JPH0711522U - Paperboard folding airtight container - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a folding and airtight container made of paperboard, easy to assemble and assemble, easy to fold, unfold, and easy to seal, easy to open, environmentally friendly, and incinerable. [Constitution] It consists of a main board and a top board of a paperboard material laminated on both sides with a flexible composite packaging material (barrier material). The main board is subjected to the required creases and the required parts are adhered to form a rectangular parallelepiped closed container. Foldable without exposing the cut edge of the material inside the container.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a foldable paperboard closed container capable of storing medical waste, ink, paint, agricultural chemicals, solids, liquids, powders, and the like.

[0002]

[Prior art]

 Conventional foldable paper-made closed containers are described in Japanese Utility Model Publication No. 53-106324 and Japanese Utility Model Publication No. 60-90120.

However, in all the documents, the structure of the material of the container, the structure of the top plate and the main plate, the structure of the closed container, especially the structure of the crease, and the structure of the foldable crease are specifically described. I haven't.

[0004]

[Problems to be solved by the device]

 The present invention is a paperboard closed container, easy to manufacture, easy to fold and unfold, easy to seal and unseal, surely lower the height when folded, and a storage space. The challenge is to provide a product that can be used in an environment that does not leak and that can be incinerated, because it requires less space and can be stored.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention is made of a paperboard material in which a flexible composite processing packaging material is laminated on both sides of a packaging paperboard. ) -Shaped main plate and a top plate, the main plate being horizontally long and adjacent to each other through four vertical creases that are parallel to the longitudinal direction. Folding side plate piece part, folding side plate part, folding side plate part, folding part It is divided into a side plate portion and a folding side plate piece portion, and a vertical adhesive flap is formed on one edge side of the folding side plate piece portion through a vertical edge crease, and the main plate is 90 ° in each vertical crease. It is folded inward, the vertical adhesive flap is folded 180 ° outward with the vertical edge crease, and the ends of the two folding side plate pieces are adhered to the inner and outer surfaces of the vertical adhesive flap, respectively. Is formed, the cross section is rectangular, and the The width of the adhesive folding side plate portion and the width of the folding side plate portion when the strip is formed are equal, and the widths of both folding side plate portions are equal to each other and the width of the folding side plate portion is the same. A length not larger than the width, and a top crease near the upper edge, a middle crease in the middle, and a bottom crease near the lower edge are formed on the main plate in parallel with the lateral direction. , The folding flaps are provided with top flap pieces, and the folding flaps and folding flaps are provided with top flaps, and the top flap pieces and the top flaps have vertical creases at the upper ends of the vertical creases. A right-angled notch that does not reach is formed, and between the top crease and the ground crease, there is a vertically long folding side plate piece in the folding side plate piece, in both folding side plate parts, a vertically long folding side plate, and in the folding side plate part. A vertically long folding side plate is formed, and the both folding side plates are formed. From the intersection of the heavenly creases and the vertical creases, the creases for the heavenly folds are formed obliquely downward to each other at the same angle as the vertical creases to the upper fold intersections, which are the intersections of the creases for the heavenly creases. Further, the ground oblique creases are formed obliquely upward from the intersections of the ground creases and the vertical creases at the same angle as the vertical creases, and the ground fold creases are formed up to the lower fold intersection which is the intersection of the ground creases. Between the lower folding intersection and the lower folding intersection, a vertical folding crease is formed in the center of each folding side plate in the vertical direction, and the upper folding intersections and the lower folding intersections of the two folding side surfaces facing each other are formed into a tubular body. The upper fold crease and the lower fold crease are formed by crossing either the adjacent fold side plates or the adhesive fold side faces and connecting them in the lateral direction in the opposite directions when they are opened. Between the creases , Folding bottom flap pieces adjacent to both folding side plate pieces, both folding bottom flaps adjacent to both folding side plates, and folding bottom flaps adjacent to folding side plates via the vertical creases, respectively. The space between the ground creases and the bottom creases is half the width of the folding side plate portion, and each of the fold-down bottom flaps is inclined 45 ° downward from both the intersections of the ground creases and the vertical creases. Toward the center of the folding bottom flap, the sloping bottom creases are formed up to the bottom folding intersection, which is the intersection of both sloping bottom creases and the intersection with the bottom creases. Is divided into a central triangular piece and two triangular pieces on the vertical crease side, and a bottom adhesive flap portion is formed on the lower edge side of the bottom crease, and the bottom adhesive flap portion extends in the vertical direction from the both folding intersections to the lower edge. To the bottom adhesive flap A vertical bottom crease which is divided into two bottom adhesive flaps is formed, and the top plate has a square shape in which one side is equal to the width of the folding side plate portion and the other side is equal to the width of the folding side plate portion. Of the tubular body made of a main plate obtained by adhering the vertical adhesive flaps, and the adhesive flaps are extended through the creases on each of the four sides and folded back by 180 °. A ceiling flap and an adhesive ceiling flap formed by adhering the two ceiling flap pieces together are folded 90 ° inward of the tubular body in the ceiling crease, and the folded adhesive flaps are inserted outside. The top surface as a container is adhered to each adhesive flap on the periphery of the top plate, and the folding side plate portion and the adhesive folding side plate portion are folded inward at 90 ° in the ground crease, and both folding side plate portions are formed. Is folded 90 ° outwards , In each slant bottom crease, both folding bottom flaps are folded and formed in contact with the central triangular piece and both side triangular pieces, and the bottom adhesive flap part is bent outward in the bottom crease and is divided in the vertical bottom crease. Both bottom adhesive flaps are brought into contact with each other, and the bottom adhesive flap portion composed of the abutted bottom adhesive flaps is folded until it comes into contact with the folded bottom flap, and further protrudes outward from the tubular body in a triangular shape. The protruding bottom part consisting of the central triangular piece and the triangular pieces on both sides is folded inward by 180 ° and the respective contact surfaces are bonded to form the bottom surface as a container, and the injection port is attached to the injection hole to form a closed container. The two folding side faces are folded into the container contents with a fold-crease, a diagonal crease and a vertical crease, respectively, and the fold side and the adhesive fold side are respectively folded up and folded. Folded outwardly at either arouses tatami crease has a configuration which enables folding in a Z-shape when viewed from the folded side surface.

[0006]

[Action]

 According to the present invention, the constituent materials of the container are clearly defined, the assembly and production are easy, the folding and unfolding operations are easy, the sealing and unsealing are easy and reliable, and the height when folded is lower. Therefore, it requires less storage space, is environmentally friendly, and can be incinerated.

[0007]

【Example】

 The configuration of the present invention will be described below with reference to embodiments shown in the drawings.

As shown in FIG. 1 and FIG. 2, a rectangular or square main board 1 and a top board which are made of a paperboard material in which a flexible composite packaging material is laminated on the front and back surfaces of a packaging paperboard to match the shape of the product. 2 and.

The main plate 1 has a horizontally long rectangular shape, and the folding side plate piece portion 4, the folding rule plate portion 5, and the folding side plate portion 6 that are adjacent to each other via four vertical creases 3 that are parallel to the vertical direction. The folding side plate portion 7 and the folding side plate piece portion 8 are divided.

A vertical adhesive flap 11 is formed on one end edge (right end edge in FIG. 1) of each of the folding side plate pieces 4 and 8 with a vertical edge cleaner 10 interposed therebetween.

The main plate 1 is folded inward by 90 ° at each vertical crease 3, 3 and the vertical adhesive flap 11 is folded outward by 180 ° by the vertical edge crease 10, so that both folding side plate pieces 4, The end portions of 8 are adhered to the inner and outer surfaces of the vertical adhesive flap to form the adhesive folding side plate portion 74, and as shown in FIG. 5, a transversely rectangular or square cross-section is formed into a vertically long tubular body. .

The width of the adhesive folding side plate portion 74 and the width of the folding side plate portion 6 of the tubular body are equal, and the widths of both the folding side plate portions 5 and 7 are equal to each other, and The length is not larger than the width of the tatami side plate portion 6.

Further, the main plate 1 is formed with a top crease 12 near the upper edge, an intermediate ground crease 13 near the upper edge, and a bottom crease 14 near the lower edge, which are parallel to the horizontal direction.

Above the ceiling cleats 12, the folding side plate pieces 4 and 8 are provided with ceiling flaps 15 and 16, respectively, and the folding side plate portions 5 and 7 are provided with flaps 17 and 18, respectively. A top flap 19 is formed on the folding side plate portion 6.

As shown in FIG. 4, right-angled cuts 20 and 20 that do not reach the top creases 12 are provided at the upper ends of the vertical creases 3 and 3 of the top flap pieces 15 and 16 and the top flaps 17, 18 and 19, respectively. Has been formed.

Between the top crease 12 and the ground crease 13, vertically long folding side plate pieces 21 and 25 are formed at the folding side plate pieces 4 and 8, respectively, and vertically at the folding side plate portions 5 and 7, respectively. Long folding side plates 22 and 24 are formed, and the folding side plate portion 6 forms a vertically long folding side plate 23.

The folding side plate 22 is provided with heavenly creases 30 and 31, respectively, which are inclined at an equal angle from both intersections 26 and 27 of the sky crease 12 and the vertical creases 3 and 3 and are directed obliquely downward toward the center. The upper folding intersection 32, which is the intersection of the folding creases 30 and 31, is formed.

Further, the ground oblique creases 40, 41 are inclined at an angle upward from the intersections 36, 37 of the ground creases 13 and the vertical creases 3, 3 toward the center, respectively. , 41, which is the intersection of the lower folding intersections 42.

On the other hand, on the folding side plate 24, the creases 12 and the vertical creases 3 and 3 intersect at the intersections 28 and 29 at equal angles to the center of the creases 3 and 34, respectively. Is formed up to the upper folding intersection 35, which is the intersection of the heavenly diagonal creases 33, 34.

The ground creases 13 and the vertical creases 3 and 3 are formed at the intersections 38 and 39 at an equal angle to the upper center of the slope, and the ground oblique creases 43 and 44 are respectively the oblique oblique creases 43. , 44, which is the intersection of the lower folding intersections 45.

A vertical folding crease 46 is vertically formed between the upper folding intersection 32 and the lower folding intersection 42 at the center of the folding side plate 22.

A vertical folding crease 47 is formed at the center of the folding side plate 24 in the vertical direction between the upper folding intersection 35 and the lower folding intersection 45.

Further, between the upper folding intersections 32, 35 of the folding side surfaces 22, 24 facing each other, an upper folding cleat 48 is formed laterally across the folding side plate 22, the folding side plate 23, and the folding side plate 24. Has been done.

A lower folding crease 49 is formed in the lateral direction from the lower folding intersection 42 of the folding side plate 22 to the edge of the adjacent folding side plate piece 21, and the lower folding intersection 45 of the folding side plate 24 is adjacent to the lower folding intersection 45. A lower folding crease 50 is formed laterally up to the edge 9 on the side of the tatami side plate piece 25.

The lower folding creases 49, 50 are connected to each other when the main plate 1 is bent by the vertical creases 3, 3 and the vertical edge creases 10 to form a tube-shaped adhesive, and are integrally connected to each other. It becomes 79.

Between the ground crease 13 and the bottom crease 14, a folding bottom flap piece 51 is adjacent to the folding side plate piece 21, a folding bottom flap 52 is adjacent to the folding side plate 22, and a folding side plate. 23, a folding bottom flap 53 is adjacent to the folding side plate 24, a folding bottom flap 54 is adjacent to the folding side plate 24, and a folding bottom flap piece 55 is adjacent to the folding side plate piece 25. 3 are formed adjacent to each other.

The distance between the ground crease 13 and the bottom crease 14 is half the width of the folding side plate portions 5, 7.

The folding bottom flap 52 is inclined downward 45 ° from both intersections 36 and 37 of the ground crease 13 and the vertical creases 3 and 3 toward the center of the folding bottom flap 52. Is formed up to the bottom folding intersection 58 which is the intersection of the both oblique bottom creases 56 and 57 and also the intersection with the bottom creep 14.

The folding bottom flaps 54 are inclined 45 ° obliquely downward from both intersections 38, 39 of the ground creases 13 and the vertical creases 3, 3 toward the center of the folding bottom flaps 54, respectively. Is formed up to the bottom folding intersection 61, which is the intersection of the both oblique bottom creases 59 and 60 and also the intersection with the bottom creep 14.

Therefore, the folding bottom flap 52 is divided into the central triangular piece 62 on the side of the ground crease 13 and the both side triangular pieces 63, 64 on the side of the vertical creases 3, 3 via the inclined bottom cleats 56, 57, and the folding bottom flap 54. Is divided into a central triangular piece 65 on the side of the ground crease 13 and both triangular pieces 66, 67 on the side of the vertical creases 3 and 3 via the inclined bottom creases 59 and 60.

A bottom adhesive flap portion 68 is formed on the lower edge side of the bottom crease 14, and vertical bottom creases 69 are formed in the vertical direction from the bottom folding intersections 58 and 61 of the bottom attachment flap portion 68 to the lower edge. , 70 are formed, and the bottom adhesive flap portion 68 is divided into bottom adhesive flaps 71, 72 by the vertical bottom cleats 69, 70.

As shown in FIG. 2, the top plate 2 has a rectangular or square shape in which one side is equal to the width of the folding side plate portion 6 and the other side is equal to the width of the folding side plate portions 5 and 7 in a pear shape. A hole 73 is provided, and adhesive flaps 82, 82 are provided on the four sides through creases 83, 83, respectively, and the adhesive flaps 82, 82 are folded back 180 °.

The formation of the paper packaging container is performed as follows. First, in the main plate 1, the folding side plate pieces 4, 8, the folding side plate portions 5, 7 and the folding side plate portion 6 are folded in the same direction (inward) by 90 ° in each of the vertical creases 3, 3. In the vertical edge crease 10, the vertical adhesive flap 11 is folded 180 ° in the opposite direction (outward).

As shown in FIG. 3, the vertical adhesive flap 11 is adhered to the end edges of the folding side plate pieces 4 and 8 so that the folding side plate portion 6 is joined by the folding side plate pieces 4 and 8. An adhesive folding side plate portion 74 having the same shape as that of the adhesive folding side plate portion 74 is formed, and the adhesive folding side plate portion 74, both folding side plate portions 5 and 7 and the folding side plate portion 6 have a rectangular cross section as shown in FIG. A square tubular body is formed.

As shown in FIGS. 10 and 11, an adhesive ceiling flap 75 formed by adhering the ceiling flaps 17, 18, 19 and both ceiling flap pieces 15, 16 to each other is provided in the ceiling crease 12 in the tubular body. Each of the top flaps 17, 18 and 19 and the adhesive top flaps 75 and the adhesive flaps 82 and 82 that are inserted inside with the top flaps 17, 18 and 19 folded inward. , 82 are bonded together to form the top surface of the paper-made closed container.

In the ground crease 13, the folding side plate portion 6 and the adhesive folding side plate portion 74 are folded inward by 90 °, and both folding side plate portions are bent outward by 90 °, and at the same time, the beveled bottom crease 56. , 57, the folding bottom flap 52 is formed by folding and abutting on the central triangular piece 62 and both side triangular pieces 63, 64, and in the inclined bottom creases 59, 60, the folding bottom flap 54 has the central triangular piece 65 and both side triangular pieces 66, 66. It is formed in a folded contact with 67.

The bottom adhesive flap portion 68 is bent outward in the bottom crease 14, and at the same time, halved in the vertical bottom crease to form bottom adhesive flaps 71 and 72. Both bottom adhesive flaps 71 and 72 are abutted and adhered to each other. To be done.

Next, as shown in FIG. 6, the bottom adhesive flap formed by adhering the bottom adhesive flaps 71 and 72 is folded until it comes into contact with the central bottom flap 53, and further protrudes outward from the tubular body in a triangular shape. A protruding bottom portion 76 composed of the central triangular piece 62 and both side triangular pieces 63 and 64, and a protruding bottom portion 77 composed of the central triangular piece 65 and both side triangular pieces 66 and 67 are formed.

Both of the projecting bottom portions 76 and 77 are folded inwardly by 180 ° and are brought into contact with the central bottom flap 53 and the adhesive bottom flap pieces 51 and 55, and the abutting surfaces are adhered to each other, as shown in FIG. The bottom of the container is formed, and the paper-made closed container is completed.

In the paper packaging container, the folding side plate 22 is folded inward by the double-sided diagonal folding creases 30 and 31, the double-sided diagonal folding creases 40 and 41, and the vertical folding crease 46, and the folding side plate 24 is formed. It is folded inward by the double fold creases 33 and 34, the double fold creases 43 and 44, and the vertical fold crease 47, and at the same time, in the upper fold crease 48 and the lower fold crease 79 as shown in FIG. It is folded inward and folded into a Z shape when viewed from the folding side surfaces 22 and 24.

As shown in FIGS. 8 and 9, an injection port 78 can be appropriately bonded and adhered to the injection hole 73, and the injection port 78 has a shape not related to folding of a paper-made closed container. Can be attached.

As shown in FIG. 4, since the right-angled cut 20 does not reach the sky crease 12, very short cut creases 80, 80 reaching the sky crease 12 should be formed in the extension of the square cut 20. Thus, as shown in FIG. 5, when the top flaps 17, 18, 19 and the adhesive top flap 75 are bent inward and the top plate 2 is adhered, the top folds are bent by the notch creases 80 and overlapped. It is adhered to the four corners of No. 2 and the inside of the container at the corner is not exposed to the outside, and it is surely a closed container.

As shown in FIGS. 10 and 11, when folding the top flaps 17, 18, 19 and the adhesive top flap 75, the top plate 2 in which the adhesive flaps 82, 82 have been folded back is inserted first. As shown in FIG. 5, a fixing material 81 having a size substantially equal to that of the in-container method is inserted, and the bending and the adhesion with the adhesive flaps 82, 82 of the top plate 2 are performed by using a separately provided crimping material (not shown). By performing pressure bonding from the outside of the top plate 2 or the like in the direction of the fixing material 81, the adhesion is surely performed. The fixing material 81 is made of wood, metal or the like. After bonding, the pressure bonding material is removed, and the fixing material 81 is taken out.

When the bottom plate side is folded and bonded, a folding bonding auxiliary fixing material (not shown) is inserted from the injection hole 73 of the top plate 2 to the bottom plate portion to ensure the folding and bonding. The auxiliary fixing material is also made of wood, metal or the like, if necessary, and is adhered to another crimping material from the outside, and after adhering, each is removed.

The above-described various kinds of bonding are performed by thermally bonding and bonding the laminating surface and the injection port using an electromagnetic wave seal, a high frequency seal, a heat seal, or the like.

[0046]

[Effect of device]

 In the paperboard container with the configuration of the present invention, the cut edge of the paperboard material does not touch the contents at all, the assembly and production are easy, the folding and unfolding operations are easy, and the sealing and opening are easy and reliable. Moreover, the height when folded can be kept lower, which means that there is less storage space for empty containers, easy delivery, easy storage of stored items, no leakage, and environmental friendliness. It is good and can be incinerated as it is, depending on the stored items, and the injection port can be sorted and reused at the reprocessing plant.

[Brief description of drawings]

FIG. 1 is a development view of a main plate according to an embodiment.

FIG. 2 is a development view of a top plate according to an embodiment.

FIG. 3 is an enlarged view of a bonding portion between a vertical bonding flap and a folding side plate piece.

FIG. 4 is a partially enlarged view of a top flap and a right-angle cut.

FIG. 5 is a perspective view showing a relationship between a tubular body and a top plate.

FIG. 6 is a perspective view showing an intermediate state of bottom surface formation.

FIG. 7 is a perspective view showing a bottom surface formation completion state.

FIG. 8 is a schematic perspective view of a closed container.

FIG. 9 is a side view showing a folded state of the closed container.

FIG. 10 is a plan view of the top side of the embodiment.

11 is a sectional end view taken along the line AA in FIG.

[Explanation of symbols]

1 Main plate 2 Top plate 3 Vertical crease 4,8 Folding side plate piece part 5,7 Folding side plate part 6 Folding side plate part 9 Edge 10 Vertical edge crease 11 Vertical adhesive flap 12 Top crease 13 Ground crease 14 Bottom crease 15, 16 Top flap piece 17,18,19 Top flap 20 Right angle cut 21,25 Folding side plate piece 22,24 Folding side plate 23 Folding side plate 26,27,28,29,36,37,38,39 Intersection point 30,31 , 33,34 Top-folded creases 32,35 Top-folded intersections 40,41,43,44 Ground-folded creases 42,45 Bottom-folded intersections 46,47 Vertical-folded creases 48 Top-folded creases 49,50,79 Bottom-folded folds Creases 51,55 Folding bottom flap pieces 52,54 Folding bottom flaps 53 Folding bottom flaps 56,57,59,60 Inclined bottom creases 58,61 Bottom folding intersections 2,65 Central triangular piece 63, 64, 66, 67 Side triangular piece 68 Bottom adhesive flap part 69, 70 Vertical bottom crease 71, 72 Bottom adhesive flap 73 Injection hole 74 Adhesive folding side plate part 75 Adhesive top flap 76, 77 Projection Bottom 78 Inlet 79 Lower folding crease 82 Adhesive flap 83 Crease

Claims (1)

[Scope of utility model registration request] 1. A packaging main board is made up of a main board and a top board, each of which has a flexible composite processed packaging material laminated on both sides of the packaging board, and has a rectangular shape corresponding to the shape of the product. The main board is horizontally long. Then, it is divided into a folding side plate piece portion, a folding side plate portion, a folding side plate portion and a folding side plate piece portion which are adjacent to each other through four vertical creases parallel to the vertical direction, and one of the folding side plate piece portions is A vertical adhesive flap is formed on the edge side through a vertical edge crease, and the main plate is 90
° folded inward, the vertical adhesive flaps folded 180 ° outward with the vertical edge creases, and the ends of both folding side plate pieces were bonded to the inner and outer surfaces of the vertical adhesive flap, respectively. Part is formed, the transverse cross section is rectangular, and the width of the adhesive folding side plate part and the width of the folding side plate part when the vertically long tubular body is formed are equal lengths, and the both folding side plate parts Widths are equal to each other and are not larger than the width of the folding side plate portion, and the main plate has a horizontal crease near the upper edge, a middle crease near the middle edge, and a bottom crease near the lower edge. Are formed respectively, and on the upper edge side of the top crease, the folding side plate pieces are provided with top flap pieces, and the folding side plate portions and the folding side plate portions are provided with top flaps, respectively. The top of the vertical crease of the top flap has a top To the right angle cuts which do not reach is formed and the top crease and between the land crease elongated folding side plate pieces with folded plate piece portion, the elongated fold side plates at both folding side plate portion,
In the folding side plate portion, a vertically long folding side plate is formed, and in both of the folding side plates, a heavenly oblique crease is formed at an angle equal to the vertical crease from the intersection of the heaven crease and the vertical crease, respectively. It is formed up to the upper folding intersection which is the intersection of both heavenly fold creases, and from both the intersections of the ground creases and the vertical creases to the upper slopes respectively, the ground crease creases are formed at the same angle as the vertical creases. It is formed up to the lower folding intersection, which is the intersection of the creases, and between the upper folding intersection and the lower folding intersection, a vertical folding crease is formed in the center of each folding side plate in the vertical direction, and further, the relative folding side surfaces. An upper fold that connects the upper fold intersections and the lower fold intersections to each other in a lateral direction in a direction opposite to each other across either the adjacent fold side portion or the adhesive fold side portion when formed into a tubular body. Crease and lower fold cree Between the ground crease and the bottom crease, both folding bottom flap pieces are adjacent to both folding side plate pieces, and both folding bottom flaps are adjacent to both folding side boards. Folding bottom flaps are formed adjacent to each other via the vertical creases, the distance between the ground creases and the bottom creases is half the width of the folding side plate portion, and each of the folding bottom flaps, From the intersection of the ground crease and the vertical crease 45 ° obliquely downward toward the center of the bottom flap to the bottom fold intersection where the sloping bottom creases are the intersections of both sloping bottom creases and are also the intersections with the bottom creases. The two folding bottom flaps are divided into a central triangular piece on the ground crease side and two triangular pieces on both sides of the vertical crease side, and a bottom adhesive flap portion is formed on the lower edge side of the bottom crease side. Both folds A vertical bottom crease that divides the bottom adhesive flap portion into two bottom adhesive flaps is formed in the vertical direction from the intersection to the lower edge, and the top plate has one side equal to the width of the folding side plate portion and the other side. A rectangular shape having the same width as the folding side plate portion is formed, and an injection hole is formed,
Each of the top flaps and the both top flaps of a tubular body made of a main plate obtained by adhering the adhesive flaps on each of four sides through creases and folded back by 180 °, and obtained by adhering the vertical adhesive flaps. The adhesive top flap formed by adhering the pieces is folded by 90 ° inward in the tubular body in the top crease, and the respective adhesives on the peripheral edge of the top plate inserted with the folded back adhesive flaps on the outside. The flap is adhered to form a top surface as a container, and in the ground creas, the folding side plate portion and the adhesive folding side plate portion are 90 ° inward.
When folded, both folding side plate parts are folded outward by 90 °,
In each slanted bottom crease, both folding bottom flaps are formed by folding and abutting on the central triangular piece and both side triangular pieces, and the bottom adhesive flap part is bent outward in the bottom crease, and is divided into two pieces in the vertical bottom crease. The adhesive flaps are brought into contact with each other, and the bottom adhesive flap portion composed of the abutted bottom adhesive flaps is folded until it comes into contact with the folding bottom flap,
Further, the projecting bottom part consisting of the central triangular piece and the triangular pieces on both sides, which project triangularly outward from the tubular body, is folded inward by 180 ° and the respective contact surfaces are adhered to form the bottom surface of the container. An inlet is attached to the hole to make a closed container,
The both folding sides are folded inward into the container with a crease folded crease, a ground crease crease, and a vertical fold crease, respectively, and the folding side surface and the adhesive folding side surface are either an upper folding crease or a lower folding crease, respectively. A paperboard folding airtight container characterized by being folded outwardly so that it can be folded into a Z shape when viewed from the side of the folding.