JP5157735B2 - Packaging container - Google Patents

Description

  The present invention relates to a foldable packaging container provided with a shape-retaining member that retains the shape of a container body made of a soft material such as a film, and more particularly to a packaging container that satisfies both requirements for volume reduction and handling properties.

  Conventionally, a pouch having a film configuration is more flexible than rigid containers such as bottles and cups, and thus has been widely used because it has the advantage of being able to be folded into a small size and reducing the volume of waste during disposal.

However, such a pouch may have poor handling when used.
For example, when pouring the content liquid, the pouch may bend and overflow, and when drinking a drink in the pouch, if the content is of low viscosity, the content liquid will pop out by grasping the pouch too much. Sometimes it ends up. Furthermore, in applications where water and powder are placed in a container and shaken during use, it is difficult to pour water and shake.

  On the other hand, in order to improve the handling property of such a pouch, for example, Patent Document 1 describes a liquid storage bag in which a rigid and deformable cylindrical member is inserted into a container body.

  However, although this patent document 1 describes that the tubular member can be bent and deformed, it is not flatly folded and volume reduction is insufficient. Further, there is a possibility that the bending deformed portion is bent when gripped, and it is still inconvenient.

Further, Patent Documents 2 and 3 disclose a pouch container in which a foldable cylindrical reinforcing member is inserted in order to make the nozzle three-dimensional, but these are limited to the nozzle. However, it is not the entire configuration of the pouch. Even if it is applied to the entire pouch, the strength is too weak to hold the three-dimensional state, and it cannot be gripped.
JP-A-11-165747 JP 11-79195 A JP-A-11-152154

  The objective of this invention is providing the packaging container which can improve the handleability at the time of use, maintaining the advantage of volume reduction of the container of film structures, such as a pouch.

In order to achieve the above object, in the invention according to claim 1, a container main body made of a flexible soft material, and a shape holding member inserted into the container main body to hold the container main body from the inside, The shape holding member has a pair of input operation parts located at the side edges of the container body and a pair of container surface holding parts located between the side edges of the container body, The operation in the direction of narrowing the interval between the operation parts can be converted into the operation in the direction of opening the film part by the container surface holding part, and the shape holding member can be freely engaged and disengaged between the pair of container surface holding parts. The container main body is held in a three-dimensional shape by engaging the lock strut between the container surface holding portions operated in the direction to open the film portion, and the lock struts are held between the container surface holding portions. Separating and narrowing the space between container surface holding parts The container main body is configured to be folded.

  According to the present invention, when the space between the container surface holding portions of the shape holding member is widened to form a three-dimensional shape, the locking struts are engaged to hold the container surface holding portions. The container body has high rigidity due to the lock support column, and can be used by being held in the hand like a rigid container such as a cup, thereby realizing a packaging container having excellent handling properties. Further, at the time of transportation and storage before filling the contents, and at the time of disposal after use, it is possible to fold and reduce the volume by removing the lock support.

  In the invention according to claim 2, the shape holding member is a rhombus-shaped cylindrical body having four corners that can be bent, and a corner located on one diagonal line is located on a side edge of the container body. It is a pair of input operation parts, and the corner part located on the other diagonal line is located in the middle part of the container surface holding part on the front and back sides, holding the shape by holding both side edges of the container body and applying force The distance between the corners on one diagonal line, which is the input operation part of the member, is narrowed, the interval between the corners of the container surface holding part located on the other diagonal line is expanded, and the container body is pushed outward, and the container body Is configured to be three-dimensional.

  If it does in this way, it can be easily made into a solid shape and a folding shape only by making a shape maintenance member into a simple cylinder shape.

  In the invention according to claim 3, the lock support column is fixed to one container surface holding part side so as to be able to be tilted up and down and is raised when it is deformed in a direction to narrow the interval of the input operation part of the shape holding member. When the distal end engages with the other container surface holding part and is deformed in a direction in which the interval between the input operation parts is widened, it is configured such that it can be folded down and folded into one container surface holding part side.

  If it does in this way, a user will become three-dimensional by only grasping the both-sides edge part of a container main body, and it will become possible to lock with a lock | pillar for a lock | rock.

In the invention according to claim 4, the locking support column is configured to bend in the vertical direction in the direction opposite to the bending direction of the corner portion of the one container surface holding portion, and is formed by the bent portion ridge line of the locking support column. Each of the divided locking strut pieces is connected to both sides of the corner ridge line of the container surface holding portion via a connecting bending portion, and the connecting bending portion is bent in the opposite direction to the longitudinal bending portion of the locking column. It has become.
In this way, it is possible to realize a lock column that automatically stands up with a simple configuration.
In addition, as described in claim 5, if the engaging claw that engages with the engaging hole provided in the other container surface holding portion is provided at the tip of the locking column, the locking column falls down. Can be prevented.

In the invention according to claim 6, when the other container surface holding portion is deformed in the direction of narrowing the interval between the input operation portions of the shape holding member, the lock surface rises from the one container surface holding portion. An auxiliary column that rises so as to cross the column is provided, and a guide unit that engages the tip of the auxiliary column is provided on the locking column.
If it does in this way, the side shake of the support | pillar for a lock | rock can be controlled with an auxiliary support | pillar.

  If the container main body has a self-supporting structure as in the invention described in claim 7, it can be used as an alternative to can containers, bottles, and simple cups.

According to the present invention, when the space between the container surface holding portions is widened to form a three-dimensional shape, the movement in the direction of narrowing the space between the container surface holding portions is restricted by the lock struts, so that the three-dimensional shape of the trunk portion is reduced. Maintained. Therefore, it has high rigidity, can be used by hand like a rigid container such as a cup, and a packaging container excellent in handling property can be realized. In addition, during transportation and storage before filling the contents, the lock support column can be folded down so that the volume can be reduced.

  Hereinafter, the present invention will be described in detail based on illustrated embodiments.

  FIG. 1 shows a schematic configuration of a packaging container according to an embodiment of the present invention. FIG. 1 (A) is a schematic perspective view showing a part of the gripped state, and FIG. 1 (B) is a plan view. 2 shows the shape-retaining member of FIG. 1. FIG. 2A is a front view, FIG. 2B is a rear view, and FIG. 2C is a schematic side cross-sectional view of the opened state. D) is a top view in the opened state, FIG. 3E is a side view in the closed state, FIG. 3A is a development view of the shape holding member in FIG. 1, and FIG. 4A is a schematic perspective view for explaining the standing operation of the lock support column, FIG. 4A is a schematic exploded perspective view of the container main body and the shape holding member separated, and FIG. 4B is a schematic perspective view of the assembled state. FIG.

  As shown in FIG. 1, the packaging container 1 includes a container body 2 having a pair of front and rear film portions 21 and 22, and the film portions 21 and 22 of the container body 2 that are inserted into the container body 2 from the inside. The shape holding member 3 is provided.

  In this embodiment, the container body 2 is a so-called standing pouch having a self-supporting structure, and a pair of front and back front film parts 21 and a rear film part 22 constitute a flat body part 20. The left and right side edges of the front and rear film portions 21 and 22 are heat sealed by side edge seal portions 23 and 23. In addition, a bottom film portion 24 is inserted in a folded state at the bottom of the front and rear film portions 21 and 22 and heat-sealed by a bottom seal portion 25. The inner edge portion of the bottom seal portion 25 is configured to bulge downward in an arc shape. In the illustrated example, the upper edge is in an open state.

On the other hand, the shape holding member 3 is a cylindrical body having a diamond-shaped cross-section with four corners that can be bent, and a pair of corners 3b and 3b located on one diagonal line are located on the side edges of the container body 2. Middle portions of the front and rear film holding portions 31 and 32, which are input operation portions, and the corner portions 3a and 3c located on the other diagonal line are a pair of container surface holding portions located between the side edges of the container body 2. Located in.
In the folded form, the corners 3b and 3b serving as the input operation unit are closed, and the corners 3a and 3c of the front and rear film holding units 31 and 32 are opened, and the front film unit 21 and the rear film unit 22 are opened. A pair of front and rear film holders 31 and 32 extending along the inner surface overlap each other in a planar manner. The outer shapes of the front and rear film holders 31 and 32 are exactly the same in the illustrated example.

  The outer shape of the film holding portions 31 and 32 is a shape that follows the inner circumference of the body portion 20 of the container body 2, and the corner portions 3 b and 3 b that are both side edges are linearly parallel to each other along the both side edges of the container body 2. Extending and provided on the lower side are arcuate convex portions 31f and 32f that protrude downward along the shape of the bottom seal portion 25 of the container body 2. The arc-shaped convex portions 31f and 32f are slightly narrower than the entire width of the film holding portions 31 and 32, and horizontal step portions are provided at both ends of the arc-shaped convex portions 31f and 32f. In addition, with respect to the upper side, an arcuate concave shape portion 31e, which is concave downward, so as not to hinder the opening of the body 20 of the container body 2 even when the container body 2 is closed at the upper edge. 32e is provided. The arc-shaped concave portions 31e and 32e are also slightly narrower than the entire width, and horizontal portions remain partially at both ends of the upper side.

When the side edge seal portions 23, 23 on both side edges of the container body 2 are gripped and compressed, the space between the corners 3b, 3b on one diagonal line, which is the input operation part of the shape maintaining member 3, is narrowed, and on the other diagonal line The space between the corner portions 3a and 3c of the front and rear film holding portions 31 and 32, which are container surface holding portions positioned at the position of the container body 2, is expanded and the front and rear film portions 21 and 22 of the container body 2 are pushed outward. The main body 2 is configured to be three-dimensional.
The shape holding member 3 is a plastic sheet, for example, a polypropylene sheet. The thickness of the sheet has a certain degree of rigidity. In the case of polypropylene, a thickness of about 0.4 mm to 0.6 mm is preferable.

  Further, the shape holding member 3 is provided with a locking support column 4 which is freely engageable and disengageable between the corner portions 3a and 3c of the pair of container surface holding portions, and is operated to open the front and rear film portions 21 and 22. By engaging the locking column 4 between the corner portions 3a and 3c of the container surface holding portion, the container body 2 is held in a three-dimensional shape, and the locking column 4 is detached from between the corner portions 3a and 3c to form a corner. The container body 2 is folded by narrowing the interval between the parts 3a and 3c.

  In this example, the locking column 4 is fixed to the front film holding portion 31 formed with the corner portion 3a on the one container surface holding portion side so that it can be raised and lowered, and the interval between the corner portions 3b and 3b of the input operation portion is set. When it is deformed in the narrowing direction, it rises and the tip engages with the rear film holding part 32 formed with the corner part 3c of the other container face holding part, and the gap between the corner parts 3b, 3b of the input operation part is increased. If it does, it will fall to one front film holding | maintenance part 31 side, and it will become foldable.

  Further, when the corner portion 3c of the other rear film holding portion 32 is deformed in the direction of narrowing the interval of the input operation portion, the tip portion rises so as to intersect the locking column 4 raised from the one corner portion 3a. The auxiliary support column 5 is provided, and the lock support column 4 is provided with a guide hole 42 as a guide portion with which the guide protrusion 52 of the auxiliary support column 5 is engaged.

FIG. 3A shows a developed view of the shape holding member 3.
The pair of front and back film holding portions 31 and 32 of the shape holding member 3 are formed by punching one sheet. That is, the side edges of the film holding portions 31 and 32 are connected to each other, and an adhesive piece 33 serving as an adhesive margin is provided on one side edge. Then, a fold line corresponding to the corner portion 3b provided between the film holding portions 31 and 32 and a fold line corresponding to the corner portion 3b of the adhesive piece 33 are bent, and the adhesive piece 33 is bonded to form a square cylinder shape. It is bent flat at the corners 3b and 3b of the side edges. Since it is bent at the corners 3b and 3b, it opens freely by a springback in a free state.

  The one front film holding portion 31 is provided with a locking column 4 along the longitudinal center line. The lock post 4 is defined by punching a sheet so as to border the outer diameter of the lock post 4 while leaving the fixed end side.

The corner portions 3a and 3c located at the intermediate portions of the film holding portions 31 and 32 of the shape holding member 3 are mountain-folded bent portions that deform into a convex shape toward the outside, and guide the corner portions 3a and 3c. As shown, the fold line is engraved on the sheet.
Further, a vertical valley fold bent portion 4 a that bends the locking column 4 in the vertical direction along the center line of the locking column 4 is provided. Although this vertical direction valley fold bending part 4a is following the ridgeline of the corner | angular part 3a, a folding direction is reversed in the opposite direction with respect to the corner | angular part 3a, and it deform | transforms into a concave shape toward the outer side.

And each lock | pillar support | pillar piece part 43 and 43 divided by the vertical direction valley | fold bending part 4a of this support | pillar 4 for a lock | rock is with the vertical direction valley | fold bending part 4a of the support | pillar 4 for a lock | rock at the both sides of the corner | angular part 3a. It is connected and fixed via mountain-folded connecting bends 4b and 4b in the opposite direction. The connecting bent portions 4b and 4b are inclined at an angle θ larger than 90 ° toward the outside with respect to the ridge line of the central corner portion 3a.
Due to such a bending structure of the connecting bent portions 4b and 4b and the vertical valley bent bent portion 4a and the corner portion 3a, the locking support column 4 is configured to rise and fall according to the bent angle of the corner portion 3a. Yes.
FIGS. 3B and 3C schematically show the state of getting up. That is, in the state where the corner 3a is open, as shown in FIG. 3B, the lock support column 4 is located on the same plane as the surface of the front film holding portion 31, and the corner 3a is folded in a mountain. When bending is started, as shown in FIG. 3 (C), the vertical valley fold bent portion 4a of the locking column 4 is bent into a valley fold shape at the same time as the corner portion 3a. It bends and the locking column 4 rises backward with respect to the front film holding part 31.

  Guide holes 42 and 42 with which the auxiliary struts 5 are engaged are provided in the lock strut pieces 43 and 43, respectively. In addition, a small hole is provided at the intersection between the corner 3a and the connecting bent portions 4b and 4b, and at the intersection between the connecting bent portions 4b and 4b and the outer cutting line of the lock support column 4 so as to be easily bent. Yes.

  In the illustrated example, the intersection of the connecting bent portions 4b and 4b intersects with the corner 3a. However, the intersection of the connecting bent portions 4b and 4b may not be located on the front film holding portion. For example, as shown in FIG. 5 (A), a C-shape may be employed in which the upper ends of the connecting bent portions 4b ′ and 4b ′ are separated from each other in the left and right directions.

  In addition, an engaging claw 41 that engages with the engaging hole 6 of the other rear film holding portion 32 at the time of locking is formed at the free end portion of the locking column 4. As the engagement hole 6, a hole formed by punching the auxiliary column 5 formed in the rear film holding portion 32 is used.

  The auxiliary strut 5 is provided on the other rear film holding portion 32 and rises so as to intersect the locking strut 4 when it is deformed in the direction of narrowing the interval between the corner portions 3b and 3b which are input operation portions.

  The auxiliary strut 5 is also provided on the rear film holding portion 32 along the longitudinal center line, and is defined by punching a sheet so as to frame the outer diameter while leaving the fixed end side. . In addition, a vertical valley fold bending portion 5 a that bends the auxiliary column 5 in the vertical direction is provided along the center line of the auxiliary column 5. This vertical direction trough bending part 5a is following the corner | angular part 3c, a folding direction is reversed with respect to the corner | angular part 3c in the opposite direction, and deform | transforms into a concave shape toward the outer side.

Mountain folds in which each of the auxiliary strut pieces 53 and 53 divided by the vertical trough bent portion 5a of the auxiliary strut 5 is opposite to the vertical trough bent portion 5a of the auxiliary strut 5 on both sides of the corner portion 3c. It is connected and fixed via the connecting bent portions 5b and 5b having a shape. The connecting bent portions 5b and 5b are inclined at an angle larger than 90 ° toward the outside with respect to the ridgeline of the central corner portion 3c, and are basically the same as the connecting bent portions 4b and 4b of the lock support column 4. It is.
The tip of the auxiliary support piece 53 is inclined at an angle similar to that of the connecting bends 5b and 5b, has a V-shape as a whole, and guide holes 42 and 42 provided on the lock support 4 side. Guide protrusions 52, 52 that can be freely inserted and removed are projected.

  With such a bent structure of the connecting bent portions 5b and 5b and the vertical valley bent bent portion 5a and the corner portion 3c, the auxiliary support column 5 is raised and lowered according to the bent angle of the corner portion 3c. In addition, a small hole is provided at an intersection between the corner 3c and the connecting bent portions 5b and 5b so as to be easily bent.

  In the illustrated example, a guide protrusion 52 is provided at the tip of each auxiliary support piece 53, 53. For example, as shown in FIG. 5B, the guide hole 42 on the lock support 4 side. 'May be a small hole, and the guide portions may be triangular guide protrusions 52' and 52 '.

  Next, the procedure for using the packaging container of this embodiment will be described.

As shown in FIG. 4, the folded shape holding member 3 is inserted into the container body 2 at the time of bag making or content filling.
As shown in FIG. 4B, the arcuate convex portions 31f and 32f on the lower side are inserted to the left and right across the central ridge line of the bottom film portion 24 that is folded in half. The shape holding member 3 and the container body 2 may be bonded and fixed, but may be simply inserted.

  At the time of use, as shown in FIG. 1, the side edge corners 3b of the shape holding member 3 are obtained by grasping the side edge seal portions 23, 23 on both side edges and pressing in the direction of narrowing the distance between the side edges. 3b opens, and at the same time, the central corners 3a and 3c are bent into a mountain fold, and are basically three-dimensionalized in a rhombus shape.

  At this time, the locking column 4 provided along the corner 3a of the mountain fold rises on the front film holding unit 31 that is the gripping surface, and the engaging claw 41 at the tip of the locking column 4 is the other film holding unit. The three-dimensional shape is maintained by engaging with the hole edge of the engagement hole 6 provided in 32.

That is, when the central corner portion 3a is bent, the connecting bent portions 4b and 4b positioned at the fixed end of the locking column 4 are bent into a mountain fold shape, and the vertical valley fold bent portion 4a is bent in the vertical direction. It rises with respect to the film holding part 31 according to the angle of the connection bending part 4b, 4b of a fixed end. When the rising angle of the locking column 4 reaches a predetermined angle, the engagement claw 41 at the tip engages with the hole edge of the engagement hole 6 provided in the opposing film holding part 32.
In order to raise the lock column 4, it is most effective to apply pressure at a height near the fixed end of the lock column, and it is necessary to mark the lock position on the side edge seal portion. Is preferred.

  At this time, the auxiliary column 5 of the rear film portion 22 is also bent and raised in the same manner as the locking column 4, and the guide protrusions 52, 52 at the tip of the auxiliary column 5 are inserted into the guide holes 42, 42 of the locking column 4. It is inserted so as to intersect with each other, so that the lateral support of the locking column 4 is prevented.

  When the hand force is loosened, an elastic force is applied to the container body 2 to restore the shape of the front film portion 21 and the rear film portion 22 in the closing direction, and the front end of the locking column 4 is applied to the rear film portion 22 in a predetermined manner. The engagement claw 41 is prevented from being disengaged from the engagement hole 6.

Thus, the front film portion 21 and the rear film portion 22 are firmly held by the shape holding member 3 locked by the lock support column 4, and have a high rigid property while being made of a film. Similarly, it can be used firmly in the hand.
For example, when the content liquid is poured out, there is no possibility that the container body 2 made of film bends and overflows, and even when a beverage in the container main body 2 is drunk, the content liquid jumps out by gripping the container main body 2 too much. There is nothing. Further, in the case of using water and powder in the container main body 2 and shaking, the water can be gripped and poured like a rigid container and shaken. Moreover, since the internal volume of the container main body 2 is expanded, it becomes easy to stir.
From the standpoint of maintaining the shape, a configuration may be added in which the side edge seal portions 23, 23 of the container body are bent to increase the rigidity.

  After use, the engaging claw 41 of the locking column 4 can be removed from the engaging hole 6 and folded. At that time, the engagement state can be released by pressing the engagement claw 41 of the locking column 4 from the outside of the container body 2. The position of the engaging claw 41 is preferably shown with various marks.

In the above embodiment, the locking support column 4 and the auxiliary support column 5 are formed by cutting out the front and rear film holding portions 31 and 32. However, the film holding portion is not a configuration in which the film holding portions 31 and 32 are cut out. 31 and 32 may be made of a separate material and fixed to the film holding portions 31 and 32 by adhesion or the like.
Further, the configuration in which the shape holding member 3 is three-dimensionally described has been described. However, for example, it may be a parallelogram in which the positions of the front and rear corners are shifted, or a polygonal shape such as a hexagonal shape, or three-dimensionally in an elliptical shape. The shape to do may be sufficient.
Moreover, it may be a pantograph-like link mechanism, not limited to the cylindrical shape. In short, the shape holding member 3 includes a pair of input operation units located on the side edge of the container body 2 and the side edges of the container body. It is sufficient if it has a pair of container surface holding portions located between them and the operation in the direction of narrowing the interval between the input operation portions can be converted into the operation in the direction of opening the container body by the container surface holding portion.
Further, when it is desired to simplify the structure, there is no need for an auxiliary support column. Similarly, even if there is no engagement claw or engagement hole, the lock support column is close to the opposing surface at an angle close to 90 °. A rigid feeling can be obtained by contacting or engaging the film portion.

  Further, in the present embodiment, the form in which the upper end of the container main body 2 is opened has been described, but the present invention can also be applied to a container to which a spout is attached. Further, although a standing pouch has been described as an example of the container body 2, the container body 2 is not limited to such a standing pouch, and can be applied to a pouch that does not have independence. Furthermore, the present invention is not limited to a pouch, and in short, can be applied to various containers molded from a flexible soft material. In particular, when used for shaking and mixing, it is preferable to adopt a resealable configuration in which a spout, a zipper or the like is attached to the upper edge.

FIG. 1 shows a packaging container according to an embodiment of the present invention. FIG. 1 (A) is a perspective view showing a state in which the side edges are gripped by hand, and FIG. 1 (B) is seen from the upper end opening. FIG. 2 shows the shape holding member of FIG. 1. FIG. 2A is a front view, FIG. 2B is a rear view, and FIG. 2C is a partially broken side view of a three-dimensional form. (D) is a top view of a three-dimensional form, and (E) is a side view of a folded form. FIG. 3A is a development view of the shape holding member of FIG. 1, and FIGS. 3B and 3C are schematic perspective views for explaining the upright operation of the lock support column of the shape holding member. 4A is an exploded perspective view of the packaging container of FIG. 1, and FIG. 4B is a perspective view of a folded state in which a shape holding member is inserted into the container body. 5A is a development view of a modified example of the shape holding member of FIG. 1, and FIG. 5B is a developed view of a shape holding member according to another modified example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Packaging container 2 Container main body 20 Body part 21 Front film part 22 Rear film part 23 Side edge seal part 24 Bottom part film part 25 Bottom part seal part 3 Shape holding member 3a, 3c Corner | angular part (front surface, rear surface side)
3b Corner (input operation unit, side edge)
31 Front film holder (container surface holder)
32 Rear film holder (container surface holder)
31e, 32e Arc-shaped concave part 31f, 32f Arc-shaped convex part 33 Adhesive piece 4 Locking column 41 Engaging claw 42 Guide hole 43 Each locking column part 4a Longitudinal valley folding part 4b Connection bending part 5 Auxiliary Column 5a Longitudinal valley fold bent portion 5b Linked bent portion 52 Guide protrusion 53 Each auxiliary column piece 6 Engagement hole θ angle

Claims (7)

A container body made of a flexible soft material, and a shape holding member that is inserted into the container body and holds the container body from the inside,
The shape holding member has a pair of input operation parts located at the side edge of the container body and a pair of container surface holding parts located between the side edges of the container body, and narrows the interval between the input operation parts. The operation of the direction can be converted into the operation of opening the container body by the container surface holding part,
Further, the shape holding member is provided with a locking support column that can be engaged and disengaged between the pair of container surface holding portions, and the locking support column is engaged between the container surface holding portions that are operated in the opening direction of the container body. A packaging container characterized in that the container main body can be folded by holding the container main body in a three-dimensional shape and detaching the locking strut from between the container surface holding parts to narrow the interval between the container surface holding parts.   The shape holding member is a rhombus-shaped cylindrical body having four corners that can be bent, and a corner portion located on one diagonal line is a pair of input operation portions located on a side edge of the container body, and the other diagonal line When the upper corner is positioned in the middle of the front and back container surface holding parts and gripping both side edges of the container body and applying force, it is on one diagonal line that is the input operation part of the shape holding member The space between the corners is narrowed, the space between the corners of the container surface holding part located on the other diagonal line is enlarged, the container body is pushed outward, and the container body is three-dimensionalized. A packaging container according to 1.   The locking strut is fixed to one container surface holding part so as to be able to be tilted up and down, and when it is deformed in a direction to narrow the interval between the input operation parts of the shape holding member, it rises and the tip engages with the other container surface holding part. The packaging container according to claim 1 or 2, wherein the packaging container is configured such that when it is deformed in a direction in which the interval between the input operation sections is widened, the input operation section is folded toward one container surface holding section.   The lock strut is configured to bend in the vertical direction opposite to the bending direction of the corner portion of one container surface holding portion, and each lock strut piece section divided by the vertical bend portion of the lock strut is a container. The packaging according to claim 2, wherein the package is connected to both sides of the corner ridge line of the surface holding portion via a connecting bent portion, and the connecting bent portion is bent in a direction opposite to the longitudinal bent portion of the locking column. container.   The packaging container according to claim 2 or 3, wherein an engagement claw that engages with an engagement hole provided in the other container surface holding portion is provided at the tip of the locking column.   The other container surface holding part is provided with an auxiliary column that rises so as to intersect the locking column that rises from the one container surface holding unit when it is deformed in a direction to narrow the interval of the input operation unit of the shape holding member. The packaging container according to any one of claims 3 to 5, wherein the lock strut is provided with a guide portion that engages with a tip portion of the auxiliary strut.   The packaging container according to any one of claims 1 to 5, wherein the container body has a self-supporting structure.

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