JP6844214B2 - Packing equipment - Google Patents

Description

The present invention relates to a packing device.

In the conventional packing device disclosed in Patent Document 1 below, a grid-like shock absorber in which a plurality of pieces of corrugated cardboard are combined vertically and horizontally is arranged inside a box-shaped carton, and the bottom surface of the packaged object is set. It is supported by a buffer.

Japanese Unexamined Patent Publication No. 2004-217249

The above-mentioned conventional packing device has a problem that the amount of the corrugated cardboard sheet used for forming the buffer is large, and the load on the environment and the cost is large.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a packing device capable of suppressing damage to a packaged object and reducing the amount of corrugated cardboard sheet used.

The packing device according to the present invention includes a first corrugated cardboard sheet and a second corrugated cardboard sheet, and the first corrugated cardboard sheet has a flat portion having an inner wall surface facing the object to be packed and the inner wall surface. It has a projecting portion that projects vertically, and the projecting portion is a portion surrounded by a cut line and a bending line formed in the first corrugated cardboard sheet, and is connected to the flat portion by the folding line. The second corrugated cardboard sheet intersects the protruding portion and is arranged perpendicular to the inner wall surface, and the second corrugated cardboard sheet is sandwiched between the first slits formed in the protruding portion to form the second corrugated cardboard sheet. The protrusion is sandwiched between the second slits, and the longitudinal direction of the flute groove provided in the first corrugated cardboard sheet is the first flute direction, and the longitudinal direction of the flute groove provided in the second corrugated cardboard sheet is the second flute direction. is perpendicular to the first flute direction inner wall surface of the protruding portion, der perpendicular to the second flute direction inner wall surface is, a plurality of score lines are formed in the first cardboard sheet, a plurality of A protrusion is formed using only a part of the cut lines, and the positions of the remaining cut lines among the plurality of cut lines form a flat portion without forming a protrusion. It is a thing.

According to the packing device of the present invention, damage to the packaged object can be suppressed, and the amount of corrugated cardboard sheet used can be reduced.

It is a perspective view which shows the packing apparatus according to Embodiment 1. FIG. FIG. 5 is an exploded perspective view of the packing device according to the first embodiment. It is a perspective view which shows the state before loading the packed object with respect to the packing device by Embodiment 1. FIG. It is a perspective view which shows the example of the packing form using the packing device according to Embodiment 1. FIG. It is a schematic cross-sectional view of the packing form shown in FIG. It is a schematic cross-sectional view which shows the state at the moment when the dropped packing form lands. It is a perspective view which shows the packing device by Embodiment 2. FIG.

Hereinafter, embodiments will be described with reference to the drawings. Common or corresponding elements in the drawings are designated by the same reference numerals to simplify or omit duplicate description. The present disclosure may include any combination of configurable configurations among the configurations described in each of the following embodiments.

Embodiment 1.
FIG. 1 is a perspective view showing a packing device 1 according to the first embodiment. FIG. 2 is an exploded perspective view of the packing device 1 according to the first embodiment. FIG. 3 is a perspective view showing a state before the packed object 100 is placed on the packing device 1 according to the first embodiment. FIG. 4 is a perspective view showing an example of a packing form 200 using the packing device 1 according to the first embodiment. 1 to 4 show a state in which the packing device 1 is placed on a horizontal plane. In the present embodiment, for convenience of explanation, the upper and lower parts are specified with reference to the state in which the packing device 1 is placed on a horizontal plane.

The packaged object 100 to be packed using the packing device 1 may be, for example, an electric device. The packaged object 100 may be, for example, a home electric appliance such as a microwave oven. The packaged object 100 may be a commercial product such as a straight sirocco fan. The packaged object 100 may be a part that constitutes a part of the product. In the following description, for example, situations such as logistics, transportation, and cargo handling are collectively referred to as “logistics”.

As shown in FIG. 2, the packing device 1 includes a first corrugated cardboard sheet 2 and a second corrugated cardboard sheet 3. The first corrugated cardboard sheet 2 includes a flat portion 4 and a protruding portion 5. The protruding portion 5 protrudes from the flat portion 4.

As shown in FIG. 4, the flat portion 4 has an inner wall surface 6 facing the object to be packed 100. In the present embodiment, the flat portion 4 covers the lower surface of the object to be packed 100. That is, the inner wall surface 6 faces the lower surface of the object to be packed 100. The inner wall surface 6 is not in contact with the lower surface of the object to be packed 100. There is a space between the inner wall surface 6 and the lower surface of the object to be packed 100.

As shown in FIG. 2, the protruding portion 5 is formed by bending a portion surrounded by the cut line 7 and the bending line 8 formed on the first corrugated cardboard sheet 2 with respect to the flat portion 4. The protruding portion 5 is connected to the flat portion 4 by a bending line 8. The protruding portion 5 projects perpendicularly to the inner wall surface 6 of the flat portion 4. The protrusion 5 has a tip 5a. The tip 5a is the end opposite to the bending line 8. The tip 5a of the protrusion 5 is parallel to the inner wall surface 6. A first slit 5b is formed in the protruding portion 5. The first slit 5b is a groove-shaped recess or notch. The first slit 5b extends along a direction perpendicular to the inner wall surface 6. The first slit 5b is formed from a position in the middle between the tip 5a and the bending line 8 over the tip 5a. In the present embodiment, two first slits 5b are formed in one protrusion 5.

As shown in FIG. 3, the second corrugated cardboard sheet 3 is arranged so as to intersect the protrusion 5. The second corrugated cardboard sheet 3 is arranged perpendicular to the inner wall surface 6 of the flat portion 4. In the present embodiment, the second corrugated cardboard sheet 3 is orthogonal to the protruding portion 5. The second corrugated cardboard sheet 3 has a first edge 3a and a second edge 3b. The first edge 3a is in contact with the inner wall surface 6. The first edge 3a is parallel to the inner wall surface 6. The second edge 3b is on the opposite side of the first edge 3a. The second edge 3b is parallel to the first edge 3a. In the present embodiment, the distance from the inner wall surface 6 to the second edge 3b of the second corrugated cardboard sheet 3 is equal to the distance from the inner wall surface 6 to the tip 5a of the protruding portion 5. That is, the second edge 3b and the tip 5a are on the same plane.

As shown in FIG. 2, the second slit 3c is formed in the second corrugated cardboard sheet 3. The second slit 3c is a groove-shaped recess or notch. The second slit 3c extends along a direction perpendicular to the inner wall surface 6. The second slit 3c is formed from a position in the middle between the first edge 3a and the second edge 3b over the first edge 3a. In the present embodiment, three second slits 3c are formed in one second corrugated cardboard sheet 3. In the present embodiment, the second corrugated cardboard sheet 3 has a shape whose longitudinal direction is along the first edge 3a and the second edge 3b.

The second corrugated cardboard sheet 3 can be attached to the projecting portion 5 by engaging the first slit 5b of the projecting portion 5 with the second slit 3c of the second corrugated cardboard sheet 3. In the state where the second corrugated cardboard sheet 3 is attached, the second corrugated cardboard sheet 3 is sandwiched between the first slit 5b of the protruding portion 5, and the protruding portion 5 is located in the second slit 3c of the second corrugated cardboard sheet 3. It is sandwiched.

In the present specification, the longitudinal direction of the flute groove included in the first corrugated cardboard sheet 2 is referred to as the "first flute direction". The longitudinal direction of the flute groove included in the second corrugated cardboard sheet 3 is referred to as the "second flute direction". The first flute direction FD1 in the flat portion 4 is the direction shown in FIG. The first flute direction FD2 in the protruding portion 5 is a direction perpendicular to the inner wall surface 6. The second flute direction FD3 is a direction perpendicular to the inner wall surface 6. The bending line 8 extends perpendicular to the first flute direction FD1 of the flat portion 4.

The tip 5a of the protrusion 5 and the second edge 3b of the second corrugated cardboard sheet 3 face the surface of the object to be packed 100. When the packaged object 100 comes into contact with the tip 5a of the projecting portion 5 and the second edge 3b of the second corrugated cardboard sheet 3, the projecting portion 5 and the second corrugated cardboard sheet 3 receive a force from the packaged object 100. At that time, since the second corrugated cardboard sheet 3 is provided, the protruding portion 5 can be reliably maintained in a state perpendicular to the inner wall surface 6. Further, the presence of the protruding portion 5 can ensure that the second corrugated cardboard sheet 3 is kept perpendicular to the inner wall surface 6. Further, the presence of the protruding portion 5 can surely prevent the position of the second corrugated cardboard sheet 3 from shifting in a direction parallel to the inner wall surface 6. From these facts, the protrusion 5 and the second corrugated cardboard sheet 3 can surely receive the force from the packaged object 100.

Generally, when a corrugated sheet receives a compressive force in a direction parallel to its surface, its strength and rigidity against a compressive force in the flute direction is higher than its strength and rigidity against a compressive force in a direction orthogonal to the flute direction. As described above, the compression characteristics of the corrugated cardboard sheet are anisotropic. In the present embodiment, since the first flute direction FD2 of the protruding portion 5 is perpendicular to the inner wall surface 6, the protruding portion 5 can surely receive the force from the packaged object 100. .. Further, since the second flute direction FD3 is perpendicular to the inner wall surface 6, the second corrugated cardboard sheet 3 can surely receive the force from the packaged object 100.

In the present embodiment, by providing the protruding portion 5 and the second corrugated cardboard sheet 3, the possibility that the packaged object 100 is damaged during distribution can be surely reduced. That is, the quality of the product, which is the packaged object 100, can be reliably maintained at the time of distribution. Further, the amount of the corrugated cardboard sheet used can be surely reduced as compared with the configuration in which the buffer body in which a plurality of layers of the corrugated cardboard sheet is laminated is arranged in the gap between the inner wall surface 6 and the surface of the packaged object 100.

In the present embodiment, one second corrugated cardboard sheet 3 intersects with three protrusions 5. In the present embodiment, the following effects can be obtained by intersecting the one second corrugated cardboard sheet 3 with the plurality of projecting portions 5. It is possible to more reliably prevent the position of the second corrugated cardboard sheet 3 from shifting in a direction parallel to the inner wall surface 6. The protrusion 5 and the second corrugated cardboard sheet 3 can more reliably receive the force from the packaged object 100.

In the present embodiment, two second corrugated cardboard sheets 3 intersect with one protrusion 5. In the present embodiment, the following effects can be obtained by intersecting the plurality of second corrugated cardboard sheets 3 with respect to one protruding portion 5. The state in which the protruding portion 5 is perpendicular to the inner wall surface 6 can be more reliably maintained. The protrusion 5 and the second corrugated cardboard sheet 3 can more reliably receive the force from the packaged object 100.

In this embodiment, it is configured as follows. When viewed from a direction perpendicular to the inner wall surface 6, the plurality of protrusions 5 and the plurality of second corrugated cardboard sheets 3 are combined in a grid pattern or a grid pattern. With respect to the length of the flat portion 4 along the first flute direction FD1, the length of the second corrugated cardboard sheet 3 is shorter than the length of the flat portion 4.

As shown in FIG. 1, in the present embodiment, the packing device 1 includes a support portion 9. The support portion 9 projects upward with respect to the inner wall surface 6 of the flat portion 4. The support portion 9 has a contact surface 10 for contacting the object to be packed 100. The support portion 9 may be formed by the first corrugated cardboard sheet 2. For example, the support portion 9 may be formed by a bent portion, a cut-up portion, a laminated portion, or a combination thereof provided on a part of the first corrugated cardboard sheet 2. Further, a support portion 9 formed of parts separate from the first corrugated cardboard sheet 2 may be attached to the first corrugated cardboard sheet 2.

In the present embodiment, the packing device 1 includes a side wall 11. The side wall 11 projects upward with respect to the contact surface 10 of the support portion 9. The side wall 11 faces the side surface of the object to be packed 100. The side wall 11 may be formed by the first corrugated cardboard sheet 2. For example, the side wall 11 may be formed by a bent portion, a cut-up portion, a laminated portion, or a combination thereof provided on a part of the first corrugated cardboard sheet 2. Further, a side wall 11 formed of a component separate from the first corrugated cardboard sheet 2 may be attached to the first corrugated cardboard sheet 2 or the support portion 9. Further, the support portion 9 and the side wall 11 may be formed from one component and attached to the first corrugated cardboard sheet 2.

In the present embodiment, a plurality of cut lines 7 are formed on one first corrugated cardboard sheet 2. Thereby, a plurality of protrusions 5 can be formed in one first corrugated cardboard sheet 2. As shown in FIG. 3, in the present embodiment, three protrusions 5 are formed by using only three cut lines 7 out of eight cut lines 7 formed on the first corrugated cardboard sheet 2. There is.

In the present embodiment, the protrusion 5 is formed by using only a part of the cut lines 7 among the plurality of cut lines 7 formed on the first corrugated cardboard sheet 2, and thus the following effects are obtained. Is obtained. The position where the protrusion 5 is formed can be changed by selecting a part of the cut lines 7 used for forming the protrusion 5 from the plurality of cut lines 7. For example, the protrusion 5 can be selectively formed according to the portion of the packaged object 100 that requires priority protection. The “part requiring intensive protection” is, for example, a part of the packaged object 100 having a lower strength than other parts. In the example shown in FIG. 3, a part 101 of the lower surface of the packaged object 100 corresponds to a part requiring intensive protection. The part 101 is a part with hatching in FIG. In the example shown in FIG. 3, three protrusions 5 are formed at positions facing the portion 101 of the packaged object 100, and the protrusions 5 are not formed at other positions.

As shown in FIG. 4, in the packing form 200 of the present embodiment, the packed object 100 is placed on the packing device 1, and the packing device 1 and the packed object 100 are fastened by the band 12. The band 12 is wound along the lower surface of the packing device 1, the upper surface and the side surface of the packed object 100. The band 12 may be made of a resin such as polypropylene, for example. A packing material (not shown) made of, for example, a corrugated cardboard sheet may be arranged between the upper surface of the object to be packed 100 and the band 12. Further, a packing material (not shown) that covers the side surface of the object to be packed 100 may be arranged.

For convenience of explanation, in FIG. 1, reference numerals 7A-7H are attached to the eight notch lines 7 formed on the first corrugated cardboard sheet 2 in order to distinguish them. When it is not necessary to distinguish them, they are collectively called "cut line 7".

The cut lines 7A, 7B, 7C, and 7D are located at different positions with respect to the first flute direction FD1 of the flat portion 4. The cut lines 7A, 7B, 7C, and 7D are arranged at intervals along the first flute direction FD1 of the flat portion 4. In the following description, the direction orthogonal to the first flute direction FD1 of the flat portion 4 and parallel to the inner wall surface 6 is simply referred to as "direction FD4 orthogonal to the first flute direction FD1 of the flat portion 4". .. The cut lines 7A, 7B, 7C, and 7D are in the same position with respect to the direction FD4 orthogonal to the first flute direction FD1 of the flat portion 4.

The cut lines 7E, 7F, 7G, and 7H are located at different positions with respect to the first flute direction FD1 of the flat portion 4. The cut lines 7E, 7F, 7G, and 7H are lined up at intervals along the first flute direction FD1 of the flat portion 4. The cut lines 7E, 7F, 7G, and 7H are at the same positions with respect to the direction FD4 orthogonal to the first flute direction FD1 of the flat portion 4.

Regarding the direction FD4 orthogonal to the first flute direction FD1 of the flat portion 4, the group consisting of the cutting lines 7A, 7B, 7C, 7D and the group consisting of the cutting lines 7E, 7F, 7G, 7H are at different positions from each other. ..

In the present embodiment, the cut lines 7A-7H are arranged in a matrix of 4 rows × 2 columns when viewed from a direction perpendicular to the inner wall surface 6 of the flat portion 4.

In the present embodiment, the shapes of the cut lines 7A-7H are the same as each other. Instead of such a configuration, a plurality of types of cut lines 7 having different shapes may be formed on the first corrugated cardboard sheet 2.

In the present embodiment, a plurality of cut lines 7 at different positions with respect to the first flute direction FD1 of the flat portion 4 are formed on the first corrugated cardboard sheet 2, so that at least one of the following effects is obtained. Two effects can be obtained. The degree of freedom in selecting the position or region of the protrusion 5 is increased. For example, in the examples shown in FIGS. 2 and 3, three protrusions 5 are formed by using the cut lines 7A-7C in FIG. Instead of this example, the cut lines 7B-7D can be used to form the three protrusions 5. In this case, the position where the second corrugated cardboard sheet 3 is attached can be changed to a different position with respect to the first flute direction FD1 of the flat portion 4. Further, a plurality of protruding portions 5 arranged along the first flute direction FD1 of the flat portion 4 can be connected via the second corrugated cardboard sheet 3. Further, two protrusions 5 are formed using only the cut lines 7A and 7B, two protrusions 5 are formed using only the cut lines 7B and 7C, and two protrusions 5 are formed using only the cut lines 7C and 7D. It is also possible to form two protrusions 5.

In the present embodiment, a plurality of cut lines 7 at different positions with respect to the direction FD4 orthogonal to the first flute direction FD1 of the flat portion 4 are formed on the first corrugated cardboard sheet 2, and thus the following effects are obtained. Is obtained. The degree of freedom in selecting the position or region of the protrusion 5 is increased. For example, instead of the examples shown in FIGS. 2 and 3, the cut line 7E-7G in FIG. 1 can be used to form the protrusion 5. In this case, the position where the second corrugated cardboard sheet 3 is attached can be changed to a different position with respect to the direction FD4 orthogonal to the first flute direction FD1 of the flat portion 4.

In the present embodiment, it is not necessary to form the protruding portion 5 with a corrugated cardboard sheet different from the flat portion 4, so that the amount of the corrugated cardboard sheet used can be reduced. Therefore, it is possible to reduce the cost and environmental load.

Further, in the present embodiment, the following effects can be obtained by forming the protruding portion 5 by using some of the cut lines 7 among the plurality of cut lines 7 formed on the first corrugated cardboard sheet 2. can get. Since the protruding portion 5 can be formed in a required region according to the type of the packaged object 100, it is easy to manufacture and has high versatility. Since the second corrugated cardboard sheet 3 is attached only to the protruding portion 5 formed in the required region, the second corrugated cardboard sheet 3 is compared with the case where the second corrugated cardboard sheet 3 is arranged as a whole with respect to the first corrugated cardboard sheet 2. The amount of the corrugated cardboard sheet 3 used can be reduced.

FIG. 5 is a schematic cross-sectional view of the packing form 200 shown in FIG. FIG. 5 is a cross-sectional view of the flat portion 4 cut along a plane perpendicular to the first flute direction FD1. The packaged object 100 of the example shown in FIG. 5 has a configuration in which the heavy object 102 is arranged inside the housing 103. The housing 103 is, for example, a box-shaped casing made of sheet metal or the like. The heavy object 102 is, for example, an electric motor, a compressor, a microwave generator, or the like. The heavy object 102 is fixed to the inner wall of the housing 103 via the fixing member 104. The protrusion 5 and the second corrugated cardboard sheet 3 are arranged at positions vertically below the heavy object 102.

Support portions 9 are provided on both sides of the first corrugated cardboard sheet 2 via flat portions 4. A flat portion 4, a protruding portion 5, and a second corrugated cardboard sheet 3 are located between the support portions 9 on both sides. The load of the packaged object 100 is supported by the contact surfaces 10 of the support portions 9 on both sides contacting the lower surface of the housing 103 of the packaged object 100.

As shown in FIG. 5, with respect to the direction perpendicular to the inner wall surface 6 of the flat portion 4, the distance between the tip 5a of the protruding portion 5 and the inner wall surface 6 is L1, and the contact surface 10 and the inner wall surface 6 of the support portion 9 are defined as L1. Let L2 be the distance from. In the example shown in FIG. 5, the distance L1 is smaller than the distance L2. Therefore, there is a gap between the tip 5a of the protrusion 5 and the surface of the object to be packed 100. Similarly, there is a gap between the second edge 3b of the second corrugated cardboard sheet 3 and the surface of the packaged object 100.

Consider a case where the packing form 200 shown in FIG. 5 is accidentally dropped on a floor surface or the like during distribution. FIG. 6 is a schematic cross-sectional view showing a state at the moment when the dropped packing form 200 lands. As shown in FIG. 6, when the dropped packing form 200 lands, the housing 103 is deformed between the support portions 9 on both sides due to the inertial force acting on the packed object 100, and the housing 103 is bent. The deflection is considered to be maximized at the position where the heavy object 102 is fixed. In the present embodiment, in the state shown in FIG. 6, the tip 5a of the protruding portion 5 and the second edge 3b of the second corrugated cardboard sheet 3 come into contact with the surface of the housing 103, whereby the housing 103. The deflection can be reduced. As a result, it is possible to reliably prevent the plastic deformation of the housing 103, that is, the deformation remaining in the housing 103.

Instead of the above-described configuration, the configuration may be as follows in the state shown in FIG. 5, that is, in the stationary state of the packing form 200. The distance L1 may be equal to the distance L2. That is, the tip 5a of the protrusion 5 may be in contact with the surface of the object to be packed 100. Further, the second edge 3b of the second corrugated cardboard sheet 3 may be in contact with the surface of the packaged object 100. Even in the case of such a configuration, an effect similar to the above-mentioned effect can be obtained.

Embodiment 2.
Next, the second embodiment will be described with reference to FIG. 7, but the differences from the first embodiment will be mainly described, and the elements common to or corresponding to the above-mentioned elements have the same reference numerals. Is added to simplify or omit duplicate explanations. FIG. 7 is a perspective view showing the packing device 1A according to the second embodiment.

As shown in FIG. 7, in the first corrugated cardboard sheet 2 included in the packing device 1A according to the second embodiment, only three notch lines 7A-7C out of the eight notch lines 7A-7H according to the first embodiment are formed. Has been done. According to the second embodiment, the cut line 7A-7C is formed only in the region where the protrusion 5 and the second corrugated cardboard sheet 3 need to be arranged, and the cut line 7D-7H in the other regions is omitted. Therefore, the manufacturing cost can be reduced as compared with the first embodiment.

In each of the above-described embodiments, the configuration in which the first corrugated cardboard sheet 2 is arranged so as to cover the lower surface of the packaged object 100 has been described as an example. In the present invention, not limited to such an example, the first corrugated cardboard sheet 2 may be arranged so as to cover the side surface of the packaged object 100, for example.

1,1A Packing device, 2 1st corrugated cardboard sheet, 3 2nd corrugated cardboard sheet, 3a 1st edge, 3b 2nd edge, 3c 2nd slit, 4 Flat part, 5 Protruding part, 5a Tip, 5b 1st slit , 6 Inner wall surface, 7 Cut line, 8 Bending line, 9 Support part, 10 Contact surface, 100 Packaged object, 200 Packing form

Claims (10)

The first cardboard sheet and
With the second cardboard sheet,
With
The first corrugated cardboard sheet is
A flat part with an inner wall surface facing the object to be packed,
A protruding portion that protrudes perpendicularly to the inner wall surface,
Have,
The protruding portion is a portion surrounded by a cut line and a bending line formed on the first corrugated cardboard sheet, and is connected to the flat portion by the bending line.
The second corrugated cardboard sheet intersects the protrusion and is arranged perpendicular to the inner wall surface.
The second corrugated cardboard sheet is sandwiched between the first slits formed in the protrusions, and the second corrugated cardboard sheet is sandwiched between the first slits.
The protrusion is sandwiched between the second slits formed in the second corrugated cardboard sheet.
The longitudinal direction of the flute groove provided in the first corrugated cardboard sheet is defined as the first flute direction.
The longitudinal direction of the flute groove provided in the second corrugated cardboard sheet is defined as the second flute direction.
The direction of the first flute of the protrusion is perpendicular to the inner wall surface.
Ri der perpendicular to the second flute direction the inner wall surface,
A plurality of the cut lines are formed on the first corrugated cardboard sheet.
The protrusion is formed by using only a part of the cut lines among the plurality of cut lines.
Wherein the plurality of positions of rest of the score line of said score lines, packaging equipment that to form the flat portion without forming the projecting portion. A support portion having a contact surface that protrudes from the inner wall surface and comes into contact with the packaged object is provided.
The first aspect of claim 1, wherein the distance between the tip of the protrusion and the inner wall surface is equal to or smaller than the distance between the contact surface and the inner wall surface in a direction perpendicular to the inner wall surface. Packing device. The second corrugated cardboard sheet has a first edge in contact with the inner wall surface and a second edge opposite to the first edge.
The packing device according to claim 1 or 2, wherein the tip of the protruding portion and the second edge of the second corrugated cardboard sheet face the surface of the object to be packed. The packing device according to any one of claims 1 to 3 , wherein a plurality of cut lines at different positions with respect to the first flute direction of the flat portion are formed on the first corrugated cardboard sheet. The invention according to any one of claims 1 to 4 , wherein a plurality of cut lines located at different positions in a direction orthogonal to the first flute direction of the flat portion are formed on the first corrugated cardboard sheet. Packing device. The packing device according to any one of claims 1 to 5 , wherein the position where the second corrugated cardboard sheet is attached can be changed to a different position with respect to the first flute direction of the flat portion. The packing device according to any one of claims 1 to 6 , wherein the position where the second corrugated cardboard sheet is attached can be changed to a different position with respect to the direction orthogonal to the first flute direction of the flat portion. The packing device according to any one of claims 1 to 7 , wherein one second corrugated cardboard sheet intersects a plurality of the protrusions. The packing device according to any one of claims 1 to 8 , wherein a plurality of the second corrugated cardboard sheets intersect with one protrusion. A plurality of the protrusions parallel to each other are formed on one of the first corrugated cardboard sheets.
With a plurality of the second corrugated cardboard sheets parallel to each other,
One said second corrugated cardboard sheet intersects the plurality of said protrusions formed on the said one said first corrugated cardboard sheet, and the plurality of said said second corrugated cardboard sheets with respect to one said said protrusion. The plurality of protrusions formed on the one corrugated cardboard sheet and the plurality of second corrugated cardboard sheets when viewed from a direction perpendicular to the inner wall surface. The packing device according to any one of claims 1 to 7, wherein and are combined in a corrugated cardboard shape.

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