JP2022040480A - Buffer structure and packaging material with the same - Google Patents

Abstract

To provide a cushioning structure capable of positioning packaged items without lowering a cushioning property of a portion in which the packaged items are stored, and a packaging material having the same.SOLUTION: A cushioning structure is formed by bending a single sheet material, and an impact applied to the packaged object is buffered by being placed along the ridge line where the adjacent first and second surfaces of the packaged object intersect between the packaging box and the packaged object stored in the packaging box. A cushioning structure can store L-shaped bundled items in a side view having a first plate-shaped portion and a second plate-shaped portion that intersect each other, and is equipped with a first storage unit, a second storage unit, and a movement control mechanism. The first storage section has a square tubular shape and stores the first plate-shaped section of the bundled items. The second storage section has a square tubular shape and stores the second plate-shaped section of the bundled items. The movement control mechanism regulates movement of the packaged items in a ridge line direction in the first storage section and the second storage section.SELECTED DRAWING: Figure 8

Description

The present invention relates to a cushioning structure arranged in a gap between a packaging box and an object to be packed stored in the packaging box, and a packaging material provided with the buffer structure.

Conventionally, a packaging case made of a corrugated cardboard sheet or the like is widely used when packing an object to be packed such as an electric product, a precision instrument main body, or a replacement part. In such a packaging case, various methods for efficiently storing the packaged items and the packaged items to be packaged have been proposed.

For example, in Patent Document 1, of the four top flaps, the first top flap is folded into the main body portion to form a partition portion between the main body storage portion and the accessory storage portion provided above the main body storage portion, and this partition is formed. An accessory storage part is formed at the upper part of the part, and an accessory individual storage part is formed on both sides of the accessory storage part by the second top flap and the fourth top flap, and the accessory storage part is formed by the third top flap. A carton with an accessory storage portion is disclosed in which a carton lid portion that also serves as a lid for the product storage portion is formed.

Further, in Patent Document 2, a partition piece portion provided between an electric device and a power cord, a U-shaped folding bundle accommodating portion forming a partition for accommodating a folded bundle of the power cord, and two shock absorbers are provided. The shape and size of the partition piece portion, the folded bundle accommodating portion, and the abutting portion are provided by providing a pad consisting of a single thick paper piece having a pair of contact portions in contact with the thick paper piece, and by changing the bending portion of the thick paper piece. The electrical equipment packaging structure that can be changed is disclosed.

Japanese Unexamined Patent Publication No. 2000-142672 Japanese Unexamined Patent Publication No. 2012-81968

In the storage structure as in Patent Documents 1 and 2, the gap between the cushioning materials is used as a storage space for the bundled items. Therefore, there is a problem that the cushioning performance of the portion where the bundled items are stored is lowered. In addition, since the packaged items are not positioned in the storage space, the packaged items may move due to vibration or impact during transportation, which may cause damage or damage to the packaged items.

In view of the above problems, the present invention provides a cushioning structure capable of positioning the packaged items without lowering the cushioning property of the portion in which the packaged items are stored, and a packaging material provided with the cushioning structure. The purpose.

In order to achieve the above object, the first configuration of the present invention is that the first surface and the second surface of the packaged object intersect each other between the packaging box and the packaged object stored in the package box. It is a cushioning structure formed by bending a single sheet material, which is arranged along the ridgeline and cushions the impact applied to the packaged object. The cushioning structure can store an L-shaped packaged object having a first plate-shaped portion and a second plate-shaped portion that intersect each other, and has a first storage portion, a second storage portion, and movement restrictions. It is equipped with a mechanism. The first storage portion has a square tubular shape and is arranged so as to face the first surface, and the first plate-shaped portion of the bundled item is stored. The second storage portion has a square tubular shape and is arranged so as to face the second surface, and the second plate-shaped portion of the bundled item is stored. The movement control mechanism regulates the movement of the packaged items in the ridgeline direction in the first storage unit and the second storage unit.

According to the first configuration of the present invention, since the L-shaped packaged items in the side view can be stored in the buffer structure, it is not necessary to separately provide a storage space for the packaged items or a dedicated storage box. Therefore, the cost of packaging materials for bundled items can be reduced. Further, since the packaging size of the entire packaging material including the outer box is reduced, the packaging material cost, the transportation cost, and the storage cost can be reduced. In addition, since the square tubular first storage part and the second storage part, which are the storage parts of the bundled items, function as cushioning materials, they are bundled as compared with the conventional configuration in which the bundled items are stored in the gaps of the cushioning material. It is possible to secure the cushioning property of the part where the object is stored. Further, since the movement regulation mechanism regulates the movement of the packaged object in the ridgeline direction, it is possible to suppress deformation and damage of the packaged object due to vibration or impact during transportation.

An exploded perspective view of the packaging material 100 using the buffer structure 7c of the present invention. Side sectional view of the stopper 10 used for the packaging box 1 before use as viewed from a direction perpendicular to the first hinge portions 18a and 18b. Perspective view of the state in which the key member 15 of the stopper 10 is inserted inside the tubular portion 16 as viewed from the flange portion 17 side. Perspective view of product 4 packed in packaging box 1 Perspective view of the package 30 packed in the packaging box 1 together with the product 4. A perspective view showing a state in which the corner cushioning material 7a, the side cushioning material 7b, and the cushioning structures 7c and 7d are arranged around the product 4. Plan view showing the state before assembling the cushioning structure 7c It is a perspective view which shows the state in the process of assembling the cushioning structure 7c, and is the 1st The figure which shows the state which formed the storage part 70 It is a perspective view which shows the state in the process of assembling the cushioning structure 7c. The figure which shows the formed state It is a perspective view which shows the state in the process of assembling the cushioning structure 7c, and shows the state which the main body part 30a of the package 30 is inserted into the 1st storage part 70 through the 1st insertion opening 53 from the state of FIG. Figure shown Perspective view showing the assembled state of the buffer structure 7c Side view showing the assembled state of the buffer structure 7c

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a packaging material 100 using the buffer structure 7c of the present invention. The packaging material 100 includes a packaging box 1, a corner cushioning material 7a, a side cushioning material 7b, and cushioning structures 7c and 7d (all of which are seen in FIG. 6) arranged in the packaging box 1. The packaging box 1 is composed of a pallet 2 with a tray and an upper box 3.

The pallet 2 with a tray has a bottom surface 5a on which the product 4 (packed object), the corner cushioning material 7a, and the side cushioning material 7b (see FIG. 6) are placed, and the side wall 5b erected on the peripheral edge of the bottom surface 5a. It has a tray 5 made of, and a pallet 6 fixed to the lower surface of the tray 5. An oval-shaped first through hole 8a is formed in each side wall 5b of the tray 5.

The upper box 3 has a square cylinder shape with an open bottom surface covering the sides and the upper side of the product 4, and the top surface 3b is formed by closing the four flaps connected to the side plate 3a. At the lower part of each side plate 3a of the upper box 3, a second through hole 8b is formed at a position overlapping with the first through hole 8a of the pallet with a tray 2. The pallet with tray 2 and the upper box 3 are connected by inserting the stopper 10 (see FIG. 2) in a state where the first through holes 8a and 8b are overlapped with each other.

The pallet 6 is composed of, for example, a plurality of support columns 6a formed by laminating corrugated cardboard sheets, and a top plate (not shown) and a bottom plate 6b fixed to the upper and lower surfaces of each support column 6a. An arm insertion hole 9 for inserting an arm of a forklift or a hand pallet (pallet transport trolley) is formed between them.

FIG. 2 is a side sectional view of the stopper 10 used for the packaging box 1 as viewed from a direction perpendicular to the first hinge portions 18a and 18b. FIG. 3 is a perspective view of the state in which the key member 15 of the stopper 10 is inserted into the tubular portion 16 as viewed from the flange portion 17 side (outside of the packaging box 1).

As shown in FIGS. 2 and 3, the stopper 10 is composed of a base member 14 and a key member 15 that is bendably connected to the base member 14. The base member 14 can be rotated via the first hinge portions 18a and 18b on the tubular portion 16, the flange portion 17 provided at one end of the tubular portion 16, and the facing inner surfaces of the tubular portion 16. It has a pair of hook members 19a and 19b connected to each other. The hook members 19a and 19b are bent in an L-shaped cross-sectional view with the first hinge portions 18a and 18b as base ends, respectively, and the tip portions protrude from the tubular portion 16.

The key member 15 has a push-open portion 25 having substantially the same outer dimensions as the inner dimensions of the tubular portion 16. By bending the key member 15 along the second hinge portion 24 and folding it back toward the base member 14, the push-open portion 25 comes into contact with the hook members 19a and 19b. Then, the push-open portion 25 is inserted into the tubular portion 16 from the flange portion 17 side of the base member 14. As a result, the hook members 19a and 19b are pressed by the push-open portion 25, and the hook members 19a and 19b are outside the tubular portion 16 (in the direction of the arrow in FIG. 2) with the first hinge portions 18a and 18b as rotation axes, respectively. Rotates to.

As shown in FIG. 3, when the key member 15 is completely inserted into the base portion 14 (cylindrical portion 16), the tips of the hook members 19a and 19b pressed by the push-open portion 25 are tubular portions. It protrudes from 16 substantially parallel to the flange portion 17. As a result, the side wall 5b of the pallet with tray 2 and the upper box 3 are sandwiched by the flange portion 17 and the hook members 19a and 19b.

FIG. 4 is a perspective view of the product 4 packed in the packaging box 1. Product 4 is an ink tank that supplies ink to an inkjet printer (not shown). Handles 4a for transportation are provided at two locations on the upper surface of the product 4. Caster 4b is attached to the four corners of the lower surface of the product 4.

FIG. 5 is a perspective view of the package 30 packed in the packaging box 1 together with the product 4. The bundled item 30 has an L-shaped side view including a flat plate tray-shaped main body portion (first plate-shaped portion) 30a and a vertical wall portion (second plate-shaped portion) 30b that stands vertically from one end of the main body portion 30a. It is a member and is a bracket for connecting the product 4 (ink tank) to the inkjet printer. The dimensions of the main body portion 30a and the vertical wall portion 30b in the longitudinal direction (ridge line direction, arrow AA'direction) are the same (= L).

FIG. 6 is a perspective view showing a state in which the corner cushioning material 7a, the side cushioning material 7b, and the cushioning structures 7c and 7d are arranged around the product 4. In FIG. 6, the description of the upper box 3 is omitted. The corner cushioning material (fixed cushioning material) 7a, the side cushioning material 7b, and the cushioning structures 7c and 7d are each formed by bending one corrugated cardboard sheet.

The corner cushioning materials 7a are arranged at the four corners of the product 4 and protect the corners of the product 4 from external impact. The side cushioning material 7b is arranged along the left side surface and the right side surface of the product 4 to protect the left side surface and the right side surface of the product 4 from external impact. The corner cushioning material 7a and the side cushioning material 7b extend above the upper surface of the product 4, and together with the cushioning structures 7c and 7d, have a function of protecting the upper surface of the product 4 from external impact.

The cushioning structure 7c is arranged along a ridgeline where the front surface (first surface) and the upper surface (second surface) of the product 4 intersect, and protects the front surface and the upper surface of the product 4 from external impact. The cushioning structure 7d is arranged along the upper surface of the back surface of the product 4 to protect the back surface and the upper surface of the product 4 from external impact. The package 30 is stored inside the cushioning structure 7c. The detailed configuration of the buffer structure 7c will be described later.

A procedure for packing the product 4 using the packaging box 1 shown in FIG. 1 will be described. First, the product 4 is placed on the bottom surface 5a of the pallet 2 with a tray. Next, the corner cushioning materials 7a and the side cushioning materials 7b are arranged at the four corners and the left and right side surfaces of the product 4, and the cushioning structures 7c and 7d are mounted on the front and back surfaces of the product 4. Then, after covering the upper box 3, each side wall 5b of the pallet with tray 2 is erected. Finally, the base portion 14 of the stopper 10 is inserted with the first through hole 8a of the side wall 5b and the second through hole 8b of the upper box 3 overlapped, and the push-open portion 25 is inserted inside the tubular portion 16. By doing so, the pallet with tray 2 and the upper box 3 are integrally connected.

When unpacking the packaging box 1, the push-opening portion 25 is pulled out from the tubular portion 16 by pushing up the key member 15 of the stopper 10 from the state shown in FIG. Along with the pulling-out operation of the push-open portion 25, the hook members 19a and 19b that were pressed by the push-open portion 25 and rotated outward are rotated inward by the restoring force of the first hinge portion 18, and the state shown in FIG. Return to. Finally, the base portion 14 is pulled out from the first through holes 8a and 8b to release the connection between the side wall 5b of the tray-equipped pallet 2 and the upper box 3.

FIG. 7 is a plan view showing a state before assembling the buffer structure 7c. In FIG. 7, the broken line and the alternate long and short dash line indicate a folding line, and the solid line indicates a cut line. Further, the hatched portion indicates a punched hole. The cushioning structure 7c is formed by bending a single corrugated cardboard sheet, and is connected via a folding line to the first side plate 40, the second side plate 41, the first connecting plate 42, the second connecting plate 43, and the first. It has a folding plate 44, an upper plate 45, a bottom plate 46, a third connecting plate 47, and a second folding plate 48.

The first fixed piece 50 having a plan view table shape is formed in two places on the first side plate 40. The second fixed piece 51 having a plan view table shape is formed at two positions on the second side plate 41, and a rectangular insertion port 52 is formed between the second fixed pieces 51. The first connecting plate 42 connects the first side plate 40 and the second side plate 41 via a fold line.

The second connecting plate 43 is connected to the end edge of the second side plate 41 on the opposite side of the first connecting plate 42 via a folding line. A rectangular first insertion slot 53 is formed in the second connecting plate 43. The opening width w1 of the first insertion port 53 is substantially the same as the dimension L (see FIG. 5) in the ridgeline direction of the main body portion 30a of the package 30. The first folding plate 44 is connected to the end edge of the second connecting plate 43 on the opposite side of the first side plate 41 via a folding line. The first folding plate 44 is formed with rectangular first fixing holes 54 at two locations. At the boundary between the second side plate 41 and the second connecting plate 43, second fixing holes 55 having an arc shape at one end are formed at two locations.

The upper plate 45 is continuously provided at the end edge of the first side plate 40 opposite to the first connecting plate 42 via a folding line. A third fixed piece 56 having a plan view table shape is formed in two places on the upper plate 45. On the left and right side edge edges of the upper plate 45, positioning pieces 57 having a plan view table shape are continuously provided via fold lines. The bottom plate 46 is formed with slits 58 at two locations. The third connecting plate 47 connects the upper plate 45 and the bottom plate 46 via a fold line. On the third connecting plate 47, a fourth fixed piece 59 having a plan view table shape is formed at two places.

The second folding plate 48 is continuously provided at the end edge of the bottom plate 46 opposite to the third connecting plate 47 via a folding line. The second folding plate 48 is divided into three by two horizontal folding lines. A rectangular second insertion slot 62 is formed in the portion sandwiched between the two fold lines. The opening width w2 of the second insertion port 62 is substantially the same as the dimension L in the ridgeline direction of the standing wall portion 30b of the package 30. At the boundary between the bottom plate 46 and the second folding plate 48, a third fixing hole 60 having an arc shape at one end is formed at two places, and a rectangular insertion piece 61 is formed between the third fixing holes 60.

A partition piece 63 is continuously provided at the opening end of the second insertion port 62 in the ridge line direction (BB'direction in FIG. 8) via a fold line. A fourth fixing hole 64 is formed so as to communicate with the second insertion port 62 at two positions on the edge of the second insertion port 62 on the side far from the bottom plate 46 (upper side in FIG. 7).

Hereinafter, a method of assembling the buffer structure 7c of the present embodiment will be described. First, from the state of FIG. 7, the second side plate 41, the first connecting plate 42, the second connecting plate 43, and the first folding plate 44 are bent into a square cylinder along the folding line. Next, by inserting the first fixing piece 50 of the first side plate 40 into the first fixing hole 54 of the first folding plate 44, the first side plate 40, the first connecting plate 42, the second connecting plate 43, and the first The folded state of the folding plate 44 is maintained.

As a result, as shown in FIG. 8, the first storage portion 70 is surrounded by the first side plate 40, the second side plate 41, the first connecting plate 42, and the second connecting plate 43, and the first insertion port 53 opens on the upper surface. Is formed.

Next, the partition piece 63 formed on the second folding plate 48 of the cushioning structure 7c assembled in the state of FIG. 8 is cut up and raised substantially perpendicular to the second folding plate 48. Next, with the partition piece 63 upright, the bottom plate 46 and the second folding plate 48 are bent into a square cylinder along the folding line. Then, the protrusion 63a of the partition piece 63 is inserted into the slit 58 of the bottom plate 46, and the fourth fixing piece 59 formed in the third connecting plate 47 is inserted into the fourth fixing hole 64 of the second folding plate 48, whereby the bottom plate 46 is inserted. , The bent state of the second folding plate 48 and the partition piece 63 is maintained.

As a result, as shown in FIG. 9, a second storage portion 71 is formed, which is surrounded by the bottom plate 46, the third connecting plate 47, and the second folding plate 48, and the second insertion port 62 opens on the lower surface. After assembling to the state of FIG. 9, as shown in FIG. 10, the main body portion 30a of the package 30 is inserted into the first storage portion 70 from the first insertion port 53.

From the state of FIG. 10, the upper plate 45 and the third connecting plate 47 are bent along the folding line. Along with the bending operation, the vertical wall portion 30b of the package 30 is stored in the second storage portion 71 via the second insertion port 62. Then, the insertion piece 61 is inserted into the insertion port 52 of the second side plate 41, the second fixing piece 51 formed in the second side plate 41 is inserted into the third fixing hole 60, and the third fixing piece formed in the upper plate 45 is inserted. By inserting the 56 into the second fixing hole 55, the bent state of the upper plate 45 and the third connecting plate 47 is maintained.

FIG. 11 is a perspective view of the state in which the assembly of the buffer structure 7c is completed as viewed from the first side surface 40 side. FIG. 12 is a side view of the state in which the assembly of the buffer structure 7c is completed as viewed from the left front side of FIG. As shown in FIG. 6, the cushioning structure 7c assembled as shown in FIGS. 11 and 12 has the first storage unit 70 facing the upper front surface of the product 4, and the second storage unit 71 facing the upper surface of the product 4. It is attached to the upper part of the two corner cushioning materials 7a in a bridging manner. Then, the cushioning structure 7c is positioned by bending the positioning piece 57 formed on the side edge of the upper surface 45 of the cushioning structure 7c and inserting it inside the corner cushioning material 7a.

According to the configuration of the present embodiment, since the packaged item 30 having an L-shaped side view can be stored in the buffer structure 7c, it is not necessary to separately provide a storage space for the packaged item 30 or a dedicated storage box. Therefore, the packaging material cost of the package 30 can be reduced. Further, since the packaging size of the entire packaging material 100 including the upper box 3 is reduced, the packaging material cost, the transportation cost, and the storage cost can be reduced.

Further, since the square tubular first storage portion 70 and the second storage portion 71, which are the storage portions of the packaged items 30, function as cushioning materials, compared with the conventional configuration in which the packaged items are stored in the gaps between the cushioning materials. It is possible to secure the cushioning property of the portion in which the packaged item 30 is stored.

Further, in the first storage unit 70 in which the main body portion 30a of the packaged item 30 is stored, the opening width w1 of the first insertion port 53 is the dimension L in the ridgeline direction (AA'direction in FIG. 5) of the packaged item 30. Is almost the same as. As a result, the movement of the main body portion 30a in the ridge line direction (the BB'direction in FIG. 11) of the first storage portion 70 and the second storage portion 71 is restricted by the first insertion port 53. The first insertion port 53 constitutes a movement control mechanism that regulates the movement of the package 30 in the direction of the ridgeline.

On the other hand, in the second storage portion 71 in which the vertical wall portion 30b of the packaged item 30 is stored, the opening width w of the second insertion port 62 is substantially the same as the dimension L in the ridgeline direction of the packaged item 30 and. The partition piece 63 stands up from the opening end of the second insertion port 62 in the direction of the ridgeline. The protrusion 63a at the tip of the partition piece 63 is inserted into the slit 58 and fixed. As a result, the vertical wall portion 30b is restricted from moving in the ridgeline direction of the first storage portion 70 and the second storage portion 71 by the second insertion port 62 and the partition piece 63. The second insertion slot 62, the partition piece 63, and the slit 58 constitute a movement restricting mechanism for restricting the movement of the package 30 in the ridgeline direction. Further, the partition piece 63 also has a role of reinforcing the cushioning performance of the second storage portion 71.

Therefore, since the packaged item 30 does not move due to vibration, impact, or the like during transportation, deformation or damage of the packaged item 30 can be suppressed. Further, since the cushioning structure 7c has a simple structure in which one sheet material is simply bent and assembled, the assembling workability can be maintained. Further, since a separate member for fixing the package 30 is not required, the number of members can be reduced and the cost of the packaging material can be reduced.

Further, since the cushioning structure 7c is positioned and held by the corner cushioning material 7a by the positioning piece 57, the cushioning position of the cushioning structure 7c with respect to the product 4 can be accurately positioned, and impact or vibration during transportation can be achieved. Therefore, there is no possibility that the position of the cushioning structure 7c will be displaced.

Others The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above embodiment, the cushioning structure 7b used for the packaging box 1 using the pallet 2 with a tray composed of the tray 5 and the pallet 6 has been described, but the cushioning structure 7b of the present invention is provided with the pallet 6. Of course, it can be applied to the C-type packaging box consisting only of the upper box 3 and the tray 5, and the A-type and B-type packaging boxes in which the upper box and the tray (bottom surface) are integrated. Is.

Further, in the above embodiment, the bundled item 30 is housed in the cushioning structure 7c, but for example, other bundled items (for example, a power cord, an ink transport tube, etc.) are stored in the cushioning structure 7d and the side cushioning material 7b. ) Can also be stored.

The present invention can be used for a buffer structure arranged in a gap between a packaged object and a packaging box for packaging the packaged object. By utilizing the present invention, it is possible to provide a cushioning structure capable of positioning the packaged items without lowering the cushioning property of the portion in which the packaged items are stored, and a packaging material having the same.

1 Packaging box 2 Pallet with tray 3 Upper box 4 Product (packed item)
7a Corner cushioning material 7b Side cushioning material 7c, 7d Cushioning structure 30 Included items 30a Main body (first plate-shaped part)
30b Standing wall part (second plate-shaped part)
40 1st side plate 41 2nd side plate 42 1st connecting plate 43 2nd connecting plate 44 1st folding plate 45 Top plate 46 Bottom plate 47 3rd connecting plate 48 2nd folding plate 53 1st insertion port (movement regulation mechanism)
57 Positioning piece 58 Slit 62 Second insertion slot (movement regulation mechanism)
63 Partition piece (movement regulation mechanism)
63a Protrusion 70 1st storage part 71 2nd storage part 100 Packaging material

Claims (7)

The impact applied to the packaged object is arranged along the ridgeline where the adjacent first surface and the second surface of the packaged object intersect between the packaging box and the packaged object stored in the packaged object. It is a cushioning structure formed by bending a single sheet material to cushion the material.
The cushioning structure can store an L-shaped packaged object having a first plate-shaped portion and a second plate-shaped portion that intersect each other.
A square cylindrical first storage portion that is arranged facing the first surface and stores the first plate-shaped portion of the bundled item.
A square cylindrical second storage portion arranged facing the second surface and accommodating the second plate-shaped portion of the bundled item, and a second storage portion.
In the first storage section and the second storage section, a movement control mechanism that regulates the movement of the packaged object in the direction of the ridgeline, and a movement control mechanism.
A buffer structure characterized by comprising. The first storage portion includes a first side plate, a second side plate facing the first side plate, a first connecting plate connecting the first side plate and the lower ends of the second side plate, and the second side plate. It is surrounded by a second connecting plate that is connected to the upper end of the above and a first folding plate that is connected to the second connecting plate and overlaps with the first side plate.
The movement regulation mechanism is
It is a first insertion port formed in the second connecting plate and into which the first plate-shaped portion is inserted.
The buffer structure according to claim 1, wherein the opening width of the first insertion port and the length of the first plate-shaped portion in the ridge line direction are substantially the same. The second storage portion includes an upper plate connected to the upper end of the first side plate, a bottom plate facing the upper plate, a third connecting plate connecting the upper plate and the bottom plate, and the bottom plate. It is surrounded by a second folding plate that is connected in series and overlaps the upper plate and the third connecting plate.
The movement regulation mechanism is
It is a second insertion port formed in the second folding plate and into which the second plate-shaped portion is inserted.
The buffer structure according to claim 1 or 2, wherein the opening width of the second insertion port and the length of the second plate-shaped portion in the ridge line direction are substantially the same. The movement regulation mechanism is
A pair of partition pieces connected to the opening end of the second insertion port of the second folding plate in the direction of the ridge line via the fold line, and
It has a pair of slits formed on the bottom plate and facing the tip of the partition piece that stands substantially vertically.
The buffer structure according to claim 3, wherein the pair of partition pieces has a protrusion formed at the tip portion and inserted into the slit. The upper plate is formed with a pair of positioning pieces connected to each other via a fold line at both end edges in the ridge line direction.
The cushioning structure according to any one of claims 1 to 4, wherein the positioning piece is bent and inserted into another adjacent cushioning material to be positioned in the ridgeline direction. With the packaging box
The buffer structure according to any one of claims 1 to 4,
Packaging material with. With the packaging box
The fixed cushioning materials arranged at the four corners of the packaged object,
The cushioning structure according to claim 5, which is arranged between the fixed cushioning materials on the upper surface of the packaged object.
Have,
The packaging material is characterized in that the cushioning structure is positioned in the ridgeline direction by bending the positioning piece and inserting it into the adjacent fixed cushioning material.

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