JPH01207011A - Simple container - Google Patents

Abstract

PURPOSE:To obtain a simple container capable of easily drinking therefrom by disposing a body part floated to a plane form at an ordinary time, having the bottom form of a square or a hexagon at the time of using and assembled to a cylindrical form having the upper edge opening part of a polygon form internally or externally of a bag body folded to a W character shape. CONSTITUTION:The simple container is constituted of the cylindrical form body part 1 and the bag body 2 into which the body part 1 is inserted. At the ordinary time, the body part 1 is inserted into the bag body 2 and the body part 11 of the body 1 folded to the plane and the double lower end part of an overlap width part 10 are inserted into both sides the one bent curve 22 of the bag body 2. At the time of using, the body 1 is assembled so as to form a cylindrical form having the bottom part of a regular square form and the upper edge opening part of a regular octagon form along the two folded lines 30 and four folded lines and four auxiliary folded lines 32. Then, the external bag body 2 is opened by following the external face of the body 1 and the body 1 folded to the plane and the bag body 2 are integrated and assembled to the cylindrical form. At this time, the upper edge opening part of a mouthpiece is the regular octagon in form, so that the angle of a corner part is widened and rounded for easy drinking.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a simple container, and more particularly to a simple container such as a simple cup that has a planar shape in normal times and is assembled into a cylindrical shape when used. It is something.

[Conventional technology]

A typical conventional simple container of this type is the simple container (Japanese Patent Publication No. 57-45563, invented by the present inventor).
) etc.

This simple pot consists of an outer body and a bag body glued to the inside of the outer body. The outer body has two parallel and equal length reference sides facing each other by forming folding lines in parallel on a shape-retaining flat plate and bending them along the folding lines. A diagonal line connecting the vertices of the two corners formed by both the left and right sides of the reference side divides the distance between the two reference sides into two and forms a hexagonal cylinder shape that is parallel to the two reference sides. The bag is formed by folding a sheet into a W-shape, sealing both the left and right sides of the sheet, and sealing the left and right sides at both ends of one mountain fold curve of the folded part. The area from the intersection point to the two valley fold curves of the folded portion is sealed.

The inner width of the seal portions on both the left and right sides is one half of the length of the entire inner periphery of the outer body, and each fold from one mountain fold curve to two valley fold curves of the fold portion l] is one half of the distance between the two reference sides of the outer body, and the above 2
The width of the base between the two intersections of the valley fold curves with the seal part of the folded part of the book is equal to the length of the reference side of the outer body, and the width of the base between the two intersections of the valley fold curves with the seal part of the folded part The width between the intersection point and the seal portions on both the left and right sides is made equal to the length of the sides on both the left and right sides of the reference side of the outer body.

The bag body is glued to the dirt floor side of the outer body, the bottom portions of the two valley fold curves of the bag body are glued to the two reference side parts of the outer body, and the seal portions on both left and right sides of the bag body are attached. The outer side of the folded part of
It will be glued with one-times the width.

Such simple kelp is normally folded into a flat shape, and when used, when the outer body is assembled into a hexagonal cylinder, the bag body glued to the inner surface of the outer body is assembled into a hexagonal cylinder. It opens into a hexagonal cylinder shape with a hexagonal bottom as it is pulled by the outer body. In addition, due to the shape retention of the hexagonal cylindrical outer body, the outer body and the bag body maintain the above-mentioned shape, and are used as a cot.

[Problem to be solved by the invention]

However, when assembled, the above-mentioned simple cup has a hexagonal cylindrical shape from the bottom to the upper edge opening, so the upper edge opening that corresponds to the drinking spout is hexagonal, and the corners are angular, making it difficult to drink. There are some problems such as difficulty.

An object of the present invention is to provide a simple container with a polygonal upper edge opening that is easy to drink from.

[Means to solve the problem]

The present invention consists of a flat plate having shape-retaining properties, which is usually folded into a flat shape, and whose bottom part has a square or hexagonal shape when in use.
The present invention is characterized in that a body assembled into a cylindrical shape with a polygonal upper edge opening is disposed on the inner or outer surface of a bag formed by folding it into a W-shape.

[Effect]

The present invention has a body whose upper edge opening is polygonal when in use, so that the upper edge opening, which corresponds to the drinking spout during use, is assembled into a polygonal shape than the quadrangular or hexagonal bottom. As a result, the corners of the upper edge opening are rounded, making it easier to drink.

〔Example〕

Hereinafter, ten examples of the simple container of the present invention will be described with reference to the accompanying drawings.

1 to 7 show a first embodiment of the simple container of the present invention, FIGS. 1 and 2 are a developed view of the body and a bottom view of the assembled state, and FIGS. 3 and 4 are bags. FIG. 5 is a front view in a plane state, FIG. 6 is a perspective view in an assembled state, and FIG. 7 is a sectional view taken along the line ■-■ in FIG. 5.

The simple container of the present invention in this embodiment includes a cylindrical body 1 which is usually in a planar shape, has a regular square bottom when assembled, and a regular octagonal upper edge opening;
It consists of a bag body 2 into which a bag body 2 is inserted.

As shown in FIGS. 1 and 2, the body 1 is made of a rectangular cardboard or plastic plate laminated with polyethylene or the like on both sides. Four pieces of bent cotton 31 (half-cut lines, perforations, pressing lines, etc.) are applied in parallel and at equal intervals in the lateral direction of this body 1 (that is, in the axial direction of the body 1 assembled in a cylindrical shape). Equally divided torso 11 and its torso 1
A gluing allowance lO provided at the right end of 1 is formed. Two folding lines 30 (pushing points) are placed in every other part of the body 11 divided into four parts, parallel to the folding lines 31 so as to be located in the center of the two folding lines 31. establish. Further, an auxiliary folding line 32 is provided in a portion of the trunk portion 11 divided into four equal parts where the folding line 30 is not provided. This auxiliary folding line 32
The upper edge of the body 11 extends from the center of the two folding lines 31 (or the left end of the body 11 and the folding line) 31 to the lower part of the body 11. A chevron-shaped cut 12 is made at the two folding lines 3o of the body part 11 from the lower end to a position B2+α slightly higher than the height (folding part) B2 of the folding part 20 of the W bottom part 25 of the bag body 2, which will be described later. establish. Point B from the lower end of the two folding lines 30 to a point slightly higher than the folding part B2 of the folding part 20 of the bag body
A cut 12 is provided along a straight line connecting 2+α and the lower ends of the two folding lines 31 on both sides of the two folding lines 30. The body part 11 is folded along the two folding lines 30, and the glue allowance 1o is adhered to the left end of the body part 11 with an adhesive. As a result, the fuselage 1 has a generally planar shape and has two folding lines 30.
By bending the body part 11 and the gluing allowance part 10 along the four folding lines 31 and the four auxiliary folding lines 32, the body 1 has a square bottom, that is, the bottom part is parallel and has the same length. It has two reference sides 14 facing each other, and a diagonal line 16 connecting the vertices of the two corners formed by the left and right sides 15 of the two reference sides 14 divides the distance between the two reference sides 14 into two, and
It has a cylindrical shape that is a regular quadrangle that is parallel to the reference side 14 and whose upper edge opening is a regular octagon.

On the other hand, the bag 2, as shown in FIGS. 3 and 4,
A single sheet made of a single layer or a composite laminate made of aluminum foil, polyethylene, nylon, etc. is folded into a W shape to form the folded part 20 of the W bottom part 25, and on both the left and right sides of the sheet. In addition to applying a seal part 21, a seal 24 is applied between the intersections of both ends of one mountain fold curve 22 of the folding part 20 with the left and right side seal parts 21 to the bottom seal part 25. be. Then, the inner width A2 of the seal portions 21 on both the left and right sides is set to 1/2 of the length of the body portion 11 obtained by subtracting the glue allowance 10 from the length A1 of the entire periphery of the body 1, and the W bottom portion 25, each folding height (folding part) B2 from one mountain fold curve 22 to two valley fold curves 23 is defined as the reference side 1 of the fuselage l.
4, and the distance B between the two valley-folded cotton 2.
The width 02 between the two intersections with the folded seal part 24 of 3 is equal to the length C8 of the reference side 14 of the body 1, and the width 02 between the two intersections with the folded seal part 24 of the two valley fold curves 23 and The middle D2 between the left and right side seal portions 21 is defined as the length DI (
(equal to 1/2 of the length CI of the reference side 14), and the two valley fold curves 23 and the upper edge 26 opposite thereto.
The height H2 to the edge of the body 1 is made approximately the same as the height H1 of the body 1.

Thus, the body 1 is placed in the bag body 2, and the double lower end portions of the body part 11 and the gluing allowance 1o of the body part 1 which is folded into a plane on both sides of the bag body 2 with one mountain fold curve 22 sandwiched therebetween. Insert them so that they fit into each other.

The simple container of the present invention in this embodiment has the above-mentioned configuration, and its usage will be explained below.

The body 1 is assembled along two folding lines 30, four folding lines 31, and four auxiliary folding lines 32 into a cylindrical shape with a regular square bottom and a regular octagonal opening at the upper edge. . Then, the outer bag body 2 opens following the outer surface of the body 1 assembled into the cylindrical shape described above, and the force of the opened bag body 2 trying to close and the force of the body 1 assembled into the cylindrical shape described above are generated. The body 1 and the bag body 2, which are folded into a planar shape, are assembled into the above-mentioned cylindrical shape in a balance with shape retention.

At this time, since the upper edge opening that corresponds to the drinking spout forms a regular octagon, the angles of the corners are widened and rounded, making it easier to drink. Also, the dimensional relationship between the body 1 and the bag body 2 is that the width of the body l is the width of the bag body 2.
The height of the notch 12 provided at the two folding lines 30 of the body 1 is set equal to the inner width A2 of the bag body 2.
Since it is slightly larger than the folding part 82 of the folding part 20 of No. 5,
There is no need for high accuracy. Furthermore, the bag body 2 opens following the outer surface of the body 1 assembled into a cylindrical shape, that is, the inner body 1 pushes and expands the outer bag body 2, so that the body 1 can be simply inserted into the bag body 2. There is no need to glue it.

Incidentally, if the body l and the bag body 2 are bonded together, the assembled state becomes firm. At this time, it is not necessary to accurately determine the bonding dimension relationship between the body 1 and the bag body 2. Therefore, it can be manufactured easily.

In this embodiment, the bag body 2 is provided with a fold-in seal portion 24, so that the assembled state is secure and self-supporting. When this fold-in seal part 24 is provided, the fold-in seal part 24 of the bag body 2 is constructed so as not to get in the way when the body is formed and the body 1 is inserted into the bag body 2. Note that this fold-in seal portion 24 does not necessarily need to be provided. In this case, the cut 12 in the inner body 1 does not need to be formed into a chevron shape, and it is sufficient to simply provide a cutting line or the like on the folding line 30.

8 and 9 show a second embodiment of the simple container of the present invention, FIG. 8 is a developed view of the body, and FIG. 9 is a front view of the bag in a plan state.

In the figure, the same reference numerals as in FIGS. 1 to 7 indicate the same parts.

This embodiment has a fuselage IA that eliminates the gluing allowance 10 of the fuselage l of the above-described embodiment, has a slightly shorter horizontal length A1', and is provided with one folding line 30 at the center; The bag body 2 of the above-mentioned embodiment is used.

This body IA and the bag body 2 are connected to the upper edge 17A and the mountain fold curve 2.
It is bonded to a portion 18A near No. 2 (the portion indicated by dots in FIG. 9). This bonding means may include bonding with an adhesive, or bonding by heat and pressure if the outer surface of the body IA and the inner surface of the bag body 2 are made of polyethylene. Fuselage I
Even if A is not glued at the glue allowance, the end of the fuselage IA will not open. This embodiment is assembled into a cylindrical shape with a regular square bottom and a regular octagonal opening at the upper edge.

FIG. 10 is a developed view of a fuselage showing a third embodiment of the present invention.

In the figure, the same reference numerals as in FIGS. 1 to 9 indicate the same parts.

This embodiment uses the body IB of the above-described first embodiment in which the notch 12 was not provided in the body 1, and the bag body 2 of the above-mentioned first embodiment.

The bag body 2 is attached to the inner surface of the car body IB at the upper edge 17B, the bottom part 18B near the two reference sides 14, and the two folding lines 30.
2 of the distance between at least two reference sides 14 from the lower side in
It is bonded to the 1/1/10th portion 19B (the portion indicated by dots in FIG. 10). This embodiment is assembled into a cylindrical shape with a regular square bottom and a regular octagonal opening at the upper edge, similar to the first and second embodiments described above.

FIG. 11 is a developed view of a fuselage showing a fourth embodiment of the present invention.

In the figure, the same reference numerals as in FIGS. 1 to 10 indicate the same parts. The fuselage IC in this embodiment has two folding lines 30 and two folding lines 31 alternately and parallel to each other.

It is applied at equal intervals to form a trunk 11 divided into four equal parts and a gluing margin 10 located at the right end of the trunk 11. An auxiliary folding line 32 in an effective formation is formed on each of the four equally divided trunks 11, so that the two vertices of the auxiliary bending line L'1132 divide the upper edge of each of the four equally divided trunks 11 into thirds. Provide each. A bag body 2 is placed on the inner surface of this body IC, and a portion 1 of the upper edge of the body IC is attached.
7C and the lower edge portion 18c (the portion indicated by dots in FIG. 11). This embodiment is assembled into a cylindrical shape with a regular square bottom and a regular dodecagonal opening at the upper edge.

FIG. 12 is a developed view of a fuselage showing a fifth embodiment of the present invention.

In the figure, the same reference numerals as in FIGS. 1 to 11 indicate the same parts.

In the figure, ID is a body made of a flat plate with shape retention, and this body ID has a height of 2× which is approximately twice the height H2 of the bag body 2.
H1 and the width of the bag body 2 (the sum of the width of the left and right side seal portions 21 and the inner width A2 of the left and right side seal portions 21)
It consists of a rectangle with a width Al'' that is approximately equal to
Four folding lines 31 are provided at D to form glue allowance/handle portions 100 on both left and right sides and a body portion 11 in the middle portion. This body I
At the center of D, perpendicular to the four bends vA31,
Bending 'gA320 and cutting line 33 for folding
Set 0.

That is, the handle portion 100 of the torso ID is pressed.

A folding line 320 such as a half cut or a perforation is provided, and a full-length cutting line 330 is provided in the body section 11, respectively. This body 1
In the body 11, the lateral dimension of the body between two of the four folding lines 31 is twice the horizontal dimension of the body on both sides of the body. An auxiliary folding line 32 in the shape of a square is provided on the body of this body, the apex of which is located at a position that bisects the upper edge or the lower edge of the body of this body. The bag body 2 is attached to the inner surface of the body ID thus formed, and the handle part 100 is cut out vA3.
Parts 18D on both sides of 30 and parts 17 on the upper and lower edges
D (portions indicated by dots in FIG. 12) are bonded.

This embodiment is assembled into a cylindrical shape with a regular square bottom and a regular octagonal opening at the upper edge.

13 to 15 show a sixth embodiment of the easy-to-transfer container of the present invention, FIGS. 13 and 14 are a developed view of the body and a bottom view of the assembled state, and FIG. 15 is a plan view of the bag body. It is a front view of a state.

In the figure, the same reference numerals as in FIGS. 1 to 12 indicate the same parts.

In the figure, IE is a fuselage made of a flat plate with shape retention, and this fuselage IE has two folding lines 30 (pushing, etc.) in the transverse direction (that is, the axial direction of the fuselage IE assembled in a cylindrical shape). The body part 11 is divided into six equal parts by making four folding lines 31 (half-cut lines, perforations, pushing lines, etc.) in parallel and at equal intervals, and a glue allowance is provided at the right end of the body part 11. 10.

From the upper edge of this fuselage IEO to the middle part, 12 auxiliary folding lines 32 (half-cut lines, perforations, pushing lines, etc.) are connected to the above-mentioned 2
The body 11 together with the book folding line 30 and four folding lines 31
Divide it into 18 equal parts in parallel. The length C1 of the two reference sides 14 of this fuselage IE, and the left and right sides 1 of the two reference sides 14
The lengths of 5 and 5 are each equal.

2A is a bag body, and this bag body 2A has a width C2 between the two intersections of the two valley fold curves 23 with the fold seal part 24, and a width C2 between the two intersections of the two valley fold curves 23 with the fold seal part 24. The width D2 between the left and right side seal portions 21 is made equal to each other, and the length CI of the two reference sides 14 of the fuselage IE and the two reference sides 1
Length 15 on both left and right sides of 4.

and be equal to each other.

The bag body 2A is thus formed on the inner surface of the torso IE, and the torso IE
The upper edge portion 17E and the lower edge portion 18E (portions indicated by dots in FIG. 13) are bonded.

This embodiment is assembled into a cylindrical shape with a regular hexagonal bottom and a regular decagonal opening at the upper edge.

FIG. 16 is a developed view of a fuselage showing a seventh embodiment of the present invention.

In the figure, the same reference numerals as in FIGS. 1 to 15 indicate the same parts. The fuselage IF in this embodiment has two folding lines 30 arranged in parallel in the lateral direction of the fuselage IF.

One folding line 31 is placed between this left folding line 30 and the left end of the body 11, and two folding lines 3 are placed between the two folding lines 30.
1, one folding line 31 is placed between the right side folding ``1fA30'' and the right end of the gluing portion 10, and two folding lines 30 and 4 are placed.
The book is formed into a trapezoidal shape so that the lower end of the folding line 31 divides the lower edge of the body 11 into six equal parts. An auxiliary folding line 3 in the shape of a square is located in the upper half of the fuselage IF between the left end of the body 11 and the left folding line 31 and between the two middle folding lines 31.
Apply 2. The bag body 2A is placed on the inner surface of this fuselage IF, and the fuselage IF
It is bonded at the upper edge portion 17F and the lower edge portion 18F (portions indicated by dots in FIG. 16). This embodiment is assembled into a cylindrical shape with a regular hexagonal bottom and a large opening at the upper edge.

17 to 19 show an eighth embodiment of the simple container of the present invention, FIGS. 17 and 18 are a developed view of the body and a bottom view of the assembled state, and FIG. 19 is a plan view of the bag body. FIG.

In the figure, the same reference numerals as in FIGS. 1 to 16 indicate the same parts.

In the figure, IG is a body made of a flat plate with shape retention, and this body IG has four folding lines 31 and four folding lines 31.
! The upper end of the body part 11 is formed into a trapezoidal shape so that the upper edge of the body part 11 is divided into four equal parts. Two folding lines 30 are placed between this left folding line 31 and the left end of the body 11, and between the two folding lines 31 from the left and the two folding lines 31 from the right. The upper end of the folded cotton 30 is applied in parallel so that it divides the above-mentioned space into two equal parts. The upper half of the body 11 between the first folding line 31 and the second folding line 31 from the left and between the first folding line 31 and the second folding line 31 from the right of this body 11 An auxiliary folding line 32 in the shape of a dog is provided so that the apex of the auxiliary folding line 32 bisects the above-mentioned space into two equal parts.

The length C3 of the two reference sides 14 of the fuselage IG is made longer than the length Dl of both left and right sides 15 of the two reference sides 14.

2B is a bag body, and this bag body 2B has a width 02 between the two intersections of the two valley fold curves 23 with the folded seal part 24, and a width 02 between the two intersections of the two valley fold curves 23 with the folded seal part 24. The width D2 between the left and right side seal portions 21 is defined as the two reference sides 1 of the fuselage IG.
The length C1 of 4 and the lengths of both the left and right sides 15 of the two reference sides 14 are made equal to each other.

In addition, the width 02 between the above-mentioned two intersections is longer than the middle D2 between the two intersections and the left and right side seal portions 21. This bag body 2B
Both corners of the folded part 20, that is, both corners of the triangle surrounded by the left and right side seal parts 21, the folded part 20 seal part 24, and the valley fold curve 23 are removed (.

The bag body 2B thus formed is adhered to the inside of the body IG. That is, the entire periphery of the opening 26 of the bag body 2B is connected to the body I.
Glue to the first adhesive part 17G on the entire upper periphery of G, and attach the bottom side 25 of the two valley fold curves 23 of the bag body 2B to the second adhesive part 140 of the two 4ζ sides below the body IG. 18G, and the front and back sides of the folded parts of the seal parts 21 on both the left and right sides of the bag body 2B, that is, the parts where the seal parts 21 on both the left and right sides are folded along the folding line 30 of the body IG, are attached to the body IG. Glue the fuselage IG to the third adhesive part 19G of the
Fold the book along the folding line 30 and attach the glue allowance 10 to the body 1.
Glue it to the other side of 1. This embodiment is assembled into a cylindrical shape with a hexagonal bottom and a regular octagonal opening at the upper edge.

FIG. 20 is a developed view of a fuselage showing a ninth embodiment of the present invention.

In the figure, the same reference numerals as in FIGS. 1 to 19 indicate the same parts. The fuselage IH in this embodiment has a folding cutout &? ! 330 (all cutting lines, etc.) and folding lines 320 (pushing parts, etc.) at both upper and lower edges of the fuselage IH.
Make half cuts, perforations, etc.).

Four bends vA31 are made in parallel on both sides of the cutting line 330 and the folding line 320 and on both left and right ends of the body l to form the gluing allowance/handle part 100 and the body part 11.

There are two folding lines on the body 11 between the first folding line 31 and the second folding line 31 from the left, and between the first folding line 31 and the second folding line vA31 from the right. 31 into a trapezoidal shape, and the two folding lines 3 therein.
The upper ends of the four folding lines 31 and the apexes of the auxiliary folding lines 32 divide the upper edges of the left and right body parts 11 into four equal parts, respectively. , respectively.

The bag body 2B is attached to the inner surface of the body IH thus formed, and the handle part 10 is attached to the inner surface of the body IH.
0. Upper edge part of fuselage IH 17H1 Lower edge of fuselage IH 2
Glue is attached at the reference side portion 18H. This embodiment is assembled into a cylindrical shape with a hexagonal bottom and a regular octagonal opening at the upper edge.

FIG. 21 is a front view in a plane state showing a tenth embodiment of the simple container of the present invention.

The simple container of the present invention in this embodiment differs from the first and second embodiments in that the height of the bag body 2C is the same as that of the body 1.
A notch 28 is formed in at least one of the left and right side seal portions 21 of the bag body 2C, and the body 1. Provided near the upper edge of the IA. This body 1
．． The contents are filled into the bag 1A and the bag 2C, and the opening 29 of the bag 2C is sealed to seal the contents. In use, the upper half of the bag body 2C, the lower half of the bag body 2C, and the body 1. LA from the notch 29, and the lower half of the bag body 2C and the body 1. It is used as a container by assembling it into a cylindrical shape with a regular square bottom and a regular octagonal top edge.

〔Effect of the invention〕

As is clear from the above, the simple container of the present invention is made of a shape-retaining flat plate, is usually folded into a flat shape, and has a square or hexagonal bottom when in use, and a polygonal opening at the top edge. The body, which is assembled into a cylindrical shape, is placed on the inner or outer surface of the bag body, which is folded into a W-shape. assembled into a polygonal shape. As a result, the corners of the upper edge opening are rounded, making it easier to drink.

[Brief explanation of the drawing]

1 to 7 show a first embodiment of the simple container of the present invention, FIGS. 1 and 2 are a developed view of the body and a bottom view of the assembled state, and FIGS. 3 and 4 are bags. FIG. 5 is a front view in a plane state, FIG. 6 is a perspective view in an assembled state, and FIG. 7 is a sectional view taken along the line ■-■ in FIG. 5. 8 and 9 show a second embodiment of the simple container of the present invention, FIG. 8 is a developed view of the body, and FIG. 9 is a front view of the bag in a plan state. FIG. 10 is a developed view of a fuselage showing a third embodiment of the present invention. FIG. 11 is a developed view of a fuselage showing a fourth embodiment of the present invention. FIG. 12 is a developed view of a fuselage showing a fifth embodiment of the present invention. 13 to 15 show a sixth embodiment of the simple container of the present invention, FIGS. 13 and 14 are a developed view of the body and a bottom view of the assembled state, and FIG. 15 is a plan view of the bag body. FIG. FIG. 16 is a developed view of a fuselage showing a seventh embodiment of the present invention. 17 to 19 show an eighth embodiment of the simple container of the present invention, FIGS. 17 and 18 are a developed view of the body and a bottom view of the assembled state, and FIG. 19 is a plan view of the bag body. FIG. FIG. 20 is a developed view of a fuselage showing a ninth embodiment of the present invention. FIG. 21 is a front view in a plane state showing a tenth embodiment of the simple container of the present invention. 1, IA, IB, IC, ID, IE, IF, IG,
LH...body, 2.2A, 2B, 2C...bag body, 3
0...Folding line, 31...Folding line, 32...Auxiliary folding line.

Claims (1)

[Claims] 1. A bag body and a body, the bag body having a W-shaped bottom part folded into a W-shape, and the body body being made of a flat plate having shape-retaining properties and generally having a flat surface. When in use, the bag is assembled into a cylindrical shape with a square or hexagonal bottom and a polygonal opening at the upper edge, and the body thus formed is disposed on the inner or outer surface of the bag. A simple container.