JP2002154519A - Paper container for packaging, method and device for forming the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper container wherein even if the body thereof is closed with a cover, no gap is formed between the peripheries of both flanges, thereby providing a good external appearance and hence commercial value can be improved. SOLUTION: The paper container 1 for packaging comprises a body portion 2 wherein a rising lower side wall portion 4 is connected to the periphery of a lower bottom portion 3 and a lower side flange portion 5 is connected to the upper end of the portion 4, a cover portion 7 wherein a falling upper side wall portion 9 is connected to the periphery of an upper bottom portion 8 and an upper side flange portion 10 opposed to the flange portion 5 is connected to the lower end of the wall portion 9, and a hinge portion 12 wherein the flange portion 5 is partially connected to the flange portion 10 in a foldable manner. In the container 1, the lower side flange portion 5 is opened upwards, and the upper side flange portion 10 is opened downwards, while the body portion 2 is closed with the cover portion 7. Under such conditions, the periphery of the flange portion 5 is brought into contact with that of the flange portion 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper packaging container in which a body portion and a lid portion are connected by a hinge portion, and the body portion and the lid portion of the paper packaging container are drawn into thick paper ( Press processing) to form a paper packaging container and a molding apparatus.

[0002]

2. Description of the Related Art Conventionally, a lower side wall portion, which rises around, is continuously connected to a periphery of a lower bottom portion, and a lower flange portion which rotates is connected to a body portion connected to an upper end of the lower side wall portion. A lid portion in which the falling upper side wall portion is continuously provided on the periphery of the upper bottom portion, and an upper flange portion which rotates to face the lower flange portion is continuously provided on a lower end of the upper side wall portion, and a part of the lower flange portion. In the case of molding a paper packaging container comprising a hinge portion which is connected to a part of the upper flange portion so as to be able to bend, for example, a body portion is formed on cardboard by molding a body portion forming female mold, a body portion forming male mold and a body portion. After being formed by the body part forming device provided with the partial paper pressing mechanism, the lid portion is formed by a lid forming female die, a lid forming male die, and a lid part forming device provided with a lid part paper pressing mechanism. The hinge portion is formed when the body portion or the lid portion is formed, or is formed alone. Further, the body part forming device and the lid portion forming device may be the same.

The reason why the body part and the lid part are separately formed is that, when the body part and the lid part are formed at the same time, a part (a part of both flange parts) connecting the body part and the lid part is formed. This is because a tensile force having a different direction is generated, and the portion is broken.

[0004]

In the conventional paper packaging container, since both flange portions are formed in a horizontal plane, the lid portion is rotated about the hinge portion, and the body portion is formed by the lid portion. When closed, a gap is generated at the peripheral edge of both flange portions, and the appearance is poor, and the commercial value is reduced.
In addition, since the body part and the lid part are separately molded, it takes a long time for molding processing, and there are inconveniences such as low productivity.

The present invention has been made in order to solve the above-mentioned inconveniences. Even when the body portion is closed by the lid portion, no gap is formed in the peripheral edges of both flange portions, and the appearance is good. An object of the present invention is to provide a paper packaging container capable of improving the commercial value, a paper packaging container molding method and a molding apparatus capable of molding the paper packaging container with high productivity.

[0006]

According to the present invention, there is provided a body in which a lower side wall portion which rises around and is continuous with a periphery of a lower bottom portion, and a lower flange portion which extends around is connected to an upper end of the lower side wall portion. A lid portion in which an upper side wall portion surrounding and falling is connected to the periphery of the upper bottom portion, and an upper flange portion that turns around to face the lower flange portion is connected to the lower end of the upper side wall portion; In a paper packaging container comprising a hinge part for connecting a part of the side flange part and a part of the upper flange part in a bendable manner, the lower flange part is expanded upward and the upper flange part is expanded downward. The lower flange portion and the upper flange portion are brought into contact with each other at the peripheral edge in a state where the lower flange portion is opened and the body portion is closed by the lid portion.

In another aspect of the present invention, a body portion is provided in which a lower side wall portion which rises around and is continuous with a periphery of a lower bottom portion, and a lower flange portion which extends around is connected to an upper end of the lower side wall portion. An upper side wall portion that circulates and falls is continuously provided on the periphery of the upper bottom portion,
A lid portion in which an upper flange portion that rotates so as to face the lower flange portion is continuously provided at a lower end of the upper side wall portion, and a hinge portion that connects a part of the lower flange portion and a portion of the upper flange portion in a bendable manner. A method for forming a body part and a lid part of a paper-made packaging container by drawing, wherein the first female mold and the first male mold are inserted into a cardboard sandwiched by a first paper holding mechanism. After forming one of the body portion and the lid portion by drawing, the thick paper on which one of the body portion and the lid portion is formed by the first female mold and the first male mold is formed by the second paper pressing mechanism. This is a method in which the other of the body part and the lid part is formed by sandwiching and performing drawing with the second female mold and the second male mold. The lower flange is expanded upward and the upper flange is expanded downward so that the lower flange and the upper flange abut on the periphery while the body is closed by the lid. It is desirable to make it.

In another aspect, the present invention is directed to a body portion in which a lower side wall that rises around and is continuously connected to a periphery of a lower bottom, and a lower flange that rotates is connected to an upper end of the lower side wall. A lid portion in which an upper side wall portion that circulates and falls is connected to the periphery of the upper bottom portion, and an upper flange portion that turns around to face the lower flange portion is connected to a lower end of the upper side wall portion; Of a paper packaging container comprising a hinge portion for connecting a part of the upper flange part and a part of the upper flange part in a bendable manner,
In a paper packaging container forming apparatus for forming a body portion and a lid portion by drawing, a first paper pressing mechanism for inserting thick paper, and a drawing process for the thick paper sandwiched by the first paper pressing mechanism are performed. A first female mold and a first male mold that form one of the lid portion, and a second paper press mechanism that sandwiches the thick paper having one of the body portion and the lid portion formed by the first female mold and the first male mold And a second female mold and a second male mold for drawing the thick paper sandwiched by the second paper pressing mechanism to form the other of the body portion and the lid portion. One of the first paper holding mechanism and the second paper holding mechanism moves the lower flange part upward so that the lower flange part and the upper flange part abut on the peripheral edge with the body part closed by the lid part. It is preferable that the upper flange portion be expanded downward and the other of the first paper pressing mechanism and the second paper pressing mechanism be expanded. Further, it is desirable that the first female mold and the second female mold are constituted by one female mold.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view of a paper packaging container according to an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional end view taken along line AA and BB of FIG. 1, and FIG. 4, FIG. 4 is an enlarged plan view of the closed state of the paper packaging container shown in FIG. 1, FIG. 5 is an enlarged cross-sectional view taken along line D-D of FIG. 4, and FIG. 6 is E of FIG. It is an expanded sectional view by the -E line.

In these figures, reference numeral 1 denotes a paper packaging container, a body portion 2 and a lid portion 7 for closing the body portion 2.
And a hinge portion 12 for connecting the body portion 2 and the lid portion 7 in a bendable manner. The body part 2 mentioned above,
A substantially square lower bottom portion 3, a lower side wall portion 4 which is continuously provided on a peripheral edge of the lower bottom portion 3, and circulates and rises at a predetermined angle;
The lower side wall portion 4 is provided with an upper end of the lower side wall portion 4 so as to be continuous with the lower side wall portion 4. Then, in a portion of the lower flange portion 5 facing the hinge portion 12 with the lower bottom portion 3 interposed therebetween,
An arcuate locking slit 6 for locking an edge 11a of a notch 11, described later, is provided.

The lid portion 7 is connected to the upper bottom portion 8 of substantially the same square as the lower bottom portion 3 and is connected to the periphery of the lower bottom portion 8 and turns around at a predetermined angle (see FIGS. 1 to 3). It is composed of an upper side wall portion 9 and an upper flange portion 10 which is continuously provided at the upper end of the upper side wall portion 9 and rotates so as to face the lower flange portion 5. Then, the upper flange portion 10 opposed to the hinge portion 12 with the upper bottom portion 8 interposed therebetween.
The notch 1 in which the edge 11a engages with the locking slit 6
1 is provided.

The lower flange portion 5 is shown in FIGS.
As shown in FIGS. 5 and 6, a U-shaped portion excluding a portion connected to the hinge portion 12 has a shape that is expanded upward,
As shown in FIGS. 2, 3, 5, and 6, the upper flange portion 10 has a shape in which a U-shaped portion excluding a portion connected to the hinge portion 12 is expanded downward. . However, the hinges 12 of the lower and upper flanges 5, 10
And the lower and upper flange portions 5, 10 described above.
The end portion connected to the U-shaped portion is expanded upward or downward.

Next, how to close the paper packaging container 1 will be described. First, as shown in FIG. 1, the lid portion 7 is rotated about the hinge portion 12, and the lid portion 7 is overlaid on the body portion 2. When the lid portion 7 overlaps the body portion 2 as described above, the lower flange portion 5 expands upward as described above, and
Since the upper flange portion 10 is expanded downward, as shown in FIGS. 5 and 6, the lower flange portion 5 and the upper flange portion 10 are in contact at the peripheral edges, and the peripheral edges of the two flange portions 5 and 10 are provided. No gaps are generated.

Next, the portion of the lower flange portion 5 outside the locking slit 6 is rotated counterclockwise in FIG.
After the edge 11a of the notch 11 is inserted between the lower flange portions 5, the portion of the lower flange portion 5 outside the locking slit 6 is returned to the original state by its own elastic force. As shown in FIG. 6, the paper packaging container 1 is kept closed. When the paper packaging container 1 is opened, the paper packaging container 1 can be opened as shown in FIG. 1 by performing the above procedure in reverse.

As described above, according to one embodiment of the paper packaging container 1 of the present invention, the lower flange portion 5 is expanded upward and the upper flange portion 10 is expanded downward. Since the lower flange portion 5 and the upper flange portion 10 abut on the peripheral edge in a state where the body portion 2 is closed by the lid portion 7, even if the body portion 2 is closed by the lid portion 7, both flange portions 5, No gap is generated on the periphery of No. 10, the appearance is good, and the commercial value can be improved.

FIG. 7 is a sectional view showing a schematic configuration of an embodiment of a paper packaging container forming apparatus for molding the paper packaging container shown in FIG. 1, and FIG. 8 is a paper packaging container shown in FIG. FIGS. 9 and 10 are plan views of the container-forming apparatus excluding the female mold, and FIGS. 9 and 10 are explanatory views showing a forming process of a paper-packaging container-forming apparatus for forming a paper-packaging container. The same reference numerals are given to the same parts as in FIG.

In these figures, P indicates a cardboard for forming the paper packaging container 1. Reference numeral 21 denotes a paper packaging container forming apparatus, which comprises a body part 2, a lid part 7, and a hinge part 1.
2, a first male mold 23 for molding the body part 2, a second male mold 26 for molding the lid part 7, and a body part 2
The first paper pressing mechanism 27 that inserts the cardboard P to form the hinge portion 12 before forming the paper, and the second paper pressing mechanism 32 that inserts the cardboard P after the body portion 2 is formed before the cover 7 is formed. And a base 35 accommodating the first male mold 23 and the second male mold 26 and having an accommodating recess 35a accommodating the first and second paper pressing mechanisms 27 and 32.

The first male mold 23 has a first male mold body 24 for molding the body portion 2 and the upper surface of the first male mold body 24 is moved to a position slightly higher than the upper surface of the second male mold 26. A plurality of coil springs 25 are provided as elastic bodies that are lifted to a state and extend and contract so as to be able to move the first male main body 24 in a vertical state in a horizontal state.

The first paper holding mechanism 27 is provided with a female mold 22.
A peripheral part (a lower flange part 5,
A part that forms a part of the upper flange portion 10) and the hinge portion 12, and a plan view I-shape in which the portions of the two flange portions 5 and 10 located on both sides of the hinge portion 12 are sandwiched by the female mold 22. Paper holder 28 and this paper holder 28
A plurality of coil springs 29 as an elastic body which expands and contracts in order to raise the upper surface of (1) A paper holder 30 having a U-shape in plan view surrounding the male body 24 with a paper holder 28;
0 is lifted horizontally to the same height position as the upper surface of the first male mold main body 24, and a plurality of coil springs 31 as elastic bodies that expand and contract to move the paper presser 30 vertically in the horizontal state. It is configured.

Further, the second paper pressing mechanism 32 is
A peripheral portion for forming the second lid portion 7 (a portion facing the above-described U-shaped portion), a U-shaped paper press 33 surrounding the second male mold 26 with a paper press 28, and this paper press 33
And a plurality of coil springs 34 as elastic bodies which expand and contract to raise and lower the paper holder 33 in the horizontal state to the same height position as the upper surface of the second male mold 26 and move the paper presser 33 in the horizontal state. ing.

The female mold 22 can be moved horizontally in the vertical direction by a drive mechanism (not shown). Also, the first male body 24, the first and second
Each paper press 28, 30, 33 of the paper press mechanism 27, 32
Is prevented from going above the position in FIG. 7 by a stopper mechanism not shown. The upper surfaces of the paper retainers 30 and 33 are inclined surfaces descending outward, and the upper surface of the paper retainer 28 is flat except for the portion where the hinge portion 12 is formed. Is an inclined surface descending outward. The urging force of the coil spring 29 for urging the paper holder 28 is the same as the coil springs 31 and 3 for urging the paper holders 30 and 33.
4 is set stronger than the urging force.

Next, the operation of molding the paper packaging container 1 by the paper packaging container molding apparatus 21, that is, the molding method will be described. First, the female mold 22 and the first male mold 23, as shown in FIG.
To a height at which the thick paper P can be inserted. next,
As shown in FIG. 7, a female mold 22 and first and second male molds 2 are provided.
3, 26, and the cardboard P is inserted between the paper holders 28, 30, and 33. Then, the female mold 22 is lowered by the driving mechanism.

When the female mold 22 is lowered in this way, first, as shown in FIG. 9, the thick paper P is sandwiched between the first paper pressing mechanism 27 and the coil springs 29, 31 by the pressing force of the female mold 22. Is shrunk, the paper holder 2
8, 30, the female mold 22 and the first male mold main body 24 are lowered.
Then, the cardboard P is subjected to drawing processing to form the body portion 2 and the hinge portion 12. When the body portion 2 is formed, the urging force of the coil spring 29 for urging the paper holder 28 is set to be stronger than the urging force of the coil spring 31 for urging the paper holder 30.
And the thick paper P sandwiched between the paper holder 30 and the paper holder 30 is drawn inward.

When the female mold 22 is further lowered, as shown in FIG. 10, the cardboard P is sandwiched by the second paper pressing mechanism 32 and then the coil spring 3 is pressed by the female mold 22.
Since the paper holder 33 is lowered by the contraction of 4, the cardboard P is drawn by the female mold 22 and the second male mold 26 to form the lid portion 7. When the lid 7 is formed, the urging force of the coil spring 29 for urging the paper holder 28 is changed to the coil spring 34 for urging the paper holder 33.
, The thick paper P sandwiched between the female mold 22 and the paper holder 33 is drawn inward.

Then, as shown in FIG. 10, when the female mold 22 is lowered to the lowermost end and the molding of the body part 2, the lid part 7, and the hinge part 12 is completed, as shown in FIG. After raising the female mold 22 by the omitted drive mechanism, the cardboard P on which the body part 2, the lid part 7, and the hinge part 12 are formed is extracted. When the female mold 22 is raised in this manner, the first male mold main body 24 and the paper pressers 28, 30, and 33 are raised to their original positions by the urging forces of the coil springs 25, 29, 31, and 34. After that, by the same operation,
The body portion 2, the lid portion 7, and the hinge portion 12 can be formed on the cardboard P.

The cardboard P on which the body part 2, the lid part 7 and the hinge part 12 are formed is set in a predetermined cutting mechanism and cut into the shape shown in FIG. In addition to the above, the notch 11
Is provided.

As described above, according to the embodiment of the paper packaging container forming apparatus 21 of the present invention, the body part 2, the lid part 7, and the hinge part 1 are moved in one stroke of moving the female mold 22 up and down.
2, the paper packaging container 1 can be molded with high productivity. Then, the lower flange portion 5 is expanded upward, the upper flange portion 10 is expanded downward, and the lower flange portion 5 and the upper flange portion 10 are closed with the body portion 2 closed by the lid portion 7. Are made to abut on the periphery, so that even if the body part 2 is closed with the lid part 7, there is no gap between the periphery of both flange parts 5, 10 so that the appearance is good and the commercial value can be improved. it can. Further, a female mold (first female mold) for molding the body part 2, a female mold (second female mold) for molding the lid part 7, and a hinge molded female mold for molding the hinge part 12 are formed into one female. Since the mold 22 was used,
In addition, since the second paper pressing mechanisms 27 and 32 are configured using the female mold 22, the number of components can be reduced and the configuration can be simplified.

In the above-described embodiment, the body part 2 and the hinge part 12 are formed first, and the lid part 7 is formed later. However, the lid part 7 and the hinge part 12 are formed first, and the body part 2 is formed. May be formed later, or after the body portion 2 and the lid portion 7 are formed, the hinge portion 12 may be formed by another device. Also, body part 2
The female mold for molding the lid, the female mold for molding the lid part 7, and the hinge molded female mold for forming the hinge part 12 are one female mold 22. However, each female mold may be configured separately, The female mold for forming the lid part 7 and the female mold for forming the hinge part are one female mold, and the female mold for forming the lid part 7 is another female mold, or the female mold for forming the lid part 7 and the female mold for forming the hinge part. Can be formed into one female mold, and the female mold for forming the body portion 2 can be another female mold, and the paper packaging container 1 can be similarly molded.

Further, the first and second paper holding mechanisms 2
Although an example is shown in which the female molds 7 and 32 are configured using a part of the female mold 22, the first and second paper pressing mechanisms 27 and 3 are provided separately from the female mold.
2 may be provided. Although the example in which the female mold 22 is moved has been described, a configuration in which the female mold 22 side is fixed and the other part side is moved may be adopted. And hinge part 1
Although the portions of both flange portions 5 and 10 located on both sides of 2 are made flat, similar effects can be obtained even if these portions are expanded upward or downward similarly to both flange portions 5 and 10. be able to.

[0030]

As described above, according to the paper packaging container of the present invention, the lower flange portion is expanded upward, the upper flange portion is expanded downward, and the body portion is formed by the lid portion. With the lower flange and upper flange abutting on the peripheral edge with the lid closed, there is no gap between the peripheral edges of both flanges even when the body is closed with the lid, and the appearance is good. , The commercial value can be improved.

According to the method for forming a paper packaging container of the present invention, for example, the body part and the lid part can be formed in one stroke of moving the first and second female molds up and down. It can be molded with high productivity. Then, while expanding the lower flange portion upward, the upper flange portion is expanded downward, and the lower flange portion and the upper flange portion abut on the peripheral edge in a state where the body portion is closed with the lid portion. Accordingly, even when the body portion is closed by the lid portion, no gap is generated in the peripheral edges of both flange portions, the appearance is good, and the commercial value can be improved.

Further, according to the paper packaging container forming apparatus of the present invention, for example, the body part and the lid part can be formed in one stroke of moving the first and second female dies up and down, so that the paper packaging container can be formed. It can be molded with high productivity. And
The lower flange portion was expanded upward and the upper flange portion was expanded downward so that the lower flange portion and the upper flange portion abut on the peripheral edge while the body portion was closed by the lid portion. Therefore, even if the body portion is closed by the lid portion, no gap is generated in the peripheral edges of both flange portions, the appearance is good, and the commercial value can be improved. Further, since the first female mold and the second female mold are one female mold, the number of components can be reduced and the configuration can be simplified.

[Brief description of the drawings]

FIG. 1 is a perspective view of a paper packaging container according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional end view taken along lines AA and BB in FIG.

FIG. 3 is an enlarged sectional view taken along line CC of FIG. 1;

FIG. 4 is an enlarged plan view showing a state where the paper packaging container shown in FIG. 1 is closed.

FIG. 5 is an enlarged sectional view taken along line DD of FIG. 4;

FIG. 6 is an enlarged sectional view taken along line EE in FIG. 4;

FIG. 7 is a cross-sectional view showing a schematic configuration of an embodiment of a paper packaging container forming apparatus for molding the paper packaging container shown in FIG.

8 is a plan view of the paper packaging container molding apparatus shown in FIG. 7 without a female mold.

FIG. 9 is an explanatory diagram showing a molding process of a paper packaging container molding apparatus for molding a paper packaging container.

FIG. 10 is an explanatory view showing a molding process of a paper packaging container molding apparatus for molding a paper packaging container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper packaging container 2 Body part 3 Lower bottom part 4 Lower side wall part 5 Lower flange part 6 Locking slit 7 Lid part 8 Upper bottom part 9 Upper side wall part 10 Upper flange part 11 Notch 11a Edge 12 Hinge part 21 Paper made Packaging container forming apparatus 22 Female mold 23 First male mold 24 First male mold main body 25 Coil spring 26 Second male mold 27 First paper press mechanism 28 Paper press 29 Coil spring 30 Paper press 31 Coil spring 32 Second paper press Mechanism 33 Paper press 34 Coil spring 35 Base 35a Storage recess P Cardboard

Claims (6)

[Claims] 1. A lower side wall portion that rises around and is connected to a periphery of a lower bottom portion, and a lower flange portion that turns around and a body portion that is connected to an upper end of the lower side wall portion and stand up around. A lid portion in which a lower upper side wall portion is continuously provided on a periphery of an upper bottom portion, and an upper flange portion which rotates to face the lower flange portion is continuously provided at a lower end of the upper side wall portion, and a lower portion of the lower flange portion. In a paper packaging container comprising a part and a hinge part for connecting a part of the upper flange part in a bendable manner, the lower flange part is expanded upward and the upper flange part is expanded downward. The paper-made packaging container, wherein the lower flange portion and the upper flange portion abut on peripheral edges with the body portion closed by the lid portion. 2. A lower side wall portion which rises around and is continuously connected to a periphery of a lower bottom portion, and a lower flange portion which rotates around a body portion continuously provided at an upper end of the lower side wall portion and stands up. A lid portion in which a lower upper side wall portion is continuously provided on a periphery of an upper bottom portion, and an upper flange portion which rotates to face the lower flange portion is continuously provided at a lower end of the upper side wall portion, and a lower portion of the lower flange portion. A paper packaging container comprising a part and a hinge part for foldably connecting the part of the upper flange part,
In a method of forming a container for paper packaging, wherein the body portion and the lid portion are formed by drawing, the cardboard sandwiched by a first paper pressing mechanism is subjected to drawing with a first female die and a first male die. After forming one of the body part and the lid part, the cardboard on which one of the body part and the lid part is formed by the first female mold and the first male mold is formed by a second paper pressing mechanism. A method for forming a paper-made packaging container, wherein the other of the body portion and the lid portion is formed by sandwiching and performing drawing with a second female mold and a second male mold. 3. The method for molding a paper packaging container according to claim 2, wherein the lower flange portion and the upper flange portion abut on their peripheral edges in a state where the body portion is closed by the lid portion. ,
A method for forming a paper packaging container, comprising: expanding the lower flange portion upward and expanding the upper flange portion downward. 4. A lower side wall portion, which rises around, is connected to the periphery of the lower bottom portion, and a lower flange portion, which turns around, and a body portion connected to the upper end of the lower side wall portion, stand up around. A lid portion in which a lower upper side wall portion is continuously provided on a periphery of an upper bottom portion, and an upper flange portion which rotates to face the lower flange portion is continuously provided at a lower end of the upper side wall portion, and a lower portion of the lower flange portion. A paper packaging container comprising a part and a hinge part for foldably connecting the part of the upper flange part,
In a paper packaging container forming apparatus for forming the body portion and the lid portion by drawing, a first paper pressing mechanism for inserting thick paper, and drawing processing for the thick paper sandwiched by the first paper pressing mechanism, A first female mold and a first male mold forming one of the body part and the lid part, and the first female mold and the first male mold each forming one of the body part and the lid part A second paper holding mechanism for holding the thick paper; a second female mold and a second male mold for performing drawing on the thick paper sandwiched by the second paper holding mechanism to form the other of the body portion and the lid portion; A paper packaging container forming apparatus, comprising: 5. The paper packaging container forming apparatus according to claim 4, wherein the lower flange portion and the upper flange portion abut against each other at a peripheral edge in a state where the body portion is closed by the lid portion. ,
One of the first paper pressing mechanism and the second paper pressing mechanism expands the lower flange portion upward, and the other of the first paper pressing mechanism and the second paper pressing mechanism lowers the upper flange portion. A container forming apparatus for paper packaging, which is expanded to the side. 6. The paper packaging container according to claim 4, wherein the first female mold and the second female mold are constituted by one female mold. Packaging container molding equipment.