16 is Except near the boundary between the inner flap 4 and the end wall 2, which is a single straight line, the Y-shaped cut is made into a zipper type that is intermittent through a small connecting portion. Thereby, in the region of the push-in portion 16, the breaking resistance of the inner flap breaking line 11 is greater than that of other portions.

Outside the region of the push-in portion 16, the middle portion of the inner flap 4 sandwiching the inner flap tear line 11 is provided with separation score lines 9, which are mainly zipper-type slits intermittently.

In the upper pair of outer flaps 3 , push-in auxiliary ruled lines 17 are formed on both sides of the opening start portion 10 . The push-in assisting ruled lines 17 correspond to the hinge ruled lines 15 in the assembled state, and partly overlaps the push-in portion 16, and is a combination of push-in ruled lines and curved cut lines.

In the pair of end walls 2, the end wall vertical break lines 12 are formed by intermittent perforation-like cuts, and one side portion of the end wall 2 is divided by the break lines on both sides and the bottom and the mountain-shaped ruled line on the top. A recessed handle hole 18 is provided.

The end wall transverse breaking line 13 has a wavy descending portion 13a and an ascending portion 13b extending from the intersection with the longitudinal end wall breaking line 12 toward the direction of both sides, that is, toward the boundary with the pair of side walls 1 at the time of assembly. , and except near the intersection of the end wall horizontal breaking line 13 and the end wall vertical breaking line 12, the hook-shaped cuts are intermittent zipper type.

In the pair of side walls 1, the side wall transverse break line 14 is formed by a slanted portion 14a extending obliquely downward from both sides, ie, the boundary with the pair of end walls 2, and a single horizontal straight line sandwiched between the slanted portions 14a on both sides. and a hinge portion 14b.

The inclined portion 14a has a zipper shape with intermittent hook-shaped cuts, and the hinge portion 14b has an arcuate cut _14b1 rising at the center and _a linear cut _14b2 alternately intermittent. It is positioned below the incision _14b2 .

When manufacturing a packaging box made up of blanks as described above, the blank is folded and spliced along two of the longitudinal edge creases 7 that are positioned diagonally in the circumferential direction during assembly. A replacement piece 5 is attached to the opposite end wall 2 to keep it in a flat folded state.

When packaging the product, each pair of side walls 1 and end walls 2 are three-dimensionally formed into a rectangular tubular shape, and each lower pair of inner flaps 4 and outer flaps 3 that serve as the bottom surface are sequentially folded and hot-melted. Glue with glue. After that, products such as beverage bottles are stored, and as shown in FIG. 2, each pair of inner flaps 4 and outer flaps 3 that serve as the top surface are folded in order and sealed by adhering them with a hot-melt adhesive.

At this time, the hot-melt adhesive for sealing the top surface is sprayed onto the adhesive portion 8 so that the inner flap 4 is adhered to the outer flap 3 within the region defined by the separating score line 9 .

In the packaging box as described above, the push-in portion 16 is formed at the tip of the inner flap 4 on the top surface so that the inner flap breaking line 11 is more difficult to break than the other portions in that region. You can select an opening form such as

That is, as shown in FIG. 3 , inserting a finger into the gap created by pushing in the opening start portion 10 and pulling up the outer flap 3 on the top surface from the opening start portion 10 without pushing in the push-in portion 16 , push-in portion 16 . Inside the inner flap break line 11, the periphery of the adhesive portion 8 of the inner flap 4 with the outer flap 3 is broken along the separation cut line 9, and the inner side of the separation cut line 9 The inner flap breaking line 11 is broken at the portion of .

The outer flap 3 can be opened and the inner flap 4 can be opened without peeling off the adhesive portion 8 while the inner portion of the separation cut line 9 is stuck to the outer flap 3. Only the top surface can be opened, and it is possible to take out the necessary contents and make it possible to reseal it.

When displaying products in a store, as shown in FIG. 4, when the portion of the outer flap 3 on the top surface that overlaps with the push-in portion 16 is pushed down, the push-in auxiliary ruled line 17 is bent, and the push-in portion 16 is pushed in. The inner flap breaking line 11 is broken from the tip side of the inner flap 4 .

Then, when the unsealing start portion 10 of the outer flap 3 on the top surface is pulled up, the adhesion at the adhesive portion 8 is not peeled off, and the outer flap 3 on the top surface and the inner flap 4 are stuck together. The inner flap breaking line 11 is broken up to the edge ruled line 6. - 特許庁

Subsequently, when the outer flap 3 of the top surface is pulled from the unsealing start portion 10, as shown in FIG. It can be double doors.

At this time, the end wall transverse breaking line 13 has a configuration in which descending portions 13a and ascending portions 13b are successively arranged in a wavy form from the intersection with the end wall longitudinal breaking line 12 toward the boundary with the pair of side walls 1. Therefore, the end wall horizontal breaking line 13 is smoothly continuously broken from the end wall vertical breaking line 12 compared to the case where the end wall horizontal breaking line 13 is a horizontal straight line.

Further, the side wall transverse breaking line 14 is composed of the inclined portions 14a extending obliquely downward from the side of the pair of end walls 2 and the hinge portion 14b sandwiched between the inclined portions 14a on both sides. Along with the rotation of the upper part about the linear cut _14b2 , a force in the breaking direction is efficiently applied to the inclined part 14a, and the inclined part 14a is easily broken.

Then, as shown in FIG. 6, when the hinge portion 14b of the side wall transverse breaking line 14 is broken and the upper portion of the end wall transverse breaking line 13 and the side wall transverse breaking line 14 is removed, the unsealed form of the half-tray state with a wide opening is obtained. As a result, most of the merchandise can be exposed.

At this time, the hinge portion 14b of the side wall transverse breaking line 14 is torn downward from the linear cut _14b2 to the adjacent arcuate cut _14b1 , so that the hinge portion 14b is torn from the linear cut _14b2 to the arcuate cut _14b1 . The joint between the arcuate cut _14b1 and the straight cut _14b2 is hard to be deviated and can be easily broken.

Next, a second embodiment of the invention will be described with reference to FIGS. 7 to 12. FIG.

The packaging box is assembled from cardboard blanks as shown in FIG. In this blank, each pair of side walls 1 and end walls 2 are alternately connected in the horizontal direction, outer flaps 3 are connected to the upper and lower sides of the side walls 1, and inner flaps 4 are connected to the upper and lower sides of the end walls 2, respectively. A passage piece 5 is continuously provided on the outer edge of one side wall 1 . Ridge creases 6 and 7 drawn at the boundaries in the horizontal and vertical directions are creases formed by pressing the corrugated cardboard from the back side.

The upper pair of outer flaps 3 are provided with an unsealing start portion 10 that bends as it is pushed in, at the central portion facing the tip edge. The unsealing start portion 10 is divided by bending toward the center so that two fracture lines cut from the tip edge of the outer flap 3 face each other, and a ruled line serving as a hinge is inserted between the ends. be.

Inner flap breaking lines 11 are formed in the upper pair of inner flaps 4 from the center of the tip end to the boundary with the end wall 2 . The inner flap breaking line 11 extends to a position corresponding to between the tips of the outer flaps 3 that are butted together when sealing.

The pair of end walls 2 has a vertical end wall breaking line 12 extending vertically downward continuously from the inner flap breaking line 11, and a single end wall horizontal breaking line 13 connecting the boundary between the pair of side walls 1 in the lateral direction. , and the lower end of the vertical break line 12 of the end wall reaches the horizontal break line 13 of the end wall. Also, the passage piece 5 is also provided with an end wall transverse breaking line 13 .

A pair of side walls 1 are provided with a side wall transverse breaking line 14 continuous to the end wall transverse breaking line 13 so as to extend between both sides, that is, to connect the boundaries with the pair of end walls 2 at the time of assembly in the transverse direction. ing.

Two hinge ruled lines 15, which face the tip edges of the upper pair of inner flaps 4, sandwich the inner flap break line 11 and are inclined so that the tip edge side of the inner flap 4 separates from the inner flap break line 11. The portion between the two hinge ruled lines 15 is a push-in portion 16 (see section A in FIG. 1). The hinge ruled lines 15 are made by pressing the corrugated cardboard from the back side.

A portion of the inner flap breaking line 11 located within the region of the push-in portion 16 is a perforated line with intermittent straight cuts, and the other portion of the inner flap breaking line 11 is a single straight inner flap. Except for the vicinity of the boundary between 4 and the end wall 2, the Y-shaped cut is intermittent zipper type.

Of the joints between the cuts of the inner flap break line 11, the length α of at least one joint located within the region of the push-in portion 16 is the length of the joints between cuts of other portions of the inner flap break line 11. It is set at least 1.5 times longer than the length β. Thereby, in the region of the push-in portion 16, the breaking resistance of the inner flap breaking line 11 is greater than that of other portions.

In the upper pair of outer flaps 3, on both sides of the opening start part 10, push-in auxiliary ruled lines 17 with reduced bending resistance are inserted. The auxiliary push-in ruled line 17 overlaps the hinge ruled line 15 in the assembled state, or is inclined along the hinge ruled line 15 so as to be positioned slightly outside the push-in portion 16, and is formed by pressing the corrugated cardboard from the back side.

At the boundary between the upper pair of inner flaps 4 and the end wall 2, the portion including the intersection point B between the inner flap break line 11 and the edge ruled line 6 of the end wall longitudinal break line 12 extends in the thickness direction of the corrugated cardboard material. It is considered as a penetrating all-cut line.

In the pair of end walls 2, the end wall longitudinal breaking line 12 is composed of intermittent cuts, and some of the cuts are Y-shaped. A handle hole 18 is provided at an intermediate portion of the vertical break line 12 of the end wall and is divided by the break lines on both sides and the bottom and the ruled line on the top. The handle hole 18 has a shape in which the central portion in the width direction through which the end wall vertical break line 12 passes extends long downward.

The end wall transverse breaking line 13 has a wavy descending portion 13a and an ascending portion 13b extending from the intersection with the longitudinal end wall breaking line 12 toward the direction of both sides, that is, toward the boundary with the pair of side walls 1 at the time of assembly. , and except near the intersection of the end wall horizontal breaking line 13 and the end wall vertical breaking line 12, the hook-shaped cuts are intermittent zipper type.

In the pair of side walls 1, the side wall transverse break line 14 is formed by a slanted portion 14a extending obliquely downward from both sides, ie, the boundary with the pair of end walls 2, and a single horizontal straight line sandwiched between the slanted portions 14a on both sides. and a hinge portion 14b. The inclined portion 14a is of a zipper type with intermittent hook-shaped cuts, and the hinge portion 14b is intermittent with cuts and creases.

When manufacturing a packaging box made up of blanks as described above, the blank is folded and spliced along two of the longitudinal edge creases 7 that are positioned diagonally in the circumferential direction during assembly. A replacement piece 5 is attached to the opposite end wall 2 to keep it in a flat folded state.

When packaging the product, each pair of side walls 1 and end walls 2 are three-dimensionally formed into a rectangular tubular shape, and each lower pair of inner flaps 4 and outer flaps 3 that serve as the bottom surface are sequentially folded and hot-melted. Glue with glue. After that, a product such as a drink bottle is stored, and as shown in FIG. 8, each pair of inner flaps 4 and outer flaps 3 serving as the top surface is folded in order and sealed by adhering with a hot-melt adhesive.

At this time, the hot melt adhesive for sealing the top surface is sprayed onto the adhesive portion 8 near the edge of the top surface near the inner flap break line 11 so that the outer flap 3 does not roll up during transportation of the packaging box. is preferred.

In the packaging box as described above, the push-in portion 16 is formed at the tip of the inner flap 4 on the top surface so that the inner flap breaking line 11 is more difficult to break than the other portions in that region. You can select an opening form such as

That is, as shown in FIG. 9, inserting a finger into the gap generated by pushing the opening start portion 10 and pulling up the outer flap 3 on the top surface from the opening start portion 10 without pushing the push-in portion 16, the inner flap breaks. The bond at the bond 8 is torn off without breaking the wire 11 .

As a result, the outer flap 3 and the inner flap 4 can be opened, and only the top surface can be opened, so that necessary contents can be taken out and the package can be resealed.

When displaying products in a store, as shown in FIG. 10, when the portion of the outer flap 3 on the top surface that overlaps with the push-in portion 16 is pushed down, the push-in auxiliary ruled line 17 is bent, and the push-in portion 16 is pushed in. The inner flap tear line 11 in the region of the indentation 16 is torn.

Then, when the unsealing start portion 10 of the outer flap 3 on the top surface is pulled up, the adhesion at the adhesive portion 8 is not peeled off, and the outer flap 3 on the top surface and the inner flap 4 are stuck together. The inner flap breaking line 11 is broken up to the edge ruled line 6. - 特許庁

Subsequently, when the outer flap 3 on the top surface is pulled from the unsealing start portion 10, as shown in FIG. It can be double doors.

At this time, at the boundary between the inner flap 4 and the end wall 2 on the top surface, the connecting portion of the inner flap break line 11 and the end wall vertical break line 12 is a full cut line at the portion where it intersects the ridge ruled line 6. The end wall longitudinal breaking line 12 is continuously broken without breaking from the flap breaking line 11.例文帳に追加

Furthermore, since the pair of end walls 2 are provided with the handle hole 18 in the intermediate portion of the end wall vertical break line 12, there is no need to break the end wall vertical break line 12 at the portion of the handle hole 18. The load when the end wall vertical breaking line 12 breaks is reduced.

The end wall transverse breaking line 13 is configured such that descending portions 13a and ascending portions 13b are successively arranged in a wavy form from the intersection with the end wall longitudinal breaking line 12 toward the boundary with the pair of side walls 1. Therefore, the end wall horizontal breaking line 13 can be broken smoothly continuously from the end wall vertical breaking line 12 as compared with the case where the end wall horizontal breaking line 13 is a horizontal straight line.

Further, the side wall transverse break line 14 is composed of the inclined portions 14a extending obliquely downward from the pair of end walls 2 and the hinge portions 14b sandwiched between the inclined portions 14a on both sides. As the upper portion of the shaft rotates, a force in the breaking direction is efficiently applied to the inclined portion 14a, and the inclined portion 14a is easily broken.

Then, as shown in FIG. 12, when the hinge portion 14b of the side wall transverse breaking line 14 is broken and the upper portion of the end wall transverse breaking line 13 and the side wall transverse breaking line 14 is removed, the unsealed form of the half-tray state with a wide opening is obtained. As a result, most of the merchandise can be exposed.

In the above-described first and second embodiments, in the sealed state shown in FIGS. 2 and 8, the tips of the outer flaps 3 on the top surface are butted against each other, and the normal grooved cardboard box is sealed without gaps. As illustrated, the extension length of the outer flap 3 on the top surface from the end wall 2 is short, and even if the outer flap 3 on the top surface is closed, a gap is opened between the tips of the outer flap 3. A similar unsealing structure can also be adopted for the type packaging box.

1 Side wall 2 End wall 3 Outer flap 4 Inner flap 5 Succession piece 6, 7 Edge ruled line 8 Bonded part 9 Separation cut line 10 Opening start part 11 Inner flap break line 12 End wall vertical break line B Intersection 13 End wall horizontal Breaking line 13a Descending portion 13b Rising portion 14 Side wall transverse breaking line 14a Inclined portion 14b Hinge portion 14b ₁ arcuate cut 14b ₂ straight cuts 15 Hinge ruled line 16 Push-in portion 17 Push-in auxiliary ruled line 18 Handle hole

Claims (9)

Outer flaps (3) and inner flaps (4) extend from each pair of side walls (1) and end walls (2) that are circumferentially connected via ridges. In the packaging box where (3) is sequentially folded and glued on the top surface to be in a sealed state,
At the center of the pair of inner flaps (4) in the width direction of the top surface, there is provided a pair of end walls (2) so as to extend to a position corresponding to the tip of the outer flaps (3) that abut against each other at the time of sealing . An inner flap break line (11) is inserted to the boundary,
In the pair of end walls (2), the boundary between the pair of side walls (1) and the end wall longitudinal breaking line (12) extending vertically downward continuously from the inner flap breaking line (11) is laterally extended. and the end wall vertical breaking line (13) is inserted, and the lower end of the end wall vertical breaking line (12) reaches the end wall horizontal breaking line (13),
The end wall horizontal breaking line (13) has a descending portion (13a) and a rising portion (13b) from the intersection with the end wall vertical breaking line (12) toward the boundary with the pair of side walls (1). are arranged sequentially in a wavy pattern,
The pair of side walls (1) are provided with side wall transverse breaking lines (14) that connect the boundaries with the pair of end walls (2) in the transverse direction and continue to the end wall transverse breaking lines (13). A packaging box characterized by: Outer flaps (3) and inner flaps (4) extend from each pair of side walls (1) and end walls (2) that are circumferentially connected via ridges, respectively. In the packaging box where (3) is sequentially folded and glued on the top surface to be in a sealed state,
At the center of the pair of inner flaps (4) in the width direction of the top surface, there is provided a gap between the end walls (2) so as to extend to a position corresponding to the tips of the outer flaps (3) that abut against each other when sealing . An inner flap break line (11) is inserted to the boundary,
In the pair of end walls (2), the boundary between the pair of side walls (1) and the end wall vertical breaking line (12) extending vertically downward continuously from the inner flap breaking line (11) is laterally extended. and the end wall vertical breaking line (13) is inserted, and the lower end of the end wall vertical breaking line (12) reaches the end wall horizontal breaking line (13),
The pair of side walls (1) is provided with a side wall transverse breaking line (14) that connects the boundary with the pair of end walls (2) in the transverse direction and is continuous with the end wall transverse breaking line (13) ,
The side wall transverse breaking line (14) is defined by a slant portion (14a) extending obliquely downward from the boundary with the pair of end walls (2) and a hinge portion (14b) sandwiched between the slant portions (14a) on both sides. A packaging box characterized in that it consists of The hinge portion (14b) of the side wall transverse breaking line (14) has an arc-shaped cut (14b ₁ ) rising at the center and a straight cut (14b ₂ ) alternately intermittent, and both ends of the arc-shaped cut (14b ₁ ) are _3. A packaging box according to claim 2 , characterized in that it is located below the rectilinear cut (14b2). An opening start portion (10) positioned between the pair of inner flaps (4) of the top surface during assembly is provided at the center of the tip of the pair of outer flaps (3) of the top surface. The packaging box according to any one of claims 1 to 3 . Claims 1 to 4 , characterized in that, in the portion of the top surface facing the leading edge of the pair of inner flaps (4), the breaking resistance of the inner flap breaking line (11) is greater than that of other portions. The packaging box according to any one of Of the joints between the cuts of the inner flap break line (11), at least one joint located at the portion facing the tip edge of the inner flap (4) has a length equal to the length of the inner flap break line (11). 6. The packaging box according to claim 5 , wherein the length of the joint between the cuts of the other portion is set to be 1.5 times or more longer. Two hinge ruled lines (15) sandwiching the inner flap breaking line (11) are drawn in the portion facing the tip edge of the pair of inner flaps (4) on the top surface, and the two hinge ruled lines ( 7. The packaging box according to any one of claims 1 to 6 , characterized in that the space between 15) is a push-in portion (16). At least a portion of the pair of outer flaps (3) on the top surface overlaps with the push-in portion (16) corresponding to the hinge ruled line (15) at the time of assembly, or is positioned outside the push-in portion (16). 8. A packaging box according to claim 7 , characterized in that it is provided with push-in auxiliary creases (17) so as to be positioned. A pair of inner flaps (4) on the top surface has separation cut lines (9) for cutting off a part of the inner flaps (4) around the area bonded to the outer flaps (3). 9. The packaging box according to any one of claims 1 to 8 , characterized in that it is enclosed.

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