JP2003026148A - Packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container whose lid can be kept closed unless a fixing member such as a rubber ring or an adhesive tape is necessarily used and whose manufacturing cost can be minimized. SOLUTION: The packaging container A includes a paper container body 10 and a lid 30 made of a colorless and transparent plastic. Lid receiving pieces 16, 16, 17 and 17 are provided to protrude outwardly on upper rims of respective sidewalls 12, 12, 13 and 13 of the container body 10. A locking projection 37 to be locked with a tip of the lid receiving pieces 17 and 17 when the lid is closed is provided on an internal surface of a pair of opposite sidewalls 33 and 33 of the lid 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container, and more specifically, it can be used, for example, in bowl foods such as oyakodon and beef bowl, as well as foods and liquid seasonings such as yakisoba and takoyaki that produce juice. The present invention relates to a packaging container that is preferably used when packaging the obtained food.

[0002]

2. Description of the Related Art Conventionally, tray-shaped plastic packaging containers have been generally used as containers for packaging foods such as bento boxes at entertainment venues, baseball fields, or inside or outside the store. When selling food using such a plastic container, in order to keep the food hygienic and to keep the food fresh, the container body is covered with a lid or sealed, or the degree of sealing is further increased. It is wrapped in wrap to enhance it and is displayed and sold in this state. According to this container, since the container body is covered with the lid, there is an advantage that the food can be reheated in a microwave oven or the like while being kept in the container.

However, such a plastic container has some problems in the disposal process. In other words, since plastic cannot be decomposed naturally, it must be incinerated when it is disposed of.However, when incinerated, harmful substances that may adversely affect the human body are generated or the incineration occurs. There is a problem that the life of the incinerator is shortened due to the extremely large combustion heat sometimes generated.

Therefore, recently, as a substitute for such a plastic packaging container, a tray-shaped paper container in which both the container body and the lid are made of paper has been used. According to this paper container, the above-mentioned problems do not occur in the disposal of the paper container.

[0005]

However, in a container in which both the container body and the lid are made of paper, the lid is generally closed by attaching a fastening member such as a rubber band or an adhesive tape to the container. Since the lid state was held, the seller needs to attach the fastening member to prevent the lid body from being unintentionally pulled out after the lid body is covered with the lid body. Was troublesome. On the other hand, the purchaser also had to separate and discard the fastening members after the meal was completed, which forced a troublesome separation work.

On the other hand, as a method for holding the lid in the closed state,
The following can be considered. That is, as the lid body, a folded piece is continuously provided at the lower edge of the side wall through a fold, and the folded piece is folded back from the fold to the inner surface side of the side wall and attached to the inner surface of the side wall with an adhesive. By wearing
A step (locking protrusion) corresponding to the thickness of the folded piece on the inner surface of the side wall
To form. Then, the lid is put on the container body, and the stepped portion is locked to a predetermined portion of the container body to keep the lid closed. However, this method requires a troublesome work such as folding back the folded piece and further adhering it to the inner surface of the side wall with an adhesive at the time of manufacturing the lid, and as a result, the manufacturing cost of the lid is high. There was a problem that it was attached.

The present invention has been made in view of the above technical background, and an object thereof is to maintain a closed state of a lid body without necessarily using a fastening member such as a rubber band or an adhesive tape. Another object of the present invention is to provide a packaging container in which the manufacturing cost of the lid can be suppressed as much as possible.

[0008]

In order to achieve the above object, a packaging container according to the invention of claim 1 is a paper container main body in which a plurality of side walls are provided in a rising shape on a peripheral edge of a bottom wall, A packaging container comprising: a lid body having a plurality of side walls hanging down from a periphery of a ceiling wall, wherein a lid receiving piece is provided on an upper edge of each side wall of the container body so as to project outward. On the other hand, locking projections are provided on the inner surfaces of at least a pair of opposed side walls of the lid body, and the locking projections are formed by protruding a part of the opposed side walls inward. It is characterized in that it is locked to the tip edge of the lid receiving piece when the lid is closed.

According to a second aspect of the present invention, in the packaging container according to the first aspect, the locking projections are formed under the condition that the inner surface of each side wall of the lid is superposed on the upper surface of the lid receiving piece. The structure is adopted so that the parts are locked.

In the invention of claim 3, the above-mentioned claim 1 or 2
In the packaging container described above, in the container body, the bottom wall has a rectangular shape, and the container wall is inclined outwardly at a peripheral edge of the bottom wall.
Each of the side walls is provided in an upright shape, and in the lid body, the top wall has a rectangular shape, and the top wall has four edges.
The side walls are provided in a hanging shape, and the locking projection is provided only on the inner surfaces of the pair of opposing side walls of the lid, and the pair of container main bodies corresponding to the pair of opposing side walls. The length dimension of the lid receiving piece provided on the opposite side wall of is set smaller than the length dimension of the lid receiving pieces provided on the other pair of opposite side walls.

According to a fourth aspect of the invention, in the packaging container according to any one of the first to third aspects, the locking protrusions are provided on both side edge portions of the inner surface of the opposed side wall. It was adopted.

According to a fifth aspect of the invention, in the packaging container according to the fourth aspect, between the two engaging projections of the opposite side wall,
A configuration is adopted in which a reinforcing rib portion extending in a direction connecting the both locking convex portions is provided.

According to a sixth aspect of the present invention, in the packaging container according to any one of the first to fifth aspects, in the vicinity of the peripheral edge of the outer surface of the ceiling wall, extending along the peripheral edge and on the ceiling wall. Adopted a structure in which a convex strip is provided to prevent misalignment of stacked packaging containers.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. The front, rear, left and right directions of the packaging container according to the present invention are relative, and in this embodiment, for convenience of description, the four side walls (12) (12) of the container main body are used.
Among the (13) and (13), the pair of opposed side walls (13) and (13) provided with the lid receiving pieces to which the locking projections of the lid are locked are described as the left side wall and the right side wall.

As shown in FIGS. 1 and 2, the packaging container (A) of this embodiment is a food packaging container for packaging food such as parent-child bowls and beef bowls, and tray-shaped paper. A container body (10) made of corrugated cardboard and a colorless transparent plastic lid body (30) having a wall thickness of 0.2 to 1 mm and fitted on the container body (10) in an externally fitted state.

The container body (10) is a so-called blank obtained by punching a wide and wide paper corrugated cardboard material with a press punching device into a predetermined shape. 0.5 to 1.5 mm).

FIG. 9 is a development view of the container body (10) as seen from the inner surface side. On the entire inner surface of the container body (10), a sheet of antifouling film (F) for preventing contamination due to contact with food is laminated in a state of being partially adhered with a peelable adhesive. There is. (T) shows the adhered portion of the stain prevention film (F). The sticking part (T) is formed in a linear shape. As the peelable adhesive to which the antifouling film (F) is attached, a peelable adhesive called a so-called light peeling adhesive that can easily peel off an adherend is used. Speaking specifically, for example, an emulsion type adhesive "TX-1286" manufactured by Tohitsu Kasei Co., Ltd. is used.

The antifouling film (F) is made of a colorless and transparent plastic having excellent water resistance and oil resistance. Specifically, it is made of a colorless transparent PET resin having a thickness of 40 to 100 μm. Is. The antifouling film (F) is formed in the same shape and size as the container body assembling piece, and therefore has a portion corresponding to all the constituent portions of the container body (10). The stain prevention film (F) may be made of a thin paper (for example, a thickness of 40 to 80 μm) having excellent water resistance and oil resistance.

Thus, this stain prevention film (F)
Is laminated on the inner surface of the container body (10) as follows. That is, during the punching process of the container body assembling pieces described above, a peelable adhesive is applied to a predetermined portion of the surface of the paper corrugated board material which is the inner surface of the container body, and then a long and wide stain is applied to this surface. After the prevention film material is laminated and the film material is pasted, it is punched into a predetermined shape together with the container body assembling piece with the press punching device in the laminated state, so that the container body assembling piece is It is laminated on the entire inner surface. Then, by assembling the container body assembling pieces in the container body shape in this laminated state, each part of the stain prevention film (F) is laminated on the inner surface of the corresponding constituent part of the container body (10). Is.

Next, the structure of the container body (10) will be described.

As shown in a developed view in FIG. 9, the container body (10) is provided with a rectangular bottom wall (11). In this embodiment, the bottom wall (11) is square. . Then, along the periphery of the bottom wall (11), the folds (21) (21) (21) (21)
Four side walls (12) front, rear, left and right inclined outward through
(12), (13) and (13) are provided in a rising shape.

Further, these four side walls (12) (1) (1)
2) In (13) (13), between the side edges of the two side walls (12) (13) adjacent to each other, a half-folded connecting piece (15).
Is intervening.

This connecting piece (15) is provided on each of the adjacent side walls (1
2) A pair of substantially triangular fold halves (15a) that are connected to the side edges of (13) via folds (22) and (22) and are also connected to each other through folds for folding (23). It consists of (15b). And
The pair of folded halves (15a) (15b) are folded into two folds from the folds for folding halves (23) without sticking their inner surfaces to each other, and the front side wall (12) is left in the folded state. ) Is attached to the outer surface of the side end portion or the outer surface of the side wall portion of the rear side wall (12) by superposition (see FIG. 4), whereby two adjacent side walls (12) (13) are attached to each other. Are connected to each other and are held in a rising state. On the other hand, the connecting piece corresponding part of the antifouling film (F) laminated on the inner surface of each connecting piece (15) is partially adhered by the above-mentioned peelable adhesive and is in a laminated state. Until then, the folding piece (23) is folded in half along with the connecting piece (15) so that the portion corresponding to the connecting piece of the antifouling film (F) is a double-folded connecting piece (15).
It is in a state of being folded in between.

Folds (24) (24) (24) are provided on the upper edges of the front side wall (12), the rear side wall (12), the left side wall (13) and the right side wall (13) of the container body (10), respectively. A front lid receiving piece (16), a rear lid receiving piece (16), a left lid receiving piece (17), and a right lid receiving piece (17) are arranged in series via (24). The front, rear, left and right lid receiving pieces (16), (16), (17) and (17) are all bent outwardly from the fold (24) as shown in FIG. In addition, these lid receiving pieces (16) (16)
(17) The folding operation of (17) is performed at the time of the lid closing operation as described later. And each lid receiving piece (16)
(16) (17) (17), under the closed state, as shown in FIG. 2 and FIG.
The corresponding side walls (32), (32), (33) and (33) of (0) which will be described later are bent substantially obliquely downward while the inner surfaces are superposed.

[0025] These front, rear, left and right lid receiving pieces (16) (16)
(17) (17), the length dimension of the left and right lid receiving pieces (17) (17) is set smaller than the length dimension of the front and rear lid receiving pieces (16) (16), Specifically, the length is set to about half the length of the front and rear lid receiving pieces (16) (16).

Further, claw pieces (16a) are provided on both side edges of the front and rear lid receiving pieces (16) (16). Then, as shown in FIG. 1, the claw pieces (16a) are attached to the left and right side walls (1
3) It is locked to the upper end of the side edge of (13), whereby the inward movement of the front and rear side walls (12, 12) is restricted, that is, the front and rear side walls (12) ( It is said that there is no problem that 12) moves from the original posture that is inclined outward to the upright posture and then to the posture that is inclined inward.

In addition, the front and rear lid receiving pieces (16) (16) are provided at one side edge portion of the tip end portion thereof with a substantially arcuate projecting piece (18) protruding outward through a fold (26). ) Is provided.

Next, the structure of the lid (30) will be described.

The lid (30) is made of colorless and transparent plastic as described above, and specifically, is made of colorless and transparent PET resin.

The lid body (30) is manufactured by thermoforming using a mold, and has a square ceiling wall (31) as shown in FIGS. 1 and 2. In the embodiment, the ceiling wall (31) has a square shape. Then, four sidewalls (32), (32), (33) and (33) that are inclined outward are provided in a peripheral shape of the ceiling wall (31) in a hanging shape.

As shown in FIG. 1, of the four side walls (32) (32) (33) (33) of this lid (30), the left and right side walls (3
3) Locking protrusions (37) are provided on both side edges of the inner surface of (33). The locking protrusion (37) is provided on the lid (30).
The left and right side walls (33) (33) are formed by projecting inwardly at the same time when molding is performed, that is, the locking projections (37) are molded by a mold. . On the other hand, such locking protrusions are not provided on the inner surfaces of the front and rear side walls (32) (32).

As shown in FIGS. 3 (c) and 6, the lid body (30) is placed on the locking projections (37) provided on the inner surfaces of the left and right side walls (33) (33). A closed state of the lid body (30) is maintained by locking the side surface portion (37a) to the tip edges of the left and right lid receiving pieces (17) (17) of the container body (10). Has been made.

Further, as shown in FIGS. 2 and 3B, both locking projections (3) on the left and right side walls (33) (33).
A reinforcing rib portion (38) extending in a direction connecting the locking projections (37) and (37) in a straight line is provided between the portions (7) and (37) so as to bulge outward. The reinforcing rib portion (38) is for reinforcing the side wall (33), and by reinforcing the side wall (33) in this way, the lid receiving portion of the locking convex portion (37) will be described later. The piece (17) can firmly hold the locked state to the leading edge.

Further, as shown in FIG. 2, in the vicinity of the peripheral edge of the outer surface of the ceiling wall (31), a packaging container (A, FIG. 1) extending along the peripheral edge and stacked on the ceiling wall (31). 6) is provided over the entire circumference to prevent displacement of the top wall (39), and the top wall (39) is reinforced by this displacement prevention protrusion (39). Has been done.

In the container (A) having the above-mentioned structure, when carrying out the boxing work for putting food into the container body (10),
Since the side walls (12) (12) (13) (13) of the container body (10) are inclined outward as described above, a plurality of empty container bodies (10) can be stacked. The boxing work can be performed and the boxing work space can be effectively utilized.

Next, the lid (30) in this container (A)
The lid closing operation will be described with reference to FIGS. 4 and 5. In addition, in the container body (10) shown in FIG. 4, the front, rear, left and right lid receiving pieces (16), (16), (17) and (17) are all still folds (24) (24) (24). Not bent from (24), that is, each side wall (12) of the container body (10).
It is located in the plane containing (12), (13) and (13).

First, as shown in FIG. 4, the lid body (30) is put on the container body (10) containing the food (not shown) from above. At this time, the four side walls (1
2), (12), (13) and (13) are inclined outward and the lid receiving pieces (16) (16) are placed in a plane including the side walls (12) (12) (13) (13). ) (17) (17) is located, and the length dimension of the left and right lid receiving pieces (17) (17) among the front, rear, left and right lid receiving pieces (16) (16) (17) (17) Is set to be smaller than the length dimension of the front and rear lid receiving pieces (16) (16). In other words, the length dimension of the front and rear lid receiving pieces (16) (16) is Since it is set to be larger than the length dimension of the pieces (17) (17), as shown in FIG. 5, a lid closing operation of the lid body (30) (that is, a covering operation of the lid body (30)) is performed. On the way, the lower edges of the front and rear side walls (32, 32) of the lid body (30) come into contact with the inner surfaces of the front and rear lid receiving pieces (16, 16).

In this abutting state, the left and right lid receiving pieces (17) (17) are bent outwardly from the folds (24) (24) by both hands, and the lid body (30) is 10) cover deeper. With the lid closing operation of the lid body (30), the front and rear lid receiving pieces (16) (16) are attached to the front and rear side walls (32) (3) of the lid body (30).
2) It is pushed by the lower edge and forcibly bent outward from the folds (24) (24), and finally the front and rear lid receiving pieces (16) (16) are projected in a substantially oblique downward direction. Can be folded into
On the other hand, the left and right lid receiving pieces (17) (17) bent outward with both hands are accompanied by the lid closing operation of the lid (30), and the left and right side walls of the lid (30) (from the top side). 33) (33) It is pushed by the inner surface and finally bent in a substantially oblique downward protruding shape.

On the other hand, when the lid body (30) is closed, the side walls (32) (32) (33) (33) of the lid body (30) have their corresponding lid receiving pieces (16) (16). (17) Move down while sliding on the upper surface of (17). Then, the upper side surface portion (37a) of the locking convex portion (37) provided on the inner surface of each of the left and right side walls (33) (33) of the lid body (30) is attached to each of the left and right lid receiving pieces (17) ( When the position of the tip edge of 17) is exceeded, the left and right lid receiving pieces (17)
(17) clicks due to its own elastic repulsive force and moves outward, whereby the locking projection (37) engages with the tip edges of the left and right lid receiving pieces (17) (17). It will be stopped (see FIG. 3C and FIG. 6). As a result, the lid (30)
Is locked so that it will not accidentally pull out, and it will be held in the closed state.

When the lid body (30) is in the closed state, as shown in FIG.
As shown in (a) to (c), each side wall (3
The inner surface of 2) (32) (33) (33) is the corresponding lid receiving piece (16)
(16) (17) It is in a state of being superposed on the upper surface of (17). Therefore, the degree of sealing of the container (A) is extremely high. Since the closed state of the lid body (30) is maintained in such a high degree of sealing, when reheating the food in a microwave oven, etc. Can be rewarmed. Furthermore, according to this container (A), the lid (30) can be maintained in the closed state without using a fastening member such as a rubber band or an adhesive tape. Can be reduced to reduce the total amount of garbage. Moreover, there is no problem that the lid (30) is unintentionally pulled out when handing it to the purchaser or carrying it.

Further, this container (A) can eliminate the following problems. That is, the lid receiving pieces (16) (1) are attached to the upper edges of the side walls (12) (12) (13) (13).
6) According to the conventional container provided with (17) and (17), each lid receiving piece is accompanied by the lid closing operation of the lid (30) during the lid closing operation of the lid (30). (16) (16) (17) (17) has a problem of being bent inward. In order to solve this problem, it is necessary to bend the front, rear, left and right lid receiving pieces (16) (16) (17) (17) outward in advance when performing the lid closing operation of the lid body (30). However, the operation of closing the lid (30) was troublesome. On the other hand, according to the container (A) of this embodiment, front and rear lid receiving pieces (16) (16)
Since the length of the lid is set larger than the length of the left and right lid receiving pieces (17) (17), as described above, during the lid closing operation of the lid (30), Lid receiving pieces (16)
Front and rear lid receiving pieces (16) (16) of (16) (17) (17)
The lower edges of the side walls (32) (32) at the front and rear of the lid (30) come into contact with the inner surface of the. Therefore, the front and rear lid receiving pieces (16) (16) are automatically bent outward along with the closing operation of the lid body (30). Therefore,
According to the container (A) of this embodiment, the front and rear left and right lid receiving pieces (16) (16) (17) are used when the lid body (30) is closed.
Only the left and right lid receiving pieces (17) and (17) of the (17) may be bent outward in advance, so that the lid closing operation of the lid (30) can be performed with good workability.

On the other hand, if the left and right lid receiving pieces (17) (1
Regarding the length dimension of 7), the front and rear lid receiving pieces (16) (1
If the length is set to be the same as that of 6), the following problems will occur. That is, the length of the left and right lid receiving pieces (17) (17) is set to be large,
The height positions of the tip edges of these left and right lid receiving pieces (17) (17) in the closed state are low. In order for the locking projections (37) to be locked to the tip edges of the left and right lid receiving pieces (17) (17) whose height positions are lowered as described above, the left and right sides of the lid body (30) are The length of the side walls (33) (33) has to be set longer, and as a result, the material cost of the lid (30) is increased. On the contrary,
According to the container (A) of this embodiment, of the front and rear lid receiving pieces (16) (16) (17) (17), only the length dimensions of the front and rear lid receiving pieces (16) (16) are determined. Since the length of the left and right lid receiving pieces (17) (17) is set to be small, the material cost of the lid (30) can be kept as low as possible.

Furthermore, this container (A) can eliminate the following problems. That is, if the locking projection (37) is provided, the left and right side walls (33) (3) of the lid (30) are
When it is provided in the widthwise center of the inner surface of 3),
When the container body (10) is lifted by hand, the center portions in the width direction of the side walls (12), (12), (13) and (13) of the container body (10) may be pushed inward by hand and curved. is there. When the side walls (12), (12), (13) and (13) are curved in this way, the widthwise middle portions of the left and right lid receiving pieces (17) and (17) are also curved inward with this bending operation. As a result, the locking protrusion (37)
Is disengaged from the tip edges of the left and right lid receiving pieces (17) (17), and the lid (30) is unlocked. On the other hand, in the container (A) of this embodiment, the locking protrusions (37) are provided on both side edges of the inner surfaces of the left and right side walls (33) (33) of the lid (30). , Even if the central portions in the width direction of the side walls (12), (12), (13) and (13) of the container body (10) are curved as described above, the locking protrusions (37) have left and right lid supports. Pieces (17) (17) Hard to come off from the edge. Therefore, according to this container (A), the closed state of the lid body (30) can be firmly held even when the container body (10) is lifted by hand.

Furthermore, according to the container (A) of this embodiment, the space between the locking projections (37) (37) on the left and right side walls (33) (33) of the lid (30) is reduced. Since a reinforcing rib portion (38) extending in a direction connecting both locking convex portions is provided, and the left and right side walls (33) (33) are reinforced by the reinforcing rib portion (38), if the container body is provisionally provided. Even when the left and right side walls (33) (33) of the lid (30) are inadvertently hit by the hand or the like when the (10) is lifted by hand, the side walls (33) (33) are mostly Without being deformed, the locked state of the locking projection (37) to the leading edge of the lid receiving piece (17) is maintained.

Further, this container (A) can eliminate the following problems. That is, as shown in FIG. 6, if a new packaging container (A) is piled up and placed on the ceiling wall (31) of the container (A), the ceiling wall (31) generally faces downward. It may be pressed and deformed.
When the top wall (31) is deformed in this manner, the left and right side walls (33) (33) of the lid body (30) open outward due to this deforming operation, and as a result, the locking protrusion ( 37a) is disengaged from the tip edges of the left and right lid receiving pieces (17) (17), and the lid (30) is unlocked. On the contrary,
In the container (A) of this embodiment, the top wall (3
A ridge for preventing displacement (39) extending along the periphery of the outer surface of (1) is provided near the periphery, and the ceiling wall (31) is reinforced by the protrusion for preventing displacement (39). Therefore, even when a new packaging container (A) is stacked and placed on the top wall (31) of the container (A), the top wall (31) is hardly deformed, and as a result, the locking is achieved. The engagement state of the convex portion (37) with the leading edge of the lid receiving piece (17) is maintained.

Next, the lid (30) in this container (A)
The lid opening operation will be described. First, as shown in FIG. 7, the fingertip is hooked on the lower edge of the right side wall (33) and / or the lower edge of the left side wall (33) of the lid body (30) to forcibly open the side wall outward. By this opening operation of the side wall (33), the locking convex portion (37) is disengaged from the leading edge of the lid receiving piece (17), and thus the lid body (30) is unlocked, so that the lid body (30) is released. It becomes possible to open.

When performing the above-described lid opening operation, in this embodiment, since the side wall (13) of the container body (10) is inclined outward, the side wall (13) and the lid body (30). Since a gap (S) is formed between the side wall (33) of the lid (30), the fingertip can be easily hooked on the lower edge of the side wall (33) of the lid (30), and thus, the lid (30). ), The lid opening operation can be easily performed. Moreover, in the container (A) of this embodiment, the side wall (33) of the lid (30) is also inclined outward, so that the side wall (13) of the container body (10) and the lid ( Since a very large gap (S) is formed between the side wall (33) of the (30), the finger hooking operation can be performed more easily, and therefore the lid (30).
The lid opening operation can be performed more easily.

Further, in the container (A) of this embodiment, since the stain prevention film (F) is laminated on the entire inner surface of the container body (10), foods (beef bowl, beef bowl,
Oyster bowls, oden, etc.) or liquid seasonings or foods with oil (Takoyaki, yakisoba, etc.) placed in the container body (10), the juice or liquid seasoning will remain in the container body (10). There is no such a problem that the inner surface gets dirty due to the penetration of the like. Moreover, since the portion corresponding to the connecting piece of the antifouling film (F) is also laminated on the inner surface of the connecting piece (15), it is assumed that the inside of the container body (10) is temporarily provided between the folded connecting pieces (15). Even if the soup, the liquid seasoning, etc. infiltrate, it is possible to prevent the inner surface of the connecting piece (15) from being contaminated due to the infiltration.
Therefore, according to this container (A), after the container is used (that is, after meals), the purchaser tears off the stain prevention film (F) and separates it, so that the container body (10) can be kept in a clean state. Can be used for regeneration.

When the antifouling film (F) is to be peeled off and separated from the inner surface of the container body (10) after the container is used, as shown in FIG. 8, first, the container body (10) is removed.
The two-folded connecting piece (15) is forcibly peeled off from the outer surface of the side wall (12). As a result, the container body (10) is disassembled and the half-folded connecting piece (15) is opened. Next, the projecting piece (18) of the container body (10) is bent from the fold (26), and the antifouling film (F) is flipped over from the upper surface of the projecting piece (18) and picked, from which the antifouling film (F) ) Is peeled off. At this time, since the half-folded connecting piece (15) is in the open state as described above, the antifouling film (F) can be peeled off without being interfered with by the connecting piece (15). it can.

In this container (A), since the antifouling film (F) is adhered by a peelable adhesive, the film (F) is adhered during the peeling of the film (F). The film (F) can be neatly peeled off without causing the problem that the film (F) is torn at a portion and a part of the film remains on the inner surface of the container body (10). Moreover, since the film (F) is partially adhered, the total area of the adhered part (T) of the film is small, and therefore the film (F) can be peeled off with a slight force.

According to this container (A), since the lid body (30) is separate from the container body (10), the lid body (30) can be used repeatedly. Moreover, since the side walls (32) (32) (33) (33) of the lid body (30) are inclined outward, the container body (10) of the lid body (30).
The covering operation (that is, the lid closing operation) can be easily performed.

Further, since the lid body (30) is made of plastic, it can be manufactured by thermoforming using a die. Therefore, it is possible to easily form the predetermined portions such as the locking convex portion (37), the reinforcing rib portion (38), the positional deviation preventing convex strip (39) and the like.

Moreover, since the lid body (30) is made of transparent plastic, even if the lid body (30) is covered with the container body (10), the food (packaged object) in the container body (10) Can be shown to the customer. Moreover, in this embodiment, since the lid body (30) is made of colorless transparent plastic, the color of food can be accurately shown.

Although the packaging container (A) according to the embodiment of the present invention has been described above, the present invention is not limited to the one shown in the above embodiment, and various settings can be changed.

For example, in the above embodiment, the lid body (30) is made of transparent plastic and is manufactured by thermoforming using a mold, but in the present invention, the lid body is also made of paper. However, it may be one formed by putting pulp in a mold, that is, one formed of a pulp molded product. Also in this case, the locking projection (37) of the lid is formed at the same time when the lid is molded, that is, the locking projection (37) is molded by a mold.

Further, the container body (10) is made of cardboard in the above embodiment, but in the present invention, it is also made of cardboard (for example, a wall thickness of 0.3 to 2 mm). It may be.

Further, the reinforcing rib portion (38) is provided at a predetermined portion of the left side wall (33) and the right side wall (33) of the lid body (30) in the above embodiment, but in the present invention, the lid is further provided. Body (3
The front side wall (32) and the rear side wall (32) of 0) may be provided so as to extend along the lower edge thereof.

[0058]

As described above, according to the packaging container of the first aspect of the present invention, the locking projection is formed by inwardly projecting a part of the opposite side wall of the lid. Therefore, the locking protrusion can be easily formed on the lid, and thus the manufacturing cost of the lid can be kept low.

Moreover, since the container body is made of paper, the container body can be recycled as paper after use of the container,
Even when the container body is incinerated without being regenerated, there is no problem such as generation of harmful substances during the incineration.

Further, according to this container, the locking protrusion is
Although it is locked to the tip edge of the lid receiving piece when closing the lid, it is possible to maintain the lid closed state without necessarily using a fastening member such as a rubber band or an adhesive tape. It is possible to reduce the number of members used at times and the like, and reduce the total amount of dust.

According to the packaging container of the second aspect of the present invention, the locking projection is locked under the condition that the inner surface of each side wall of the lid is overlapped with the upper surface of the lid receiving piece. Therefore, the degree of sealing of the container can be increased. Therefore, when the object to be packaged is, for example, food, it is possible to efficiently reheat the food in a microwave oven or the like without necessarily covering the container with wrap or the like.

According to the packaging container of the third aspect of the present invention, the container body has a rectangular bottom wall, and four side walls inclined outward are provided on the periphery of the bottom wall in a rising shape. Further, the locking projection is provided only on the inner surfaces of the pair of opposed side walls of the lid body, and the lid receiver provided on the pair of opposed side walls of the container body corresponding to the pair of opposed side walls. Since the length dimension of the piece is set to be smaller than the length dimension of the lid receiving pieces provided on the other pair of opposing side walls, other pieces of the container main body are accompanied by the lid closing operation of the lid body. The lid receiving pieces provided on the pair of opposed side walls are automatically bent outward. Therefore, at the time of closing the lid, only the pair of lid receiving pieces out of the four lid receiving pieces need to be bent outward in advance, and therefore the lid closing operation of the lid can be performed with good workability. It can be carried out.

Moreover, the length dimension of the lid receiving pieces provided on the pair of opposing side walls of the container body is set to be smaller than the length dimension of the lid receiving pieces provided on the other pair of opposing side walls. Therefore, the length dimension of the pair of opposed side walls of the lid can be set short, and thus the material cost of the lid can be suppressed as low as possible.

According to the packaging container of the fourth aspect of the present invention, since the locking projections are provided on both side edges of the inner surface of the opposing side wall, if the container body is to be manually lifted, Even when the widthwise central portion of each side wall of the main body is pushed inward and curved, the locking projection is unlikely to come off from the tip edge of the lid receiving piece. Therefore, according to this packaging container, the closed state of the lid can be firmly held.

According to the packaging container of the fifth aspect of the present invention, since the reinforcing rib portion extending in the direction connecting the two locking projections is provided between the two locking projections on the opposite side wall. Even if the side wall of the lid accidentally hits the side wall of the lid body when the container body is lifted by hand, the side wall is hardly deformed, and as a result, the locking protrusion is the tip of the lid receiving piece. It is hard to come off the edge. Therefore, according to this packaging container, the closed state of the lid can be held more firmly.

According to the packaging container of the sixth aspect of the present invention, in the vicinity of the peripheral edge of the outer surface of the ceiling wall, a convex strip for extending the peripheral edge of the packaging wall and preventing displacement of the packaging container stacked on the ceiling wall is provided. Are provided along the peripheral edge, the top wall is reinforced by the protrusions for preventing displacement. Therefore, not only can a new packaging container be stably stacked on the ceiling wall, but even when the packaging container is stacked on the ceiling wall in this way, the ceiling wall is hardly deformed, As a result, it becomes difficult for the locking protrusion to come off from the tip edge of the lid receiving piece. Therefore, according to this packaging container, the closed state of the lid can be held more firmly.

[Brief description of drawings]

FIG. 1 is a perspective view showing a packaging container according to an embodiment of the present invention separately shown in a container body and a lid.

FIG. 2 is a perspective view showing the same container in a closed state.

3 (A) is a sectional view taken along the line III (A) -III (A) in FIG.
(B) is a sectional view taken along line III (B) -III (B) in FIG. 2, and (C) is a sectional view taken along line III (C) -III (C) in FIG. 2.

FIG. 4 is a perspective view showing a state in the middle of a lid closing operation in the same container.

FIG. 5 shows a state in the middle of the lid closing operation in the same container,
It is sectional drawing corresponding to the VV line in FIG.

FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 3, showing the packaging container stacked on the ceiling wall in the same container.

FIG. 7 is a cross-sectional view showing a state in the middle of the lid opening operation in the same container.

FIG. 8 is a perspective view showing an example of a peeling-off operation of the stain prevention film in the container.

FIG. 9 is a development view of a container body of the same container.

[Explanation of symbols]

A ... Packaging container 10 ... Container body 11 ... Bottom wall 12, 12 ... Front side wall and rear side wall 13, 13 ... Left side wall and right side wall (a pair of opposing side walls of container body) 16, 16 ... Front lid receiving piece and rear side Lid receiving piece 17, 17 ... Left lid receiving piece and right lid receiving piece 30 ... Lid body 31 ... Top wall 32, 32 ... Front side wall and rear side wall 33, 33 ... Left side wall and right side wall (a pair of opposing side walls of the lid body) ) 37 ... Locking convex portion 38 ... Reinforcing rib portion 39 ... Misalignment preventing ridge F ... Contamination preventing film T ... Adhesive portion

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Claims (6)

[Claims] 1. A plurality of side walls (12) around the bottom wall (11).
(12) (13) (13) is a paper container main body (10) provided in a rising shape, and a plurality of side walls (3) around the top wall (31).
2) A packaging container (A) comprising: a lid (30) in which (32) (33) (33) is provided in a hanging shape, wherein each side wall (12) of the container body (10). (12) (13) (13)
While the lid receiving pieces (16) (16) (17) (17) are provided on the upper edge of the lid so as to project outward, on the inner surfaces of at least a pair of opposing side walls (33) (33) of the lid body (30). A locking projection (37) is provided, and the locking projection (37) is formed by protruding a part of the facing side walls (33) (33) inward, A packaging container, characterized in that it is adapted to be locked to a tip edge of the lid receiving piece (17) at times. 2. Side walls (32) (32) of the lid (30)
(33) The inner surface of (33) is the lid receiving piece (16) (16) (17)
The packaging container according to claim 1, wherein the locking projection (37) is locked in a state of being superposed on the upper surface of the (17). 3. The container body (10) includes the bottom wall (11).
Is a rectangular shape, and four side walls (12), (12), (13) and (13) inclined outward are provided on the periphery of the bottom wall (11) in a rising shape, and the lid is In the body (30), the top wall (31) has a rectangular shape, and four side walls (32) (32) (33) are provided on the periphery of the top wall (31).
(33) is provided in a hanging shape, and the locking projection (37) has a pair of opposing side walls (3) of the lid (30).
3) The container body (10) provided only on the inner surface of the (33) and corresponding to the pair of opposing side walls (33) (33).
The length dimension of the lid receiving pieces (17) (17) provided on the pair of opposing side walls (13) (13) is different from that of the other pair of opposing side walls (12).
The packaging container according to claim 1 or 2, wherein the length is smaller than the length dimension of the lid receiving pieces (16) (16) provided in the (12). 4. The packaging container according to claim 1, wherein the locking projections (37) are provided on both side edges of the inner surface of the opposing side walls (33) (33). . 5. A reinforcing rib portion (38) extending between the both locking projections of the opposite side walls (33) (33) in a direction connecting the both locking projections.
The packaging container according to claim 4, further comprising: 6. A ridge (39) extending along the periphery of the top wall (31) for preventing displacement of a packaging container that is stacked on the top wall (31) near the periphery of the outer surface of the top wall (31). The packaging container according to any one of claims 1 to 5.