JP2020093800A - Packaging box structure - Google Patents

Abstract

To provide a packaging box structure allowing easy opening and taking-out of a stored article, improved in storage performance of the stored article and transportation performance in a state of the stored article filled therein, besides, allowing common use of a wooden mold for forming a notch line.SOLUTION: A rectangular parallelepiped packaging box is composed of upper and lower outer flaps arranged at an upper part and a lower part of a front plate 10 and a rear face plate of the packaging box via a ruled line, upper and lower inner flaps arranged at an upper part and a lower part of a left side face plate and a right side face plate via the ruled line, and a joint margin arranged at any one of the front and rear face plates via the ruled line. The packaging box has a first notch line 13 formed in a rectangular shape, and multiple second notch lines C1 linearly formed to lead to a corner part of the front plate from the corner part of the rectangular shape formed by the first notch line, as opening means on the front plate. Besides, a packaging box structure has a third notch line 14 formed to surround the corner part of the first notch line from the outside on the front plate .SELECTED DRAWING: Figure 2

Description

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

2. Description of the Related Art Conventionally, as a garbage bag designated by a local government, there is a roll-shaped bag body obtained by winding a continuous belt-shaped bag body in which a plurality of bag bodies are connected in series via a broken line into a roll shape. As a packaging structure of such a roll-shaped bag, there is one that covers the entire roll-shaped bag with a dedicated packaging bag, but from the viewpoint of resource saving, cost reduction, reduction of dust, etc. Also known is one using a paper-made packaging sheet formed in a narrow strip 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 tubular outer shape.

With regard to such a packaging sheet, it has a sheet length that can be wrapped around the outer circumference of a roll-shaped bag body at least once, and the end portions of the sheets are overlapped with each other, and the portion is fixed with an adhesive paste or an adhesive tape. There is a structure to attach. According to this structure, when the packaging sheet is fixed, the packaging sheet is directly adhered to the roll-shaped bag body, so that the roll-shaped bag body can be prevented from being soiled or broken.

In the roll-shaped bag body thus configured, a plurality of roll-shaped bag bodies are housed in one packaging box and transported to a predetermined location. When accommodating this roll-shaped bag body in the packaging box as a contained object (content), the roll-shaped bag body is inserted into the accommodation space of the packaging box so that the plurality of roll-shaped bag bodies can be stored in the accommodation space. Packed in order from the edge. Further, when stacking a packaging box in which a plurality of roll-shaped bags are stored, the axial direction of the roll-shaped bags is set to the vertical direction in order to prevent the packaging box from being crushed by the load applied to the packaging box during transportation. The packaging boxes are stacked so that

In the packing operation of the roll-shaped bag body into such a packaging box, for example, as shown in FIG. 15, the roll-shaped bag body G wound with the packaging sheet S is inserted into the packaging box P from the side surface of the packaging box. When attempting to store the roll-shaped bag body G, the packaging sheet S surrounding the roll-shaped bag body G may be caught and damaged by the end portion of the already-stored roll-shaped bag body G. In particular, since the position of the roll-shaped bag body G becomes unstable, the packaging sheet S is more likely to be caught as compared with the case where the worker (person) performs the hand-packing work. Therefore, the work of storing the roll-shaped bag G has been performed as a manual packing operation by a person with great care so as not to damage the packaging sheet.

Technologies related to packaging boxes are described in Patent Documents 1 and 2, for example.

Patent Document 1 describes a configuration in which perforated cutting lines extending from the respective corners of the substantially rectangular opening formed on the top surface of the packaging box to the corners of the packaging box are formed. It describes a configuration 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 configuration in which, in a paper storage box, an opening is formed substantially at the center of the top panel, and cut lines are formed from the opening toward the four corners of the packaging box. However, it is described that the storage box can be easily opened by cutting the storage box along the perforations.

JP, 2016-210465, A JP, 2005-104549, A

However, the packaging boxes disclosed in any of the documents do not take into consideration the storability of the stored items in the packaging box and the transportability of the stored items in the packaging box when automating the storage operation of the stored items. Absent.

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

Therefore, according to the present invention, it is possible to easily open and take out the contained item, and it is possible to improve the accommodating property of the contained item and the transportability of the contained item in a packed state, and moreover, the score line. It is an object of the present invention to provide a packaging box structure that can use a common wooden mold for forming a container.

The present invention is directed to upper and lower outer flaps arranged above and below a front plate and a rear plate of a packaging box via ruled lines, upper and lower inner flaps arranged above and below a left side plate and a right side plate through ruled lines, front and rear face plates, and In a rectangular parallelepiped-shaped packaging box configured by a joint margin arranged on one of the left and right side plates via a ruled line, a rectangular first cut line serving as an opening means on the front plate and the first cut line. The packaging box structure is characterized in that a plurality of second cutting lines are formed in a straight line from a rectangular corner formed by one cutting line toward a corner of the front plate.

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

Further, the third cutting line is formed in a substantially arc shape so as to surround the corner portion of the first cutting line from the outside, and the second cutting line is formed by the third cutting line of the front plate. 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 as set forth in claim 1, the upper and lower outer flaps arranged above and below the front plate and the rear plate of the packaging box via ruled lines, and the upper and lower outside flaps arranged above and below the left side plate and right side plate through the ruled lines. In a rectangular parallelepiped-shaped packaging box constituted by an inner flap and a joint margin arranged on one of the front and rear side plates and the left and right side plates via ruled lines, a first rectangular shape is formed on the front plate as an opening means. The package includes a score line and a plurality of second score lines that are linearly formed from a rectangular corner formed by the first score line toward a corner of the front plate. It is possible to realize a packaging box form having a predetermined strength when the boxes are stacked or when the packaging box is transported, and the front plate can be easily opened after transporting the packaging box without changing the orientation of the packaging box.
In addition, by forming a plurality of second cutting lines in a straight line from the corners of the first cutting lines toward the corners of the front plate, any of the second cutting lines is independent of the size of the packaging box. Functions as a shearing auxiliary line toward the corner of the front plate, and the front plate can be easily opened.
Further, since the second cutting line is formed in a straight line so as to face the corner of the front plate, the second cutting line is formed in the same form in the large and small boxes having different sizes. Even if it does, one of the cut lines can easily open the front plate toward the corner of the front plate, and the wood pattern for forming the cut line can be made common.

Further, according to the invention as set forth in claim 2, the front plate is provided with the third cutting line formed so as to surround the corner portion of the first cutting line from the outside. It becomes possible to select the first open line, the second open line, or the third open line for the procedure to open the entire surface of the front panel, and increase the degree of freedom in the procedure to open the entire front plate. You can
Further, when the front plate is opened, an opening is formed starting from the third cut line having the smallest area, and then the end piece formed by cutting along the first cut line is removed. To form an opening in the center of the front plate, and further cut the remaining end piece with the second score line extending from the corner of the opening toward the corner of the front plate to easily cover the entire front plate. Can be opened. Further, since the end pieces having the largest area are sequentially removed from the third cut line having the smallest area, the front plate of the packaging box can be efficiently opened.

Further, according to the invention of claim 3, the third cutting line is formed in a substantially arc shape so as to surround the corner of the first cutting line from the outside, and the second cutting line is formed. Is provided so as to communicate with the third cut line of the front plate, the same force can be applied and the opening can be easily formed regardless of which part of the third cut line is pressed.

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 the front plate at the time of assembling the packaging box in embodiment of this invention. It is a perspective view which shows other embodiment of the 3rd score line provided in the front plate of the packaging box in embodiment of this invention. It is a front view which shows the front plate which shows other embodiment of the 3rd notch line provided in the front plate of the packaging box in embodiment of this invention. It is a perspective view which shows the form with a different size of the packaging box in embodiment of this invention. It is a perspective view which shows other embodiment which shows the 3rd cut line in the assembly state of the packaging box in embodiment of this invention. It is a figure which shows the state which expanded the packaging box in the other Example of this invention. FIG. 3 is a perspective view showing a state where a roll-shaped bag body surrounded by a packaging sheet is packaged by a robot arm in a packaging box according to an embodiment of the present invention. It is a perspective view which shows the 1st step when opening the front plate of the packaging box in embodiment of this invention. It is a perspective view which shows the 2nd step at the time of opening the front plate of the packaging box in embodiment of this invention. It is a perspective view showing the state where the end piece was removed by the cut line in the second step when opening the front plate of the packaging box in the embodiment of the present invention. It is a perspective view which shows the 3rd step at the time of opening the front plate of the packaging box in embodiment of this invention. It is a perspective view which shows the state which made the front plate the whole open state by the 3rd step at the time of opening the front plate of the packaging box in embodiment of this invention. It is a perspective view which shows the problem at the time of packing the roll-shaped bag body which surrounded the packing sheet in the conventional packing box.

The present invention is a top and bottom outer flaps arranged above and below a front plate and a back plate of a packaging box via ruled lines, a top and bottom inner flaps arranged above and below left side plate and right side plate through ruled lines, front and rear face plates, and In a rectangular parallelepiped-shaped packaging box configured by a joint margin arranged on one of the left and right side plates via a ruled line, a rectangular first cutting line as an opening means on the front plate, and A plurality of second cutting lines that are linearly formed from the corners of the first cutting lines toward the front, rear, left, and right corners of the front plate, and substantially half the corners of the first cutting lines. The gist is that it has a circular third cut line.

Embodiments of the present invention will be described in detail with reference to FIGS.
FIG. 1 shows one sheet-shaped blank sheet B before the packaging box 100 according to the embodiment of the present invention is assembled. That is, the blank sheet B is in a state where the packaging box 100 is expanded.

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

As shown in FIGS. 1 and 2, the packaging box 100 includes a blank sheet B obtained by cutting out a single cardboard sheet by mountain folding or valley folding according to the ruled lines L1 to L12. The joint margin 50 provided at the ends 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 sheet 100 (100A) of FIG.

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

A first cut line 13 having a substantially rectangular shape and a shape similar to that of the front plate 10 is formed at a substantially central portion of the front plate 10. The first score line 13 is a rectangular perforation. Of the four corners R5, R6, R7, R8 of the first score line 13, a perforated, substantially semi-circular third score line 14 is formed at the upper right and upper left corners R6, R7. doing. The third cut line 14 is formed so as to surround the rectangular corner of the first cut line 13 from the outside in an arc shape. Therefore, according to the 3rd cutting line 14, it is surrounded by these 3rd cutting lines 14 by the arc-shaped 3rd cutting lines 14 with the right-angled bending line of the corner of the 1st cutting line 13. As the portion, a substantially fan-shaped portion having a central angle of about 270° is formed. In other words, the front plate 10 has a rectangular portion inside the first cutting line 13 and the first cutting line 13 as the area portion divided by the first cutting line 13 and the third cutting line 14. It has an outer frame-shaped portion and the above-mentioned substantially fan-shaped portion included in this frame-shaped portion.

Outside the four corners R5, R6, R7, and R8 of the first score line 13, perforations are linearly formed toward the corners R1, R2, R3, and R4 of the front plate 10. The three formed second cut lines C1, C2, C3 are formed respectively. The second cut lines C1, C2, C3 extend outward in a slanted manner from the corners of the rectangular cut line 13 along the direction of the diagonal line of the rectangular shape formed by the first cut line 13. Has been formed. In the present embodiment, as shown in FIG. 2, the second cut line C1 is straight from the corners R5, R6, R7, R8 of the first cut line 13 to the corners R1 to R4 of the front plate 10. It is formed into a shape.

The three second cut lines C1, C2, C3 are formed in parallel with a straight line connecting the corners of the first cut line 13 and the apexes of the corners of the front plate 10. In the drawing of the front plate 10 of FIG. 3 viewed from the front, the central second cutting line C1 among the three second cutting lines C1, C2 and C3 is the corner of the first cutting line 13. It is located on a straight line connecting the vertices of the corners of front plate 10. The other two second cut lines C2 and C3 have substantially the same interval with respect to the central second cut line C1, and are provided line-symmetrically with the second cut line C1 as the center line.

Of the three second cutting lines C1, C2, C3 formed at four positions near the four corners of the front plate 10, the upper left and right of the first cutting line 13 in which the third cutting line 14 is not formed The three second cut lines C1, C2, C3 formed outside the lower corners R5, R8 are similar in the relationship between the corner of the first cut line 13 and the corner of the front plate 10. It is provided in the form. Specifically, in the present embodiment, three second cut lines C1, C2, C3 are provided outside the corners R5, R8 so that one end side is connected to the first cut line 13. There is. Specifically, outside the corners R5, R8, the central second cutting line C1 of the three second cutting lines C1, C2, C3 has the other end side of the first cutting line 13 The other two second cut lines C2 and C3 are connected to the apex of the corner, and the other end side is connected to the side near the apex of the first cut line 13.

Further, of the three second cutting lines C1, C2, C3 formed at four locations near the four corners of the front plate 10, the upper right side of the first cutting line 13 in which the third cutting line 14 is formed and The three second cut lines C1, C2, C3 formed outside the lower left corners R6, R7 are provided in the same manner in the relationship between the third cut line 14 and the corners of the front plate 10. Has been. Specifically, in the present embodiment, three second cut lines C1, C2, C3 are provided outside the corners R6, R7 so that one end side is connected to the third cut line 14. There is.

In this way, one end side (hereinafter referred to as “base end side”) of each of the second cut lines C1, C2, C3 is connected to the peripheral portions 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 "tip side") is connected to the edge of the front plate 10 forming the corners R5, R6, R7, R8. However, the gaps G1 to G4 are provided between the tips of the second cut lines C1, C2, C3 and the edge of the front plate 10.

By providing the gaps G1 to G4, the ruled lines L5, L7, L9, and L11 are bent from the corners R1 to R4 of the front plate 10 even when a plurality of packaging boxes 100 are stacked with the front plate 10 as the top surface. The load is transmitted in the axial direction of the ridge line formed as described above, and the probability that the packaging box 100 is crushed is reduced as much as possible. That is, the presence of the gaps G1 to G4 in which the second cut lines C1, C2, and C3 are not formed causes that portion to become a blank portion in which the second cut lines C1, C2, and C3 are interrupted, and this margin The portion and the ridge portion along the ruled lines L5, L7, L9, and L11 function as a columnar portion having relatively high rigidity. Accordingly, when the front plate 10 is used as the top surface, the columnar portion reinforces the packaging box 100 (100A), and the load resistance in the vertical direction of the packaging box 100 (100A) is improved.
In addition, 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 formation position of the third cut line 14 is R6 and R7. However, the third cut line 14 may be formed by selecting any one or two or three positions from the corners R5, R6, R7, and R8. The third cut line 14 may be formed at all four positions of R6, R7, and R8.

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

The third cut line 14 having a substantially triangular shape as viewed from the front is configured such that the sides CL5b and CL5c are not connected to each other at the remaining tops of the substantially triangular shape as viewed from the front except for the corners R5a and 5b. Has been done. According to this structure, when the front plate 10 is in the fully open state, if the end piece having a substantially octagonal shape is removed according to the first cut line 13, the second cut lines C1, C2 and C3 are cut at the third cut line. The substantially triangular portion formed by the lead wire 14 remains in a connected state. After that, the remaining substantially triangular portion functions as a tab when opening the second cut lines C1, C2, C3, and the second cut lines C1, C2, C3 can be easily opened.

Further, the third score line 14 is not only formed at the corners R5, R6, R7, R8 of the first score line 13, but also constitutes the first score line 13 having a substantially rectangular shape in a front view. It may be provided on any of the sides, and even if the perforation shape formed is formed in a substantially circular shape so as to straddle the sides of the first score line 13, the inside of the first score line 13, It may be formed only on one of the outer sides, and may be formed 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.

Further, the perforated cut lines 13, 14, C1, C2, 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 has a similar effect. Can be opened easily. That is, each of the score lines 13, 14, C1, C2, C3 is connected to one of the perforated score lines to prevent breakage in a portion other than the score line, and further By configuring a plurality of cut lines C1, C2, C3, any one of the configured second cut lines C1, C2, C3 can be directed to the corner of the packaging box 100 (100B). Become.

At this time, among the second cut lines C1, C2, C3 formed in three, in FIG. 2 and FIG. 3, the second cut line C1 is a right angle portion of the front plate 10, that is, each of the corners R1 to R4. In the packaging box 100 (100B) shown in FIG. 6, the second cut line C2 forms a cut line extending toward each of the corners R1 to R4 of the front plate 10 although it is provided toward the front plate 10.
By thus constructing the cutting line by the plurality of second cutting lines C1, C2, C3, any one of the second cutting lines C1, C2, C3 faces the corners R1 to R4 of the front plate 10. Therefore, it can function as a cutting guide when the front plate 10 is fully opened.
Although the second cut lines C1, C2, C3 are configured to have three straight lines in the present embodiment, the number of the second cut lines C1, C2, C3 is not limited to this, and two second cut lines C1, C2, C3 are provided. It suffices if it is composed of a plurality of the above. In this way, by providing a plurality of second cut lines C1, C2, C3, the cut lines are the corners R5, R6, 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 entirely opened. Further, although the second cut lines C1, C2, C3 are described as being in a substantially parallel state, the second cut lines C1, C2, C3 are not particularly limited to the parallel state, and are formed radially around the corner of the first cut line 13. Alternatively, it may be formed so as to be concentrated in the corner of the packaging box 100, and a plurality of pieces extend to the corner of the front plate 10 with the vicinity of the corner of the first score line 13 as the base end. Anything is fine.
In addition, in the above-mentioned embodiment, although the 2nd cutting line C1, C2, C3 is formed outside the 3rd cutting line 14, the 2nd cutting line C1, C2, C3 is the 3rd cutting line. It may be formed in a range up to the inside of the lead wire 14. Specifically, in the example shown in FIG. 7, the three second cut lines C1, C2, C3 formed at four locations near the four corners of the front plate 10 are 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 pieces are provided substantially vertically symmetrically and substantially horizontally symmetrically. Outside the upper right and lower left corners R6, R7 of the first score line 13, the three second score lines C1, C2, C3 are all formed so as to intersect the third score line 14. ing. That is, the three second cut lines C1, C2, C3 are formed inside and outside the substantially semicircular region of the third cut line 14. Therefore, it is formed so as to cross the substantially fan-shaped portion defined by the bent 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 in a front view, and the ruled lines L5 and L9 forming the upper and lower sides of the left side plate 20 are longer than the ruled lines L1 and L2 forming the left and right sides. The ruled line L5 that constitutes the upper side of the left side plate 20 and the ruled line L9 that constitutes the lower side are the upper inner flap 21 and the lower inner flap 22 that are located inside when the blank sheet B is assembled into the packaging box 100. They are arranged vertically. Further, a joint margin 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 surface plate 30 has a ruled line L7 and a ruled line L11 that are substantially the same in shape as the left side plate 20 and are provided with an upper inner flap 31 and a lower inner flap 32, respectively. Further, a rear face plate 40 is continuously provided on the right side of the right side face plate 30 via a ruled line L4.

As shown in FIG. 1, the rear surface plate 40 has an upper outer flap 41 and a lower outer flap 42 at the ruled lines L8 and L12 that form the upper and lower sides of the rear plate 40 in a shape substantially similar to the front plate 10 in plan view. It is connected.
In the present embodiment, the rear face plate 40 is not provided with the first cut line 13, the third cut line 14, and the second cut lines C1, C2, C3 provided on the front plate 10, but the present invention is not limited to this. The present invention is not limited to this structure, and the rear surface plate 40 may be provided with the cut lines 13, 14, C1, C2, and C3.

As shown in FIG. 1, the joint margin 50 has a substantially rectangular shape in a plan view and is connected to the left side face plate 20 via a ruled line L1. When the blank sheets B are assembled into a substantially box shape, the joint margin 50 is fixed to the vicinity of the right side of the rear plate 40 with an adhesive to form a rectangular tube.
Although the joint margin 50 has a substantially rectangular shape in a plan view as shown in FIG. 1, it may have any shape as long as the left side plate 20 and the rear plate 40 can be fixedly mounted, for example, a triangular shape or It may be either circular or elliptical.

<Second embodiment>
Next, a second embodiment in which the blank sheet B forming the packaging box is changed from the horizontally long shape to the vertically long shape as described above will be described. The same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be appropriately omitted.

The packaging box 200 includes front and rear plates 10, 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 the bottom plate 60 located, the joint margin 50a continuously provided via the ruled line L1a of the left side plate 20, and the joint margin 50b continuously connected 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 plan view, and has left and right side plates 20, 30 connected in series through ruled lines L2a, L3a on the left and right sides. Further, the upper side of the front plate 10 is connected to the upper outer flap 11a via the ruled line L6a, and the lower side is connected to the bottom plate 60 via the ruled line L10a.

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

As shown in FIG. 8, the rear plate 40 has a substantially rectangular shape in a plan view, and is provided with an outer flap 41a continuously through a ruled line L8a on the lower side.

Further, as shown in FIG. 8, the left side plate 20 is substantially rectangular 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 side and the lower side. Further, the left side plate 20 is connected to the joint margin 50a via the ruled line L1a on the left side.

In addition, as shown in FIG. 8, the right side plate 30 is substantially rectangular in a plan view and is continuously provided with the upper and lower inner flaps 31 and 32 via ruled lines L7a and L11a on the upper side and the lower side. Further, the right side plate 30 is connected to the joint margin 50b via the 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 has four inner flaps 22 and 32 and outer flaps 12 and 42 on the bottom surface made of an adhesive or the like like the packaging box 100. By fixing, the labor for forming the bottom plate is omitted, and the packaging box 200 can be easily assembled into a box shape.

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

First, in order to form the side surface when the packaging box 100 is formed, the ruled lines L1 to L4 provided at the respective connecting portions of the front and rear surface plates 10 and 40, the left and right side surface plates 20 and 30, and the joint margin 50 are bent according to the folds.

Next, an adhesive material is applied to the outer side surface of the seam allowance 50, and is adhesively fixed to the inner surface near the right side of the rear plate 40.
After that, the lower inner flaps 22, 32 which are continuously provided on the lower sides L9, L11 of the left and right side plates 20, 30 are bent toward the inner surface side of the packaging box 100, and further, the ruled lines L10, L12 which are the lower sides of the front and rear surface plates 10, 40. The lower and outer flaps 12, 42 that are connected to each other are bent toward the inner surface side of the packaging box 100, and the outer surfaces of the lower inner flaps 22, 32 and the inner surface of the lower outer flaps 12, 42 are brought into contact with each other. The bottom plate of the packaging box 100 is formed by fixing the gap between the lower end portions 17 and 43 of 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 through the opening 18 of the packaging box 100 in the upper opening state formed by the above procedure, the roll-shaped bag G is placed inside the packaging box 100. It is housed so that its longitudinal direction is parallel to the ruled lines L5, L7, which are the lateral directions of the left and right side plates 20, 30. At this time, the robot arm A holds 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 circumference of the roll-shaped bag body G at least once, and the edges of the sheets are overlapped with each other, and the portions are bonded with adhesive paste, adhesive tape, or the like. Since it is configured to be fastened with, there is no fear that the end portion in the circumferential direction will float, and there is no risk that the packaging sheet S will be caught and damaged when stored in the packaging box 100.
In contrast to this configuration, the long side of the packaging sheet S is simply wrapped around the roll-shaped bag G and the short side is fixed, so that the packaging sheet S floats from the roll-shaped bag G. When the roll-shaped bag body G is inserted and stored in the packaging box 100 in this state, the long sides of the packaging sheet S previously stored in the packaging box 100 and the long side edges of the packaging sheet S to be inserted are This may cause interference and damage one of the packaging sheets S.
As described above, when the roll-shaped bag G is housed in the packaging box 100, the packaging sheet S can be housed in a direction in which the packaging sheet S is unlikely to be caught, so that the risk of the packaging sheet S being damaged during housing is reduced as much as possible. doing.

Next, the roll-shaped bag bodies G are stacked to a height substantially equal to the ruled lines L1 to L4 of the packaging box 100, and then the upper inner flap 21 that is continuously provided to the ruled lines L5 and L7 that are the upper sides of the left and right side surface plates 20 and 30. , 31 are bent toward the inner surface of the packaging box 100.
Next, the upper and outer flaps 11 connected to the ruled lines L6 and L8 which are the upper sides of the front and rear face plates 10 and 40 so as to come into contact with the outer surfaces of the upper inner flaps 21 and 31 which are first bent to the inner surface side of the packaging box 100. , 41 are bent and the upper end portions 19, 44 of the upper and outer flaps 11, 41 are fixed with tape or the like, so that the packaging sheet S surrounding the roll-shaped bag G can be packed in the packaging box 100 without damage. ..

In addition, since the formed packaging box 100 is transported by being stacked on a truck or the like during transportation, the front plate 10 serves as the top surface of the packaging box 100 and the rear plate 40 so that the packaging box 100 is not crushed during transportation. With the bottom as the base, a predetermined strength is secured so that the packaging box 100 is not crushed during transportation.

<Opening procedure>
Next, a procedure for carrying out the packaging box 100 sealed as described above after transporting it and taking out the roll-shaped bag G accommodated 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 transportation and after transportation has the front and rear face plates 10 and 40 as the top surface and the bottom surface. A substantially fan-shaped portion formed by a third cut line 14 having a perforated peripheral edge portion at a corner R6 of a first cut line 13 formed at a substantially central portion of the front plate 10 is an outer surface of the packaging box 100. The opening 14a can be formed in the third cutting line 14 along the third cutting line 14 by pressing from the inside toward the inner surface (first step).

Next, as a second step, as shown in FIG. 11, the finger H is inserted into the inside of the packaging box 100 through the opening 14a, and the end piece 13a surrounded by the first cut line 13 is inserted from inside the packaging box 100. By pulling it 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 removed together with the opening 14a formed in the third cut line 14. The opening 15 is formed (see FIG. 12).

Next, as a third step, as shown in FIG. 13, the second cut lines C1, C2, C3 are formed between the surface portions that form the frame-shaped portion that forms the opening 15 of the front plate 10 and are located between each other. The formed front end pieces 16a to 16d are unsealed 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 that are linearly formed from the corner R8 where the third cut line 14 is not formed to the corner R4. ..
Next, the front end pieces 16a, 16b are divided along the second cut lines C1, C2, C3 formed linearly from the corner R5 where the third cut line 14 is not formed to the corner R1. To do.
Next, the front end pieces 16a, 16d are divided along the second cutting lines C1, C2, C3 which are linearly formed from the corner R6 where the third cutting 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. ..

In this way, by dividing each piece of the front end pieces 16a to 16d by the second cut lines C1, C2, C3, as shown in FIG. When taking out the roll-shaped bag G housed in, the oversight is eliminated, and the probability of accidentally discarding the roll-shaped bag G can be reduced as much as possible.

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

Further, gaps G1 to G4 are provided between the tip ends of the second cut lines C1, C2, C3 and the four corner edges of the front plate 10. According to such a configuration, in the packaging boxes 100 of a plurality of sizes in which the length and width of the front plate 10 are different, the first cut line 13, the second cut lines C1, C2, C3, and the first cut line 13 are formed on the front plate 10. It is possible to use a common tree pattern for forming the 3-cut lines 14. Here, the wooden mold for forming the first to third cut lines is, for example, one in which a perforation blade for forming perforations serving as the first to third cut lines is fitted to a wooden base plate, It is a die member that is mounted on a die cutting machine and is used for forming a blank sheet B obtained by punching.

Specifically, for example, as shown in FIG. 2 and FIG. 6, the first to third cut lines are formed between the packaging boxes 100 having different sizes of the entire box so that the vertical and horizontal dimensions of the front plate 10 are different. It is possible to use a common tree pattern as a tree pattern for doing. That is, if, in the larger packaging box 100B shown in FIG. 6, the leading ends of the second cut lines C1, C2, C3 reach the edges of the four corners of the front plate 10, the first packaging box 100B is manufactured. The wooden pattern for forming the 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, the gaps G1 to G4 forming a blank space are provided between the front end sides of the second cut lines C1, C2, C3 and the four corner edges of the front plate 10. Since the packaging boxes 100 are provided, the wooden patterns for forming the first to third cut lines can be shared between the packaging boxes 100 having different sizes of the entire box so that the vertical and horizontal dimensions of the front plate 10 are different. It will be possible.

Further, since the plurality of second cut lines C1, C2, C3 are formed in the boundary portion which is the cut portion between the front end pieces 16a to 16d, the front end piece is opened in the opening operation of the packaging box 100 as described above. At the time of cutting between 16a to 16d, at least one of the second cutting lines functions as a cutting guide depending on the size of the packaging box 100, and the opening operation can be facilitated. Become. That is, even if the dimensional ratio of the first to third cut lines to the size of the front plate 10 is different due to the different size of the packaging box 100, one of the plurality of second cut lines is connected to the front end pieces 16a to 16d. It becomes the second score line that is easily subjected to stress when cutting the space, and the front end pieces 16a to 16d can be easily cut, so that it is possible to easily open the entire front plate 10.

It should be noted that the present invention is not limited to the above-described embodiments, and the configurations disclosed in the above-described embodiments are mutually replaced or the combinations are changed, a known invention and the above-described embodiments. A configuration in which the respective configurations are mutually replaced or the combination is changed is also included. Further, the technical scope of the present invention is not limited to the above-described embodiments, but extends to the matters described in the claims and equivalents thereof.

100,200 Packaging box 10 Front plate 11 Upper outer flap 12 Lower outer flap 13 First cutting line 13a End piece 14 Third cutting 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 score line H finger L1 to L12 Ruled lines P Packaging box S Packaging sheet G Roll bag G1 to G4 Gap R1 to R8 Corner

Claims (3)

Upper and lower outer flaps arranged via ruled lines above and below the front and rear plates of the packaging box,
Upper and lower inner flaps arranged above and below the left side plate and the right side plate via ruled lines,
A seam allowance arranged on either the front and rear side plates or the left and right side plates via ruled lines,
In the rectangular parallelepiped packaging box configured by
As an opening means on the front plate,
A first cut line formed in a rectangular shape,
A plurality of second cutting lines linearly formed from a rectangular corner formed by the first cutting line toward the corner of the front plate;
A packaging box structure characterized by having. The packaging box structure according to claim 1, wherein the front plate includes a third cut line formed to surround the corner of the first cut line from the outside. The third cutting line is formed in a substantially arc shape so as to surround the corner portion of the first cutting line from the outside, and the second cutting line communicates with the third cutting line of the front plate. The packaging box structure according to claim 2, wherein the packaging box structure is provided.

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