JP2831286B2 - Packaging containers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container for packaging a wrap film, aluminum foil, paper or the like wound on a cylindrical core.

[0002]

2. Description of the Related Art Various types of containers for wrap film have been known, and most of them are described in, for example, JP-A-63-55043 and JP-A-64-9151. As shown in the figure, the container body stores a roll-wrapped wrap film, and a lid integrally provided on the container body. When such a conventional container is used, after the lid is lifted, the wrap film is pulled out to a desired length from the container main body, and the wrap film is attached to the bottom wall of the container main body or the front wall of the lid. It is common to cut with a cutter.

However, the conventional general wrap film container merely covers the lid with respect to the container main body. Therefore, depending on how the container is handled, the lid rises and the opening of the container main body is exposed to the outside. There was exposure. Exposure of the opening of the container body is not preferable for sanitation, and may cause the wrap film to fall off. In addition, when the lid is raised, the free end of the wrap film rewinds, and it may be difficult to draw out the wrap film when reused.

Therefore, in the prior art, Japanese Utility Model Laid-Open No. 4-89.
A packaging container having a lid body floating preventing function as described in Japanese Patent Publication No. 732 has been proposed. This container
At the top edges of the left and right side walls of the container body, a flap piece extending outward and downward is provided, and at the inner surface of the left and right side walls of the lid, a step is provided which protrudes inward. The flap piece is engaged with the stepped portion to prevent the lid body from floating when mounted on the vehicle.

[0005]

However, the container described in Japanese Utility Model Laid-Open Publication No. 4-89732 merely has a flap piece and a step portion provided on the container body and the lid, respectively, so that the desired effects can be obtained. In fact, it was not possible. In order to smoothly open and close the lid, the flap piece must be movable inward of the container body with the opening and closing operation of the lid. However, in the conventional container as described above, the gap between the end of the core of the wrap film housed in the container body and the side wall supporting the flap piece is extremely small, or Because there is no
The flap pieces are configured so that they can hardly move inward. Therefore, after the lid is closed and the flap piece is engaged with the step, it is difficult to separate the flap piece from the step, and there has been a problem that the lid cannot be easily opened. . In particular, in home use, since a relatively weak woman often opens and closes the lid with one hand, it is a serious problem that the lid is difficult to open.

When a product, that is, a container in which a wrap film is stored, is stored in a warehouse or the like, a plurality of rectangular parallelepiped containers are stored in a cardboard box such that the longitudinal direction of the container is vertical. , This cardboard box, for example, 10
They are often stored vertically stacked in boxes. In such a case, the product in the lower cardboard box receives a large load in the longitudinal direction for a long period of time. In the case of the conventional container described above, since the left and right side walls of the container body are supported by the core of the wrap film, when a large inward force acts on the side wall during storage, the flap pieces cannot move inward. The flap piece may be excessively pressed against the side wall of the container body, and the angle between the flap piece and the side wall may be extremely small. If the flap piece is excessively bent in this way, the smooth rotation of the flap piece is impaired,
It is difficult to open the lid.

In order to solve these problems, the distance between the left and right side walls of the container body is made considerably longer than the entire length of the core of the wrap film to be accommodated, so that the flap pieces can be moved inward. Means for providing a gap between the side wall and the end of the core may be considered. However, when such a gap is provided, a new problem such as the side wall being crushed at the time of storage in a vertically stacked state occurs.

The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a wrap which can prevent the lid from floating and can smoothly open and close the lid even with one hand. It is to provide a packaging container such as a film.

[0009]

In order to achieve the above object, the invention according to claim 1 comprises a substantially rectangular bottom wall,
The bottom wall has a side wall connected to a pair of opposing edges of the bottom wall, and a front wall and a rear wall connected to another pair of edges of the bottom wall and extending between the side walls. The container body is configured to store the packaged object, and is rotatably connected to the top edge of the rear wall, and is defined by the top edges of the side wall, the front wall, and the rear wall. A substantially rectangular top wall adapted to cover the opening of the container body to be closed and a pair of edges adjacent to an edge of the top wall serving as a center of rotation, respectively, A lid side wall arranged to be disposed outside the side wall of the container body when the opening is closed by the top wall, and an edge of the top wall opposed to the edge serving as a center of rotation is provided continuously. It extends between the lid side walls,
A lid having a lid front wall which is arranged outside the front wall of the container body when the opening is closed by the top wall, the top edge of the side wall of the container body. In addition, a flap piece extending outward is connected in a rotatable manner, and a step for engaging the flap piece when the opening is closed by the top wall to prevent the lid from floating is provided on the inner surface of the lid side wall. The predetermined portion of the side wall of the container body that is formed and faces the flap piece is made thinner than the other portion of the side wall, and the inner surface of the other portion is formed of the container body more than the inner surface of the predetermined portion. It is characterized by being located inside. Further, in the present invention, the length (L3) of the flap piece and the width (L3) of the predetermined portion are substantially the same, and the rear end of the flap piece is a predetermined first distance from the outer surface of the rear wall of the container body. Spaced apart by one distance (L2),
The rear end of the predetermined portion is spaced apart from the outer surface of the rear wall of the container body by the first distance (L2).

[0010]

According to the first aspect of the present invention, since the predetermined portion of the side wall adjacent to the flap piece is made thin, the flap piece can easily move inward of the container body when the lid is opened and closed. .

[0011] Further, since the portion other than the thin portion is thick, the strength of the entire side wall can be sufficiently maintained.

Furthermore, since the inner surface of the thick portion other than the thin portion is located inside the thin portion, the gap between the thin portion and the package is established when the package is in contact with the thick portion. A gap is formed in the gap. Therefore, a large inward force acts on the flap piece, and after the thick part comes into contact with the packaged object, the flap piece and the thin part can be further displaced inward,
The force acting on the flap pieces can be absorbed. On the other hand, at this time, since the thick portion other than the thin portion is supported by the packaged object, the side walls are prevented from being crushed due to vertical storage and the like.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals.

FIG. 1 is a perspective view showing a container 2 according to the present invention for packaging a roll-shaped wrap film as an article to be packaged, showing a state where a lid is lifted. The container 2 is made of one piece of cardboard, preferably having a basis weight of 270 to 600.
It is made from g / m ² coated cardboard.

As shown in the figure, the container 2 has a container body 8 for storing a wrap film 6 wound in a roll shape around a cylindrical paper core 4, and a lid integrally provided on the container body 8. And a body 10. A container 2 for wrapping a typical roll-shaped wrap film, that is, a wrap film 6 having a width of 300 mm and a length of 20 m wound around a core 4 having an outer diameter of about 40 mm, a wall thickness of about 1 mm, and a length of about 380 mm is generally , Length about 310mm, width about 46
mm and a height of about 46 mm.

As shown in FIG. 2, the container body 8 has a rectangular bottom wall 12, a front wall 14 and a rear surface 16 extending vertically upward from respective long edges of the bottom wall 12, and a bottom wall 12. Side walls 18, 18 extend vertically upward from each short edge and connect between opposing ends of the front wall 14 and the rear wall 16. Further, the upper part of the container body 8 is provided with a wrap film 6.
Is opened as an opening 20 for drawing out.

The lid 10 is provided on one rear wall 1 of the container body 8.
6 continuously extending from the top edge of the container body 8 and the opening 2 of the container body 8
0, and a rectangular top wall 22 that substantially covers
The lid side walls 24, 24 extending vertically from the respective short edges to the container body 8 side and the front edges of the side walls 24, 24 extending vertically from the long edge on the front side of the top wall 22 and connecting the side walls 24, 24. And a lid front wall 26. When the opening 20 of the container body 8 is closed by the top wall 22 of the lid 10, the lid front wall 26 is closed.
The lid side walls 24 overlap the front wall 14 of the container body 8 and the outer surfaces of the side walls 18, 18, respectively. A cutter 28 for cutting the drawn wrap film 6 is attached to the inner surface of the edge of the lid front wall 26.

The top wall 22 of the lid 10 and the rear wall 16 of the container body 8 are continuous, and the lid 10 is rotated with the fold line 30 separating the two as a hinge. Since the hinge 30 has some resilience due to the characteristics of the cardboard, the lid 1
Numeral 0 rotates in the direction of arrow A in FIG. Therefore, in the present invention, a flap piece 32 for preventing the lid from floating is provided at the top edge of each side wall 18 of the container body 8, and the flap piece 32 is engaged when the opening 20 is closed. The step 34 is provided on the inner surface of the corresponding lid side wall 24. The flap pieces 32 and the steps 34 will be described later in detail. Further, since the left and right side walls 18, 18 and the lid side walls 24, 24 are substantially the same, the one side wall 18 and the lid side wall 24 will be described as appropriate.

Further, in this embodiment, as shown in FIG. 2, a part of the side wall 18 of the container body 8 is bent inward. The piece 36 contacts the peripheral surface of the end of the stored wrap film 6, and the wrap film 6 is
It functions to prevent dropping from zero.

The container 2 will be described in more detail with reference to FIG.

In FIG. 3, the rectangular portion 12 is the container body 8
The portion 16 which is continuous with the long edge of the portion 12 is a rear wall. Further, a portion 14a continuous with the other long edge of the portion 12 and a portion 14b following the portion 14a constitute the front wall 14. Part 16 and part 14
a is folded about 90 degrees to portion 12 at fold lines 38 and 40, respectively, and portion 14b is folded at fold line 42.
At about 180 degrees with respect to the portion 14a. Then, the portion 14a and the portion 14b are bonded to each other with an adhesive.

A substantially square portion (first piece) 18a continuous with each short edge of the portion 12; a portion (second piece) 18b continuous with each short edge of the portion 14a; A portion (third piece) 18c continuous with each short edge of the portion 16
Constitute left and right side walls 18 of the container body 8 respectively. As shown in FIG. 4, these portions 18a, 18b,
18c is bent by about 90 degrees at the folding lines 44, 46, 48, and is arranged in the order of the part 18c, the part 18b, and the part 18a from the inside of the container body 8, and is adhered to each other by an adhesive.

Each of the portions 18b and 18c has a notch 5
0, 52 are provided, so that the portions 18a, 18b,
When the adhesive 18c is adhered, the upper portion of the side wall 18 of the container body 8 becomes thin as is apparent from FIGS. Therefore, the thin portion 54 can be deformed with a smaller force than the other thick portions 56.

A portion (fourth portion) 32 continuous with the portion 18a is a flap. This part 3
2 is folded outward at the fold line 58 relative to the portion 18 a, ie, the outer surface of the side wall surface 18.

In addition, the flap piece 32 is used when no load is applied.
A suitable angle range with respect to the outer surface of the side wall surface 18, for example, 10
It is necessary to maintain the fold line 58 at a degree of 90 to 90 degrees, so that it is preferable to make a perforation at the fold line 58. In the case of coated cardboard having the above-mentioned basis weight, perforations in which small holes having a length of 3 mm to 5 mm are formed at intervals of 2 mm are preferable. By providing such perforations, the flap pieces 3 centered on the fold line 58 are formed.
After the flap piece 32 is moved while the rotation operation of 2 is smoothed, the flap piece 32 is returned to the above-mentioned angle range by the elastic return force of the fold line 58. Instead of the perforations, the folding line 58 may be a stamped line (a line having a concave shape using a stamping die) or a half-cut line (a line cut into a predetermined depth). It may be.

On the other hand, the part 22 following the part 16 is the lid 1
0 from the long edge of the portion 22 located on the opposite side of the portion 16 from the long edge of the portion 2 forming the lid front wall.
6 is extended. Portion 26 is folded approximately 90 degrees relative to portion 22 at fold line 60. The folding line 62 between the portion 16 and the portion 22 is a portion that functions as a hinge for rotating the lid 10. In addition, a portion (fifth piece) 24a following each short edge of the portion 22 and a portion (sixth piece) 24b following a part of each short edge of the portion 26 cover the lid side wall 24. Make up. These parts 24a, 24
b is bent about 90 degrees at folding lines 64 and 66,
They are bonded to each other with 4b facing inside.

The part 26 is provided with a part 70 through a perforation 68, and this part 70 is bonded to the bonding point 72 of the part 14a before opening, so that the lid 10 Are fixed to the container body 8. In use, this portion 70 is perforated 6
It is cut off from the portion 26 along 8 and peeled off from the bonding point 72. Thereby, the lid 10 can be rotated, and the wrap film 6 can be pulled out from the container body 8.

As shown in FIG. 5, a step 34 having an upward surface is formed on the inner surface of the lid side wall 24 formed by bonding the portion 24a and the portion 24b. When the lid 10 is closed, the flap pieces 32
Are engaged, so that the lid 10 does not rise naturally even if the user releases his / her hand.

In order to facilitate the manufacture of the container 2, it is preferable to make the folding line into a concave shape by using a pressing die or to make a cut of a predetermined depth in the folding line.

The piece 36 for preventing the wrap film 6 from falling off is formed by bending a part of the part 18b adjacent to the part 14b. This part 3
In order to facilitate bending of No. 6, it is preferable to form perforations 73 at predetermined positions of the portion 18b.

Next, the functions of the flap piece 32 of the container body 8 and the step 34 of the lid 10 will be briefly described.

First, when the lid 10 is rotated in the direction of arrow B from the open state shown in FIG. 1, the inner surface of the portion 24b of the lid side wall 24 is brought into contact with the free end of the flap piece 32 as shown in FIG. And the side wall 18 of the container body 8 together with the flap piece 32
Is pushed inward. When the lid 10 reaches the closed position for closing the opening 20, the free end of the flap piece 32 engages with the step 34 of the lid side wall 24. At the moment of this engagement, the container body 8 and the flap piece 32 return to their original positions, so that a refreshing snap sound is generated. The user can recognize from the snapping sound that the lid 10 has reliably reached the closed position. FIG.
As can be understood from FIG. 3, when the flap piece 32 is engaged with the step portion 34, the flap piece 32 functions as a stopper, so that when the container 2 is simply left, the lid 10 naturally rises and The opening 20 is not exposed to the outside.

Conversely, when the lid 10 is forcibly rotated in the direction of arrow A in FIG. 1 to open the opening 20, the flap piece 32 is centered on the top edge of the side wall surface 18 of the container body 8. The upper thin portion 54 of the side wall 18 is moved inward while rotating upward. As a result, the engagement state between the flap piece 32 and the step portion 34 is released, and the lid 10 can be opened (see FIG. 7).

In order to ensure such an operation, the dimensions and shape of each part of the container 2 are very important. Although various dimensions of each part are conceivable, various tests have shown that in the case of the container 2 having the above-described typical dimensions and shapes, a desired effect can be obtained when the following conditions are satisfied. . That is, the numerical values shown below are
Is made from coated cardboard having a basis weight of 270 to 600 g / m ² and its external dimensions are about 310 mm in length and about 46 m in width.
m, a height of about 46 mm, and a roll-shaped wrap film to be stored is wound around a core 4 having an outer diameter of about 40 mm, a wall thickness of about 1 mm, and a length of about 380 mm, and a width of 300 m.
This is obtained when the wrap film 6 is 20 m long and 20 m long.

As shown in FIGS. 5 and 8, the width of the flap piece 32 of the container body 8 is H1, and the step portion 34 of the lid side wall 24 is provided.
H2 / H, where H2 is the distance between
The value of 1 is preferably set so as to satisfy 1.1 ≦ H2 / H1 ≦ 5.0, more preferably 1.2 ≦ H2 / H1 ≦ 2.0. If the value of H2 / H1 exceeds 5.0,
If it is less than 1.1, the lid 10 will not be closed, and even if it is closed, the closing state will be unstable.

Further, as shown in FIG.
When the gap distance from the inner surface to the outer surface of the side wall 18 of the container body 8 is G, the value of G and the relationship between H1 and H2 are physically the relationship of H2>H1> G. You must be satisfied. If this relationship is not met,
The reason is that the flap pieces 32 cannot be engaged with the step portions 34 of the lid 10, so that the floating of the lid 10 cannot be prevented. Further, the present inventors have conducted various tests to determine the value of G and H1.
Was found to be 1.1 ≦ H1 / G ≦ 10.
0, more preferably 1.3 ≦ H1 / G ≦ 3.0. When the value of H1 / G is less than 1.1, the locked state of the lid 10 to the container body 8 becomes unstable, and when this value exceeds 10.0, the flap pieces 32 hinder and the lid 10 Is difficult to cover the container body 8. Actually, about 3.5 m due to manufacturing
The width is preferably m.

Further, as shown in FIG.
Does not extend over the entire width of the side wall 18 of the container body 8, and its front wall side portion and rear wall side portion are notched. When the width of the side wall 18 is W, the length L1 of the notch on the front wall side is set to be 0.05W ≦ L1 ≦ 0.30W, more preferably 0.08W ≦ L1 ≦ 0.12W. Good to do. When the value of L1 is less than 0.05 W, the flap piece 3
2 is firmly fitted into the corner of the step 34 of the lid 10 on the side of the front wall 14 of the container body 8, so that the lid 10 cannot be easily lifted. Also,
If this value exceeds 0.30 W, the durability and function of the flap pieces 32 will be insufficient. In the illustrated embodiment,
The corner portion 74 of the flap piece 32 is inclined because the portion 74 first comes into contact with the step portion 34 when the lid 10 is lifted up. .

When the length of the notch on the rear wall side is L2, the value of L2 is 0.05W ≦ L2 ≦ 0.30W,
More preferably, it is preferable to set 0.18W ≦ L2 ≦ 0.22W. When the value of L2 is less than 0.05 W, the rotation of the flap piece 32 is hindered by the contact between the rear end portion of the flap piece 32 and the lid side wall 24, and the lid 1
The smooth opening and closing of 0 is hindered. Also, L2 is 0.30 W
Is exceeded, the durability and function of the flap pieces 32 are not sufficient.

The thin portion 54 of the side wall 18 of the container body 8
Is for smoothly moving the flap pieces 32 inward. In order to achieve such an object, it is preferable that the thin portion 54 be as large as possible.
However, as described above, since the containers 2 are stacked in the longitudinal direction, there is a problem that if the thin portion 54 is enlarged without limitation, the strength of the side wall 18 of the container body 8 cannot be maintained.

Therefore, according to the present invention, when the roll-shaped wrap film 6 is stored in the container body 8, as shown in FIG. At a position several mm (for example, 2 mm to 6 mm) below the uppermost portion of the end face of the core 4. By sizing in this way, the thick portions 56 other than the thin portions 54 are kept relatively wide.

In this embodiment, as can be seen from FIGS. 5 to 7, the thick portion 56 has a thickness of two or three thick papers.
In addition, since it is supported by the end face of the core 4, the side wall 18
Will have sufficient strength. On the other hand, the thickness of the thin portion 54 is equivalent to one piece of thick paper, and a gap of at least two pieces of thick paper is formed between the portion 54 and the end face of the core 4. When an inward force acts on the portion 54, the flap piece 32 and the thin portion 5 of the side wall 18 are formed.
4 is displaced inward very easily. Further, even if the flap piece 32 is strongly pressed, the thin portion 5
Since the pressing force is absorbed by the displacement of 4, the flap piece 32 is not crushed.

If the lower edge portion of the thin portion 54 is located at the uppermost portion of the end face of the core 4 or at a position higher than the uppermost portion, the thin portion 54 is less likely to be displaced, and the lid 10 is smoothly moved. It is not possible to expect a rotating operation and a reliable floating prevention effect of the lid 10.

The dimensional condition of the thin portion 54 of the side wall 18 can be described as follows. As shown in FIG. 5, when the length of the thin portion 54 in the height direction is P1 and the height of the side wall 18 is P2, the value of P1 / P2 is
0.13 ≦ P1 / P2 ≦ 0.55, more preferably 0.1.
The range is 15 ≦ P1 / P2 ≦ 0.30. If this value exceeds 0.55, the strength of the side wall 18 becomes insufficient, and the strength of the entire container 2 decreases. On the other hand, when it is less than 0.15, as described above, the flap pieces 32 cannot be easily displaced inward of the container body 8 and it is difficult to ensure smooth opening and closing of the lid 10. .

It is preferable that the width of the thin portion 54, that is, the length along the top edge of the side wall 18 is substantially equal to the length L3 of the flap piece 32 opposed thereto.

Next, the results of performance tests of the container according to the present invention will be described. In this test, two kinds of samples 1 and 2 according to the present invention and a conventional sample 3 were used for comparison. The containers of these samples 1, 2, and 3 were produced based on the specifications shown in Table 1 below. Also, the external dimensions of the containers for these samples,
The dimensions of the accommodated roll-shaped wrap film were as described above. Further, these samples are used in a state where the roll-shaped wrap film is stored and the cutout portion 70 following the front wall of the lid is adhered to the front wall of the container body, that is, substantially the same as the product before opening. Was done.

[0046]

[Table 1]

In the performance test using these samples, a lid opening test and a lid closing test were performed.

The lid opening test was performed as follows. First, 50 samples were stored in one cardboard box with the longitudinal direction of the cardboard box oriented vertically, and 15 cardboard boxes were vertically stacked and left for two weeks.
Thereafter, the cardboard boxes of 1 to 5 steps from the bottom were taken out, and each of the 250 samples contained therein was tested for ease of opening the lid immediately after opening. That is, after the cut portion of the sample was cut, the lid was opened by hand. The results of this test are shown in Table 2 below. At the time of this test, there were 5 panelists, and 5 panelists
0 were opened. In Table 2, “◎” indicates that the hand can be easily opened with one hand, “○” indicates that the hand can be opened slightly with one hand, and “△” indicates that the hand cannot be opened with one hand. Then, if it could be opened, “x” indicates that it could not be opened with both hands.

[0049]

[Table 2]

Further, the lid closing test is a test for examining the degree of closing when the lid in the open state of the sample is closed with one hand. That is, it was confirmed whether or not the flap pieces on both sides of the container body were securely fitted to the steps of the lid side wall when the lid body was forcibly pushed into the container body. The number of samples and the number of panelists used are the same as in the above test. The test results are shown in Table 3 below. In Table 3, "◎"
If the flap pieces on both sides are securely fitted to the step,
"△" indicates that only one flap piece was securely engaged with the step, and "x" indicates that both flap pieces were not engaged with the step.

[0051]

[Table 3]

From these test results, it can be seen that the performance of the container according to the present invention has been greatly improved as compared to containers of conventional construction. In particular, since the container according to the present invention can easily open and close the lid with one hand, it can be said that the container is suitable for an actual use mode at home or the like.

Although the preferred embodiments of the present invention have been described in detail, it goes without saying that the present invention is not limited to the dimensions and forms of the above embodiments. For example, in the above embodiment, the shape of the thin portion 54 of the side wall 18 is substantially rectangular, but the shape is not limited to a rectangle as long as a desired function can be obtained. In addition, the free end of the flap piece 32 does not need to be linear, and may be a waveform. Further, the container 2 may be made of a material other than paper, for example, a plastic material.

In the above embodiment, the wrap film 6
Although a part 36 of the side wall 18 is bent as a means for preventing falling off, this part 36 may be bent by a user after opening. In such a case, it is preferable that a portion of the side wall 18 facing the piece 36 be cut off so that the user can easily bend the piece 36. Specifically, it is preferable to form a notch 80 as shown in FIG. 9 in the portion of the first piece 18a where the piece 36 faces.

Furthermore, although the above embodiment is directed to a packaging container for a wrap film, the container of the present invention is applicable to other articles such as rolled aluminum foil.

[0056]

As described above, according to the present invention, when the lid is mounted on the container main body, the flap pieces provided on the side wall of the container main body are surely provided on the step portion of the lid side wall. Since the fitting is performed, the floating of the lid can be reliably prevented.
Therefore, after the lid is closed, the opening of the container body is not exposed to the outside unintentionally, so that it is sanitary and the wrap film can be prevented from rewinding or falling off.

Further, since the upper portion of the side wall supporting the flap piece can easily move inward of the container body, the opening / closing operation of the lid is facilitated, and the handling of the container and its contents becomes easier. Become. In particular, in the case of a wrap film container, since it is often necessary to operate it with one hand at home, smoothing of the opening and closing operation of the lid is a very important effect.

Further, most of the side walls are thick and
Since the containers are supported by the ends of the core, the side walls are not deformed even when the containers are stacked vertically. On the other hand, the force acting on the flap pieces is absorbed by the displacement of the upper thin portion of the side wall, so that the flap pieces are not crushed. Therefore, even after long-term storage,
The lid can be smoothly rotated.

Further, since the inward movement of the flap piece is facilitated, a refreshing snap sound is generated at the moment of engagement between the flap piece and the step portion. Therefore, the user can confirm that the lid is securely closed by the snap sound.

[Brief description of the drawings]

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

FIG. 2 is a partial perspective view showing a side portion of the container of FIG. 1 in an enlarged manner.

FIG. 3 is a development view of the container of FIG. 1;

FIG. 4 is a partial perspective view showing the container of FIG. 1 in the middle of assembly.

FIG. 5 is a cross-sectional view schematically showing a flap piece engaged with a step portion of a lid.

FIG. 6 is a cross-sectional view schematically showing a state of a flap piece and a side wall when the lid is closed.

FIG. 7 is a sectional view schematically showing a state of a flap piece and a side wall when the lid is opened.

FIG. 8 is a partial perspective view showing the shape of a flap piece in the container of FIG.

FIG. 9 is a partial perspective view showing a modification of the present invention.

[Explanation of symbols]

2 ... packaging container, 4 ... core, 6 ... wrap film, 8 ...
Container body, 10: lid, 12: bottom wall, 14: front wall,
16 ... rear wall, 18 ... side wall, 20 ... opening, 22 ... top wall, 24 ... lid side wall, 26 ... lid front wall, 28 ... cutter, 32 ... flap piece, 34 ... step, 36 ... A piece for preventing the wrap film from falling off, 54: a thin portion, 56: a thick portion.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Noboru Shimura 6-11-27 Motofujisawa, Fujisawa-shi, Kanagawa (56) References JP-A-1-254543 (JP, A) JP-A 5-310244 (JP, A) Hikaru 4-89732 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B65D 5/72

Claims (10)

(57) [Claims] 1. A substantially rectangular bottom wall, side walls connected to a pair of opposing edges of the bottom wall, respectively, and another pair of edges of the bottom wall. A container main body provided with a front wall and a rear wall extending between the side walls, and adapted to store a packaged object; and a rotatably connected to a top edge of the rear wall. A substantially rectangular top wall adapted to cover and close an opening in the container body defined by top edges of the side wall, the front wall and the rear wall; Are respectively connected to a pair of edges adjacent to the edge of the top wall to be disposed outside the side wall of the container body when the opening is closed by the top wall. Lid side wall and an edge of the top wall facing the edge serving as the center of rotation A lid front wall extending between the lid side walls and arranged outside the front wall of the container body when the opening is closed by the top wall. In the packaging container, an outwardly extending flap piece is rotatably connected to the top edge of the side wall of the container body, and the flap piece is engaged when the opening is closed by the top wall. Forming a step on the inner surface of the side wall of the lid body to prevent the lid body from rising, and making a predetermined portion of the side wall of the container body facing the flap piece thinner than other portions of the side wall. The inner surface of the other portion is located inside the container body than the inner surface of the predetermined portion, and the length (L3) of the flap piece and the width (L) of the predetermined portion
3) are substantially the same size, and the rear end of the flap piece is spaced apart from the outer surface of the rear wall of the container body by a predetermined first distance (L2), and the rear end of the predetermined portion is A packaging container, which is spaced from the outer surface of the rear wall of the container body by the first distance (L2). 2. The container according to claim 1, wherein the side wall of the container body includes a first piece extending from the bottom wall, and a first piece extending from one of the front wall and the rear wall of the container body inside the first piece. A second piece to be arranged, and a third piece extending from the other of the front wall or the rear wall of the container body and being arranged inside the second piece, and being adhered to each other, The second
The packaging container according to claim 1, wherein a portion corresponding to the predetermined portion of the third piece is cut out. 3. The packaging container according to claim 2, wherein the flap piece is formed by bending a fourth piece connected to the first piece along a folding line. 4. The packaging container according to claim 3, wherein the folding line is formed with a perforation, an embossed line, or a half-cut line. 5. The packaging container according to claim 4, wherein the perforations are formed by forming small holes having a length of 3 mm to 5 mm at intervals of about 2 mm. 6. A fifth piece extending from the top wall and a sixth piece extending from the front wall of the lid and disposed inside the fifth piece. The step is formed by the sixth piece disposed spaced from the inner surface of the top wall a sufficient distance for the flap pieces to engage. The packaging container according to any one of claims 1 to 5. 7. The container according to claim 1, wherein a front end portion of the flap piece located on the front wall side of the container body is separated from an outer surface of the front wall by a predetermined second distance. 4. The packaging container according to 1. 8. The packaged object is a roll-shaped wrap film wound around a cylindrical core, and a center axis of the core is substantially parallel to the front wall and the rear wall of the container body. In the state where the roll-shaped wrap film is housed in the container body, the edge of the predetermined portion on the bottom wall side is the bottom wall at the end face of the core on the side contacting the inner surface of the side wall. The packaging container according to any one of claims 1 to 7, which is located at a position on the bottom wall side by 2 mm to 6 mm from a part farthest from the bottom wall. 9. The packaging container according to claim 1, wherein a part of the side wall of the container main body is bent inward of the container main body to form a member for preventing a packaged object from falling off. . 10. The packaging container according to claim 1, wherein a wrap film is contained in the container body as the packaged object.