JP2021155057A - Packaging container and plate material of the same - Google Patents

Abstract

To provide a packaging container which achieves both a demand of space saving in stock and stability during transportation and ease of handling demanded in an automatic packing line.SOLUTION: A packaging container comprises a cylindrical trunk part (D), and a lid part (F) which closes openings at both longitudinal ends of the trunk part in an opening/closing manner. The trunk part (D) is formed by the connection of each lateral end (d) of an upper surface plate (11) and a lower surface plate (12). The upper surface plate (11) and the lower surface plate (12) have a pair of shape restriction folding lines (b11, b11, b12, b12) which connect connection lines facing each other which extend symmetrically in the longitudinal direction to connect the lid part (F) and the trunk part (D), and swell in a convex shape to the lateral end (d) side at a central portion in the longitudinal direction, respectively.SELECTED DRAWING: Figure 1

Description

The present invention relates to a packaging container assembled by bending and pasting key points of a single plate material and the plate material thereof, and more particularly to a pillow-shaped packaging container.

Conventionally, as a pillow-shaped packaging container, for example, a paper container for wrapping accessories, neckties, confectionery, etc. has been known.

Utility Model Registration No. 3032550

The paper container described in Patent Document 1 is assembled as a container by bending and pasting key points of a single paper plate material. In this paper container, the upper surface plate, the lower surface plate, and the glue margin are connected by a fold line, and each is bent through the fold line and the glue margin is adhered to any of the front and lower surface plates to form a bag shape. That is, the upper and lower ends of the upper surface plate and the lower surface plate are respectively projected outward in a smooth curved shape starting from the left and right corners, and are curved inward facing the smooth curved protruding edge. A foldable concave arc-shaped fold line is provided, and the outside of these concave arc-shaped fold lines is a lid piece and a bottom piece.

The bottom piece of the lower surface plate forms a concave arc-shaped folding line inward of the lower surface plate with respect to the horizontal plane cut off by a straight line connecting the left and right corners of the lower end of the lower surface plate. In addition, the space between the smooth curved fold line and the horizontal plane is used as the glue margin, and the bottom piece of the top plate is provided with a fold line in a straight line connecting the left and right corners of the lower end of the top plate, and the tip side from this fold line is formed as the glue margin. There is.
Since it is formed in this way, the glue margin at the lower end of the upper surface plate is bent at a folding line and bonded to the glue margin at the lower end of the lower surface plate to complete a bag-shaped packaging container with a closed bottom.
With this configuration, the bottom can be completely sealed during use, and can be stacked in a flat shape when not in use. It is mainly intended to be stocked at retail sites and used for sale.

However, in recent years, an automatic packing line has been introduced and has come to be used for packing when shipping various items. Work that was conventionally done manually is being replaced by automatic work using robots and the like. In this case, for packing, the goods to be shipped (not shown) are put in a packaging container such as an individual packaging box, further stored in a cardboard box (outer box) of a standardized size, and then loaded on a truck or the like. It is often shipped at. The standardized square box is used because it is convenient for handling.
In such an automatic packing line, packaging containers are conveyed by a belt conveyor method. Therefore, the pillow-shaped packaging container 1'as shown in the conventional example (FIG. 13) is composed of a body portion D'and a lid portion F', and the body portion F'is a cylinder folded back at the end portion d'. The article is stored in the hollow inside of the shape, but the stability is low during transportation because the center of the body D'is convex, and the orientation of the packaging container 1'is determined on the conveyor. It was difficult for the packing robot to detect the position and orientation of the packaging container 1'and pick it up, or to move it in the desired direction along the branched line.

On the other hand, such a pillow-shaped packaging container 1'can be assembled from a single plate material only by bonding and bending. Therefore, if it can be used in an automatic packing line, a lid closing step such as using an adhesive tape becomes unnecessary, and the robot can easily assemble, store, and pack.

In addition, the packaging container assembled from a single plate can be stored and transported in a compact state by stacking the folded plates in the unwrapped stage, and can be assembled three-dimensionally at the time of use. Furthermore, in the case of paper, it can be recycled after use, which contributes to improving the global environment.

In view of such a situation, the present invention provides a packaging container that achieves both the demand for space saving during stocking and the stability and ease of handling during transportation required by an automatic packing line.

(Solution 1)
The present invention
A packaging container including a tubular body portion and a lid portion that opens and closes openings at both ends of the body portion in the longitudinal direction, and the body portion is connected to the side ends of an upper surface plate and a lower surface plate. The upper surface plate and the lower surface plate extend symmetrically with respect to the longitudinal direction to connect the facing connecting lines connecting the lid portion and the body portion, and are convex toward the side end side at the central portion in the longitudinal direction. It is characterized by having a pair of bulging shape-regulating fold lines.

With such a configuration, the packaging container of the present invention is formed by connecting the side ends of the upper surface plate and the lower surface plate, and disperses the distortion of the body portion and the lid portion to provide cosmetic properties. Can be closed, and a substantially flat stable portion can be formed in the central portion of the body portion. Therefore, it is possible to achieve both the demand for space saving when stocking the packaging container and the stability and ease of handling during transportation required by the automatic packing line.

(Solution 2)
Further, the lid portion is composed of one lid plate, and the body portion may have a lid locking means for locking the edge of the lid plate between the shape-regulating fold line and the side end. desirable.

With such a configuration, the lid plate can be reliably closed to the insertion hole which is the lid locking means, even though the lid plate is configured as one piece.

(Solution 3)
Further, it is desirable that the body portion has a shape-regulating auxiliary folding line between each shape-regulating folding line and the side end.

With such a configuration, even if the bulk of the article to be stored in the packaging container becomes high, the shape regulation auxiliary folding line disperses the distortion during assembly that occurs in the body and the lid together with the shape regulation line, and provides beauty. The lid portion can be closed, and a substantially flat stabilizing portion can be formed in the central portion of the body portion.

(Solution 4)
Further, it is desirable that the connecting line connecting the lid portion and the body portion has a convex portion protruding toward the lid plate in the central portion thereof.

With such a configuration, the convex portion disperses the strain of the lid plate due to the assembly of the lid portion and promotes the formation of the wavy lid plate, so that the bent shape of the lid portion can be maintained and made robust.

(Solution 5)
Further, it is desirable that the lid portion has a notch formed at an end portion in the width direction connected to the body portion, which is a strain relief means for releasing strain.

With such a configuration, the distortion of the surface of the lid plate due to assembly can be alleviated, and the lid portion can be closed while providing cosmetic properties.

(Solution 6)
Further, it is desirable that the packaging container is formed only by bending and pasting a single plate material.

With such a configuration, it is possible to achieve both the demand for space saving when stocking the packaging container and the stability and ease of handling during transportation required by the automatic packing line.

(Solution 7)
The present invention
It is a plate material of a packaging container made of one plate material, and the plate material has an upper surface plate, a lower surface plate, and a glue margin plate which are continuous in the width direction via a folding line, and the upper surface plate has a lid forming folding line. The outer lid plate is provided at both ends in the longitudinal direction, the lower surface plate has an inner lid plate at both ends in the longitudinal direction via a lid forming fold line, and the outer lid plate and the inner lid plate are peripheral edges thereof. The lid-forming fold line is formed by being surrounded by a lid-forming fold line having the same symmetrical shape opposite to the lid-forming fold line, and the lid-forming fold line is a straight portion having a linear central portion in the width direction and a smooth portion connected to both sides thereof. The outer lid is formed by a curved line having a curved portion, and the outer lid has notches along both ends in the width direction of the lid forming fold line.
The upper surface plate and the lower surface plate each have a pair of shape-regulating fold lines, and each shape-regulating fold line connects a connecting point between a straight portion and a curved portion of the lid forming fold line of each facing lid plate and is outside in the width direction thereof. It is characterized in that it is a plate material formed including a curve that bulges in a convex shape toward.

With such a configuration, it is possible to achieve both the demand for space saving when stocking the packaging container and the stability and ease of handling during transportation required by the automatic packing line.

(Solution 8)
In addition, the present invention
It is a plate material of a packaging container made of one plate material, and the plate material has an upper surface plate, a lower surface plate, and a glue margin plate which are continuous in the width direction via a fold line, and the lower surface plate is via a lid forming fold line. The lid plate is provided at both ends in the longitudinal direction thereof, and the lid plate is formed by being surrounded by a peripheral edge thereof and the lid forming fold line having the same symmetrical shape opposite to the peripheral edge thereof. Is formed by a curve having a straight portion whose central portion in the width direction is straight and a smooth curved portion connected to both sides thereof, and the lid plate is formed along both ends in the width direction of the lid forming fold line. Has a notch,
The upper surface plate and the lower surface plate have a pair of shape-regulating fold lines, and the shape-regulating fold lines of the upper surface plate are at the same positions as the shape-regulating fold lines of the lower surface plate and connect the edges of the facing upper surface plates. The shape-regulating fold line of the lower surface plate connects the straight portion of the lid-forming fold line of each of the opposing lid plates and the connection point of the curved portion. It is characterized in that it is a plate material formed including a curve that bulges outward in the width direction.

With such a configuration, it is possible to assemble a packaging container that can be securely closed with a single lid plate. Therefore, it is possible to achieve both the demand for space saving when stocking the packaging container and the stability and ease of handling during transportation required by the automatic packing line.

(Solution 9)
The plate material
The upper surface plate and the lower surface plate are plate materials having a shape-regulating auxiliary fold line on the outer side in the width direction of each shape-regulating fold line.

With such a configuration, it is possible to assemble a packaging container that can be securely closed with a single lid plate even for bulky stored items. Therefore, it is possible to achieve both the demand for space saving when stocking the packaging container and the stability and ease of handling during transportation required by the automatic packing line.

(Solution 10)
The plate material
The lid forming fold line of the lower surface plate is a plate material having a convex portion protruding outward in the longitudinal direction.

With such a configuration, distortion of the surface of the lid plate due to assembly promotes the formation of a wavy lid plate due to the convex portion, and the bent shape of the lid portion can be easily maintained, and a robust packaging container can be provided.

A packaging container formed by assembling the plate material according to any one of claims 7 to 10.

The packaging container formed by assembly can achieve both the demand for space saving when stocking the packaging container and the stability and ease of handling during transportation required by the automatic packing line.

It is a perspective view of the 1st Embodiment (Example 1) of this invention. It is (a) plan view, (b) front view, (c) side view of the packaging container shown in FIG. It is a development plan view of the packaging container shown in FIG. It is explanatory drawing in the process of assembling the packaging container shown in FIG. It is explanatory drawing in the process of assembling the lid part of the packaging container shown in FIG. It is explanatory drawing of the packing of the packaging container shown in FIG. It is a perspective view seen from the upper surface side of the 2nd Embodiment (Example 2) of this invention. It is a development plan view of the packaging container shown in FIG. 7. It is a perspective view seen from the lower surface side of the modification A (Example 3) of the 2nd Embodiment of this invention. It is a development plan view of the packaging container shown in FIG. It is a perspective view of the modification B (Example 4) of the 2nd Embodiment of this invention. It is a development plan view of the packaging container shown in FIG. It is a perspective view of the conventional example.

Hereinafter, the packaging container and the plate material thereof according to the present invention will be described. For convenience, when the lid plate of the lid of the packaging container is composed of two pieces, the side with the inner lid plate is the "upper surface side", and when there is one lid plate, the side with the lid plate is the "upper surface side". It is written as. Further, the packaging container of the following example is made of paper, and for example, corrugated cardboard having a thickness of 3 mm is suitable from the viewpoint of durability, availability, workability, and the like. It is not limited to paper.
Hereinafter, the first embodiment of the packaging container and the plate material thereof according to the present invention will be described.

The first embodiment of the present invention (Example 1) will be described with reference to FIGS. 1 to 6.
FIG. 1 shows an external perspective view of the packaging container 1 of this example as viewed from the upper surface side. As shown in FIGS. 1 and 2, this example includes a cylindrical body D having a substantially rectangular upper surface and a lower surface connected in the width direction, and a lid portion that closes an opening in the longitudinal direction of the body D. Equipped with F. Two shape-regulating folding lines b11, b11; b12, b12 are provided on the upper surface and the lower surface of the packaging container 1, respectively. These shape-regulating folding lines b11, b11; b12, b12 and the stabilizing portions S1 and S2 surrounded by the edge of the lid portion F improve the stability and ease of handling during packing in the automatic packing line.

FIG. 2 shows (a) a plan view (a view seen from the longitudinal direction), (b) a front view (a view seen from the top surface), and (c) a side view (a view seen from the width direction) of the packaging container 1 of this example. Is shown.
As shown in FIGS. 2A to 2C, the packaging container 1 of this example includes a lid portion F that closes an opening in the longitudinal direction of the body portion D, respectively. The inside of the body portion D closed by the lid portion F forms a cavity having a height defined by the shape of the lid portion F. Stored items are stored in this cavity. The lid portion F is composed of an outer lid plate 11c and an inner lid plate 12c (FIG. 3). In consideration of the thickness of the paper, both ends of the outer lid plate 11c of the lid portion F have notches h1 and are formed so as to release strain when bent.

(Shape regulation polygonal line)
As shown in FIGS. 2 (b) and 2 (c), the packaging container 1 of this example is provided with a pair of two shape-regulating folding lines b11 and b11 on the upper surface of the body D. Similarly, the lower surface of the body portion D is provided with a pair of two shape-regulating folding lines b12 and b12.
Each shape regulation folding line b11; b12 connects the connection points P1a, P1b, P1c, P1d; P2a, P2b, P2c, P2d of the linear portion and the curved portion of the edges bc1; bc2 of the opposite lid portions F. It is formed as a fold line. This polygonal line is formed by a curved line that bulges convexly toward the side end d so that the central portion of the body portion D becomes the apex and is symmetrical with the center line of the body portion D.
The reason why each shape-regulating folding line b11; b12 is formed not as a straight line but as a curved line bulging in a convex shape is that the plate material is thick and is distorted when folded to be released. Especially for paper plates, the plate surface will be distorted if the distortion is not missed when folding the curved polygonal line, and as a result, unintended swelling and wrinkles occur due to the bending, and the bending cannot be maintained. , The beauty is reduced. When the edges bc1 and bc2 of each lid F are composed of curved lines as in this example, the strain generated by this can be dispersed and released by providing a curved folding line on the body D. ..

(Stable part)
The upper surface and the lower surface of the packaging container 1 of this example have stabilizing portions S1 and S2 composed of shape-regulating polygonal lines b11 and b12 and edges bc1 and bc2 of the lid portion F, respectively. The stabilizing portion S1 is an upper surface region surrounded by the two shape-regulating folding lines b11 and b11 and the edge bc1 of the lid portion F, and the stabilizing portion S2 is the edge of the two shape-regulating folding lines b12 and b12 and the lid portion F. It is a region of the lower surface surrounded by bc2.
As shown in FIG. 2C, the stabilizing portion S1 has two sides facing the straight portions of the edges bc1 and bc2 of the lid portion F, so that when the lid portion F is closed, the lid portion F Its height is fixed by the width. On the other hand, the pair of the shape-regulating fold lines b11 and b11 bulges convexly toward the side end d so that the central portion in the longitudinal direction becomes the apex. On the upper surface of the packaging container 1 of this example, the stabilizing portion S1 is a substantially flat flat surface on the upper surface of the body portion D, that is, even if it is a curved surface, there is almost no local unevenness. It is possible to form a gently continuous surface that can be regarded as a flat surface. In this respect, the same applies to the stabilizing portion S2.
Therefore, the stability is improved when the stabilizing portions S1 and S2 configured as described above are transported by an automatic transport line or the like as an installation surface. Further, as described later, when the robot or the like handles it on the automatic transfer line, it becomes easy to handle as a suction surface.

(Plate material)
FIG. 3 shows a plate material a1 for forming the packaging container 1 of this example. The plate material is not limited to paper, but preferably contains paper. This is because it is easy to fold and attach.
This paper plate material a1 has an upper surface plate 11 and a lower surface plate 12 which are continuously provided in the width direction at equal intervals in the folding line b1, and a glue margin plate for bonding to the upper surface plate 11 via the folding line b13. 13 are connected in succession. Then, by attaching the glue margin plate 13 to the edge of the lower surface plate 12, the tubular body portion D can be assembled.
The longitudinal direction of each of the plates 11 and 12 is referred to as "upper or front" toward the top of the paper surface, and may be referred to as "down" or "back" toward the bottom. Then, in the width direction, it may be referred to as left (right) toward the left (right) of the paper.

(Top plate)
The upper surface plate 11 is provided with a lid forming folding line bc1 at each of the front and rear ends, and an outer lid plate 11c is continuously provided via the lid forming folding line bc1. The outer lid plate 11c is bendable at the lid forming folding line bc1. In consideration of the thickness of the paper, both ends of the lid forming folding line bc1 of the outer lid plate 11c have notches h1 and are formed so as to release strain when bent.

(Bottom plate)
The lower surface plate 12 is provided with a lid forming folding line bc2 at the front and rear ends thereof, and an inner lid plate 12c is continuously provided via the lid forming folding line bc2. The inner lid plate 12c is bendable at the lid forming folding line bc2. The inner lid plate peripheral edge c12 of the inner lid plate 12c has a circular notch 12d. This is a handle hole 12d for opening and closing the inner lid plate 12c in particular.

(Assembly procedure)
Hereinafter, a procedure for assembling the packaging container 1 of this example by sticking and bending using the paper plate material a1 having the above-described configuration will be described.
(1) (Folding) First, the upper surface plate 11 and the lower surface plate 12 are bent and overlapped at the folding line b1 of the plate material a1 shown in FIG. In this way, the upper surface plate 11 and the lower surface plate 12 overlap each other to form a flat surface.
(2) (Lasting) Next, glue is applied to the glue margin plate 13, bent along the folding line b13, and the glue margin plate 13 and the bottom plate 12 are bonded together. FIG. 4 shows a state in the middle of assembling in this way. As shown in FIGS. (A) and (b), the upper surface plate 11 and the lower surface plate 12 are in a state of being folded substantially flat with the glue margin plate 13 in between.
(3) (Unfolding) After the bonding is completed, the outer lid plate 11c and the inner lid plate 12c are three-dimensionally unfolded. For example, in the case of an automatic packing line, the upper surface plate 11 and the lower surface plate 12 may be attracted to the robot and then expanded into a cylindrical shape, and then the lid plates 11c and 12c may be bent into a box shape. can.
(4) (Bending of the lid plate) As shown in FIG. 5A, the inner lid plate 12c is bent by bending the lid forming folding line bc1 inward. Subsequently, as shown in FIG. 5B, when the outer lid plate 11c is bent along the lid forming folding line bc1, the outer lid plate 11c is bent on the inner lid plate 12c.
At this time, the outer lid peripheral edge c11 of the outer lid plate 11c and the inner lid peripheral edge c12 of the inner lid plate 12c are composed of straight portions St (P1a to P1b) and curved portions Ct (P1a to Q1, P1b to Q1), and are outer. Since the lid plate 11c and the inner lid plate 12c are constrained to the upper surface plate 11 and the lower surface plate 12, respectively, as shown in FIGS. 2B and 3, the width direction of the outer lid plate 11c and the inner lid plate 12c Since both ends project in the longitudinal direction as compared with the central portion and the central portion is bent so as to be recessed, the outer lid plate 11c and the inner lid plate 12c have a force for restraining the central portion, that is, each lid plate. A force in the direction of closing 11c and 12c works, and the closed state of the lid is maintained.
Further, as described above, in consideration of the thickness of the paper, notches h1 are provided at both ends of the lid forming folding line bc1 of the outer lid plate 11c to alleviate the distortion of the ends caused by being bent and overlapped. doing.
(5) In this way, the body portion D having a hollow inside and the lid portion F that can be opened and closed can be formed, and the packaging container 1 whose both end portions F are closed by the inner lid plate 12c and the outer lid plate 11c can be formed. Can be assembled. The completed packaging container 1 will be as shown in each figure of FIG. Note that FIG. 1 shows an overall perspective view.

(Opening and closing of the lid: storage and removal)
When the article is stored inside the packaging container 1 of this example, the article may be sent into the cavity inside the body D after being expanded into a cylindrical shape in the procedure (3) of the assembly procedure. After that, if the lid portion F is bent and closed, the storage is completed. In particular, the closed state can be maintained without attaching a tape for closing. It should be noted that sticking the tape is not excluded.
Further, in order to take out the article from the storage container 1, it can be easily opened by hooking the outer lid plate 11c with a finger to open it, and then hooking a finger into the handle hole 12d of the inner lid plate 12c and pulling it toward the front.
It should be noted that the upper surface of this example does not have an opening 21 for reading article information, destination information, etc. displayed on the article stored inside as shown in another example described later, but it may be provided. ..

(Example of use in automatic packing line)
FIG. 6 shows an example of using this example in an automatic packing line.
FIG. 6A shows a state in which the packaging container 1 of this example is conveyed on the conveyor T of the automatic packing line. Articles have already been picked and stored as stored items in the packaging container 1, and are being transported one after another from right to left on the paper.
The packaging container 1 of this example is assembled from a single plate material only by gluing and bending, but because it has substantially flat stable surfaces S1 and S2 formed by a pair of shape-regulating folding lines b11. When transported in the horizontal direction on such a conveyor T, the posture and orientation do not collapse and the stability is high. Further, when the packaging container 1 is picked up by vacuum suction and packed in a box, the packaging container 1 is easily sucked, and the same applies to the case where a label is attached to the packaging container 1.
Therefore, the transport container 1 of this example is suitable for handling by a robot arm Ra having a plurality of joints J and J and having a vacuum suction device Va at the tip as shown in FIG. 6A. Is.
FIG. 6B shows an example in which such a robot arm Ra packs the picked packaging container 1 of this example into an outer box Bx suitable for truck transportation or the like. In such a case, the packaging container 1 of this example is provided with substantially flat stable surfaces S1 and S2 formed by folding lines, so that the packaging container 1 can be reliably placed even in the work of stacking in a plurality of stages. can.
In this example, an example of handling by vacuum suction is shown, but it is not limited to this, and even in other cases such as a magic hand, the posture and orientation during transportation do not collapse and stacking is easy. Such points are also merits.

Next, a second embodiment of the present invention (Example 2) will be described with reference to FIGS. 7 to 12. 9 and 10 show the modified example 1 (Example 3), and FIGS. 11 and 12 show the modified example 2 (Example 4).
FIG. 7 shows an external perspective view of the packaging container 2 of this example as viewed from the upper surface side. As shown in FIG. 7, this example includes a cylindrical body portion D in which a substantially rectangular upper surface and a lower surface are connected in the width direction, as in the first embodiment, and each of the openings in the longitudinal direction of the body portion D is provided. A lid portion F for closing is provided. Two shape-regulating folding lines b21, b21; b22, b22 are provided on the upper surface and the lower surface of the packaging container 2, respectively. The stabilizing portions S1 and S2 surrounded by these shape-regulating folding lines b21, b21; b22 and b22 improve the stability and ease of handling during packing in the automatic packing line.
The external perspective view of the packaging container 2 of this example as viewed from the lower surface side is substantially similar to that of FIG. 11 of Example 4 described later, and the lid forming folding line b22c of the lid 212c of FIG. 11 is a gentle convex portion J2. However, it is different in that it is composed of straight portions St (P22a to P22b, P22c to P22d) instead of the above.

(Common points with Example 1)
As shown in FIGS. 7 and 8, the packaging container 2 of this example is provided with a pair of two shape-regulating folding lines b21 and b21 on the upper surface of the body D. Similarly, the lower surface of the body portion D is provided with a pair of two shape-regulating folding lines b22 and b22.
Each shape-regulating fold line b22 on the lower surface is formed as a fold line connecting the connection points P22a, P22b, P22c, and P22d of the linear portion and the curved portion of the edges b2c of the facing lid portions F and F.
On the other hand, each shape-regulating fold line b21 on the upper surface is a fold line connecting the facing upper surface plate peripheral edges c21, and is formed so as to be substantially the same position in the width direction as each shape-regulating fold line b22 on the lower surface plate, and further, the upper surface plate peripheral edge. It has been extended to c21.
These shape-regulating folding lines b21 and b22 are formed by a curved line that bulges so as to be symmetrical with the center line of the body D toward the side end d so that the center of the body D in the longitudinal direction becomes the apex. Has been done.
The reason why each shape-regulating folding line b21; b22 is formed not as a straight line but as a curved line bulging in a convex shape is that, as in the first embodiment, since the plate material is thick, distortion occurs when it is folded and it is released.
The same applies to the stabilizing portions S1 and S2.

(Differences from Example 1)
The difference is that the lid portion F is composed of one lid plate 22c.
For this reason, the upper surface is provided with a notch 21g for receiving and locking the insertion 22d of the lid plate 22c and two insertion holes 21e for locking the lid plate 22c. Further, a handle hole 21d for opening the lid plate 22c and an opening 21f for reading internal information are provided.
The advantage of having one lid F is that the assembly of the lid F is completed by one bending in the assembly. Further, when the thickness of the plate material is taken into consideration, the strain generated by bending gathers in the vicinity of both ends in the width direction of the lid portion F, so that improvement in cosmeticity can be expected.

As shown in FIGS. 7 and 8, the stabilizing portion S1 has two edges c21 at both ends in the longitudinal direction, and these two sides are not edges of the lid portion F unlike the first embodiment. However, when the lid plate 22c is folded to close the opening of the body D, the top plate 21 is supported by the lid plate 22c and its height is fixed at a fixed position (width of the lid F). .. On the other hand, since the pair of the shape-restricted fold lines b21, b21; b22, b22 bulges convexly toward the side end d so that the central portion in the longitudinal direction becomes the apex, as in the first embodiment, the shape-restricted fold line b21, b21; Due to the presence of b21; b22, strain can be dispersed and released, and on the upper surface of the packaging container 2 of this example, the stabilizing portion S1 is a substantially flat flat surface on the upper surface of the body portion D, that is, strictly a curved surface. Even if there is, it is possible to form a gently continuous surface that can be regarded as a substantially flat surface without local unevenness. Further, the stabilizing portion S2 is the same as in the first embodiment.
Therefore, as in the first embodiment, the stability is improved when the stabilizing portions S1 and S2 are transported by an automatic transport line or the like as an installation surface. In addition, when a robot or the like handles it on an automatic transfer line, it is similarly easy to handle as a suction surface.

(Opening)
An opening 21f is opened on the upper surface of the packaging container 2 of this example. This makes it possible to read the article information and the destination information displayed on the articles stored inside even after packaging.

(Plate material)
FIG. 8 shows a paper plate material a2 for forming the packaging container 2 of this example. The plate material is not limited to paper, as in Examples 1 and 2.
The difference between the paper plate material a2 and the paper plate material a1 of Example 1 is that only the lower surface plate 22 has a lid plate 22c, the upper surface plate 21 does not have a lid plate, and the lid plate 22c of the lower surface plate is locked. The top plate 21 is provided with an insertion hole 21e and a handle hole 21d. In addition, the top plate 21 has an opening 21f for reading information displayed on the article.
That is, the paper plate material a2 has an upper surface plate 21 and a lower surface plate 22 which are continuously provided in the width direction at equal intervals in the folding line b2, and the upper surface plate has a glue margin for bonding via the folding line b23. Plates 23 are connected in series. Then, by attaching the glue margin plate 23 to the edge of the lower surface plate 22, the tubular body portion D can be assembled.
The notation for the longitudinal direction and the width direction of each plate is the same as that in the first embodiment.

The upper surface plate 21 has a notch 21g for receiving and locking the insertion 22d of the lid plate 22c, a handle hole 21d for opening the lid plate 22c, and a lid plate of the lid plate 22c at both end edges c21 and c21 in the longitudinal direction. It has two insertion holes 21e for locking the peripheral edge c22.
In addition, the opening 21f is opened. This makes it possible to read the article information and the destination information displayed on the articles stored inside even after packaging.

The bottom plate 22 has a lid plate 22c connected to the front and rear ends thereof via a lid forming folding line b2c. The lid plate 22c is bendable at the lid forming folding line b2c. Considering the thickness of the paper, both ends of the lid forming folding line b2c of the lid plate 22c have notches h2, respectively, so that the strain when folded is released, and the strain appears on the surface and impairs the beauty. That is being reduced.
Further, the lid plate 22c has a tongue-shaped insertion 22d at the peripheral edge c22 of the lid plate. The insertion 22d is inserted into the notch 21g of the upper surface plate 21 when the opening of the body portion D is closed by the lid plate 22c.

(Assembly procedure)
Hereinafter, a procedure for assembling the packaging container 2 of this example by gluing and bending using the paper plate material a2 having the above-described configuration will be described.
(1) (Folding) and (2) Laminating are the same as in Example 1.
(3) (Development) After the bonding is completed, the lid plate 22c is three-dimensionally developed. Only one sheet may be deployed.
(4) (Bending of the lid) The lid plate 22c is bent by bending the lid forming folding line b2c inward.
The point that the closed state of the lid is maintained is the same as that of the first embodiment, although it is a single lid plate.
At this time, the lid forming folding line b2c of the lid plate 22c is composed of straight portions St (P22a to P22b) and curved portions Ct (P22a to Q2, P22b to Q2), and the lid plate 22c is restrained by the lower surface plate 22. Therefore, both ends in the width direction of the lid plate 22c project in the longitudinal direction as compared with the central portion thereof, and the central portion thereof is bent so as to be recessed. In addition, the peripheral edge c22 of the lid plate is fitted into the insertion hole 21e of the top plate 21 and locked.
In this way, the body portion D having a hollow inside and the lid portion F that can be opened and closed can be formed, and the packaging container 2 in which both end portions F are closed by the lid plate 22c can be assembled. The completed packaging container 2 is shown in FIG. 7 as an overall perspective view as viewed from the upper surface side.

(Opening and closing of the lid: storage and removal)
When the article is stored inside the packaging container 2 of this example, it is the same as that of the first embodiment.
Further, in order to take out the article from the packaging container 2, it can be easily opened by inserting a finger into the handle hole 21d of the top plate 21 and pulling out the insertion 22d toward the front.

Next, a modified example A (Example 3) of the second embodiment of the present invention will be described with reference to FIGS. 9 to 10.
FIG. 9 shows an external perspective view of the packaging container 2A of this example as viewed from below. The external perspective view seen from the upper surface side is the same as FIG. 7 showing the second embodiment except that the pair of the shape regulation auxiliary folding lines bm2 and bm2 is added.
As shown in FIG. 9, the packaging container 2A of this example includes a cylindrical body portion D in which a rectangular upper surface and a lower surface are connected in the width direction, and a lid that closes an opening in the longitudinal direction of the body portion D. A part F is provided. The upper surface and the lower surface of the packaging container 2A are provided with a pair of two shape-regulating folding lines b211 and b212 and two shape-regulating auxiliary folding lines bm1 and bm2, respectively. The stabilizing portions S1 and S2 surrounded by the shape-regulating polygonal lines b211 and b211; b212 and b212 mainly improve the stability and ease of handling during packing in the automatic packing line.
As will be described in more detail later, the difference from the second embodiment is that the shape regulation auxiliary folding lines bm1 and bm2 are added, and the lid forming folding line b2c of the lid 22c of the second embodiment is a straight portion without a convex portion. Although it is configured, instead of this, the lid forming polygonal line b21c of the lid 212c of this example is configured to have a convex portion J1.

(Common points with Example 2: Lid F)
The point that the lid portion F is composed of one lid plate 212c is the same as that of the second embodiment.
Therefore, insertion holes (locking means) 211e for locking the lid plate 212c are provided at two places on the upper surface plate 211. Further, a handle hole 211d for opening the lid portion F and a notch 211g for receiving the lid plate 212c are provided (reference figure: FIG. 7).

(Common points with Example 2: Shape-regulated polygonal lines b211 and b212)
The packaging container 2A of this example includes two pairs of shape-regulating folding lines b211 and b211 on the upper surface of the body D, and two pairs of shape-regulating auxiliary folding lines bm1 and bm1 on the outer side in the width direction thereof. Similarly, two pairs of shape-regulating folding lines b212 and b212 are provided on the lower surface of the body portion D, and two pairs of shape-regulating auxiliary folding lines bm2 and bm2 are further provided on the outer side in the width direction. Each shape regulation auxiliary folding line bm1 and bm2 will be described later.
The shape-regulated polygonal lines b211 and b212 are the same as in the second embodiment. That is,
Each shape-regulating folding line b212 on the lower surface is formed as a folding line connecting the connection points P221a, P221b, P221c, and P221d of the linear and curved portions of the opposite lid portions F, F edges b21c, b21c. ..
On the other hand, each shape regulation folding line b211 on the upper surface is a folding line connecting the facing upper surface plate peripheral edges c211 and is formed so as to be substantially the same position in the width direction as each shape regulation folding line b212 on the lower surface plate, and further, the upper surface plate peripheral edge. It has been extended to c211.
These shape-regulating folding lines b211 and b212 are formed by a curved line that bulges symmetrically toward the side end d so that the central portion in the longitudinal direction of the body portion D becomes the apex and is symmetrical to the center line of the body portion D. Has been done.
The reason why each shape-regulating polygonal line b211; b212 is formed by a curved line bulging in a convex shape instead of a straight line is the same as in Examples 1 and 2. The shape regulation auxiliary folding line will be described later in terms of differences.
(Stable part)
The upper surface plate 211 and the lower surface plate 212 have stable portions S1 and S2, respectively, due to the edges of the shape-regulating folding lines b211 and b211; b212 and b212 and the lid portion F, respectively. The stabilizing portion S1 is a region of the upper surface surrounded by the two shape-regulating folding lines b211 and b211 and the edges of both ends in the longitudinal direction of the body portion D, and the stabilizing portion S2 is the two shape-regulating folding lines b212 and b212 and the body portion. It is a region of the lower surface surrounded by the edges of both ends in the longitudinal direction of D.
The stabilizing portion S1 on the upper surface is fixed at a constant height (height of the lid portion F) as in the second embodiment. Since the shape-regulating folding line b211 bulges convexly toward the edge in the width direction so that the central portion in the longitudinal direction becomes the apex as in the first and second embodiments, the stabilizing portion S1 is substantially formed on the upper surface of the body portion D. It forms a flat plane, that is, a gently continuous surface without local irregularities, even if it is strictly a curved surface. The same applies to the stabilizing portion S2 on the lower surface.
Stability is improved when the stabilizing portions S1 and S2 are transported by an automatic transport line or the like as an installation surface. Further, as will be described later, when a robot or the like handles it on an automatic transfer line, it is also easy to handle as a suction surface.

(Differences from Example 2)
The first difference is that the upper surface has two pairs of shape-regulating fold lines bm1 and bm1, and the lower surface has two pairs of shape-regulating fold lines bm2 and bm2. The second point is that the lid plate 212c has a convex portion J1 protruding toward the lid plate at the center of the lid forming folding line b21c.
(Shape regulation folding line bm1, bm2)
The shape-regulating auxiliary folding lines bm1 and bm2 at the first point are formed by folding lines connecting the longitudinal edges c211 of the facing lids F and F. Similar to the shape-regulating polygonal lines b211 and b212, they bulge convexly toward the side end d in the width direction so that the central portion in the longitudinal direction becomes the apex, and each pair is symmetrical with respect to the center line in the longitudinal direction. It is formed like this.

(Differences from Example 2: Convex J1)
As a second point, the lid forming folding line b21c of the lid plate 212c has a convex portion J1 protruding toward the lid side. Since there is such a convex portion J1, in the packaging container 2A of this example, the lid surface F protrudes outward at the portion of the convex portion J1, and the entire lid surface has a wavy shape with the portion of J1 as the apex. Is formed in. As a result, the lid plate F is less likely to fall to the outside of the packaging container 2A of this example, and the edge c212 of the lid plate is also corrugated when viewed from the upper surface, and the portion that fits into the insertion hole 211e is pushed further inward. Therefore, it becomes easy to fit.
By providing such a convex portion J1, it is possible to more reliably close the lid portion F. The shape of the convex portion to be provided can be determined according to the thickness of the paper, the shape of the lid portion, and the like.

(Opening)
Further, an opening 211f is opened on the upper surface of the packaging container 2A of this example. This makes it possible to read the article information and the destination information displayed on the articles stored inside even after packaging.

(Plate material)
FIG. 10 shows a paper plate material a21 for forming the packaging container 2A of this example. The plate material is not limited to paper, as in Examples 1 and 2.
Similar to the plate material a2 of the second embodiment, the plate material a21 has a lid plate 212c only on the lower surface plate 212, and the upper surface plate 211 does not have a lid plate. Therefore, the upper surface plate 211 has a notch 211g and an insertion hole 211e for locking the insertion 212d of the lid plate 212c, and a handle hole 211d is provided at the center of the notch 211g. In addition, the top plate 211 has an opening 211f for reading information displayed on the article.
That is, the paper plate material a21 has the lower surface plate 212 and the upper surface plate 211 which are continuously provided in the width direction at equal intervals in the folding line b2a, and is attached to the edge of the upper surface plate 211 via the folding line b213. A glue margin plate 213 for this purpose is continuously provided. Then, by attaching the glue margin plate 213 to the edge of the lower surface plate 212 located at the other end in the width direction, the tubular body D can be assembled.
In addition, in the longitudinal direction of each board, it is called up, front, or heaven, and it may be down, back, or bottom in the width direction, and it goes to the left (right) of the paper in the width direction. The fact that it is left (right) is the same as in other examples.

Similar to the second embodiment, the bottom plate 212 is provided with lid plates 212c connected to both ends in the longitudinal direction via the lid forming folding lines b21c. The lid plate 212c is bendable at the lid forming folding line b21c. Similarly, the lid plate 212c has a tongue-shaped insertion 212d at the peripheral edge c212 of the lid plate.

Similar to the second embodiment, the top plate 211 is also provided with a handle hole 211d, an insertion hole 211e, an opening 211f, a notch 211g, and a notch h21.

(Assembly procedure)
The procedure for assembling the packaging container 2A of this example using the plate material a21 is the same as the procedure for assembling the packaging container 2 of the second embodiment, and is therefore omitted. The completed packaging container 2A is as shown in FIG. 9 of the overall perspective view from the lower side. The overall perspective view from the upper side is the same as the overall perspective view of FIG. 7 of the second embodiment except for the shape regulation auxiliary folding line bm2, and is therefore omitted.

(Opening and closing of the lid: storage and removal)
The same applies to the case where the article is stored inside the packaging container 2A of this example.

Next, a modified example B (Example 4) of the second embodiment of the present invention will be described with reference to FIGS. 11 to 12.
FIG. 11 shows an external perspective view of the packaging container 2B of this example as viewed from below. The external perspective view seen from the upper surface is the same as that of the second embodiment.
As shown in FIG. 11, the packaging container 2B of this example includes a cylindrical body portion D in which a rectangular upper surface and a lower surface are connected in the width direction, and a lid that closes an opening in the longitudinal direction of the body portion D. A part F is provided. The upper surface and the lower surface of the packaging container 2B of this example are provided with two pairs of shape-regulating folding lines b221 and b222, respectively. The stabilizing portions S1 and S2 surrounded by these shape-regulating folding lines b221 and b222 improve the stability and ease of handling during packing in the automatic packing line.
As will be described in more detail later, the difference from Example 2 is that the folding line b2c of the lid 22c of Example 2 is composed of a straight portion, but instead of this, the lid forming folding line of the lid 222c of this example is formed. b22c is configured to have a convex portion J2.

(Common points with Example 2: Lid F)
The point that the lid portion F is composed of one lid plate 222c is the same as in the second and third embodiments.
Therefore, two insertion holes (locking means) 221e for locking the lid plate 222c are provided on the upper surface plate 211. Further, a handle hole 221d for opening the lid portion F and a notch 221g for receiving the lid plate 222c are provided (reference figure: FIG. 7).

(Common points with Example 2: Shape-regulated polygonal lines b221 and b222)
The packaging container 2B of this example is provided with a pair of two shape-regulating folding lines b221 and b221 on the upper surface of the body portion D, similarly to the packaging container 2 of the second embodiment. Similarly, the lower surface of the body portion D is provided with a pair of two shape-regulating folding lines b222 and b222.
The shapes, configurations, and functions of the shape-regulating folding lines b221 and b222 are the same as those of the packaging container 2 of the second embodiment.
The packaging container 2 of Example 2 is also characterized in that the upper surface plate 221 and the lower surface plate 222 have stable portions S1 and S2, respectively, due to the shape-regulating folding lines b221, b221; b222, b222 and the edge c221 of the lid portion F or the lid forming folding line b22c, respectively. Is similar to.

(Differences in the lid from Example 3)
The point that the lid plate 222c has a convex portion J2 protruding toward the lid plate at the center of the lid forming folding line b22c is the same as that of the third embodiment, but the shape is gentle, which is different from the third embodiment. In this example, there is no pair of shape regulation auxiliary folding lines bm2 and bm2.

As shown in FIG. 11, the stabilizing portion S2 has two sides of the edges b22c and b22c of the lid portion F. The function of the stabilizing portion S2 is the same as that in the second embodiment.
Further, the stabilizing portion S1 on the upper surface is fixed at the height of the lid portion F as in the second embodiment. The function of the stabilizing portion S1 is the same as that in the second embodiment.

(Convex part J2)
The edge of the lid portion F (folded line of the lid plate 222c) b22c has a gentle convex portion J2 protruding toward the lid side. Since there is such a gentle convex portion J2, in the packaging container 2B of this example, the lid surface F protrudes outward at the location of the gentle convex portion J2, and the lid is covered, similarly to the packaging container 2A of the third embodiment. The entire surface is formed so as to have a wavy shape with the apex of the convex portion J2 as the apex. As a result, the lid plate F is less likely to fall to the outside of the packaging container 2B, and the edge c222 of the lid plate is also corrugated when viewed from the upper surface, and the portion that fits into the insertion hole 221e is pushed inward, so that the lid plate F is fitted. It will be easier. By providing such a convex portion J2, it is possible to more reliably lock the lid portion.
The shape of the convex portion to be provided can be determined according to the thickness of the paper, the shape of the lid portion, and the like. The shape of the convex portion to be provided can be determined according to the thickness of the paper, the shape of the lid portion, and the like. By providing such a convex portion J2, it is possible to more reliably lock the lid portion.

(Opening)
Further, an opening 221f is opened on the upper surface of the packaging container 2B of this example in the same manner as in Examples 2 and 2A. This significance is similar.

(Plate material)
FIG. 12 shows a paper plate material a22 for forming the packaging container 2B of this example. The plate material is not limited to paper, as in Examples 1, 2 and 2A.
The plate material a22 is basically the same as the plate material a2 of the second embodiment. The difference is that the folding line b22c has a gentle convex portion J2 protruding toward the lid plate side. The shape of the convex portion can be determined in consideration of the properties of the plate material, the ease of closing the lid portion F, and the cosmeticity.

(Assembly procedure)
The procedure for assembling the packaging container 2B of this example using the plate material a22 is the same as the procedure for assembling the packaging container 2 of Example 2 and the packaging container 2A of Example 3, and is therefore omitted. The completed packaging container 2B is as shown in the overall perspective view from the lower side of FIG. The overall perspective view from above is the same as the overall perspective view of FIG. 7 of the second embodiment, and is therefore omitted.

(Opening and closing of the lid: storage and removal)
The same applies to the case where the article is stored inside the packaging container 2A of this example.

Although an example of the embodiment of the present invention has been described above with reference to the drawings, the packaging container according to the present invention is not limited to the illustrated example, and various designs are provided within the scope of the technical idea described in the claims. It goes without saying that it can be changed.

In the present invention, for example, the shape-regulating polygonal lines b11; b12 of the first embodiment are the connection points P1a and P1b of the linear straight portion and the curved curved portion of the edges bc1; bc2 of the opposite lid portions F. P1c, P1d; P2a, P2b, P2c, P2d are connected.
This curved portion does not have to be simply an arc portion forming a part of the circumference, and may be a smooth curve that bends monotonically.
Further, this connection point can be determined as follows with respect to the plate width, that is, the lengths of the upper surface plate 11 and the lower surface plate 12 in the plate material in the width direction.
If the ratio RT between the plate width and the straight part, that is, (length of the straight part) / (plate width) = RT,
It is desirable that RT is 0.3 ≦ RT ≦ 0.6. From this, if RT is small, the size of the stable portion becomes small, so that the stability is lowered. Further, if the RT is larger than this, the distortion increases and the cosmeticity is impaired. More preferably, RT is 0.4 ≦ <RT ≦ 0.5. This range has a particularly good balance between cosmetics and stability.
These points are the same not only in Example 1 but also in other Examples 2, 3 and 4.

1, 2, 2A, 2B: Packaging container F: Lid part D: Body part d: Side end S1: Stabilization part, area surrounded by shape-regulated polygonal line and connection line between body part and lid part S2: Stabilization part , Area surrounded by the shape regulation folding line and the connecting line between the body and the lid St: Straight part Ct: Curved part J: Joint Ra: Robot arm Va: Suction device T: Conveyor device, Belt conveyor Bx: Outer box <Example 1>
a1: Plate material (plate material for packaging containers)
b2, b13: Folded line b11: Shape-regulated fold line of top plate 11 b12: Shape-regulated fold line of bottom plate 12 bc1, bc2: Cover-forming fold line, edge of lid F, connection line between lid and body c11: Outer lid plate Peripheral c12: Inner lid plate peripheral h1: Notch P1a, P1b, P1c, P1d: Intersection of lid forming fold line bc1 and fold line b11, b11 P2a, P2b, P2c, P2d: Intersection of lid forming fold line bc2 and fold line b12, b12 Q1: End of outer lid plate 11c in the plate width direction 11: Top plate, 11a: Center of top plate, 11b: End of top plate side, 11c: Outer lid plate 12: Bottom plate, 11a: Center of bottom plate, 11b: Bottom plate side end, 12c: Inner lid plate, 12d: Handle hole 13: Glue allowance plate <Example 2>
a2: Plate material (plate material for packaging containers)
b2, b23: Folded line b21: Shape-regulated fold line of top plate 21 b2c: Cover-forming fold line b22: Shape-regulated fold line of bottom plate 22 c21: Top plate peripheral edge c22: Cover plate peripheral edge, lid F edge, lid F and body Connection part h2: Notch and strain relief means P21a, P21b, P21c, P21d: Intersection of peripheral edge c21 and folding line b21 P22a, P22b, P22c, P22d: Folded line b22 intersection of folding line b2c Q2: In the plate width direction of the lid plate 22c End 21: Top plate, 21a: Center of top plate, 21b: Top plate side end, 21d: Hand hole, 21e: Insert hole (locking means), 21f: Opening, 21g: Notch,
22: Bottom plate, 22a: Center of bottom plate, 22b: Side end of bottom plate, 22c: Cover plate, 22d: Insertion 23: Glue allowance plate <Example 3> (2A) 2 lines, convex a21: Plate material ( Plate material for packaging containers)
b2a, b213: Folded line b211: Shape-regulated fold line of top plate 21 b21c: Cover-forming fold line, edge of lid F, connection between lid F and body b212: Shape-regulated fold line of bottom plate 22 bm1: Top plate 21 Shape regulation auxiliary fold line bm2: Shape regulation auxiliary fold line of bottom plate 22 c211: Edge of top plate, longitudinal edge of lid F c212: Edge of lid plate, edge of lid (F) h21: Notches P211a, P211b, P211c, P211d: Intersection of top plate peripheral edge c211 and shape-regulating fold line b211 P212a, P212b, P212c, P212d: Intersection of lid-forming fold line b21c and shape-regulation fold line b212 Q21: End of lid plate 212c in plate width direction J1: Convex portion 211: Top plate, 211a: Center of top plate, 211b: End of top plate side, 211d: Hand hole, 211e: Insert hole (locking means), 211f: Opening, 211g: Notch 212: Bottom plate, 212a: Center of bottom plate Part, 212b: Bottom plate side end, 212c: Cover plate, 212d: Insert 213: Glue allowance plate <Example 4> (2B) 1 line, gently convex a22: Plate material (plate material for packaging container)
b2b, b223: Folded line b221: Top plate 221 shape regulation fold line b22c: Cover forming fold line b222: Bottom plate 222 shape regulation fold line c221: Top plate peripheral edge c222, lid plate peripheral edge, lid F edge, lid F and body Connection part h22: Notch P221a, P221b, P221c, P221d: Intersection of peripheral edge c221 and folding line b221 P222a, P222b, P222c, P222d: Intersection of folding line b22c and b222 Q22: End of lid plate 222c in plate width direction Convex part 221: Top plate 221a: Top plate center part 221b: Top plate side end part 221d: Hand hole 221e: Insert hole (locking means) 221f: Opening 221g: Notch 222: Bottom plate 222a : Bottom plate center part 222b: Bottom plate side end part 222c: Cover plate 222d: Insertion 223: Glue allowance plate (conventional example)
1': Packaging container F': Lid part D': Body part d': Side end

Claims (11)

A packaging container including a tubular body and a lid that opens and closes the openings at both ends of the body in the longitudinal direction.
The body portion (D) is formed by connecting the side ends (d) of the upper surface plate (11) and the lower surface plate (12).
The top plate (11; 21; 211; 221) and the bottom plate (12; 22; 212; 222) are
A pair of shape restrictions that extend symmetrically with respect to the longitudinal direction and connect the facing connecting lines connecting the lid portion (F) and the body portion (D), and bulge convexly toward the side end (d) at the central portion in the longitudinal direction. It has broken lines (b11, b12; b21, b22; b211 and b212; b221, b222), respectively.
As a result, the packaging container (1, 2, 2A, 2B) forms a substantially flat stabilizing portion (S1, S2) at the central portion in each width direction. The packaging container according to claim 1.
The lid portion (F) is composed of one lid plate (22c, 212c, 222c).
The body portion (D) has shape-regulating folding lines (b21, b22; b211 and b212; A packaging container (2, 2A, 2B) provided between b221, b222) and the side end (d). The packaging container according to claim 1.
The body portion (D) is a packaging container (2A) having shape-regulating auxiliary folding lines (bm1, bm2) between each shape-regulating folding line (b211 and b212) and a side end (d). The packaging container according to claim 2 or 3.
The connecting lines (b2c, b21c, b22c) connecting the lid portion (F) and the body portion (D) are packaging containers (2A, 2B) having convex portions (J1, J2) protruding toward the lid plate at the center thereof. ). The packaging container according to any one of claims 1 to 4.
The lid portion (F) is a packaging container (1, 2, 2A, 2B). The packaging container (1, 2, 2A, 2B) according to any one of claims 1 to 5, which is assembled only by bending and pasting one plate material (a1, a2, a21, a22). It is a plate material (a1) of a packaging container made of one plate material, and the plate material (a1) is
It has an upper surface plate (11), a lower surface plate (12) and a glue allowance plate (13) that are continuous in the width direction via the folding lines (b1, b13).
The upper surface plate (11) has an outer lid plate (11c) at both ends in the longitudinal direction via a lid forming folding line (bc1).
The lower surface plate (12) has an inner lid plate (12c) at both ends in the longitudinal direction via a lid forming folding line (bc2).
The outer lid plate (11c) and the inner lid plate (12c) are surrounded by a peripheral edge (c11, c12) and a lid forming folding line (bc1, bc2) having the same symmetrical shape opposite to the peripheral edge plate (c11, c12). Formed,
The lid forming polygonal line (bc1, bc2) is formed by a curve having a straight portion St whose widthwise central portion is linear and a smooth curved curved portion (Ct) connected to both sides thereof.
The outer lid (11c) has cuts (h1, h1) along both ends in the width direction of the lid forming folding line (bc1).
The upper surface plate (11) and the lower surface plate (12) each have a pair of shape-regulating polygonal lines (b11; b12).
Each shape regulation folding line (b11; b12) is a connection point (St) and a curved portion (Ct) of the lid forming folding lines (bc1; bc2) of the facing lid plates (11c, 11c; 12c, 12c). A plate material (a) formed by connecting P1a, P1b, P1c, P1d; P2a, P2b, P2c, P2d) and including a curve bulging outward in the width direction. It is a plate material (a2, a21, a22) of a packaging container made of one plate material, and the plate material is
It has a top plate (21; 211; 221), a bottom plate (22; 212; 222) and a glue margin plate (23; 213; 223) that are continuous in the width direction via a folding line (b2, b23;).
The lower surface plate (22; 212; 222) has a lid plate (22c; 212c; 222c) at both ends in the longitudinal direction via a lid forming folding line (b2c; b21c; b22c).
The lid plate is formed by being surrounded by its peripheral edge (c22; c212; c222) and the lid forming polygonal line having the same symmetrical shape facing the peripheral edge (c22; c212; c222).
The lid forming polygonal line is formed by a curve having a straight portion (St) whose central portion in the width direction is linear and a smooth curved curved portion (Ct) connected to both sides thereof.
The lid plate has cuts (h2, h21, h22) along both ends in the width direction of the lid forming polygonal line.
The top plate and the bottom plate each have a pair of shape-regulating polygonal lines (b21, b22; b211 and b212; b221, b222).
The shape-regulating fold line (b21; b211; b221) of the top plate is at the same position as the shape-regulating fold line (b22; b212; b222) of the bottom plate, and the edges (c21, c21: c211) of the facing top plates are opposed to each other. , C211; c221, c221) and formed including a curve bulging outward in the width direction.
The shape-regulating folding lines (b22; b212; b222) of the lower surface plate are straight portions (St) and curved portions (Ct) of the lid forming folding lines (b2c; b21c; b22c) of the opposing lid plates (22c; 212c; 222c). ) Connection points (P21a, P21b, P21c, P21d, P22a, P22b, P22c, P22d; P211a, P211b, P211c, P211d, P212a, P212b, P212c, P212d; P221a, P221b, P221c, P221d, P222a, P222a. , P222d), and a plate material (a2, a21, a22) formed including a curve bulging outward in the width direction. The plate material (a21) according to claim 8.
The upper surface plate (211) and the lower surface plate (212) are plate materials (a21) further having shape-regulating auxiliary folding lines (bm1, bm2) on the outer side in the width direction of each shape-regulating folding line. The plate material according to any one of claims 7 to 9.
The lid forming folding line (b21c) of the lower surface plate (212) is a plate material (a21, a22) having convex portions (J1; J2) protruding outward in the longitudinal direction. A packaging container formed by assembling the plate materials (a1, a2, a21, a22) according to any one of claims 7 to 10.

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