JP4169297B2 - Assembled paper box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an assembled paper box for storing fluids such as liquor, various beverages, other liquids or powders, and granular materials, and more particularly to an assembled paper box suitable for holding a plastic bag for storing fluids. is there.
[0002]
[Prior art]
Paper boxes for storing liquor and various beverages are coated with a plastic film such as vinyl chloride, polyethylene or polypropylene laminated on the inner surface of cardboard as a base material to prevent liquid leakage or moisture. The ones that prevent leakage of the contents and are moisture resistant are widely used. In recent years, disposal of various types of waste has emerged as a social problem, and in particular, those with a plastic film laminated on the surface of a paper box or those coated with a plastic paint are concerned about the generation of harmful substances during the combustion of disposal. It has been pointed out that it causes pollution problems.
[0003]
[Problems to be solved by the invention]
In view of the problems of the above-mentioned conventional paper box, the present invention is a cardboard box made of cardboard having a folded flap folded into the paper box, increasing the strength of the upper surface of the paper box, without coating the inner surface of the paper box with plastic. It is an object of the present invention to provide an assembled paper box that can store a plastic bag, hold the bag, and easily separate paper and plastic, which are used for disposal.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problem , according to the invention of claim 1, in a quadrangular prism-shaped assembled paper box having four side surfaces, folding into the upper edge of a pair of side surfaces facing each other is folded into the paper box. A flap is extended, and the outer part of the flap is folded back into the paper box to form a double-folded folded piece, and the opposing folded pieces form the upper surface of the paper box. The bent leading edges of the bent pieces are in contact with each other at the center of the upper surface of the paper box, and a semicircular cutout is formed at the center of each, and the cutout is in contact with a round hole at the center of the box. The round hole has a neck portion for a spout of a plastic bag formed with a mounting portion and a flange provided at an upper portion of the mounting portion with a space between the mounting portion and the mounting portion. Assembly in which the folded back edges of the bent pieces are inserted and fixed from both sides between the flanges Paper box is provided. In the invention of claim 1, the upper edge of a pair of side surfaces opposed to each other physician, folding the flaps to be bent is extended toward the paper box in further outer portion of the flap towards the carton The outer portion and the folded flap body are formed into a double-folded folded piece, and the opposite folded pieces form the upper surface of the paper box, and the leading edge of both folded pieces is the upper surface of the paper box. A semicircular cutout is formed at the center of each other and a semicircular cutout is formed at each center, and a round hole is formed at the center of the paper box by contact with the cutout. It has become possible to hold the plastic bag stably.
[ 0005 ]
According to the second aspect of the present invention, adhesive pieces are formed on the left and right edges of the folding flap according to the first aspect of the invention, and the folding flap is bonded with the adhesive piece, thereby further enhancing the strength and stability of the upper surface of the paper box with a simple structure. It was.
[ 0006 ]
According to the invention of claim 3, in the quadrangular prism-shaped assembled paper box having four side surfaces, the folding flaps bent toward the inside of the paper box are extended on the upper edges of the pair of side surfaces facing each other, and The outer portion of the flap is folded back into the paper box and forms a U-shaped space, and the opposing folded pieces form the upper surface of the paper box, and the folded pieces are folded back. The leading edges are in contact with each other at the center of the top surface of the paper box, and a semicircular cutout is formed at the center of each, and the cutout is in contact with each other to form a round hole at the center of the box. In the hole, a neck portion for a spout of a plastic bag, in which a mounting portion and a flange provided at a space above the mounting portion are formed, is formed from both sides between the mounting portion and the flange. The folded end edge of the folded piece is inserted and fixed, while the other opposite The upper edge of the set of sides, the folding assembly paper box locking piece is extended to be inserted within the U-shaped cross-section space of the flap is provided. According to the invention of claim 3, in the rectangular columnar assembled paper box having four side surfaces, a folding flap that is bent toward the inside of the paper box is extended at the upper edge of a pair of side surfaces facing each other. The outer part is folded back into the paper box, and the outer part and the folding flap main body form a U-shaped space section, and the opposing folded pieces form the upper surface of the paper box, The bent front edges of the bent pieces are in contact with each other at the center of the upper surface of the paper box, and a round hole is formed at the center of each of the bent pieces. A locking piece to be inserted into the U-shaped space section of the flap is extended, and the locking piece is inserted and assembled into the U-shaped space section, and the strength of the upper surface of the paper box is improved. Increased stability.
[ 0007 ]
In the invention of claim 4, the upper surface of the paper box in the invention of claim 3 is composed of an inclined surface and a flat surface whose front side is low and whose rear side is high, and a space having a U-shaped cross section at the side edge having a step of the inclined surface. Folding flaps that form a part are extended, locking pieces are extended on the opposite edges of the inclined surfaces, and the locking pieces are inserted into the U-shaped space section to fix the folding flaps. In addition, the strength and stability of the upper surface of the paper box have been improved, and the stacking of the paper boxes has been facilitated to reduce the storage floor area.
[ 0008 ]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 show a paper box blank and a paper box for explaining the paper box of the present invention . The paper box 1 shown in FIG. 2 is formed by folding from the blank shown in FIG. As shown in FIG. 1, the blank 2 has a right side surface 3, a front side surface 4, a left side surface 5, a rear side surface 6 and an adhesive margin 7 which are continuously connected to each other. 8 and 8 are extended, a round hole 9 is formed in the center of the both folding flaps 8, a folding piece 10 which is bent into the paper box at the lower edge of the front side surface 4 and the rear side surface 6, and the right side surface 3, Folding pieces 11 bent into the paper box are respectively extended at the lower edge of the left side surface 5 to form a bent bottom portion in the paper box. The bottom structure is almost the same as the basic structure of a conventional cardboard box. The folding flaps 8 and 8 extend to the upper edge of the right side surface 3 and the left side surface 5, and the folding piece 10 forming the bottom portion extends to the lower edge of the right side surface 3 and the left side surface 5 and the folding piece. 11 can be arbitrarily changed such as extending to the lower edge of the front side surface 4 and the rear side surface 6.
[ 0009 ]
In order to form the paper box shown in FIG. 2 , the right side surface 3, the front side surface 4, the left side surface 5, the rear side surface 6, and the adhesive margin 7 are bent at right angles along the folding lines 13, 14, 15, 16 of the blank 2. Then, the outer shape of the paper box is formed, the folding flaps 8 on the front side surface 4 and the rear side surface 6 are folded into the paper box along the folding curve 17, respectively, and both folding flaps 8 are overlapped to form a double structure. Further, the adhesive margin 7 is bonded to the inner surface of the right side surface 3, and at the same time, the bottom folding piece 10 is bent along the folding line 12, and the folding pieces 10, 11 are bent and bonded along folding lines 18 and 19, respectively, to form the bottom. 2 is formed. Since the upper surface of the paper box is formed in a double structure, relatively thin cardboard can be used. Although not Figure shows, by extending the adhesive strip on one of mutually opposing right and left end edges of the folding flaps 8 shown in FIG. 2, also adhering the adhesive strip on the right side 3 or the left side surface 5 inner surface Thus, the strength and stability of the upper surface of the paper box can be increased. In addition, you may adhere | attach the both folding flaps 8 and 8 formed in the double structure with an adhesive agent suitably.
[ 0010 ]
3 and 4 show another example of a paper box blank and a paper box for explaining the paper box of the present invention . The paper box 1 shown in FIG. 4 (in FIG. 4, a plastic bag housed inside). The same is true for the following perspective view.) Is formed by folding from the blank shown in FIG. 3 (in FIG. 3, the same reference numerals as those in FIG. 1 are the same members). Folding flaps 20 that are located on the upper edges of the front side surface 4 and the rear side surface 6 and are formed into half-cuts on the upper surface of the paper box are extended, adhesive pieces 21 are extended to the left and right edges of the folding flaps 20, and the right side surface 3 A folding flap 22 extends from the upper edge of the left side surface 5, and a semicircular cutout 23 is formed at the center of the front edge of both folding flaps 20, 22. The folding flaps 20 and 22 are made of paperboard top half-cut thick paper extending to the upper edge of the right side surface 3, the front side surface 4, the left side surface 5 and the rear side surface 6, and the folding flap 20 and both left and right edges of the folding flap 20 The adhesive piece 21 and the semicircular cutout at the center of the tip edge can be easily formed by punching.
[ 0011 ]
In the paper box shown in FIG. 4, the folding flap 22 that is a half-cut of the paper box is folded into a paper box along a folding line 25, and the leading edges of the folding flaps 22 abut each other at the center of the top surface of the paper box. The formed semicircle is in contact with each other to form a round hole, and then the folding flap 20 is folded into the paper box along the folding line 17 so that the leading edges of the folding flaps 20 abut each other at the center of the top surface of the paper box. Are formed in a round hole, and the adhesive piece 21 is bent at a folding line 24 and bonded to the outer surface of the right side surface 3 and the left side surface 5, and the folding flaps 20 and 22 as shown in FIG. While being overlapped to form a double structure, the round holes formed by the abutment of both folding flaps 20 and 22 match to form the paper box 1 of FIG.
[ 0012 ]
In addition, you may adhere | attach the folding flaps 20 and 22 overlapped with the adhesive agent. Further, in the round hole 9, an outlet neck portion of a plastic bag to be stored in a paper box 1 described later is inserted, and a cap K is screwed onto the outlet neck portion. Further, the right side surface 3, the front side surface 4, the left side surface 5, the rear side surface 6, and the glue margin 7 are bent at right angles by folding lines 13, 14, 15, and 16 of the blank 2 to form the outer shape of the paper box. The bottom part is the same as the paper box shown in FIG. 2 in that the bottom part is formed by folding the folding piece 10 at the lower edge of the rear side surface 6 and the right side surface 3 and the folding piece 11 at the lower edge of the left side surface 5.
[ 0013 ]
5 and 6 show an example of the embodiment of the invention of claim 1 , and the paper box 1 shown in FIG. 6 is formed by folding from the blank shown in FIG. 5 (FIG. 5, the folding flaps 26 extending on the upper edges of the front side surface 4 and the rear side surface 6 pass through the center of the round hole 9 formed in the center, as shown in FIG. An inner folding line 27 parallel to the folding line 17 is formed, and an adhesive piece 28 is extended on the outer edge of the folding flap 26.
[ 0014 ]
In the paper box according to the first aspect of the invention, the folding flap 26 is folded into the paper box along the folding line 17, the outer portion 26 b of the folding flap 26 is folded back along the inner folding line 27, and doubled with the main body 26 a of the folding flap 26. A bent piece having a structure is formed, and an adhesive piece 28 is bent along a folding line 29 to be bonded to the inner surfaces of the front side surface 4 and the rear side surface 6, and both bent pieces are outer edges of the bent piece 30 as shown in FIG. Are in contact with each other at the center of the upper surface of the paper box, and a semicircular cutout formed in the inner folding line 27 is in contact with each other to form a round hole, whereby the paper box 1 shown in FIG. 6 is formed.
[ 0015 ]
The right side surface 3, the front side surface 4, the left side surface 5, the rear side surface 6 and the glue margin 7 are bent at right angles along the folding lines 13, 14, 15 and 16 of the blank 2 to form the outer shape of the paper box. 10 and the folding piece 11 are folded and assembled to form the bottom, which is the same as the paper box shown in FIG. Also, FIG. 4 shows that a pouring mouth neck portion of a plastic bag is inserted into a round hole formed in contact with a semicircular notch, and a cap K is screwed onto the pouring mouth neck portion . It is the same as the paper box .
[ 0016 ]
FIG. 7 shows an embodiment of a paper box blank according to the invention of claim 2 , in which adhesive strips 31 are extended at both left and right edges of the folding flap 26 (the same reference numerals as in FIG. 5 in FIG. 7). Although the illustration is omitted, the adhesive piece 31 is bent at a fold line 32 on the extension line of the fold lines 13, 14, 15, 16 and bonded to the right side 3, the left side 5 outer surface or the inner side. In addition, since the folding flap 26 on the upper surface of the paper box is fixed to the side surface of the paper box by the adhesive piece 28 and the adhesive pieces 31 at the left and right end edges, the strength and stability can be further enhanced from the upper surface of the paper box in the invention of claim 1 .
[ 0017 ]
8 and 9 show an embodiment of the invention of claim 3 , and the paper box 1 shown in FIG. 9 is formed by folding from the blank shown in FIG. 8 (the figure in FIG. 8). 1 is the same member), a folding flap 33 is extended at the upper edge of the front side surface 4 and the rear side surface 6, and a round hole 9 is formed at the center of the upper surface of the paper box of the both folding flaps 33, 33, An inner folding line 27 passing through the axis of the round hole 9 and parallel to the folding line 17 is formed. On the other hand, two locking pieces 34 are extended on the upper edges of the right side surface 3 and the left side surface 5, respectively. . In addition, in FIG. 8, although the blank 2 is described as what the back side surface 6, the right side surface 3, the front side surface 4, the left side surface 5, and the glue margin part 7 continued in series, the form of a blank is set arbitrarily. The extending positions of the folding flap 33 and the locking piece 34 can be arbitrarily changed.
[0018]
In the paper box 1 according to the invention of claim 3 , the folding flap 33 is folded into the paper box along the folding line 17, and the outer side portion 33b is folded back inside the paper box along the inner folding line 27, so that the folding flap main body 33a and the outer side portion 33b A space portion having a U-shaped cross section is formed, and both bent pieces are semi-circular as shown in FIG. 9 in which the outer edges of the bent pieces 35 are in contact with each other at the center of the upper edge of the paper box and are formed in the inner folding line 27. Are formed in a round hole, and on the other hand, a locking piece 34 extending at the upper edge of the right side surface 3 and the left side surface 5 is bent at a folding line 36, and the folding flap 33 has a U-shaped cross section. The paper box 1 shown in FIG. 9 is formed.
[ 0019 ]
Further, the right side surface 3, the front side surface 4, the left side surface 5, the rear side surface 6, and the glue margin 7 are bent at right angles by folding lines 13, 14, 15, and 16 of the blank 2 to form the outer shape of the paper box. 2 is the same as the paper box shown in FIG. 2 in that the bottom portion is formed by folding the folding piece 10 at the lower edge of the rear side surface 6 and the right side surface 3 and the folding piece 11 at the lower edge of the left side surface 5 . The point of inserting the outlet neck of the plastic bag into the round hole formed in contact with the notch and screwing the cap K onto the outlet neck of the bag is the same as the paper box shown in FIG. is there.
[ 0020 ]
The locking piece 34 extending to the upper edge of the right side surface 3 and the left side surface 5 has two obliquely upper portions on the right side surface 3 and the left side surface 5 and on both sides of the folding line 36. Cut lines 37 are formed, and a fold line 38 parallel to the fold line 36 is formed at the other end of the two cut lines 37. The locking piece 34 is inserted into a space portion having a U-shaped cross section of the folding flap 33 while being bent at a folding line 36 and a folding line 38. The cut line 37 is preferably formed to be inclined with respect to the folding line 36 by an angle of about 20 to 70 °. If the angle θ is 70 ° or more, the strength of the paper box is unreasonable. By assembling the folding flap 33 and the locking piece 34, the strength and stability of the upper surface of the paper box are further improved.
[ 0021 ]
10 and 11 show an embodiment of the invention of claim 4 , and the paper box 1 shown in FIG. 11 is formed by folding from the blank shown in FIG. 10 (the figure in FIG. 10). 8, the front side surface 4 is formed to be shorter than the right side surface 3 and the left side surface 5, a folding flap 39 is extended to the upper edge of the front side surface 4, and the rear side surface 6 is connected to the right side surface 3. The left side surface 5 has the same length as that of the left side surface 5, a margin 41 is provided between the folding line 17 and the folding line 40 on the upper edge of the rear side surface 6, and a folding flap 42 is extended to the outer edge of the folding line 40. A round hole 9 is formed at the center of the folding flaps 39 and 42, and an inner folding line 27 is formed at the axial center of the round hole 9 and parallel to the folding lines 171 and 17.
[ 0022 ]
On the other hand, the right side surface 3, the upper edge of the left side surface 5, before the side surface 4 right and left sides, subject to oblique folding line 43, the folding line 44 located on an extension of the rear side 6 the top edge folding line 17 There is articulated, the two locking pieces 45 is extended to該折curve 43 the outer edge, the adhesive strip 46 on the folding line 44 the outer edge is extended. Further, folding pieces 47 and 48 which are bent into the paper box are respectively extended at the lower edges of the front side surface 4, the rear side surface 6, the right side surface 3, and the left side surface 5. The folding pieces 47 and 48 are different in shape from those of the inventions of claims 1 to 3 , but have substantially the same structure as the basic structure of a conventional cardboard box.
[ 0023 ]
In the paper box according to the fourth aspect of the invention, the folding flap 39 is folded into the paper box along the folding line 171 , the folding flap 42 is folded into the paper box along the folding line 17, and the folding flap 42 is further folded into the paper box along the folding line 40. In addition to folding, the outer portions 39b, 42b of the folding flaps 39, 42 are folded into the paper box along the inner folding line 27, and the folding flap main body 39a and the outer portion 39b, and the folding flap main body 42a and the outer portion 42b are U-shaped in cross section. The outer edges of both bent pieces are in contact with each other at the center of the inclined surface, and a semicircular cutout formed in the inner folding line 27 is in contact with each other to form a round hole. The
[ 0024 ]
On the other hand, the locking piece 45 on the upper edge of the right side surface 3 and the left side surface 5 is bent into the paper box along the folding line 43, and the locking piece 45 is inserted into the space portion having the U-shaped cross section and the adhesive piece 46 is folded. Bending at a curve 44 and adhering from both sides of the back of the margin 41 between the folding lines 17 and 40 on the rear side surface 6 to form a plane on the upper surface of the paper box, as shown in FIG. The paper box 1 shown in FIG. 11 is formed by the inclined surface 50 and the flat surface 51 that are in contact with each other at the center. In addition, when inserting the latching piece 45 into the space part having the U-shaped cross section, it is performed by the cooperative action of the folding lines 43 and 38 as in the third aspect .
[ 0025 ]
In the inclined surface 50, the cap K that is screwed to the dispensing neck is inclined in the direction of the front side surface 4, and the upper edge of the cap K is flush with the flat surface 51. Therefore, when the paper boxes are stacked, the paper boxes stacked on the upper side are supported by the upper edge of the cap K and the flat surface 51, so that a plurality of paper boxes can be sequentially stacked on the upper side. The right side surface 3, the front side surface 4, the left side surface 5, the rear side surface 6, and the glue margin 7 are bent at right angles along the folding lines 13, 14, 15, 16 of the blank 2 to form the outer shape of the paper box. 2 is the same as the paper box shown in FIG. 2 in that the bottom side is formed by folding and assembling the folding pieces 47 and 48 at the lower edge of the rear side surface 6 and the right side surface 3 and the left side surface 5 . 4 is the same as the paper box shown in FIG. 4 in that the extraction neck of the plastic bag is inserted into the round hole formed and the cap K is screwed onto the extraction neck.
[ 0026 ]
FIG. 12 shows an example in which a plastic bag is stored in the paper box shown in FIG. 6. The plastic bag P has a size that can be stored inside the paper box 1 and is placed in the mouth of the bag P. A neck portion 101 is attached, and the extraction mouth neck portion 101 is formed with a male screw 102 to which a screw cap is to be screwed on an outer peripheral surface, and an attachment portion 103 and a base portion of the extraction mouth neck portion 101. A flange 104 is provided at a slight upper portion of the mounting portion 103 with a space therebetween, and is integrally formed with the pouring neck portion 101. The mounting portion 103 is formed in a substantially boat-shaped cross section with the upper plate 105 and both side wall portions 106, and the inner hole 107 of the pouring neck portion 101 communicates with the inner hole 108 of the mounting portion 103. The edges of the plastic bag P are heat-sealed to the side surfaces of the side wall portions 106 of the mounting portion 103.
[ 0027 ]
The plastic bag P has a semicircular cutout formed at the front edge of the bent piece 30 on the upper surface of the paper box, and the pouring neck portion 101 and the flange 104 are taken out of the paper box, and the mounting portion 103 is provided with the attachment portion 103. the interior of the box, to secure the pouring for opening the neck 101 by inserting both bending piece 30 from both sides between the mounting portion 103 and the flange 104. The mounting portion 103 is not limited to a boat having a cross-sectional shape, and the cross-section may be cylindrical or rectangular as long as it can be inserted into the paper box. Further,-out semicircular notches bent piece folded folding write flap outer portions that put the present inventions is, considering the ease in assembling the dispensing for opening the neck 101 of the plastic bag P, You may provide a several cut | interruption in the outer periphery radial direction of a round hole to such an extent that it does not affect the intensity | strength of a folding flap.
[ 0028 ]
【The invention's effect】
According to the invention of claim 1, the folding flap extended on the upper surface of the paper box has the outer side of the folding flap folded back, and each folding flap is formed in a double structure with the folding flap body and the outer side. Therefore, the use of relatively thin cardboard is possible, and the strength of the upper surface of the paper box is high and the stability is high, so that it is possible to securely hold the pouring neck of the plastic bag to be stored. The punching process, section removal process, folding process, etc. are the same as in the past, and it is possible not only to manufacture by hand, but also to perform mechanical continuous manufacturing, which contributes to improving production efficiency and reducing manufacturing costs. Can do. Also, even when transporting or transporting liquid or granular materials in a plastic bag, there is no risk of damage to the plastic bag due to vibrations associated with transport or transportation, and the paper box is damaged and the plastic bag is There is no risk of jumping out of the paper box . In addition, since the outer portion of the folding flap is folded back and each folding flap is formed in a double structure with the folding flap body and the outer portion, it is not necessary to separately form separate folding flaps to be overlapped, The structure is simple, and the strength and stability of the top of the paper box are excellent.
[ 0029 ]
According to the invention of claim 2 , since the folding flap is securely fixed as the upper surface of the paper box by the adhesive piece of the outer edge of the folding flap and the adhesive piece of the left and right end edges of the invention of claim 1 , the folding flap has both strength and stability. Are better.
[ 0030 ]
According to the invention of claim 3 , the other pair of opposing side upper edge locking pieces are inserted into the U-shaped space portion formed by the folded piece of the folding flap, Since the folding flap is fixed, the strength and stability of the upper surface of the paper box are further improved, and the pouring neck of the plastic bag stored in the paper box can be securely held.
[ 0031 ]
According to the invention of claim 4, the upper surface of the paper box is formed into an inclined surface and a flat surface, and the outlet neck of the plastic bag stored in the paper box is attached to the inclined surface, and the outlet neck Since the upper edge of the cap that is screwed to the portion is made flush with the flat surface, a plurality of paper boxes can be stacked on the paper box, and the storage and storage of the paper box is easy.
[Brief description of the drawings]
FIG. 1 is a developed plan view of a paper box blank for explaining a paper box of the present invention .
2 is a perspective view of a paper box formed from the blank of FIG. 1. FIG.
Figure 3 is another example open plan view exhibition carton blank for illustrating a paper box of the present invention.
4 is a perspective view of a paper box formed from the blank of FIG. 3. FIG.
5 is a developed plan view of an example of a blank implementation.
6 is a perspective view of a paper box formed from the blank of FIG. 5. FIG.
FIG. 7 is a developed plan view of another example of implementation.
FIG. 8 is a developed plan view of a blank according to another example.
9 is a perspective view of a paper box formed from the blank of FIG. 8. FIG.
FIG. 10 is a developed plan view of a blank according to another example.
11 is a perspective view of a paper box formed from the blank of FIG.
FIG. 12 is a side view of an essential part of an example in which a plastic bag is stored in a paper box.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Assembling paper box 3 Right side surface 4 Front side surface 5 Left side surface 6 Rear side surface 7 Glue margin part 8, 20, 22, 26, 33, 39, 42 Folding flap 9 Round hole 10, 11, 47, 48 Folding piece 12, 13, 14, 15, 16, 17, 171, 18 , 19 , 20, 24, 25, 29, 32, 36, 38, 40, 43, 44 Folding curve 21, 28, 31, 46 Adhesive strip 27 Inner folding line 30, 35 , 49 Bending piece 37 Cutting line 41 Margins 34, 45 Locking piece 50 Inclined surface 51 Planar K Cap P Plastic bag

Claims (4)

In a square columnar assembled paper box having four side surfaces, a folding flap that is bent toward the inside of the paper box is extended on the upper edge of a pair of side surfaces that face each other, and the outer portion of the flap is located inside the paper box. The two folded pieces facing each other form the upper surface of the paper box, and the folded leading edges of the two folded pieces touch each other at the center of the upper surface of the paper box. And a semicircular cutout is formed at the center of each, and the cutout is in contact with each other, and a round hole is formed at the center position of the box . The neck portion for the spout of the plastic bag formed with a flange provided at an upper portion of the portion is spaced from the both ends between the mounting portion and the flange, and the leading edge of the folded pieces is folded back. Assembled paper box that is inserted and fixed . Left and right end edges of the folding flap body which extends over the edge of a pair of side surfaces opposed to each other, assembled carton according to claim 1, wherein the adhesive strip is extended. In a square columnar assembled paper box having four side surfaces, a folding flap that is bent toward the inside of the paper box is extended on the upper edge of a pair of side surfaces that face each other, and the outer portion of the flap is located inside the paper box. And the opposite folded pieces form the upper surface of the paper box, and the folded leading edges of the folded pieces are formed at the center of the upper surface of the paper box. A semicircular cutout is formed at the center of each other, and the cutout is in contact with each other, and a round hole is formed at the center of the box . The neck portion for the spout of the plastic bag formed with a flange provided at an upper portion of the portion is spaced from the both ends between the mounting portion and the flange, and the leading edge of the folded pieces is folded back. There are fixedly inserted, while the upper edge of the other pair of side surfaces opposed to each other, wherein Assembly paper box locking piece is extended to insert the U-shaped cross section space of the write flap. The front side is formed low, the upper surface of the paper box is composed of an inclined surface and a flat surface, and a folding flap that forms a U-shaped space section is extended to the side edge having a step of the inclined surface, and the inclined surfaces face each other. 4. The assembled paper box according to claim 3 , wherein a locking piece is extended at the edge.

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