JP3042923U - Packaging equipment for three-way packaging containers - Google Patents

Abstract

(57) [Problem] A secondary use for providing a mirror rice cake by securely protecting a corner of a container of a three-way packaging container for packaging a rice cake, so as not to be crushed even when pressed by a stacking load. As a normal use. SOLUTION: Right and left side wall plate portions are extended on left and right sides of a bottom wall plate portion, left and right top wall plate portions are respectively extended on left and right sides of the left and right side wall plate portions, and an insertion portion is inserted into the left top wall plate portion. And left and right support walls are respectively formed in the left and right side wall plate portions.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to the field of packaging devices for three-way wrapping containers.

[0002]

[Prior art]

 Conventional three-way combined packaging containers are manufactured by thinning the material in order to reduce the manufacturing cost, and the manufactured three-way combined packaging containers are repeatedly used to package kagamimochi products, and the packaging containers and kagamimochi are separately provided. It was packaged through the packaging material.

[0003]

[Problems to be solved by the device]

 When the conventional packaging material described above is wrapped from the outside of the three-way combined packaging container in which kagamimochi is wrapped and transported in a stacked state, the corners of the bottom part that constitutes the container part of the three-way combined packaging container that is covered. Could be pressed, buckled, and collapsed.

Further, in the above-mentioned conventional packaging material, after being wrapped from the outside of the three-way combined packaging container in which kagamimochi is packaged, it has been necessary to seal the upper joint so as not to separate the packaging material. .

However, the packaging device for a three-way combined packaging container of the present invention, even when packaging a three-way combined packaging container that covers kagami mochi, presses the corners of the bottom surface of the container to buckle it. , It is possible to prevent from being unable to exert the functions of the three sides due to buckling.

Further, the packaging device for a three-way combined packaging container of the present invention is such that, when the three-way combined packaging container is wrapped from the outside, the joining points are surely connected and a seal is attached without using a seal. The workability is eliminated and packaging workability is significantly improved.

Further, the packaging device for a three-way combined use packaging container of the present invention is firmly fixed when the three-way combined use packaging container is covered, and the packaging container does not swing. Therefore, the three-sided packaging container is not damaged.

[0008]

[Means for Solving the Problems]

 The invention according to claim 1 uses the mirror rice cake repeatedly when it is packaged, and after unwrapping it, the mirror rice cake placing base and the container portion are extended outward so that the above-mentioned repeated pulling state can be used again as the three times of pulling. Left side edge and right side edge of the bottom wall plate that has a shape in which the bending points are formed with concave grooves Are symmetrically bent to form a left side wall plate part and a right side wall plate part, and the height of the left side wall plate part and the right side wall plate part is set to the height of the container part that constitutes the three-way combined packaging container. Raise it slightly higher and bend the left and right side wall plate parts inwardly through the folding curves near the bottom wall plate part, and sequentially extend the left top wall plate part to the bent left side wall plate part. The right side wall plate part that has been installed and bent has the right top wall plate part extended to the upper side of the left side wall plate part that constitutes the left side wall plate part. Between the folding curve and the lower folding curve of the bottom wall plate, make a length slightly shorter than the entire length of the upper folding curve, and make a cut parallel to the lower folding curve. An upper fold that is closer to the right ceiling wall plate portion that forms the right side wall plate portion is formed by forming a left side support wall portion that has a slight amount of voids and is cut off to form the lower folding curve and a parallel lower edge portion. Between the curve and the lower fold curve of the bottom wall plate, make a length slightly shorter than the total length of the upper fold curve, make a parallel cut with the lower fold curve, and slightly more than the lower fold curve. And a packaging instrument having a structure in which the right side support wall portion having the lower folding curve and the parallel lower edge portion is formed so as to be omitted.

A kagami mochi is placed on the bottom wall plate portion constituting the packaging device, and the three-way combined packaging container that is repeatedly placed on the placed kagami mochi is placed above the bottom portion constituting the container portion of the packaging container. The left and right side wall plates and the left and right top wall plates are bent along each folding curve, and the lower end edges of the left side support wall and the right side support are used for the three A packaging device for a three-way combined packaging container, which is assembled by being fitted into a concave groove that constitutes the packaging container and connected to both the left and right top wall plate portions.

According to a second aspect of the present invention, the left side support wall portion and the right side support wall portion are provided on both left and right sides of the left side support wall portion and the right side wall portion between the upper folding curve and the parallel lower end edge portion. An inner cut parallel to the notch provided, an upper cut above the inner cut, and a lower cut below the inner cut, and surrounded by the inner cut, the upper cut, and the lower cut. The above-mentioned left side support wall portion and right side support wall portion are outwardly expanded to form reinforcing pieces, respectively.

According to a third aspect of the present invention, the right ceiling wall plate portion has the left side support wall portion and the right side support wall portion at a front edge portion and a rear edge edge portion that form the right ceiling wall plate portion. Is a packaging device for a three-way combined packaging container in which a front side wall and a rear side wall having the same length are respectively extended through folding curves.

According to a fourth aspect of the present invention, the right ceiling wall plate portion has the left side support wall portion and the right side support wall portion at a front edge portion and a rear edge edge portion that form the right ceiling wall plate portion. A front side wall part and a rear side wall part having the same length as the left side support wall part and the right side support wall part inside the front side wall part and the rear side wall part, respectively. This is a packaging device for a three-way combined use packaging container in which reinforcing pieces of the same shape as the reinforcing pieces that are formed on the inside of and that expand outward are formed.

[0013]

[Action]

 The operation of the device according to claim 1 will be described below.

The kagami mochi, which is a product, is placed on the bottom wall plate portion that constitutes the packaging container of the present invention, and the three-way combined packaging container is repeatedly pulled to cover the kagamimochi with the placing table. The coated kagami mochi is completely contained in the container of the three-sided packaging container.

Thereafter, the left and right side wall plate portions of the packaging device of the present invention are folded along a folding curve. At that time, the flat lower end edges of the left and right support wall portions formed by cutting in the left and right side wall plate portions are fitted into the concave grooves at the bent portions of the mounting base portion and the container portion, and Both side wall plates are slightly inclined inward. Further, the right ceiling wall plate portion is adhered to the bottom surface of the container portion of the three-way combined packaging container through a folding curve. On the other hand, the right top wall plate portion is closely attached to the bottom surface of the container portion of the three-way combined packaging container through a folding curve.

Then, the rear insertion part is inserted into the notch formed in the right ceiling wall plate part, and after the insertion as described above, a fold curve formed between the left ceiling wall plate part and the insertion part is formed. A cut is provided that is shorter than the length and on the same line as the above-mentioned folding curve, and the upper part of the right-angled cut, which is cut at a right angle from the center of the cut to the insertion part, is pressed against the cut with fingers. When pressed as described above, the corner portion separated by the notch and the right-angled notch is locked in the notch in the right ceiling wall plate portion and cannot be easily removed.

When assembled as described above, the entire three-way combined packaging container enclosing the rice cake is firmly secured.

Further, the parallel lower edge portions of the left and right support walls are fitted in the recessed grooves on both the left and right sides, so that they do not swing.

Further, in order to take out the kagami mochi packaged as described above, the insertion part is detached from the cut. When the insertion portion is detached as described above, the parallel lower edge portion fitted in the groove is detached from the groove, and the left and right side wall plate portions are expanded outward, Take out the three-way wrapping equipment and expose Kagami-mochi.

Then, in the present invention, the above three-way combined packaging container is repeatedly pulled, and a blank sheet and a kagami mochi are placed on the upper surface of the placing table. At that time, since the brim part of the kagami mochi protrudes from the bottom, the kagami mochi does not fall into the container.

The operation of the device according to claim 2 will be described below.

The operation of the present invention is different from the gist of the invention according to claim 1 in the following points.

In the packaging device for a three-way combined packaging container of the present invention, the parallel lower edge portion is inserted and inserted into the concave groove that constitutes the three-way combined packaging container that is repeatedly drawn to cover the rice cake. When the notch is inserted into the notch of the right ceiling wall plate and assembled, the strength of the left and right support wall portions is significantly increased by the reinforcing pieces formed on the left and right support wall portions. Therefore, even if a packaging container such as a packaging container for other three-sided rice cake that is packed with other mirror rice cakes is stacked above the packaging device of the packaging container for three-sided food container of the present invention, The corners of the container of the three-way packaging container located at are not pressed and crushed.

The operation of the device according to claim 3 will be described below.

The above invention differs from the configurations of the inventions according to claims 1 and 2. That is, the present invention is that the front side wall portion and the rear side wall portion are provided at the front and rear side edge portions of the right ceiling wall plate portion. The front and rear side wall portions of the two sheets are also inserted into the concave grooves of the three-way combined packaging container that covers the rice cake. As described above, the operational features of the present invention are that it is inserted into all the recessed grooves formed around the entire circumference of the three-way combined packaging container together with the left and right support wall portions that are the configuration of the invention according to claim 1. There is.

As described above, in the packaging device for a three-way combined use packaging container of the present invention, when each of the side wall portions is fitted and inserted into all the recessed grooves of the three-way combined use packaging container, it is pressed by a stacking load and a force against crushing is prevented. Has increased. Therefore, the possibility that the four corners of the container forming the three-way combined packaging container are pressed and crushed is eliminated.

The operation of the device according to claim 4 will be described below.

A feature of the packaging device for a three-way combined use packaging container of the present invention is that the reinforcing pieces extending outward are respectively formed on the four wall portions of the left and right side supporting wall portions and the front and rear side wall portions. .

Therefore, when the lower end edge of each of the four wall portions is fitted into the concave groove constituting the repeated three-way combined use packaging container and the three-way combined use packaging container is packaged, four Reinforcing pieces reinforce each of the four walls.

[0030]

[Embodiment of the invention]

 An embodiment of the device according to claim 1 will be described below.

D is repeatedly used when the kagamimochi k is packaged, and after unwrapping, the above-mentioned repeated pulling state is used as a three-way pulling cycle again. Is a three-way combined packaging container in which the bent portion is formed by the concave groove 3. Reference numeral 2'denotes a bottom surface portion of the container portion 2 constituting the container d, and reference numeral 4 denotes a corner portion of the bottom surface portion 2 '. Reference numeral 5 is a wrapping portion for kagami mochi k. Reference numeral 7 denotes a bottom wall plate portion having a shape capable of mounting the mounting base portion 1 constituting the three-way combined packaging container d. The left end edge portion 8 and the right end edge portion 8'of this bottom wall plate portion 7 are symmetrically bent to form a left side wall plate portion 9 and a right side wall plate portion 9 '. 10 'and 10' are downward bending curves, and the heights of the left side wall plate portion 9 and the right side wall plate portion 9'are made slightly higher than the height of the container portion 2 constituting the three-way combined packaging container d, and the bottom The left and right side wall plate portions 9 and 9'are bent inwardly through bending lines 10 near the wall plate portion 7, respectively. Further, a left ceiling wall plate portion 10 and an insertion portion 11 are sequentially provided on the left side wall plate portion 9 via an upward folding curve 12. Further, the right top wall plate portion 13 is extended to the bent right side wall plate portion 9'through a folding curve 14. Reference numeral 15 denotes the total length of the upper folding curve 12 between the upper folding curve 12 that is closer to the left ceiling wall plate portion 10 that constitutes the left side wall plate portion 9 and the lower folding curve 10 ′ of the bottom wall plate portion 7. The length 16 is made slightly shorter, and a cut 16 parallel to the lower folding curve 10 'is made, and there is a slight gap 17 from the lower folding curve 10'. A left side support wall portion having a parallel lower edge portion 18. Reference numeral 19 denotes an upper folding curve 12 'between an upper folding curve 12' of the right ceiling wall plate portion 9'closer to the right ceiling wall plate portion 13 and a lower folding curve 10 'of the bottom wall plate portion 7. The length is slightly shorter than the total length, and a parallel cut 16 'is made to the downward folding curve 10', and there is a gap 17 'from the downward folding curve 10'. It is a right side support wall having a folding curve 10 'and a parallel lower edge 18'. Reference numeral 20 is a notch that is shorter than the length of the folding line 12 ′ formed between the left ceiling wall plate portion 10 and the insertion portion 11 and is provided on the same line as the folding line 12. A right-angled cut 21 is formed in the insertion portion 11 at a right angle from the center of the cut 20 described above. 22 is a fold curve. Reference numeral 23 is a parallel cut portion which is parallel to the folding curve 14 formed in the right ceiling wall plate portion 13 between the right side wall plate portion 9 ′ and the right ceiling wall plate portion 13. The above is the packaging device a of the packaging container for three-way use. 6 is a seal part.

In order to assemble the packaging device a, the kagamimochi k is placed on the bottom wall plate portion 7, and the three-way combined packaging container d repeatedly placed on the placed kagamimochi k is placed in the packaging container d. The bottom portion 2'constituting the portion 2 is placed on the upper side. Then, the left and right side wall plate portions 9 and 9'and the left and right top wall plate portions 10 and 13 are bent along the folding curves 10 ', 10', 12 and 14, and the insertion portion 11 is cut in parallel. It is inserted into the portion 23 and the upper side of the right angle cut 21 is pressed. Assembling is completed by fitting the lower end portions 18, 18 'of the left side support wall portion 15 and the right side support wall portion 19 into the recessed grooves 3 constituting the packaging device a of the three-way combined packaging container.

By pressing the upper side of the right-angled cut 21 as described above, the triangular base formed by the folding curve 22 is locked to the parallel cut 23 and is not easily pulled out. Therefore, it is not necessary to attach a seal.

An embodiment of the invention according to claim 2 will be described below.

In the left side support wall portion 15, between the upper folding curve 12 and the parallel lower end edge portion 18, an inner side cut parallel to the notches 16 and 16 provided on both left and right sides of the left side support wall portion 15. Insert 25. An upper notch 26 is provided above the inner notch 25, and a lower notch 27 is provided below the inner notch, and the left side support wall is surrounded by the inner notch 25, the upper notch 26, and the lower notch 27. The reinforcing piece 24 is formed by expanding to the outside of the portion 15. 28 is a bending curve.

Further, in the right side support wall portion 19, cuts 16 ′ and 16 ′ provided on both left and right sides of the right side support wall portion 19 are provided between the upper folding curve 12 ′ and the parallel lower end edge portion 18 ′. Make a parallel inner cut 25 '. An upper cut 26 'is formed above the inner cut 25', and a lower cut 27 'is formed below the inner cut 25' to form the inner cut 25 ', the upper cut 26', and the lower cut 27 '. The reinforcing piece 24 ′ is formed by expanding to the outside of the right side supporting wall portion 19 surrounded by the above. 28 'is a bent curve.

An embodiment of the device according to claim 3 will be described below.

In the right ceiling wall plate portion 13, the left side support wall portion 15 and the right side support wall portion 19 are provided at the front end edge portion 29 and the rear end edge portion 29 ′ that constitute the right ceiling wall plate portion 13. A front side wall portion 30 and a rear side wall portion 31 having the same length are extended through folding curves 33, respectively.

An embodiment of the device according to claim 4 will be described as follows.

A front side wall portion 30 having the same length as the left side support wall portion 15 and the right side support wall portion 19 is provided at the front end edge portion 29 and the rear end edge portion 29 ′ of the right ceiling wall plate portion 13. The rear side wall portion 31 and the rear side wall portion 31 are each extended via a folding curve 33. Further, inside the front side wall portion 30 and the rear side wall portion 31, the reinforcing pieces 24, 24 ′ having the same shape as the reinforcing pieces 24, 24 ′ formed on the inside of the left side support wall portion 15 and the right side support wall portion 19 and extending outward. Reinforcing pieces 32 are formed respectively.

Reference numeral 34 denotes a folding curve 33 formed between the right ceiling wall plate portion 13, the front side wall portion 30 and the rear side wall portion 31, and lower end edges 30 ′, 31 of the front and rear side wall portions 30, 31. Between the front and rear side wall portions 30 and 31 is slightly shorter than the length. An upper notch 35 is provided above the inner notch 34, and a lower notch 35 'is provided below. 36 is a fold line connecting the upper and lower cuts 35 and 35 '.

B is the packaging device of the second embodiment, c is the packaging device of the third embodiment, and the packaging device of the fourth embodiment is the same as the packaging device c of the third embodiment, but without a reinforcing piece. (Not shown).

As a matter common to the inventions according to claims 1, 2, 3, and 4, rice other than kagami mochi may be filled with rice for offering. In addition to the rice, other items may be filled with items such as candies.

Further, in the invention described in the above-mentioned claims, after assembling, the bottom wall plate portion 7 constituting the packaging device c is upwardly provided for distribution after assembly, which is opposite to the state shown in the drawing. In this case, since the bottom wall plate portion 7 is wide, the printing space is proportionately wide, and there is an advantage that product explanations, photographs and the like are sufficient.

Further, in each of the above inventions, a seal (not shown) may be used as a connecting means for the left and right ceiling wall plate portions 10, 13.

[0046]

[Effect of the invention]

 The packaging device for a three-way combined packaging container according to the invention as set forth in claim 1, having the above-mentioned configuration, wherein the kagami mochi is placed on the bottom wall plate portion constituting the packaging device, and the kagami mochi is placed. The above-mentioned repeated three-way packaging container is covered with the bottom part forming the container part of the packaging container facing upward, and the left and right side wall plate parts and the left and right top wall plate parts are bent along each folding curve. Then, the insertion portion is inserted into the parallel cut portion, the upper side of the right-angled cut portion is pressed, and the lower end edges of the left side support wall portion and the right side support portion constitute the three-way combined packaging container. Since the assembly is carried out by fitting in the groove, the corners of the bottom of the container forming the three-way combined packaging container for wrapping rice cakes will not be pressed and crushed.

Further, in the present invention, as described above, the three-way combined packaging container and the packaging device of the present invention are firmly fixed to each other to prevent rocking, so that the transportation work can be carried out at ease.

According to a second aspect of the present invention, in the packaging device for a three-way combined packaging container, the left side support wall portion and the right side support wall portion are provided between the upper folding curve and the parallel lower end edge portion. Part and the right side wall part, the inner cuts are formed parallel to the left and right cuts, the upper cuts are formed above the inner cuts, and the lower cuts are formed below the inner cuts. Since the left side support wall portion and the right side support wall portion, which are surrounded by the upper and lower cutouts, are expanded outwardly to form the reinforcing pieces respectively, in particular, the stacked load of the left and right side support wall portions is formed. On the other hand, the durability is remarkably increased, and therefore, the corners of the container are prevented from being crushed by pressing.

According to a third aspect of the present invention, there is provided a packaging device for a three-way combined packaging container, wherein the right ceiling wall plate portion has a front end edge portion and a rear end edge portion that form the right ceiling wall plate portion. Since the front side wall and the rear side wall, which have the same length as the left side support wall and the right side support wall, are extended through folding curves, respectively, the left and right sides of the left and right support walls are formed in the concave grooves at the four corners. The advantage is that the support wall portions on both sides and the front / rear side wall portion are fitted and inserted, and the corner portions of the container portion are reliably protected from being pressed by a stacking load, and the rocking of the packaging container is surely prevented. Have

According to a fourth aspect of the present invention, in the packaging device for a three-way combined packaging container, the right ceiling wall plate portion has the front end edge portion and the rear end edge portion which form the right ceiling wall plate portion. A front side wall and a rear side wall having the same length as the left side support wall and the right side support wall are extended through folding curves, respectively, and the inside of the front side wall and the rear side wall are Since the reinforcing pieces having the same shape as the outwardly expanding reinforcing pieces formed inside the left side support wall section and the right side supporting wall section are formed respectively, the left and right sides described above are formed in the concave grooves at the four corners. Even if the support wall part and the front and rear side wall parts are fitted and the corners of the container part are pressed by the stacking load, the four reinforcing pieces enable the left and right support wall parts and the front and rear The strength with the side wall is remarkably increased, and it is surely protected from the above-mentioned pressing, and also the rocking of the packaging container is surely prevented. It has the advantages that

[Brief description of the drawings]

FIG. 1 is an assembled perspective view of a first embodiment of a packaging device for a three-way combined packaging container according to the present invention.

FIG. 2 is a partially cutaway perspective view showing a use state of the packaging device of the three-way packaging container of FIG. 1;

FIG. 3 is a longitudinal sectional view of the packaging device of FIG. 2;

FIG. 4 is a development view before the assembly.

FIG. 5 is an assembled perspective view of the second embodiment.

FIG. 6 is a partially cutaway perspective view of the packaging device of FIG. 5;

7 is a longitudinal sectional view of the packaging device of FIG.

FIG. 8 is a developed plan view of the packaging device of the second embodiment.

FIG. 9 is an assembled perspective view of the third embodiment.

FIG. 10 is a partially cutaway bevel view of the packaging device of FIG. 9;

11 is a longitudinal sectional view of the packaging device of FIG.

FIG. 12 is a developed plan view of the packaging device of FIG. 9;

FIG. 13 is a plan view of the three-way packaging container.

FIG. 14 is a side view of the packaging device of FIG.

[Explanation of symbols]

a, b, c ... Packaging equipment d ... Three-way combined packaging container k ... Kagami mochi 1 ... Placing table 2 ... Container 2 '... Bottom 3 ... Groove 4 ... Corner 5 ... Packing 6 ... Seal 7 ... Bottom wall plate 8 ... Left edge 8 '... Right edge 9 ...
..Left wall plate 9 '・ ・ ・ Right wall plate 10 ・ ・
・ Left top wall 10 ', 10' ...
11 ... Insertion part 12, 12 '... Upward bending curve 13 ... Right top wall plate part 14, 22, 28, 2
8 ', 33: bent curve 15: left support wall
16, 16 ', 20 ... notch 17, 17'
..Voids 18, 18 ': Parallel lower edge 19: Right support wall 21: Right angle cut 23:
Parallel cuts 24, 24 ', 32 ... reinforcing pieces
25, 25 ', 34 ... inner cut 26, 2
6 ', 35 ... Upper notch 27, 27', 35 '
... Lower cut 29 ... Front edge 29 '
... rear edge 30 ... front side wall 3
0 ', 31': lower edge 31: rear side wall 36: fold line

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] June 13, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 4

[Correction method] Change

[Correction contents]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuaki Tanaka 2-14, Odori Kogane, Shirane City, Niigata Prefecture (72) Inventor Kaeda Tanaka 10-38 Jingamine, Kamo City, Niigata Prefecture

Claims (4)

[Utility model registration claims] (1) The packaging of the rice cake is repeatedly used at the time of packaging, and after the packaging is released, the above described repeated state is repeated again to be used as three sides. Is formed by a concave groove, and the left edge and the right edge of the bottom wall portion of the bottom wall portion having a shape on which the mounting portion can be placed are configured symmetrically with the three-way packaging container formed by the three-way packaging container. To form a left side wall portion and a right side wall portion, and the height of the left side wall portion and the right side wall portion is slightly higher than the height of the container constituting the three-way packaging container. The left and right side wall plate portions are bent inward through the bent curve near the bottom wall plate portion, and the left top wall plate portion is sequentially extended on the bent left wall plate portion, and bent. A right top wall portion is extended on the right side wall portion, and an upward bending curve and a bottom wall portion near the left top wall portion constituting the left side wall portion are provided. Between the lower fold curve, a length slightly shorter than the total length of the upper fold curve, cut in parallel to the lower fold curve, and has a slight gap than the lower fold curve, A left support wall having a lower edge parallel to the lower fold curve is formed, and an upper fold curve and a lower fold curve near the right top wall plate constituting the right wall plate are formed. Between the upper fold curve and the lower fold curve, a cut is made slightly shorter than the entire length of the upper fold curve, and there is a slight gap from the lower fold curve. A packaging device having a configuration in which a right supporting wall portion having a folding curve and a parallel lower edge portion is formed separately, and a rice cake is placed on a bottom wall plate portion constituting the packaging device,
The three-way packaging container repeatedly placed on the mirror cake placed thereon is covered with the bottom portion constituting the container of the packaging container facing upward, and the left and right side wall plate portions and the left and right top wall plate portions are each folded curve. And the lower edges of the left support wall portion and the right support portion are fitted into concave grooves constituting the three-way packaging container, and the left and right top wall plate portions are A packaging device for a three-way packaging container characterized by being assembled and connected. 2. The left support wall and the right support wall are parallel to cuts provided on the left and right sides of the left support wall and the right wall between the upper folding curve and the parallel lower edge. Making an inner cut, making an upper cut above the inner cut, and making a lower cut below the inner cut,
2. The reinforcing piece according to claim 1, wherein the left support wall portion and the right support wall portion surrounded by the inner cut, the upper cut, and the lower cut are expanded outward to form reinforcing pieces, respectively. Packaging equipment for three-way packaging containers. 3. The right top wall portion has the same length as the left and right support wall portions at the front edge and the rear edge constituting the right top wall portion. 2. The packaging device for a three-way packaging container according to claim 1, wherein the front side wall portion and the rear side wall portion are respectively extended through folding curves. 4. The right top wall portion has the same length as the left and right support walls at a front edge and a rear edge constituting the right top wall portion. An outer wall formed by extending the front side wall and the rear side wall through a folding curve, respectively, and formed inside the front side wall and the rear side wall and inside the left side support wall and the right side support wall; 4. The packaging device for a three-way packaging container according to claim 1, wherein a reinforcing piece having the same shape as that of the reinforcing piece is formed.