JP7252595B2 - packaging box structure - Google Patents

Description

The present invention relates to a packaging box structure such as a cardboard box.

2. Description of the Related Art Conventionally, as garbage bags designated by local governments, there is a roll-shaped bag body in which a continuous belt-like bag body in which a plurality of bag bodies are connected in series via cut broken lines is wound into a roll. As a packaging structure for such a roll-shaped bag, there is a structure in which the entire roll-shaped bag is wrapped with a special packaging bag. Also known is one using a paper-made packaging sheet formed in a narrow belt shape. Such a packaging sheet wraps the roll-shaped bag body in a state of being wound around the outer periphery of the roll-shaped bag body having a cylindrical outer shape.

Such a packaging sheet has a sheet length that can be wrapped around the outer periphery of the roll-shaped bag body for at least one turn, the ends of the sheet are overlapped, and the portions are fixed with adhesive glue, adhesive tape, or the like. There is a configuration to attach. According to such a configuration, when the packaging sheet is fixed, the packaging sheet is directly adhered to the roll-shaped bag, so that the roll-shaped bag can be prevented from being soiled or torn.

A plurality of roll-shaped bag bodies configured in this way are accommodated in one packaging box and transported to a predetermined location. When this roll-shaped bag is housed in a packaging box as a content (contents), the roll-shaped bag is inserted into the housing space of the packaging box so that a plurality of roll-shaped bags are inserted into the housing space. Packed from end to end. In addition, when stacking packaging boxes containing a plurality of roll-shaped bags, the axial direction of the roll-shaped bags is the vertical direction in order to avoid crushing of the packaging boxes due to the load applied to the packaging boxes during transportation. The packaging boxes are stacked in such a way that

In the work of stuffing the roll-shaped bag body into such a packaging box, for example, as shown in FIG. When an attempt is made to store the roll-shaped bag body G, there is a risk that the packaging sheet S surrounding the roll-shaped bag body G may get caught on the end of the stored roll-shaped bag body G and be damaged. In particular, since the position of the roll-shaped bag body G becomes unstable, the wrapping sheet S is more likely to be caught than in the case of manual packing by an operator (person). Therefore, the work of storing the roll-shaped bag body G has been carried out as a manual work by a person under the utmost care so as not to damage the packaging sheet.

Techniques related to packaging boxes are described in Patent Literatures 1 and 2, for example.

Patent Document 1 describes a configuration in which perforated cutting lines are formed from the corners of a substantially rectangular opening formed on the top surface of a packaging box to the corners of the packaging box. A configuration is described in which the top surface of the packaging box can be easily opened by cutting the packaging box along the cutting line.

Patent Document 2 describes a paper storage box in which an opening is formed approximately in the center of the top panel, and cut lines are formed from the opening toward the four corners of the packaging box. A configuration is described in which the storage box can be easily opened by cutting the storage box along the perforations.

JP 2016-210465 A JP 2005-104549 A

However, none of the packaging boxes disclosed in any of the documents takes into consideration the storability of the contents in the packaging box and the transportability in a state where the contents are packed, for example, when automating the work of accommodating the contents. do not have.

On the other hand, a blank sheet for a cardboard box as a packaging box is formed by a die-cutting machine. In order to form perforated cutting lines on the cardboard box, a wooden pattern with a perforating blade is used. Conventionally, when blank sheets of different sizes were used, it was necessary to prepare wooden patterns for each size.

Therefore, according to the present invention, it is possible to easily unseal and take out the contents, and to improve the accommodation capacity of the contents and the transportability in a state where the contents are packed. To provide a packaging box structure in which a wooden pattern for forming a can be shared.

The present invention comprises top and bottom outer flaps disposed above and below a front plate and a rear plate of a packaging box via ruled lines, top and bottom inner flaps disposed above and below a left side plate and right side plate via ruled lines, front and rear plates, and In a rectangular parallelepiped packaging box composed of joints arranged on either of left and right side plates via ruled lines, a first cut line formed in a rectangular shape as an unsealing means on the front plate, and the first cut line The packaging box structure is characterized by comprising: a plurality of second cut lines formed in a straight line from a corner of a rectangular shape formed by one cut line toward a corner of the front plate.

Further, the packaging box structure is characterized in that the front panel is provided with a third cut line formed so as to surround the corner of the first cut line from the outside.

Further, the third cut line is formed in a substantially arc shape so as to surround the corner of the first cut line from the outside, and the second cut line is the third cut line of the front plate. 3. The packaging box structure according to claim 2, wherein the packaging box structure is provided so as to communicate with the .

According to the invention of claim 1, the upper and lower outer flaps are arranged above and below the front plate and the rear plate of the packaging box via ruled lines,
A rectangular parallelepiped packaging box composed of upper and lower inner flaps arranged on the upper and lower sides of the left side plate and the right side plate via ruled lines, and joints arranged on either the front and rear plates or the left and right side plates through ruled lines. , as an unsealing means on the front plate, a first cut line formed in a rectangular shape and a rectangular shape formed by the first cut line so as to follow the direction of the diagonal line of the rectangular shape formed by the first cut line a second cut line formed so as to extend outward in an inclined manner from each corner; When the packaging box is transported, a packaging box form having a predetermined strength can be realized, and the front plate can be easily opened completely without changing the orientation of the packaging box after the packaging box is transported.
Further, the second cut line is formed so as to extend outward in an inclined manner from the corner of the first cut line, and the second cut line is formed by a plurality of parallel straight lines , so that the packaging box can be Either of the second cut lines functions as a shear auxiliary line directed to the corner of the front plate regardless of the size of the front plate, and the front plate can be easily opened.
In addition, due to the configuration in which the second cut lines are formed by a plurality of parallel straight lines , even if the second cut lines are formed in the same form on large and small boxes with different sizes, either cut line can easily open the front plate toward the corners of the front plate, and the wooden pattern for forming the cut lines can be shared.

Further, according to the invention of claim 2, the front plate is provided with a third cut line formed so as to surround the corner of the first cut line from the outside. The procedure for fully opening the front plate can be selected from any of the first, second, and third cut lines, increasing the degree of freedom in the procedure for fully opening the front panel. can be done.
Also, when opening the front plate, the opening is formed starting from the third cut line with the smallest area, and then the end piece formed by cutting along the first cut line is removed. An opening is formed in the center of the front plate, and the remaining end pieces are cut at the second cut line extending from the corner of the opening toward the corner of the front plate, so that the front plate can be easily Can be left open. In addition, since the end piece with the largest area is removed in order from the third cut line with the smallest area, the front panel of the packaging box can be efficiently opened.

Further, according to the third aspect of the invention, the third cut line is formed in a substantially arc shape so as to surround the corner of the first cut line from the outside, and the second cut line is provided so as to communicate with the third cut line of the front plate, the same force is applied regardless of which part of the third cut line is pressed, and the opening can be easily formed.

It is a figure which shows the state which expanded the packaging box in embodiment of this invention. It is a perspective view which shows the assembly state of the packaging box in embodiment of this invention. It is a front view which shows a front plate at the time of assembling the packaging box in embodiment of this invention. FIG. 11 is a perspective view showing another embodiment of third cut lines provided on the front plate of the packaging box in the embodiment of the present invention; It is a front view which shows the front plate which shows other embodiment of the 3rd cut line provided in the front plate of the packaging box in embodiment of this invention. It is a perspective view which shows the form of the size difference of the packaging box in embodiment of this invention. FIG. 11 is a perspective view showing another embodiment showing the third cut line in the assembled state of the packaging box according to the embodiment of the present invention; It is a figure which shows the state which expanded the packaging box in other Example of this invention. 1 is a perspective view showing a state in which a robot arm is used to pack a roll-shaped bag surrounded by a packaging sheet in a packaging box according to an embodiment of the present invention; FIG. FIG. 4 is a perspective view showing the first step when opening the front plate of the packaging box in the embodiment of the present invention; FIG. 4 is a perspective view showing a second step when opening the front plate of the packaging box in the embodiment of the present invention; FIG. 10 is a perspective view showing a state in which the end piece is removed by the cut line in the second step when opening the front panel of the packaging box in the embodiment of the present invention; FIG. 11 is a perspective view showing a third step when opening the front plate of the packaging box in the embodiment of the present invention; FIG. 11 is a perspective view showing a state in which the front plate is completely opened in a third step when opening the front plate of the packaging box according to the embodiment of the present invention; FIG. 10 is a perspective view showing a problem in packaging a roll-shaped bag surrounding a packaging sheet in a conventional packaging box.

The present invention comprises upper and lower outer flaps arranged above and below the front plate and the rear plate of the packaging box via ruled lines, upper and lower inner flaps arranged above and below the left side plate and the right side plate through ruled lines, front and rear plates, and A rectangular parallelepiped packaging box composed of joints arranged on either of left and right side plates via a ruled line, wherein a first cut line formed in a rectangular shape as an unsealing means on the front plate; A plurality of second cut lines are formed linearly from the corner of the first cut line toward the front, back, left and right corners of the front plate, and approximately halfway at the corner of the first cut line. The gist is that a circular third cut line is provided.

Embodiments of the present invention will be described in detail with reference to FIGS. 1-14.
FIG. 1 shows one sheet-like blank sheet B before assembling the packaging box 100 in the embodiment of the present invention. That is, the blank sheet B is in a state in which the packaging box 100 is unfolded.

As shown in FIG. 1, the packaging box 100 is arranged via the front and rear plates 10, 40, the left and right side plates 20, 30, and the upper and lower ruled lines L6, L8, L10, L12 of the front and rear plates 10, 40. Upper and outer flaps 11, 41, lower outer flaps 12, 42, upper and lower flaps 21, 41 and lower inner flaps 21, 41 arranged above and below the left and right side plates 20, 30 via respective ruled lines L5, L7, L9, L11. It is composed of flaps 22 and 32 and a joint allowance 50 extending from the left side of the left side plate 20.例文帳に追加

As shown in FIGS. 1 and 2, the packaging box 100 is made by mountain-folding or valley-folding a blank sheet B obtained by cutting out one cardboard sheet according to the ruled lines L1 to L12. The joint allowance 50 provided at the end and the flaps 11, 21, 31, 41, 12, 22, 32, 42 are fixed in a box shape with an adhesive or the like.
The blank sheet B shown in FIG. 1 is illustrated so that the outer surface of the packaging box 100 (100A) can be seen when the packaging box 100 (100A) of FIG. 2 is used.

As shown in FIG. 1, the front plate 10 has a rectangular shape with the left-right direction as the longitudinal direction. Upper and outer flaps 11 are connected to the upper side of the front panel 10 via a ruled line L6, and lower outer flaps 12 are connected to the lower side of the front panel 10 via a ruled line L10. The upper and lower outer flaps 11 and 12 are flaps that are outside when the packaging box 100 is assembled into a box shape. A left side plate 20 is connected to the left side of the front plate 10 via a ruled line L2, and a right side plate 30 is connected to the right side of the front plate 10 via a ruled line L3.

A substantially rectangular first cut line 13 having a shape substantially similar to that of the front plate 10 is formed at substantially the center of the front plate 10 . The first cut line 13 is a rectangular perforation. Of the four corners R5, R6, R7, R8 of the first cut line 13, the upper right and upper left corners R6, R7 are perforated and substantially semicircular third cut lines 14 are formed. are doing. The 3rd cut line 14 is formed so that the rectangular-shaped corner part by the 1st cut line 13 may be surrounded from the outer side in circular arc shape. Therefore, according to the third cut line 14, along with the right-angled bend line at the corner of the first cut line 13, the arc-shaped third cut line 14 surrounded by these cut lines As the portion, a substantially fan-shaped portion having a central angle of approximately 270° is formed. That is, the front plate 10 has a rectangular portion inside the first cut line 13 and a rectangular portion of the first cut line 13 as a region portion partitioned by the first cut line 13 and the third cut line 14. It has an outer frame-shaped portion and the substantially fan-shaped portion included in the frame-shaped portion.

Outside each corner of the four corners R5, R6, R7 and R8 of the first cut line 13, there are perforated straight lines extending toward the corners R1, R2, R3 and R4 of the front panel 10. Three second cut lines C1, C2, and C3 are formed. The second cut lines C1, C2, and C3 extend obliquely outward from the corners of the rectangular shape along the diagonal direction of the rectangular shape formed by the first cut lines 13. formed. In the present embodiment, as shown in FIG. 2, the second cut line C1 is straight from each corner R5, R6, R7, R8 of the first cut line 13 with respect to each corner R1 to R4 of the front plate 10. formed in the shape of

The three second cut lines C<b>1 , C<b>2 , C<b>3 are formed parallel to straight lines connecting the corners of the first cut line 13 and the vertices of the corners of the front plate 10 . In the drawing of the front plate 10 of FIG. It is located on a straight line connecting the corner vertices of the front plate 10 . The other two second cut lines C2 and C3 have approximately the same spacing with respect to the center second cut line C1, and are provided line symmetrically about the second cut line C1 as the center line.

Of the three second cut lines C1, C2, C3 formed at four locations near the four corners of the front plate 10, the upper left and right of the first cut line 13 where the third cut line 14 is not formed The three second cut lines C1, C2, C3 formed outside the lower corners R5, R8 are similar in relation to the corners of the first cut line 13 and the corners of the front plate 10. provided in a manner. Specifically, in the present embodiment, the three second cut lines C1, C2, and C3 are provided so as to connect one end side to the first cut line 13 outside the corners R5 and R8. there is Specifically, on the outside of the corners R5 and R8, the central second cut line C1 of the three second cut lines C1, C2, and C3 has the other end side of the first cut line 13. The other two second cut lines C2 and C3 connect the other end side to the side near the vertex of the first cut line 13 .

In addition, among the three second cut lines C1, C2, and C3 formed at four locations near the four corners of the front plate 10, the upper right of the first cut line 13 where the third cut line 14 is formed and the The three second cut lines C1, C2, C3 formed outside the lower left corners R6, R7 are provided in a similar manner in relation to the third cut line 14 and the corners of the front plate 10. It is Specifically, in the present embodiment, the three second cut lines C1, C2, and C3 are provided so as to connect one end side to the third cut line 14 outside the corners R6 and R7. there is

Thus, one end side of each of the second cut lines C1, C2, C3 (hereinafter referred to as "base end side") is connected to the peripheral edge of the first cut line 13 and the third cut line 14. there is On the other hand, the other end side of each of the second cut lines C1, C2, C3 (hereinafter referred to as "front end side") is connected to the edge of the front plate 10 forming each corner R5, R6, R7, R8. However, gaps G1 to G4 are provided between the tips of the second cut lines C1, C2, and C3 and the edge of the front plate 10. As shown in FIG.

By providing the gaps G1 to G4, even when a plurality of packaging boxes 100 are stacked using the front plate 10 as the top surface, the ruled lines L5, L7, L9, and L11 can be bent from the corners R1 to R4 of the front plate 10. The load is transmitted in the axial direction of the ridges formed by the ridges, and the probability of the packaging box 100 being crushed is reduced as much as possible. That is, since the gaps G1 to G4 where the second cut lines C1, C2, and C3 are not formed exist, the gaps become blank portions where the second cut lines C1, C2, and C3 are interrupted. and the ridge line portions along the ruled lines L5, L7, L9, and L11 function as columnar portions with relatively high rigidity. As a result, when the front plate 10 is used as the top surface, the columnar portion reinforces the packaging box 100 (100A), thereby improving the load resistance of the packaging box 100 (100A) in the vertical direction.
In the present embodiment, the third cut line 14 is provided toward the outside of the corners R6 and R7 of the first cut line 13, but the third cut line 14 is formed at R6 and R7 , and the third cut line 14 may be formed by selecting any one, two, or three locations from the corners R5, R6, R7, and R8, or the corners R5, It is good also as a structure which formed the 3rd cut line 14 in all four places of R6, R7, and R8.

In addition, as shown in FIG. 4, the first cut line 13 is an oblique cut that connects two adjacent sides of the sides that make up the first cut line 13 inside each of the corners R1 to R4 in an oblique line. Lines CL5a, CL6a, CL7a, and CL8a are formed, and the first cut line 13 is approximately octagonal in front view, and corners R5a, R5b, R6a, R6b, R7a, R7b, R8a, Sides CL5b, CL5c, CL6b, CL6c, CL7b, CL7c, CL8b, and CL8c may be extended from R8b to the outside of the first cut line 13 to form a third cut line 14 having a substantially triangular shape when viewed from the front. good. That is, in the configuration shown in FIGS. 4 and 5, oblique cut lines CL5a, CL6a, CL7a, and CL8a are formed at the corners R5, R6, R7, and R8 of the first cut line 13 having a rectangular shape. A chamfered rectangular shape is formed by the upper, lower, left, and right sides of the first cut line 13 and the diagonal cutting lines CL5a, CL6a, CL7a, and CL8a, and the diagonal cutting line CL5a is formed along the upper, lower, left, and right sides of the first cut line 13. , CL6a, CL7a, and CL8a, sides CL5b, CL5c, CL6b, CL6c, CL7b, CL7c, CL8b, and CL8c are extended outside the sides CL6a, CL7a, and CL8a. As a result, the diagonal cutting lines CL5a, CL6a, CL7a, and CL8a and the sides CL5b, CL5c, CL6b, CL6c, CL7b, CL7c, CL8b, and CL8c extending from both sides of the diagonal cutting lines CL5a, CL6a, CL7a, and CL8a, At the four corners of the first cut line 13, substantially triangular area portions are defined.

The third cut line 14, which has a substantially triangular shape when viewed from the front, is configured such that the sides CL5b and CL5c of the substantially triangular shape when viewed from the front are not connected to each other at the remaining vertexes excluding the corners R5a and 5b. It is According to such a configuration, when the front plate 10 is fully opened and the substantially octagonal end pieces are removed along the first cut lines 13, the third cuts are made along the second cut lines C1, C2 and C3. The substantially triangular portion formed by the lead wire 14 remains connected. After that, the remaining substantially triangular portion functions as a tab when opening the second cut lines C1, C2, C3, and can facilitate opening of the second cut lines C1, C2, C3.

In addition, the third cut line 14 is formed not only at the corners R5, R6, R7, and R8 of the first cut line 13, but also forms the first cut line 13 which is substantially rectangular in front view. It may be provided on any of each side, and the formed perforation shape is formed in a substantially circular shape so as to straddle the side of the first cut line 13, inside the first cut line 13, It may be formed only on the outer side, and it may be configured in any form as long as the perforation shape of the third cut line 14 is formed so as to be connected to the first cut line 13. good.

In addition, the perforation-like cut lines 13, 14, C1, C2, and C3 formed on the front plate 10 exhibit the same effect when the aspect ratio of the packaging box 100 changes, and the front plate 10 can be fully opened easily. That is, each of the cut lines 13, 14, C1, C2, and C3 is connected to one of the perforated cut lines to prevent breakage at portions other than the cut lines, and furthermore, the second By forming a plurality of cut lines C1, C2, and C3, the leading end of any one of the formed second cut lines C1, C2, and C3 faces the corner of the packaging box 100 (100B). Become.

At this time, among the three second cut lines C1, C2, and C3, the second cut line C1 is the right-angled portion of the front plate 10, that is, each of the corners R1 to R4 in FIGS. However, in the packaging box 100 (100B) shown in FIG.
By configuring the cutting line with a plurality of second cut lines C1, C2, C3 in this way, any of the second cut lines C1, C2, C3 can be directed to the corners R1 to R4 of the front plate 10. Thus, it can function as a cutting guide when the front plate 10 is fully opened.
In addition, although the second cut lines C1, C2, and C3 are configured to be three straight lines in the present embodiment, the number of the second cut lines C1, C2, and C3 is not limited to this number. It suffices if it is composed of a plurality of the above. By providing a plurality of the second cut lines C1, C2, and C3 in this way, the cut lines can be positioned at the corners R5, R6, and R7 of the first cut line 13 regardless of the size of the packaging box 100. , R8 can be formed in a straight line at the corner of the front plate 10 which is fully open. In addition, although the second cut lines C1, C2, and C3 are described as being substantially parallel, they are not particularly limited to the parallel state, and are formed radially around the corners of the first cut lines 13. It may be formed so as to be gathered at the corner of the packaging box 100, and a plurality of the first cut lines 13 are configured to extend to the corner of the front plate 10 with the vicinity of the corner of the first cut line 13 as the base end. Anything is fine.
In the above-described embodiment, the second cut lines C1, C2, C3 are formed outside the third cut line 14, but the second cut lines C1, C2, C3 It may be formed up to the inner side of the lead-in line 14 . Specifically, in the example shown in FIG. 7, the three second cut lines C1, C2, and C3 formed at four locations near the four corners of the front plate 10 are aligned with the corners of the first cut line 13. It is provided in a similar manner in relation to the corners of front plate 10 . In other words, the four second cut lines C1, C2, C3 formed by a set of three are provided substantially vertically and horizontally symmetrically. Outside the upper right and lower left corners R6 and R7 of the first cut line 13, the three second cut lines C1, C2, and C3 are all formed to cross the third cut line 14. ing. That is, the three second cut lines C1, C2, C3 are formed over the inside and outside of the substantially semicircular region of the third cut line 14. As shown in FIG. Therefore, it is formed so as to traverse the substantially fan-shaped portion defined by the bend line at the corner of the first cut line 13 and the third cut line 14 .

As shown in FIG. 1, the left side plate 20 has a substantially rectangular shape when viewed from the front. A ruled line L5 that forms the upper side of the left side plate 20 and a ruled line L9 that forms the lower side of the left side plate 20 define a substantially rectangular upper inner flap 21 and a lower inner flap 22 positioned inside when the blank sheet B is assembled into the packaging box 100. They are connected vertically. In addition, a joint allowance 50 having a substantially rectangular shape in a plan view is continuously provided on the rear side of the left side plate 20 via a ruled line L1.

As shown in FIG. 1, the right side plate 30 has a shape substantially the same as that of the left side plate 20, and has an upper inner flap 31 and a lower inner flap 32 connected to the ruled line L7 and the ruled line L11, respectively. A rear plate 40 is connected to the right side of the right side plate 30 via a ruled line L4.

As shown in FIG. 1, the rear plate 40 has a shape substantially equivalent to that of the front plate 10 in a plan view, and has an upper outer flap 41 and a lower outer flap 42 on ruled lines L8 and L12 that form the upper and lower sides of the rear plate 40, respectively. are connected.
In this embodiment, the rear plate 40 is configured without the first cut line 13, the third cut line 14, and the second cut lines C1, C2, C3 provided on the front plate 10. is not limited to this configuration, and a configuration in which the cut lines 13, 14, C1, C2, and C3 are provided on the rear plate 40 may be employed.

As shown in FIG. 1, the joint allowance 50 has a substantially rectangular shape in a plan view and is connected to the left side plate 20 via a ruled line L1. When the blank sheet B is assembled into a substantially box shape, a rectangular tube can be formed by fixing the joint margin 50 to the vicinity of the right side of the rear panel 40 with an adhesive.
As shown in FIG. 1, the joint allowance 50 has a substantially rectangular shape in a plan view, but it may be of any shape as long as the left side plate 20 and the rear plate 40 can be fixed. Either a circular shape or an elliptical shape may be used.

<Second embodiment>
Next, a description will be given of a second embodiment in which the blank sheet B forming the packaging box is changed from the laterally elongated form to the vertically elongated form as described above. The same reference numerals are assigned to the same configurations as in the first embodiment, and the description thereof will be omitted as appropriate.

The packaging box 200 includes front and rear plates 10 and 40, a left side plate 20 connected to the left side of the front plate 10, a right side plate 30 connected to the right side of the front plate 10, and between the front plate 10 and the rear plate 40. It is composed of a bottom plate 60 positioned, a joint allowance 50a provided continuously via the ruled line L1a of the left side plate 20, and a joint allowance 50b provided continuously via the ruled line L1b of the right side plate 30.

As shown in FIG. 8, the front plate 10 has a substantially rectangular shape in a plan view, and has left and right side plates 20 and 30 connected via ruled lines L2a and L3a on the left and right sides. The upper side of the front plate 10 is connected to the upper and outer flaps 11a via a ruled line L6a, and the lower side is connected to the bottom plate 60 via a ruled line L10a.

As shown in FIG. 8, the bottom plate 60 has a substantially rectangular shape in a plan view, with the ruled line L6a on the upper side being connected to the front plate 10 as described above, and the lower side being connected to the rear plate 40 via the ruled line L12a. are doing.

As shown in FIG. 8, the rear plate 40 has a substantially rectangular shape in a plan view, and has an outer flap 41a connected thereto via a ruled line L8a on the lower side.

As shown in FIG. 8, the left side plate 20 has a substantially rectangular shape in a plan view and is connected to the upper and lower inner flaps 21 and 22 via ruled lines L5a and L9a on the upper and lower sides. Further, the left side plate 20 is connected to the joint allowance 50a via the ruled line L1a on the left side.

As shown in FIG. 8, the right side panel 30 has a substantially rectangular shape in plan view and is connected to the upper and lower inner flaps 31 and 32 via ruled lines L7a and L11a on the upper and lower sides. Further, the right side plate 30 is connected to the joint allowance 50b via a ruled line L1b on the right side.

With this configuration, when the packaging box 200 is formed into a box shape, the bottom plate 60 is attached to the bottom plate 60 like the packaging box 100 by attaching the four flaps of the bottom inner flaps 22, 32 and the outer flaps 12, 42 with an adhesive or the like. By fixing the bottom plate, the trouble of forming the bottom plate can be omitted, and the packaging box 200 can be easily assembled into a box shape.

<Procedure for packing roll bag>
Next, the procedure for assembling the blank sheet B configured as described above into a box shape, including the procedure for accommodating the roll-shaped bag body G in the box, will be described using the packaging box 100 as an example.

First, in order to form the side surfaces of the packaging box 100, the ruled lines L1 to L4 provided at the connecting portions of the front and rear plates 10, 40, the left and right side plates 20, 30, and the joint margin 50 are folded along the creases.

Next, an adhesive is applied to the outer surface of the joint allowance 50 , and the adhesive is fixed to the inner surface near the right side of the rear plate 40 .
After that, the lower inner flaps 22, 32 connected to the lower sides L9, L11 of the left and right side plates 20, 30 are bent to the inner surface side of the packaging box 100, and the ruled lines L10, L12, which are the lower sides of the front and rear plates 10, 40, are bent. The lower outer flaps 12, 42 connected to the lower outer flaps 12, 42 are bent to the inner surface side of the packaging box 100, the outer surfaces of the lower inner flaps 22, 32 and the inner surfaces of the lower outer flaps 12, 42 are brought into contact, and the lower outer flaps 12, 42, The bottom plate of the packaging box 100 is formed by fixing the gap between the lower ends 17 and 43 of the packaging box 42 with an adhesive tape or the like. Thus, the packaging box 100 whose upper side can be opened is configured.

Next, as shown in FIG. 9, using the robot arm A, the roll-shaped bag body G is placed inside the packaging box 100 from the opening 18 of the packaging box 100 with the upper part opened by the above procedure. It is accommodated so that the longitudinal direction thereof is parallel to ruled lines L5 and L7, which are the lateral directions of the left and right side plates 20 and 30. As shown in FIG. At this time, the robot arm A grips the roll-shaped bag G along the peripheral surface of the packaging sheet S surrounding the roll-shaped bag G and conveys it to a predetermined position inside the packaging box 100 .

Such a packaging sheet S has a sheet length that can be wound around the outer periphery of the roll-shaped bag G for at least one turn, the ends of the sheet are overlapped, and the portions are covered with adhesive glue, adhesive tape, or the like. Since the packaging sheet S is fastened with a tack, there is no possibility that the end portion in the peripheral direction will be lifted up, and there is no possibility that the packaging sheet S will be caught and damaged when stored in the packaging box 100.例文帳に追加
In contrast to this configuration, the long sides of the packaging sheet S are simply wrapped around the roll-shaped bag G and the short sides are fixed, so that the packaging sheet S is lifted from the roll-shaped bag G, In this state, when an attempt is made to insert and store the roll-shaped bag G in the packaging box 100, the long sides of the packaging sheet S previously stored in the packaging box 100 and the packaging sheet S to be inserted from now on are aligned. There is a risk that one of the packaging sheets S will be damaged due to interference.
In this way, when the roll-shaped bag body G is accommodated in the packaging box 100, it is structured such that it can be accommodated in a direction in which the packaging sheet S is less likely to get caught, thereby reducing the risk of the packaging sheet S being damaged during accommodation as much as possible. are doing.

Next, the roll-shaped bag body G is stacked up to a height substantially equal to the ruled lines L1 to L4 of the packaging box 100, and then the upper inner flap 21 connected to the ruled lines L5 and L7 which are the upper sides of the left and right side plates 20 and 30. , 31 are bent toward the inner surface of the packaging box 100 .
Next, the upper and outer flaps 11 are connected to the ruled lines L6 and L8 on the upper sides of the front and rear plates 10 and 40 so as to abut on the outer surfaces of the upper and inner flaps 21 and 31 that have been bent toward the inner surface of the packaging box 100. , 41 and fixing the upper ends 19, 44 of the upper and outer flaps 11, 41 with tape or the like, the packaging sheet S surrounding the roll-shaped bag body G can be packed in the packaging box 100 without being damaged. .

In addition, since the formed packaging boxes 100 are stacked and transported on a truck or the like during transportation, the front plate 10 is used as the top surface of the packaging box 100 so that the packaging boxes 100 are not crushed during transportation, and the rear plate 40 is used as the bottom surface, a predetermined strength is ensured so that the packaging box 100 is not crushed during transportation.

<Opening procedure>
Next, a procedure for opening the sealed packaging box 100 as described above after transportation and taking out the roll-shaped bag body G housed in the packaging box 100 will be described with reference to FIGS. 10 to 14.

First, as shown in FIG. 10, the packaging box 100 during and after transportation has front and rear plates 10 and 40 as the top surface and the bottom surface. The outer surface of the packaging box 100 is defined by a third cut line 14 formed in a perforated peripheral edge at the corner R6 of the first cut line 13 formed in the substantially central portion of the front plate 10. The opening 14a can be formed in the third cut line 14 along the third cut line 14 by pressing toward the inner surface from the top (first step).

Next, as a second step, as shown in FIG. 11, a finger H is inserted into the packaging box 100 through the opening 14a, and the end piece 13a surrounded by the first cut line 13 is pushed from the inside of the packaging box 100. By pulling up to the outside, the rectangular portion formed by the first cut line 13 is peeled off from the front plate 10 along the perforations, and the end piece 13a is peeled off from the front plate 10 together with the opening 14a formed in the third cut line 14. An opening 15 is formed (see FIG. 12).

Next, as a third step, as shown in FIG. 13, second cut lines C1, C2, and C3 are formed between the surface portions forming the frame-shaped portion forming the opening 15 of the front plate 10. The cut front end pieces 16a to 16d are opened in the following order by the second cut lines C1, C2 and C3.
First, the front end pieces 16c, 16d are divided along the second cut lines C1, C2, C3 formed linearly from the corner R8 where the third cut line 14 is not formed toward the corner R4. .
Next, the front end pieces 16a and 16b are divided along the second cut lines C1, C2, and C3 formed linearly from the corner R5 where the third cut line 14 is not formed toward the corner R1. do.
Next, the front end pieces 16a, 16d are divided along the second cut lines C1, C2, C3 formed linearly from the corner R6 where the third cut line 14 is formed toward the corner R2. .
Finally, the front end pieces 16b and 16c are divided along the second cut lines C1, C2 and C3 which are linearly formed from the corner R7 where the third cut line 14 is formed toward the corner R3. .

By dividing the front end pieces 16a to 16d along the second cut lines C1, C2, and C3 in this manner, the entire surface of the front plate 10 is opened as shown in FIG. When the roll-shaped bag body G stored in the container is taken out, there is no oversight, and the possibility of erroneously discarding the roll-shaped bag body G can be reduced as much as possible.

Moreover, the procedure for opening the packaging box 100 described above is merely an example, and the procedure is not limited to the procedure for opening the packaging box 100 described above. Therefore, for example, in the above procedure, the third cut line 14 is opened first, but even the first cut line 13 is opened from any of the second cut lines C1, C2, and C3. The face plate 10 may be fully open.

In addition, gaps G1 to G4 are provided between the tip sides of the second cut lines C1, C2, and C3 and the edges of the four corners of the front plate 10. As shown in FIG. According to such a configuration, in the packaging box 100 of a plurality of sizes having different vertical and horizontal sizes of the front plate 10, the front plate 10 has the first cut line 13, the second cut lines C1, C2, C3, and the second cut line C1, C2, C3. It is possible to share the wooden pattern for forming the three cut lines 14 . Here, the wooden pattern for forming the first to third cut lines is, for example, a wooden base plate fitted with a perforation blade for forming perforations that will be the first to third cut lines, It is a die member that is mounted on a die-cutting machine and used to form a blank sheet B obtained by punching.

Specifically, for example, as shown in FIGS. 2 and 6, first to third cut lines are formed between packaging boxes 100 having different overall box sizes so that the longitudinal and lateral dimensions of the front plate 10 are different. It becomes possible to use a common wooden pattern as a wooden pattern for making. That is, if the tip sides of the second cut lines C1, C2, and C3 reach the edges of the four corners of the front plate 10 in the larger packaging box 100B shown in FIG. A wooden pattern for forming 1 to 3 score lines is difficult to apply in manufacturing the smaller packaging box 100A shown in FIG. In this regard, in the packaging box 100 according to the present embodiment, gaps G1 to G4 forming margins are provided between the tip sides of the second cut lines C1, C2, and C3 and the edges of the four corners of the front plate 10. By being provided, it is possible to share the wooden pattern for forming the first to third cut lines between the packaging boxes 100 having different overall box sizes so that the vertical and horizontal dimensions of the front plate 10 are different. It becomes possible.

A plurality of second cut lines C1, C2, and C3 are formed in the boundary portions between the front end pieces 16a to 16d, which serve as cutting portions, so that the front end pieces 16a to 16d can be cut off during the opening operation of the packaging box 100 as described above. When cutting between 16a to 16d, at least one of the second cut lines will function as a cutting guide according to the size of the packaging box 100, making it possible to facilitate the opening work. Become. That is, even if the dimensional ratio of the first to third cut lines to the size of the front plate 10 differs due to the different size of the packaging box 100, any one of the plurality of second cut lines is aligned with the front end pieces 16a to 16d. Since the second cut line is susceptible to stress when cutting the space, the front end pieces 16a to 16d can be easily cut, so that the front plate 10 can be easily opened.

In addition, the present invention is not limited to the above-described embodiments, and the configurations disclosed in the above-described embodiments may be replaced with each other or changed in combination, known inventions, and the above-described embodiments. Configurations in which each configuration is replaced with each other or a combination thereof is also included. Moreover, the technical scope of the present invention is not limited to the above-described embodiments, but extends to matters described in the claims and their equivalents.

100, 200 packaging box 10 front plate 11 upper outer flap 12 lower outer flap 13 first cut line 13a end piece 14 third cut line 14a opening 15 opening 16a to 16d front end piece 20 left side plate 21 upper inner flap 22 Lower inner flap 30 Right side plate 31 Upper inner flap 32 Lower inner flap 40 Rear plate 41 Upper outer flap 42 Lower outer flap 50, 50a, 50b Joint margin A Robot arm B Blank sheet C1, C2, C3 Second cut line H Finger L1-L12 Ruled line P Packaging box S Packaging sheet G Roll-shaped bag body G1-G4 Gap R1-R8 Corner

Claims (3)

Upper and lower outer flaps arranged via ruled lines above and below the front plate and the rear plate of the packaging box;
The upper and lower inner flaps arranged on the upper and lower sides of the left side plate and the right side plate via ruled lines,
A joint allowance provided via a ruled line on one of the front and rear plates and the left and right side plates;
In a rectangular parallelepiped packaging box composed of
A first cut line formed in a rectangular shape as an unsealing means on the front plate;
A second cut line formed to extend outward in an inclined manner from each corner of the rectangular shape formed by the first cut line along the direction of the diagonal line of the rectangle formed by the first cut line , wherein the second cut line is formed by a plurality of parallel straight lines . 2. The packaging box structure according to claim 1, wherein the front plate is provided with a third cut line formed so as to surround the corner of the first cut line from the outside. The third cut line is formed in a substantially arc shape so as to surround the corner of the first cut line from the outside, and the second cut line communicates with the third cut line of the front plate. 3. The packaging box structure according to claim 2, characterized in that it is provided to do so.

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