JPH0776371A - Packing structure - Google Patents

Abstract

PURPOSE:To make it not bulky when piled up in a great number, requiring less space for storage and make the transportation thereof easy by making a packing case collapsible and by producing cushioning materials for packing and a pressing cover out of single-sheet materials with engaging projections and engaging holes provided thereto. CONSTITUTION:A packing case 1, cushioning materials 2 for packing that are provided to each of corners of an article 9 to be packed and inserted into the packing case 1 together with the article 9 to be packed, and a pressing cover 3 for pressing the article 9 to be packed are prepared. Each of the cushioning materials 2 for packing is in such structure that can be built up, out of single-sheet corrugated board paper in the unfolded state having at least a bottom part and laterals on the right and the left that are connected through creases to the bottom part, by bending the laterals on the right and the left along the creases against the bottom part. The pressing cover 3 is in a structure wherein bending pieces 38, equipped with engaging projection at their front ends with creases provided thereto, are formed out of corrugated board paper on which engaging holes are provided, and spacers S doubling as cushioning parts are built by bending the bending pieces 38 into chevroned shape at their creases and by putting the engaging projections into the engaging holes for engagement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packing structure used for packing objects to be packed such as electric equipment.

[0002]

2. Description of the Related Art The role of packaging material ends as soon as the product reaches the user. For users, the packaging material is
The image of "bulky garbage" is strong. In addition, in recent years, from the viewpoint of environmental problems, the legal tightening of packaging materials has become strict.

One of the basic policies for reducing the amount of dust emitted from packaging materials is to use recyclable materials.

In the conventional packing structure of this type, as shown in FIG. 45, a packing box 80 and a packing box 80 are provided at each corner of a packing object 81 together with the packing object 81. A cushioning material 82 for packing which is inserted into the packing box 81 and is in contact with the object to be packed 81 and the inner wall portion of the packing box body 80, and a holding lid body 83 which is inserted into the packing box body 80 and holds the article to be packed 81. I have something to prepare.

In such a packing structure, a packing cushioning material made of styrofoam is used as the packing cushioning material 82, and the pressing lid 83 has a base 84 made of corrugated cardboard and a spacer made of styrofoam. The one to which 85 was adhered was used.

[0006]

As described above, in the conventional packing structure, the packing cushioning material 8 made of expanded polystyrene is used.
2 is used, and the pressing lid 83 has a spacer 85 made of expanded polystyrene.

Since this styrofoam is a resin, the furnace is damaged when it is incinerated, and it is bulky and difficult to reclaim. In addition, it may be crushed and used as a building material, or may be returned to polystyrene (PS) resin and then used as an injection molded product such as a cassette tape or a toy, but at present, this recycling is costly. Have a
There was an urgent need for the appearance of a packaging structure that does not damage the furnace even if it is incinerated, is not bulky, and can be easily recycled.

The present invention has been made in view of the above circumstances, and a first object of the present invention is that it is bulky even if a large number of packing cushioning materials, holding lids and packing boxes are stacked. Without the need for a large storage space,
It is to provide a packaging structure that facilitates transportation.

A second object of the present invention is to provide an environmentally friendly packaging structure which not only allows incineration after use but also facilitates recycling.

[0010]

In order to achieve the above first object, the present invention provides a packaging box and a package provided at each corner of the package to be packaged together with the package. A packing cushioning material that is inserted into the box body and contacts the object to be packed and the inner wall of the packing box body, and a holding lid body that is inserted into the packing box body and presses the object to be packed. From the unfolded state in which the left side surface portion and the right side surface portion of the cushioning material are connected to at least the bottom surface portion via the folding line portion, the left side surface portion and the right side surface portion are respectively folded line portions to the bottom surface portion. In a structure for folding and assembling, the pressing lid body is formed by bending a piece of material of one piece having an engaging projection portion at the tip and a folding line on the bending piece, and forming an engaging hole portion in the material. The bent piece is bent into a mountain shape at the fold line and the engaging protrusion is engaged with the engaging hole to loosen it. Wherein the part has a structure of assembling a spacer serving as a.

In order to achieve the above-mentioned second object, the present invention uses corrugated cardboard for each of the packing cushioning material and the holding lid in the packing structure according to the first aspect of the present invention.

[0012]

With such a construction, the packing cushioning material is assembled by folding the left side surface portion and the right side surface portion at the folding line portion with respect to the bottom portion from the unfolded state, and in the pressing lid body,
Assembling the spacer by bending the bending piece into a mountain shape at the folding line portion and engaging the engaging projection with the engaging hole, and applying the packing cushioning material to each corner of the article to be packed, This is inserted into the packing box body, a pressing lid is placed above the article to be packed, and the packing box body is closed.

The packing cushioning material has a developed shape in which a left side surface portion and a right side surface portion are connected from at least a bottom surface portion to a bottom surface portion through a folding line portion, and the pressing lid body is A bent piece having an engaging protrusion on the front end of a single piece of material and a folding piece formed on this bent piece, and an engaging hole formed in the material. Since the box itself is foldable, it does not become bulky even if a large number of these cushioning materials for packing, holding lids and packing boxes are stacked, and does not require a wide storage space, and
Easy to carry.

Further, by using corrugated paper as the material for the packing cushioning material and the pressing lid body, not only can they be incinerated after use, but they can be easily recycled.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a packaging structure according to the present invention. This packing structure includes a packing box body 1, a plurality of packing cushioning materials 2, and a holding lid body 3.

The packaging box 1 is a commonly used corrugated cardboard box, and has left and right side surfaces 4 and 5 and front and rear side surfaces 6 and 7.
And a bottom face 8, and the left and right side faces 4 and 5 and the front and rear side faces 6 and 7 have foldable lid pieces 4 at the respective upper edge portions.
a, 5a, 6a, 7a are provided, and these lid pieces 4a, 5a
The opening 1a is opened and closed by a, 6a and 7a.

The packing cushioning material 2 is a so-called corner pad, and is applied to each corner of the article 9 to be packed. The packing cushioning material 2 is made of corrugated paperboard 10. This corrugated paper 10 is shown in FIG.
As shown in (1) and (2), the corrugated sheet core material 13 is interposed between the double flute 11 and the inner craft runner 12 to bond them, and the inner craft runner 12 and the outer craft runner 14 are bonded to each other. The corrugated sheet core material 15 is interposed and these are bonded together, and the double flute 11, the corrugated sheet core material 13, and the inner craft runner 12 form an A flute 100. The plate core material 15 and the outer craft runner 14 form a B flute 200. In this case, the height of the corrugated sheet core material 13 of the A flute 100 is equal to the height of the corrugated sheet core material 15 of the B flute 200.
The height of the A flute 100 is larger than that of the B flute 200, and the A flute 100 is softer than the B flute 200.

The cushioning material 2 for packing is the corrugated cardboard paper 1
It is formed by cutting 0 by a cutting machine, shaping it, and folding and assembling it. A cutting die 16 shown in FIGS. 3 and 4 is used for this molding. The cutting die 16 is provided with a base 17, a cutting blade 18 is attached to the surface of the base 17 in a state where the packing cushioning material 2 is expanded, and the surface of the base 17 is Forming blades 20 that form the folding line portions 19 in the expanded form 300 of the packing cushioning material 2 are attached. The forming blade 20 has a height slightly lower than that of the cutting blade 18, and is for forming a so-called half punch in which the double flute 11 on the outer side of the corrugated paperboard 10 remains uncut after cutting. .

The packing cushioning material 2 includes various types such as single-folding, double-folding, triple-folding, double-layering and triple-layering. The double-fold packaging cushioning material 2 will be described below, and the single-folding, triple-folding, double-layering, and triple-layering packaging cushioning material 2 will be described later.

With respect to the double-folded cushioning material 2 for packing, the expanding die 300 is cut by the cutting machine. This cutting is
As shown in FIG. 5, the cutting die 16 is placed on the table of the cutting machine.
And put the corrugated paper 10 on the cutting mold 16.
The A flute 100 is placed upside down, the pressing plate 21 is pressed by a press, the cutting blade 18 of the cutting die 16 performs patterning, and the forming blade 20 forms the folding line portion 19. The folding line portion 19 is formed by the double flute 11. Figure 6
1 shows the corrugated cardboard paper 10 after having been shaped by the two cutting dies 16.

In the packing cushioning material 2 cut as described above, if the lower left of the development die 300 is the front Y and the upper right is the rear Z, as shown in FIG. Surface portion 22, a second surface portion 23 continuous to the front edge portion of the first surface portion 22 via a first folding line portion 19a, and the first surface portion 2
The third surface portion 24 connected to the left rear edge portion of 2 via the second fold line portion 19b and the fourth surface portion connected to the right rear edge portion of the first surface portion 22 via the third fold line portion 19c. The surface portion 25, a fifth surface portion 26 which is continuous with the left rear edge portion of the third surface portion 24 via the fourth folding line portion 19d, and the fifth folding line portion at the right rear edge portion of the fourth surface portion 25. And a sixth surface portion 27 continuous with each other through 19e, and a V-shaped notch centered around the fourth folding line portion 19d at the outer edge of each of the third surface portion 24 and the fifth surface portion 26. A portion 28 is formed, and a V-shaped notch 29 centered on the fifth fold line portion 19e is formed on the outer edge of each of the fourth surface portion 25 and the sixth surface portion 27. There is.

An engaging projection 30 is formed on the left front edge of the second surface 23, an engaging recess 31 is formed on the right front edge, and a rear right portion of the third surface 24 is formed. Two engaging recesses 32 are formed on the edge portion, and two engaging protrusions 33 are formed on the left rear edge portion of the fourth surface portion 25, respectively.
An engaging recess 34 is formed on the left rear edge of the fifth surface 26, and an engaging protrusion 35 is formed on the right rear edge of the sixth surface 27.

The expanded shape 300 of the packing cushioning material 2 formed as described above is folded as shown in FIGS. 8 (1) and 8 (2) to form the packing cushioning material 2 shown in FIG. 8 (3). Finished product 36
Is made. That is, the second surface portion 23 is folded along the front side folding line portion 19a as indicated by the arrow and overlapped with the first surface portion 22, and the fifth surface portion 26 is indicated as the arrow by the fourth folding line portion 19a.
Folded at d and stacked on the third surface portion 24, the sixth surface portion 27
Is folded at the fifth fold line portion 19e as shown by the arrow, and the
On the surface 25 of the.

Next, the fifth and third surface portions 2 which are overlapped with each other.
6 and 24 are folded along the second fold line portion 19b as shown by arrows, the engaging projections 30 are engaged with the engaging recesses 34, and the overlapped sixth and fourth surface portions 27, 25 are shown by arrows. In the third
Folding line portion 19c of the
5 is engaged, and the engagement protrusion 33 is engaged with the engagement recess 32 to obtain a finished product 36 of the packaging cushioning material 2.

In this case, as shown in FIG. 9, in the bottom surface portion D, the left side surface portion E and the right side surface portion F of the finished product 36, the B flute 200 of the corrugated paperboard 10 is located on the front side surface thereof, and the A flute 100 is inside. Is located. B flute 2
00 is harder than A flute 100, and A flute 10
Since 0 is excellent in cushioning property (cushioning property), when the B flute 200 comes into contact with the inner surfaces of the article to be packed 9 and the packing box 1, the load is received by the entire surface, and the internal A The load is transmitted to the entire flute 100, and good cushioning property is obtained.

The holding lid 3 is a so-called top pad, and as shown in FIGS. 10 and 11, the packing box 1 is provided.
A lid main body 37 made of corrugated cardboard paper 10 matching the shape of the opening 1a is provided, and a plurality of bent pieces 38 are formed by notches 39 on the surface portion of the lid main body 37. These bent pieces 38 are cantilever pieces, each of which is provided with an engagement protrusion 40 at its tip portion, and fold lines 41 and 42 are formed at the base portion and the intermediate portion thereof. In addition, an engaging hole portion 43 is formed on the surface portion of the lid main body 37 so as to be positioned on the base side of the bending piece 38.
And a notch 44 is formed at one end of the lid body 37.

The outer shape of the lid main body 37, the bent piece 38, the folding lines 41 and 42 of the bent piece 38, the engaging hole portion 43 and the notch portion 44 are formed at one time by a cutting machine, and are folded. The lines 41 and 42 are formed by crushing the corrugated paperboard 10 into a linear shape.

Then, the bending piece 38 is bent upward along the folding line 41 and downwards along the folding line 42 to form the bending piece 38 into a mountain shape, and the engaging projection 40 is formed into the engaging hole portion. Each bent piece 38 is engaged with 44 to form a spacer S which also serves as a buffer portion.

Next, the packing of the article 9 to be packed will be described using the packing box 1, the packing cushioning material 2 and the holding lid 3 configured as described above.

First, as shown in FIG. 1, the packing cushioning material 2 is applied to each corner portion of the article 9 to be packed, and the packing cushioning material 2 is inserted into the packing box body 1 and then the holding lid. The body 3 is inserted into the packing box body 1, and the cords 45 connected to the article 9 to be packed are led out from the cutout portion 44 of the holding lid body 3 onto the holding lid body 3 and the cords 45 are attached. Are positioned between the spacers S. Then, the lid pieces 4a, 5a of the packing box body 1,
The opening 1a is closed with 6a and 7a. In this case, the lid piece 4
The inner surface portions of a, 5a, 6a and 7a are in contact with the upper end portion of the spacer S.

Next, a modified example of the packaging structure according to the present invention will be described with reference to FIGS.

FIG. 12 is an exploded perspective view of the second packaging structure according to the present invention. This packing structure has an inclined surface 9
The present invention is applied to the case of packing an object to be packed 9'having a rectangular parallelepiped shape, which has a rectangular shape of 1, and is applied to the four corners of the bottom surface of the packing box 1 and the object to be packed 9 '. It is provided with four packing cushioning materials 2 and a holding lid body 3.

The packing of the object to be packed 9'will be described below.
First, as shown in FIG. 12, the cushioning material 2 for packing is applied to the four corners of the bottom surface of the object to be packed 9 ′, the packing cushioning material 2 is inserted into the packing box body 1, and then the holding lid body 3 is packed. While being inserted into the box body 1, the cords 45 connected to the article 9'to be packed are led out from the notch portion 44 of the holding lid body 3 onto the holding lid body 3,
The cords 45 are located between the spacers S. Then, the opening 1 is formed by the lid pieces 4a, 5a, 6a, 7a of the packaging box 1.
Close a. In this case, the lid pieces 4a, 5a, 6a, 7a
The inner surface of the spacer contacts the upper end of the spacer S.

FIG. 13 is an exploded perspective view of the third packing structure according to the present invention. This packing structure includes a packing box 1 and a plurality of packing cushioning materials 2.

The packing of the article to be packed 9 will be described below. First, as shown in FIG. 13, the cushioning material 2 for packing is applied to each corner of the article 9 to be packed, and the packing cushioning material 2 is placed inside the packing box 1. To insert.
Next, the cords 45 connected to the object to be packed 9 are inserted between the right side surface of the object to be packed 9 and the right side surface 5 of the packaging box 1 or led out on the object to be packed 9. Then, the cords 45 are positioned in the space portion. Then, the opening 1a is closed by the lid pieces 4a, 5a, 6a, 7a of the packaging box 1. In this case, the inner surface portions of the lid pieces 4a, 5a, 6a, 7a are in contact with the upper surface portions of the packing cushioning material 2 applied to the four corners of the upper surface of the article 9 to be packed.

FIG. 14 shows a cushioning material 2 for double folding.
25 to 25 are modified examples. 14 to 2
In 3, Y indicates the front and Z indicates the rear. 14
The cushioning material 2 for packaging shown in FIG. 1 includes a first surface portion 22, a second surface portion 23 continuous to the front edge portion of the first surface portion 22 via a first folding line portion 19a, and a first surface portion 22. A third surface portion 24 connected to the left rear edge portion via a second folding line portion 19b;
The fourth surface portion 25 connected to the right rear edge portion of the surface portion 22 via the third folding line portion 19c, and the fourth surface portion 25 connected to the left rear edge portion of the third surface portion 24 via the fourth folding line portion 19d. Face part 26 of 5
And a fifth folding line portion 19e on the right rear edge of the fourth surface portion 25.
And a sixth surface portion 27 continuous with the third surface portion 2
V-shaped notches 28 centered on the fourth folding line portion 19d are formed at the outer edge portions of the fourth and fifth surface portions 26, respectively, and the fourth surface portion 25 and the sixth surface portion 26 are formed. A V-shaped notch 29 centered on the fifth fold line portion 19e is formed at the outer edge of each of the surface portions 27.

An engaging projection 30 is formed on the left front edge of the second surface 23, an engaging recess 31 is formed on the right front edge, and the left side of the fifth surface 26 is Engagement recesses 34 and 34a are formed on the right rear edge portion, and engagement protrusions 35 and 35a are formed on the left and right rear edge portions of the sixth surface portion 27, respectively, and the second surface portion 23 is folded forward. Folded by the line portion 19a and stacked on the first surface portion 22, the fifth surface portion 26 is folded by the fourth folding line portion 19d and stacked on the third surface portion 24, and the sixth surface portion 27 is formed by the fifth folded line portion. Fold 19th to 4th
On the surface 25 of the.

Next, the fifth and third surface portions 2 which are overlapped with each other.
6, 24 are folded along the second folding line portion 19b to form the engaging recess 3
The engaging projection 30 is engaged with 4, and the overlapped sixth and fourth surface portions 27 and 25 are folded at the third folding line portion 19c,
The engagement protrusion 35a is engaged with the engagement recess 31 and the engagement protrusion 35 is engaged with the engagement recess 34a to obtain a finished product 36 of the cushioning material 2 for packaging.

The packing cushioning material 2 shown in FIG. 15 has a shape in which the V-shaped notches 28 and 29 of the packing cushioning material 2 shown in FIG. 14 are not formed. This is the same as the case of the cushioning material 2 for packing shown in FIG.

In the packaging cushioning material 2 shown in FIG. 16, the first surface portion 22 and the second surface portion 22 are connected to the front edge portion of the first surface portion 22 via the first fold line portion 19a. The face portion 23,
A third surface portion 24 connected to the left rear edge portion of the first surface portion 22 via a second folding line portion 19b, and a third rear surface edge portion of the first surface portion 22 via a third folding line portion 19c. 4th surface part 2 which continues
5 and the fourth folding line portion 19 at the left front edge of the third surface portion 24.
The fifth surface portion 26 connected via d, the sixth surface portion 27 connected to the right front edge portion of the fourth surface portion 25 via the fifth fold line portion 19e, and the third surface portion 24 5, a V-shaped notch 28 centered on the fourth folding line portion 19d is formed on the outer edge of each of the fifth surface portion 26, and the fourth surface portion 25 and the sixth surface portion 27. A V-shaped notch 29 centered on the fifth fold line portion 19e is formed at each outer edge portion of the.

An engaging projection 30 is formed on the left front edge of the second surface portion 23, and an engaging recess 31 is formed on the right front edge portion of the second surface portion 23. The left and right front edges of the fifth surface portion 26 are respectively formed. Engagement recesses 32 and 32a are formed in the portions, and engagement recesses 33 and 33a are formed in the left and right front edge portions of the fifth surface portion 26, respectively.

Then, the second surface portion 23 is folded along the first folding line portion 19a and overlapped with the first surface portion 22, and the fifth surface portion 26 is folded along the fourth folding line portion 19d and the third surface portion. 24, and the sixth face portion 27 is placed on the fifth fold line portion 19e.
Fold and stack on the fourth surface 25. Next, the overlapped fifth and third surface portions 26 and 24 are connected to the second folding line portion 1.
9b, the engaging projection 30 is engaged with the engaging recess 32a, and the overlapped sixth and fourth surface portions 27 and 25 are moved to the third position.
Folding line portion 19c of the
3 is engaged, and the engaging projection 33a is engaged with the engaging recess 32.
To obtain a finished product 36 of the cushioning material 2 for packaging.

The packing cushioning material 2 shown in FIG. 17 has a first surface portion 22 and a second surface portion 23 which is continuous with the left front edge portion of the first surface portion 22 via a first fold line portion 19a. A third fold line 24 connected to the left rear edge of the first face 22 via a second fold line 19b, and a third fold line 19c at the right rear edge of the first face 22. And a fourth surface portion 25 that is continuous,
A fifth surface portion 26 that is continuous with the left rear edge portion of the third surface portion 24 via a fourth folding line portion 19d, and a fifth rear surface edge portion of the fourth surface portion 25 with a fifth folding line portion 19e. 6th surface part 2 which continues
7 and V around the first fold line portion 19a at the outer edge portions of the first surface portion 22 and the second surface portion 23, respectively.
A V-shaped notch 28a centering on the fourth fold line 19d is formed at the outer edge of each of the third surface 24 and the fifth surface 26. V-shaped notches 29 centered on the fifth fold line portion 19e are formed at the outer edge portions of the fourth surface portion 25 and the sixth surface portion 27, respectively.

An engaging concave portion 31 is formed on the left front edge portion of the second surface portion 23, and an engaging projection 30 is formed on the left rear edge portion thereof, and the left rear edge portion of the fifth surface portion 26 is formed. Engaging recesses 32 and 32a are formed in the left and right rear edge portions, respectively, and the engaging protrusion 33 is provided on the left rear edge portion of the sixth surface portion 27.
However, engaging projections 33a are formed on the right rear edge of the sixth surface portion 27, respectively.

Then, the second surface portion 23 is folded at the first folding line portion 19a and overlapped with the first surface portion 22, and the fifth surface portion 26 is folded at the fourth folding line portion 19d and the third surface portion 2 is formed.
4, the sixth surface portion 27 is folded along the fifth fold line portion 19e, and is stacked on the fourth surface portion 25. Next, the overlapped fifth and third surface portions 26 and 24 are connected to the second folding line portion 19b.
The engaging projection 30 is engaged with the engaging concave portion 32, the overlapping sixth and fourth surface portions 27 and 25 are folded along the third folding line portion 19c, and the engaging concave portion 31 is engaged. The completed protrusion 36 of the cushioning material 2 for packaging is obtained by engaging the protrusion 33a and the engaging protrusion 33 in the engaging recess 32a.

The packing cushioning material 2 shown in FIG. 18 has a first surface portion 22 and a second surface portion 23 which is continuous with the right front edge of the first surface portion 22 via a first fold line portion 19a. A third fold line 24 connected to the left rear edge of the first face 22 via a second fold line 19b, and a third fold line 19c at the right rear edge of the first face 22. And a fourth surface portion 25 that is continuous,
A fifth surface portion 26 connected to the right rear edge portion of the third surface portion 24 via a fourth folding line portion 19d, and a fifth rear surface edge portion of the fourth surface portion 25 via a fifth folding line portion 19e. 6th surface part 2 which continues
7 and V around the fifth fold line portion 19a at the outer edge portions of the first surface portion 22 and the second surface portion 23, respectively.
A V-shaped notch 28a centering on the fourth fold line 19d is formed at the outer edge of each of the third surface 24 and the fifth surface 26. Further, a V-shaped notch 29 centered on the fifth fold line portion 19e is formed at the outer edge of each of the fourth surface portion 25 and the sixth surface portion 27.

The engaging projection 3 is provided on the right front edge of the second surface portion 23.
0, the engaging recess 31 is formed in the right rear edge portion, and the engaging recesses 32, 32a are formed in the left and right rear edge portions of the fifth surface portion 26, respectively. 6 face portion 27
Engaging projections 33 and 33a are formed on the left and right rear edge portions of, respectively.

Then, the second surface portion 23 is folded at the first folding line portion 19a and overlapped with the first surface portion 22, and the fifth surface portion 26 is folded at the fourth folding line portion 19d and the third surface portion 2 is folded.
4, the sixth surface portion 27 is folded along the fifth fold line portion 19e, and is stacked on the fourth surface portion 25. Next, the overlapped fifth and third surface portions 26 and 24 are connected to the second folding line portion 19b.
The engaging projection 30 is engaged with the engaging concave portion 32, the overlapping sixth and fourth surface portions 27 and 25 are folded along the third folding line portion 19c, and the engaging concave portion 31 is engaged. The completed protrusion 36 of the cushioning material 2 for packaging is obtained by engaging the protrusion 33a and the engaging protrusion 33 in the engaging recess 32a.

The packing cushioning material 2 shown in FIG. 19 has a first surface portion 22 and a second surface portion 23 which is continuous with the front edge of the first surface portion 22 via a first fold line portion 19a. , A third surface 24 connected to the left rear edge of the first surface 22 via the second folding line portion 19b, and a third rear surface of the first surface 22 at the right rear edge.
Of the fourth surface portion 25 connected to the fourth surface portion 25 via the fold line portion 19c, the fifth surface portion 26 connected to the right front edge portion of the third surface portion 24 via the fourth fold line portion 19d, and the fourth surface portion 25 A sixth surface portion 27 that is continuous with the left front edge portion through a fifth folding line portion 19e.
And have.

An engaging projection 30 is formed on the right front edge portion of the second surface portion 23, and an engaging recess 31 is formed on the right front edge portion of the second surface portion 23. Engagement recesses 32 and 32a are formed in the right front edge portion, and engagement protrusions 33 and 33a are formed in the left front edge portion and the right front edge portion of the sixth surface portion 27.

Then, the second surface portion 23 is folded at the first folding line portion 19a and overlapped with the first surface portion 22, and the fifth surface portion 26 is folded at the fourth folding line portion 19d and the third surface portion 2 is formed.
4, the sixth surface portion 27 is folded along the fifth fold line portion 19e, and is stacked on the fourth surface portion 25. Next, the overlapped fifth and third surface portions 26 and 24 are connected to the second folding line portion 19b.
The engaging projection 30 is engaged with the engaging concave portion 32, the overlapping sixth and fourth surface portions 27 and 25 are folded along the third folding line portion 19c, and the engaging concave portion 31 is engaged. The protrusion 33 is engaged and the engagement protrusion 33a is engaged with the engagement recess 32a to obtain a finished product 36 of the cushioning material 2 for packaging.

The packing cushioning material 2 shown in FIG. 20 includes a first surface portion 22 and a second surface portion 23 which is continuous with the left front edge portion of the first surface portion 22 via a first fold line portion 19a. A third fold line 24 connected to the left rear edge of the first face 22 via a second fold line 19b, and a third fold line 19c at the right rear edge of the first face 22. And a fourth surface portion 25 that is continuous,
A fifth surface portion 26 that is continuous with the left rear edge portion of the third surface portion 24 via a fourth folding line portion 19d, and a fifth rear surface edge portion of the fourth surface portion 25 with a fifth folding line portion 19e. 6th surface part 2 which continues
7 and 7. An engaging recess 32 is formed on the right rear edge of the fifth surface 26, and an engaging protrusion 33 is formed on the right rear edge of the sixth surface 27.

Then, the second surface portion 23 is folded along the first folding line portion 19a to overlap the first surface portion 22, and the fifth surface portion 26 is folded along the fourth folding line portion 19d to form the third surface portion. 24, and the sixth face portion 27 is placed on the fifth fold line portion 19e.
Fold and stack on the fourth surface 25. Next, the overlapped fifth and third surface portions 26 and 24 are connected to the second folding line portion 1.
The sixth and fourth surface portions 27, 2 folded and superposed on 9b.
5 is folded along the third folding line portion 19c, and the engaging projections 33 are engaged with the engaging recesses 32 to obtain a finished product 36 of the cushioning material 2 for packaging.

In the packing cushioning material 2 shown in FIG. 21, the first surface portion 22, the second surface portion 23 and the third surface portion 2 are used.
4, the fourth surface portion 25, the fifth surface portion 26, and the sixth surface portion 27 have the same arrangement as that of the packing cushioning material 2 shown in FIG. 20, but the number and forming position of the engaging projections and the engaging recesses are different. It is different.

That is, the engaging concave portion 31 is formed on the left front edge portion of the second surface portion 23, and the engaging projection 30 is formed on the left rear edge portion thereof, and the right rear edge portion of the third surface portion 24 is formed. Engaging recesses 32b are formed in the portions, and engaging recesses 32, 32a are formed in the left rear edge portion and the right rear edge portion of the fifth surface portion 26, and the left rear portion of the fourth surface portion 25 is formed. Engagement protrusions 33b are formed on the edge portions, and engagement protrusions 33, 33a are formed on the left and right rear edge portions of the sixth surface portion 27.

Then, the second surface portion 23 is folded along the first folding line portion 19a and overlapped with the first surface portion 22, and the fifth surface portion 26 is folded along the fourth folding line portion 19d to form the third surface portion. 24, and the sixth face portion 27 is placed on the fifth fold line portion 19e.
Fold and stack on the fourth surface 25. Next, the overlapped fifth and third surface portions 26 and 24 are connected to the second folding line portion 1.
9b, the engaging projection 30 is engaged with the engaging concave portion 32, and the sixth and fourth surface portions 27 and 25 that are overlapped with each other are brought to the third position.
Folding line portion 19c of the
3a is engaged and the engaging projection 33 is engaged with the engaging recess 32.
The a is engaged with the engaging projection 33b and the engaging recess 32b, respectively, to obtain a finished product 36 of the cushioning material 2 for packaging.

In the packing cushioning material 2 shown in FIG. 22, the first surface portion 22, the second surface portion 23 and the third surface portion 2 are used.
4, the fourth surface portion 25, the fifth surface portion 26, and the sixth surface portion 27 have the same arrangement as that of the packing cushioning material 2 shown in FIG. 20, but the number and forming position of the engaging projections and the engaging recesses are different. It is different.

That is, the two engaging recesses 31 are formed in the left front edge portion of the second surface portion 23, and the two engaging projections 30 are formed in the left rear edge portion, respectively. Two engaging recesses 32, 32a are provided at the left rear edge and the right rear edge of the surface portion 26.
Is formed, and two engaging protrusions 33, 33a are formed on the left and right rear edge portions of the sixth surface portion 27.

Then, the second surface portion 23 is folded at the first folding line portion 19a and overlapped with the first surface portion 22, and the fifth surface portion 26 is folded at the fourth folding line portion 19d and the third surface portion 2 is folded.
4, the sixth surface portion 27 is folded along the fifth fold line portion 19e, and is stacked on the fourth surface portion 25. Next, the overlapped fifth and third surface portions 26 and 24 are connected to the second folding line portion 19b.
The engaging projection 30 is engaged with the engaging concave portion 32, the overlapping sixth and fourth surface portions 27 and 25 are folded along the third folding line portion 19c, and the engaging concave portion 31 is engaged. The completed protrusion 36 of the cushioning material 2 for packaging is obtained by engaging the protrusion 33a and the engaging protrusion 33 in the engaging recess 32a.

The packing cushioning material 2 shown in FIG. 23 includes a first surface portion 22 and a second surface portion 23 which is continuous with the right front edge portion of the first surface portion 22 via a first fold line portion 19a. , A third surface 24 connected to the right rear edge of the first surface 22 via a second folding line 19b, and a third folding line 19c at the left rear edge of the first surface 22. And a fourth surface portion 25 that is continuous,
A fifth front face portion 26 is connected to the left front edge portion of the third face portion 24 via a fourth fold line portion 19d, and is connected to a right rear edge portion of the fourth face portion 25 via a fifth fold line portion 19e. Sixth face 2
7 and 7.

An engaging recess 31 is formed on the left front edge of the second surface 23, an engaging recess 30a is formed on the right rear edge thereof, and a right front edge of the fifth surface 26 is formed. Engagement projections 30 and engagement recesses 31a are formed on the left front edge. An engaging recess 34 is formed on the left rear edge of the sixth surface 27, and an engaging protrusion 33 is formed on the right front edge of the sixth surface 27.

Then, as shown in FIG. 24, the second surface portion 2
3 is folded along the first folding line portion 19a to form the first face portion 22.
, The fifth surface portion 26 is folded at the fourth folding line portion 19d and overlapped with the third surface portion 24, and the sixth surface portion 27 is folded at the fifth folding line portion 19e and overlapped with the fourth surface portion 25. .
Next, the overlapped fifth and third surface portions 26 and 24 are folded at the second folding line portion 19b, and the overlapped sixth and fourth portions are formed.
The surface portions 27 and 25 of the fold line are folded along the third fold line portion 19c to engage the engagement protrusion 33 with the engagement recess 31, the engagement protrusion 30 with the engagement recess 34, and the engagement recess 31a. The engaging projections 30a are engaged with each other to obtain a finished product 36 of the cushioning material 2 for packing shown in FIG.

Further, in the packing cushioning material 2 shown in FIG. 23, the engagement recesses 31, 31a, 34 are shown in plan view in FIG.
As shown in FIG. 6, it has a trapezoidal shape, and these engaging concave portions 31, 31
The engagement protrusions 33, 30a, 30 with which the a, 34 engage may have an inverted trapezoidal planar shape. In this case, the engaging recess 31,
The dimension L1 of the short side portion 80 of the reference numerals 31a and 34 and the engagement protrusion 33,
The dimension L2 of the short side portion 81 of 30a, 30 is the same. Then, the engaging projections 3 are formed in the engaging concave portions 31, 31a, 34.
When the three, 30a, 30 intersect at right angles and are engaged with each other, the short side parts 80, 81 are aligned with each other, and the engaging protrusions 33, 30a30
The acute-angled portions 82 are caught on the lower edges of the left and right side portions 83, 84 of the engaging recesses 31, 31a, 34 to ensure the engagement.

Further, as shown in FIG. 27, the engaging recesses 31, 31a, 34 are formed in a quadrangular shape in plan view, and triangular protrusions 87, 88 are formed on the left and right sides 85, 86, respectively. The engaging projections 33, 30a, 34 with which the engaging recesses 31, 31a, 34 are engaged have a quadrangular planar shape of the engaging projections 33, 30a, 30 and triangular projections 91, 92 on the left and right sides 89, 90 thereof.
You may make it the shape which formed. Then, the engaging recess 31,
When the engaging protrusions 33, 30a, 30 are engaged with the engaging protrusions 33, 30a, 30 at right angles, the protrusions 87, 88 of the engaging recesses 31, 31a, 34 are located on the left side of the engaging protrusions 33, 30a, 30, The right side portions 89, 90 bite into the A flute 100, and the convex portions 91, 92 of the engaging protrusions 33, 30a, 30 are engaged with the engaging concave portion 3.
The left and right side portions 1, 31a, 34 of the right flutes 85, 86 bite into the A flute 100 to ensure the engagement.

Further, as shown in FIG. 28, the engaging recesses 31, 31a, 34 are formed in a quadrangular shape in plan view, and corrugated portions 93 are formed on the left and right sides 85, 86 of the engaging recesses. Engagement projections 33, 31, 31a, 34 engaging with each other,
The planar shape of 30a, 30 may be rectangular, and the corrugated portion 94 may be formed on the left and right sides 89, 90 thereof. Then, the engaging projections 33, 30 are fitted in the engaging recesses 31, 31a, 34.
When a and 30 are crossed at right angles and engaged, the engaging recess 3
The wavy portions 93 of the reference numerals 1, 31a and 34 are engaged with the engagement protrusions 33 and 30.
It engages with the corrugated portions 94 of the left and right side portions 89, 90 of a, 30 to ensure the engagement.

Further, as shown in FIG. 29, the engaging recesses 31, 31a, 34 are formed in a quadrangular shape in plan view, and sawtooth portions 95 are formed on the left and right side portions 85, 86 of the engaging recesses 31, 31a, 34, respectively. Engagement protrusion 3 with which the recesses 31, 31a, 34 engage
Alternatively, the saw-toothed portions 96 may be formed on the left and right side portions 89 and 90 of the three-dimensional shape of the three-dimensional shape. Then, the engaging projections 3 are formed in the engaging concave portions 31, 31a, 34.
When the three, 30a, 30 are crossed and engaged at a right angle, the serrated portions 95 of the engaging recesses 31, 31a, 34 are engaged with each other by the engaging protrusions 3.
3, 30a, 30 left and right sides 89, 90 of serrated portions 9
6 dig in to ensure its engagement.

The engaging recesses 31, 31a and 34 and the engaging protrusions 33 and 30 shown in FIGS. 26, 27, 28 and 29 are shown.
The shapes of a and 30 are not limited to other double-fold packaging cushioning materials 2 but also triple-folding and single-folding packaging cushioning materials 2 described later.
It is applied to the engaging concave portion and the engaging protrusion.

The cushioning material 2 for triple folding is shown in FIGS. 30 to 33. 30 and 33, Y indicates the front,
Z indicates the rear. The packing cushioning material 2 has a first surface portion 22 and a first surface portion 22 as shown in the expanded shape.
To the left front edge portion of the first surface portion 22 via the first and sixth folding line portions 19a and 19f, and to the left rear edge portion of the first surface portion 22 via the second folding line portion 19b. Third surface part 2
4 and the third folding line portion 19 at the right rear edge of the first surface portion 22.
A fourth surface portion 25 connected through c, a fifth surface portion 26 connected to the left rear edge portion of the third surface portion 24 through fourth and seventh folding line portions 19d and 19g, and a fourth surface portion. A sixth surface portion 27 that is continuous with the right rear edge portion of 25 through fifth and eighth folding line portions 19e and 19h, and a ninth folding line portion 19i at the right front edge portion of the second surface portion 23. The seventh surface portion 36, which is continuous, and the fifth
The eighth surface portion 37 connected to the left front edge portion of the surface portion 26 via the tenth fold line portion 19j, and the ninth surface portion connected to the right front edge portion of the sixth surface portion 27 via the eleventh fold line portion 19k. Face 3
8 and.

Then, the third surface portion 24 and the fifth surface portion 26
A notch 39 is formed at each of the edges of the first and eighth surface portions 37, and the side 39 a and the side 3 are provided at the notch 39.
9b has a V-shape centering on the fourth and seventh folding line portions 19d and 19g, and sides 39b and 39c have a V-shape centering on the ninth folding line portion 19i. ing. Further, notches 40 are formed at the respective edges of the fourth face portion 25, the sixth face portion 27, and the ninth face portion 38, and in the notch portion 40, the side 40a and the side 40b are the fifth. , V-shape centering on the eighth fold line portions 19e, 19h, and the side 4
0b and the side 40c form a V shape centering on the eleventh fold line portion 19k. Further, a notch 41 is formed at each edge of the first face 22, the second face 23, and the seventh face 36, and a side 41 is formed in the notch 41.
a and the side 41b are the first and sixth folding line portions 19a and 19f.
Is formed in the center, and the sides 41b and 41c are formed in the V shape centered on the ninth folding line portion 19i.

An engaging recess 48 is formed on the left front edge portion of the second surface portion 23, and an engaging protrusion 49 is formed on the left rear edge portion of the second surface portion 23. The engaging protrusion 49 is formed on the left rear edge portion of the third surface portion 24. Is the engaging recess 50
Is formed, and the engaging projection 51 is formed on the left rear edge portion of the fourth surface portion 25, and the engaging concave portions 52 and 53 are formed on the left and right rear edge portions of the fifth surface portion 26, respectively. Formed and sixth
The engaging projections 54, respectively on the left and right rear edge portions of the surface portion 27 of
55 is formed. Further, an engaging concave portion 56 is formed on the left front edge portion of the seventh surface portion 36, and an engaging projection 57 is formed on the right front edge portion thereof, and the left front edge portion and the left rear edge portion of the eighth surface portion 37 are formed. Have engaging recesses 58, 59 formed therein, and engaging protrusions 60, 60 are formed on the right front edge and the right rear edge of the ninth surface portion 38, respectively.
61 is formed.

The expanded shape 300 of the packing cushioning material 2 formed as described above is folded as shown in FIGS. 31, 32 (1) and 32 (2) to be packed as shown in FIG. 32 (3). Material 2
The finished product 62 is manufactured.

That is, the seventh surface portion 36 is folded along the ninth folding line portion 19i as shown by the arrow in FIG. 21 and overlapped with the second surface portion 23, and the eighth surface portion 37 is folded in the tenth direction as indicated by the arrow. Fold it along the line portion 19j and stack it on the fifth surface portion 26,
The surface portion 38 is folded along the eleventh fold line portion 19k as indicated by the arrow and is overlapped with the sixth surface portion 27.

Next, the second and seventh face portions 2 which are overlapped with each other.
32 and 36 are folded along the sixth and first folding line portions 19f and 19a as shown by arrows in FIG. 32 (1) and overlapped on the first surface portion 22, and the fifth and eighth surface portions 26 and 37 are overlapped. Are folded at the seventh and fourth folding line portions 19g and 19d as indicated by arrows and are overlapped on the third surface portion 24, and the sixth and ninth portions are overlapped.
The surface portions 27, 38 of the are folded at the eighth and fifth folding line portions 19h, 19e as indicated by arrows, and are stacked on the fourth surface portion 25.

Next, the superposed third, eighth, and fifth surface portions 24, 37, and 26 are folded along the second folding line portion 19b as shown by the arrow in FIG. 32 (2), and the superposed fourth portion. ，
The 9th and 6th surface portions 25, 38, 27 are arranged in a third
The engaging recesses 52 and 58 are engaged with the engaging projections 49 and 57, and the engaging recesses 48 and
Engaging engagement projections 55 and 61 with 56, and engaging projections 54 and 6
The finished product 62 of the cushioning material 2 for packing is obtained by engaging 0, 51 with the engaging recesses 53, 59, 50.

A modification of the cushioning material 2 for triple folding is shown in FIG.
3 shows. This packing cushioning material 2 has a first surface portion 22 as shown in its expanded shape and a second surface portion 22 which is continuous with the left front edge portion of the first surface portion 22 via first and sixth folding line portions 19a and 19f. Surface portion 23, a third surface portion 24 connected to the left rear edge portion of the first surface portion 22 via the second folding line portion 19b, and a third folding line at the right rear edge portion of the first surface portion 22. The fourth surface portion 25 connected via the portion 19c and the fifth surface portion 25 connected to the left rear edge portion of the third surface portion 24 via the fourth and seventh folding line portions 19d and 19g.
On the right rear edge of the surface portion 26 of the fourth surface portion 25
Sixth surface portion 2 that is continuous via the folding line portions 19e and 19h
7 and a ninth fold line portion 19 on the right front edge of the second surface portion 23.
The seventh surface portion 36 connected via i and the eighth front surface portion connected to the left front edge portion of the fifth surface portion 26 via the tenth fold line portion 19j.
And a ninth surface portion 38 continuous to the right front edge of the sixth surface portion 27 via the eleventh fold line portion 19k.

An engaging recess 64 is formed on the left front edge of the second surface 23, and an engaging protrusion 65 is formed on the left rear edge of the second surface 23. The engaging projection 65 is formed on the left rear edge of the third surface 24. Is the engaging recess 50
Is formed, an engaging projection 51 is formed on the left rear edge portion of the fourth surface portion 25, and an engaging concave portion 52 is formed on the left rear edge portion and the right rear edge portion of the fifth surface portion 26. 53 is formed, and the engaging projection 5 is formed on the left rear edge and the right rear edge of the sixth surface portion 27.
4, 55 are formed. Further, an engaging concave portion 56 is formed on the left front edge portion of the seventh surface portion 36, and an engaging projection 57 is formed on the right front edge portion thereof, and the left front edge portion and the left rear edge portion of the eighth surface portion 37 are formed. Are formed with engaging recesses 58 and 59, and the engaging protrusion 6 is formed on the right front edge and the right rear edge of the ninth surface portion 38.
0 and 61 are formed.

Then, the seventh surface portion 36 is folded at the ninth folding line portion 19i and overlapped with the second surface portion 23, and the eighth surface portion 37 is folded at the tenth folding line portion 19j and the fifth surface portion 26. And the ninth face portion 38 on the 11th fold line portion 19k
Fold and stack on the sixth face 27.

Next, the second and seventh surface portions 2 which are overlapped with each other.
3, 36 are folded at the 6th and 1st folding line portions 19f and 19a to be overlapped on the 1st surface portion 22, and the 5th and 8th surface portions 26 and 37 which were overlapped are the 7th and 4th folding line portions. 19g, 1
9d is folded and overlapped on the third surface 24, and the overlapped sixth and ninth surface portions 27 and 38 are folded along the eighth and fifth folding line portions 19h and 19e and overlapped on the fourth surface 25.

Next, the overlapped fifth, eighth, and third surface portions 26, 37, and 24 are folded along the second folding line portion 19b, and the overlapped sixth, ninth, and fourth surface portions 27 are formed. Three
8 and 25 are folded along the third folding line portion 19c to form the engaging projection 6
5, 57 engage the engaging recesses 52, 59, engage the engaging recesses 64, 56 with the engaging protrusions 55, 61, and engage the engaging protrusions 54, 60, 51 with the engaging recesses 50, 58, The finished product 62 of the packing cushioning material 2 is obtained by engaging with 53.

FIG. 34 shows the cushioning material 2 for single-fold packaging. This packing cushioning material 2 is, as shown in the developed shape of FIG. 34 (1), a first surface portion 22 and a first rear surface edge portion of the first surface portion 22 which is continuous with a first folding line portion 19a. Face 2 of 2
3 and the second folding line portion 19 on the right rear edge of the first surface portion 22.
It has with the 3rd surface part 24 connected via b, and the engaging recessed part 66 is formed in the 3rd surface part 2 in the right rear edge part of the 2nd surface part 23.
Engagement protrusions 67 are formed at the left rear edge of No. 4 respectively. Further, the corner portions of the first, second and third surface portions 22, 23 and 24 are all cut out to the same size.

Then, the second surface portion 23 is folded along the first folding line portion 19a, the third surface portion 24 is folded along the second folding line portion 19b, and the engaging projection 63 is engaged with the engaging concave portion 62. Together, a finished product 70 of the cushioning material 2 for packing shown in FIG. 34 (2) is obtained. In this case, for example, the first surface portion 22 becomes the bottom surface portion D, the second surface portion 23 becomes the left side surface portion E, and the third surface portion 2
4 is the right side surface part f.

35 to 40 show modified examples of the cushioning material 2 for single-fold packaging. The packing cushioning material 2 shown in FIG. 35 is one in which the outer edge portions of the first, second, and third surface portions 22, 23, 24 are formed in an arc shape, and the packing cushioning material 2 shown in FIG.
Is a linear cutout of only the corner portion of the first surface portion 22, and the packing cushioning material 2 shown in FIG.
Of the first embodiment, the packing cushioning material 2 shown in FIG. 38 has only the corners of the first surface portion 22 formed in a straight line, and the packing cushioning material shown in FIG. The material 2 is formed by forming the first, second and third surface portions 22, 23 and 24 in a quadrangular shape, and the packing cushioning material 2 shown in FIG. 40 is the first, second and third surface portions 22, Each of the packing cushioning materials 2 has an engaging recess 66 at the right rear edge portion of the second surface portion 23, and a third surface portion 24.
Each of which has an engaging projection 66 on the left rear edge thereof, folds the second surface portion 23 at the first fold line portion 19a, and folds the third surface portion 24 at the second fold line portion 19b. The engagement protrusion 67 is engaged with the fitting recess 66 to obtain a finished product 70 of the cushioning material 2 for packaging.

Also, the finished product 70 of the single cushioning material 2 for packing
41 and 42 may be double-layered to form a finished product equivalent to the finished product 36 of the double-folded cushioning material 2 for packaging, or as shown in FIG. The finished product 70 of the cushioning material 2 for packaging may be triple-layered to form a finished product equivalent to the finished product 62 of the cushioning material 2 for triple folding. In this case, the intermediate packing cushioning material 2 is housed inside the outer packing cushioning material 2, and the inner packing cushioning material 2 inside the intermediate packing cushioning material 2 is housed. The packing cushioning material 2, the intermediate packing cushioning material 2, and the inner packing cushioning material 2 are made smaller in this order.

When the finished product 70 of the single packaging cushioning material 2 is doubled to form the finished product 36 of the double-folding packaging cushioning material 2, the finished product of the outer packaging cushioning material 2 is formed. In 70, the B flute 200 is outside and the A flute 100 is inside, and in the finished packing cushioning material 70, the B flute 200 is inside and the A flute 100 is outside. In the case where they are overlapped with each other, the portion in contact with the packaging box body 1 and the portion in contact with the article to be packaged 9 are B flutes 200. This is a single packing cushioning material 2
Cushioning material 2 for triple folding of the finished product 70
The same applies to the finished product 62 of.

Further, as the materials for the packing cushioning material 2 and the holding lid 3, the corrugated cardboard 10 having one A flute 100 and one B flute 200 was used, but as shown in FIG. 10, 10 for A flute 10
A double-layered structure may be used in which it is adhered at the 0 part, or a material other than the corrugated paper 10 such as a nonwoven fabric or a pulp mold may be used.

[0086]

As described above, according to the present invention, the packing box body and the objects to be packed provided at each corner of the packing object are inserted into the packing box body together with the packing object. And a cushioning material for packing that is in contact with the inner wall portion of the packaging box, and a holding lid body that is inserted into the packaging box and presses the object to be packaged. At least the bottom surface portion has a structure in which the left side surface portion and the right side surface portion are connected to each other through the fold line portion, and the left side surface portion and the right side surface portion are respectively folded at the fold line portion with respect to the bottom surface portion, and the pressing lid body is constructed. To
A bent piece having an engaging projection on the tip of a single piece of material and a fold line formed on the bent piece, and an engaging hole portion formed on the material, and the bent piece is formed at the fold line portion. Since the spacer is assembled by bending it into a mountain shape and engaging the engaging protrusion with the engaging hole to also serve as the buffer, the packing cushioning material is expanded from its expanded state to the bottom part. The left side surface and the right side surface are respectively folded at the folding line portion to assemble, and in the pressing lid body, the bending piece is bent at the folding line portion into a mountain shape, and the engaging protrusion is engaged with the engaging hole portion. Assemble the spacer, apply the packing cushioning material to each corner of the item to be packed,
This can be inserted into the packing box body, the pressing lid body can be placed above the object to be packed, and the packing box body can be closed to pack the object to be packed.

Further, the packing cushioning material has a developed shape in which the left side surface portion and the right side surface portion are connected to at least the bottom surface portion through the folding line portion from the material of one piece, and the pressing lid body. Is a bent piece having an engaging projection portion at the front end from the material of one piece and a fold line formed on the bent piece, and an engaging hole portion formed in the material, Since the packing box itself is foldable, it does not become bulky even if a large number of these cushioning materials for the packing, the holding lid and the packing box are stacked, and does not require a large storage space. , Easy to carry.

Further, according to the present invention, in the packaging structure according to claim 1, since corrugated paper is used as the material for the cushioning material for packing and the material for the holding lid, not only can it be incinerated after use, but it can also be recycled. It becomes easy to convert.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a packaging structure according to the present invention.

FIG. 2 (1) is a perspective view of a corrugated paper. (2) is a cross-sectional view of corrugated paper.

FIG. 3 is a perspective view of a cutting type.

FIG. 4 is a sectional view taken along line XX of FIG.

FIG. 5 is an explanatory view of the molding of the cushioning material for packing.

FIG. 6 is a plan view of the corrugated paperboard after the packaging cushioning material has been die-cut.

FIG. 7 is a plan view of a double-folding type packing cushioning material in a developed state.

FIG. 8 (1) is a perspective view of a double-folding type packing cushioning material in a developed state. (2) is a perspective view of the packaging cushioning material in a folded state. (3) is a perspective view from the front of the finished product of the cushioning material for packaging.

FIG. 9 is a front perspective view of a completed product of the double-folding type packaging cushioning material.

FIG. 10 is a plan view of a presser lid.

FIG. 11 is a perspective view of a holding lid.

FIG. 12 is an exploded perspective view of a second packing structure according to the present invention.

FIG. 13 is an exploded perspective view of a third packaging structure according to the present invention.

FIG. 14 is a plan view showing another unfolded cushioning material of a double-folding type in a developed state.

FIG. 15 is a plan view of another expanded cushioning material of a double-folding type in a developed state.

FIG. 16 is a plan view of another expanded cushioning material of the double folding type in a developed state.

FIG. 17 is a plan view showing another unfolded cushioning material for double packing.

FIG. 18 is a plan view of another expanded cushioning material of the double-folding type in a developed state.

FIG. 19 is a plan view showing another unfolded cushioning material for double packing.

FIG. 20 is a plan view of another expanded cushioning material of the double-folding type in a developed state.

FIG. 21 is a plan view showing another unfolded cushioning material for double packing.

FIG. 22 is a plan view showing another developed double-folding type cushioning material for packing.

FIG. 23 is a perspective view of another unfolded double-folding cushioning material for packing.

FIG. 24 is a perspective view of the packaging cushioning material in a folded state.

FIG. 25 is a perspective view from the front of a finished product of the packaging cushioning material.

FIG. 26 is a plan view showing a modification of the shapes of the engaging recess and the engaging protrusion.

FIG. 27 is a plan view showing another modification of the shapes of the engaging recess and the engaging protrusion.

FIG. 28 is a plan view showing another modification of the shapes of the engaging recess and the engaging protrusion.

FIG. 29 is a plan view showing another modification of the shapes of the engaging recess and the engaging protrusion.

FIG. 30 is a plan view showing a developed state of the triple-folding type cushioning material for packing.

FIG. 31 is a perspective view of the packing cushioning material in a developed state.

FIG. 32 (1) is a perspective view showing a state in which the cushioning material for triple-folding packaging is folded once. (2) is a perspective view of the packing cushioning material in a folded state twice. (3) is a perspective view from the front of the finished product of the cushioning material for packaging.

FIG. 33 is a plan view of another expanded cushioning material of triple folding type in a developed state.

FIG. 34 (1) is a perspective view of a single-folding type packing cushioning material in a developed state. (2) is a perspective view from the front of a finished product of the same cushioning material for packaging.

FIG. 35 is a plan view of another unfolded packing cushioning material in a single-folding type in a developed state.

FIG. 36 is a plan view of a developed state of another cushioning material for single-folding packaging.

FIG. 37 is a plan view showing another unfolded cushioning material for packing in a developed state.

FIG. 38 is a plan view showing another unfolded cushioning material for a single-folding type.

FIG. 39 is a plan view of another unfolded cushioning material for packing in a developed state.

FIG. 40 is a plan view showing another unfolded packing cushioning member of a single-folding type.

FIG. 41 is an explanatory diagram showing a double stack of finished products of the single-folding type cushioning material for packaging.

FIG. 42 is a sectional view of a finished product of the packaging cushioning material.

FIG. 43 is an explanatory diagram of triple stacking of finished products of the cushioning material for single-fold type packaging.

FIG. 44 is an explanatory diagram of adhesion of two corrugated paper sheets.

FIG. 45 is a perspective view of a conventional packaging structure in an exploded state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packing box 2 Packing cushioning material 3 Holding lid 9 Object to be packed 10 Corrugated cardboard 19 Folding line section 38 Folding piece 40 Engagement projections 41, 42 Folding line 43 Engagement hole section

Claims (2)

[Claims] 1. A packaging box and a package provided at each corner of the article to be packaged and inserted together with the article to be packaged into the packaging box to form the article to be packaged and the inner wall of the packaging box. A cushioning material for contact with the packing, and a holding lid body that is inserted into the body of the packaging box and presses the object to be packed, and the cushioning material for packing is formed from the material of one sheet through at least the bottom surface portion via the folding line portion. From the unfolded state in which the left side surface portion and the right side surface portion are connected to each other, the left side surface portion and the right side surface portion are respectively folded along the fold line portion with respect to the bottom surface portion to assemble, and the presser lid body is formed from a piece of material to the front portion. A bending piece having an engaging projection portion on its side, and a folding line formed on the bending piece, and an engaging hole portion is formed on the material, and the bending piece is bent into a mountain shape at the folding line portion to engage the projection. The structure in which the spacer is assembled to engage the engaging hole with the buffer and also functions as a cushioning part. Construction. 2. The packing structure according to claim 1, wherein corrugated paper is used as the material of each of the packing cushioning material and the holding lid.