JP2020111376A - Cushioning material - Google Patents

Abstract

To provide a cushioning material that is difficult to separate when dropped.SOLUTION: A cushioning material 1L includes: a support part 10 for supporting a bottom surface of an article to be packed; a first facing part 12 and a second facing part 15 each having a facing surface facing a left side surface of the article to be packed; and a hole located between the support part 10 and the first facing part 12 and the second facing part 15 when viewed from above, and penetrating in a vertical direction. When the article to be packed drops with the cushioning material 1L facing downward, the cushioning material 1L bends to absorb the impact of the fall, and separation of the cushioning material 1 L can be suppressed, as compared with the case without a hole 19.SELECTED DRAWING: Figure 3

Description

The present invention relates to a cushioning material.

As an invention of a cushioning material for packaging, there is a cushioning member disclosed in Patent Document 1, for example. Among the cushioning members disclosed in Patent Document 1, a lower cushioning member that fits in a lower portion of an article to be packaged includes a concave portion that fits in a lower end portion of the article to be packaged, and a lower surface of the bottom portion that penetrates from the concave portion to the article to be packaged. It has an opening located below.

JP, 2013-203408, A

When the cardboard box containing the cushioning material and the object to be packed falls, the impact of the fall may break and separate the cushioning material.

An object of the present invention is to provide a cushioning material that is difficult to separate when dropped.

The cushioning material according to claim 1 of the present invention includes a support portion that supports the bottom surface of the article to be packed, an opposing portion that has an opposing surface that faces the first side surface of the article to be packaged, and the support portion when viewed from above. And a hole penetrating in the vertical direction, the hole being located between the counter part and the facing part.

In the cushioning material according to claim 2 of the present invention, the facing portion includes a first facing surface facing the first side surface on a second side surface side that intersects with the first side surface when viewed from above, and a facing surface viewed from above. And a second facing surface that faces the first side surface on a third side surface side that intersects the first side surface, and the hole includes the second facing surface from between the first facing surface and the support portion. And between the support part.

In the cushioning material according to claim 3 of the present invention, a first imaginary line drawn from the end on the second side surface side of the support portion along the second side surface toward the facing portion, and the support portion The edge of the hole is located between the end on the third side surface side and a second imaginary line drawn in the direction of the facing portion along the third side surface.

In the cushioning material according to claim 4 of the present invention, the support portion has a shape extending along the first side surface, and the hole has parallel four sides having long sides in a direction parallel to the first side surface. It is a shape.

In the cushioning material according to a fifth aspect of the present invention, the facing portion includes a decreasing portion in which the width of the facing surface in the normal direction decreases toward the lower side.

In the cushioning material according to claim 6 of the present invention, the reducing portion is provided on the second side surface side that intersects the first side surface when viewed from above, and the width of the facing surface in the normal direction is downward. A first decreasing portion that becomes thinner as it goes, and a second reducing portion that is provided on the third side surface side that intersects with the first side surface when viewed from above and that becomes thinner as the width of the facing surface in the normal direction decreases downward. And one end of the hole is located between the first reducing portion and the support portion, and the other end of the hole is located between the second reducing portion and the support portion.

In the cushioning material according to the seventh aspect of the present invention, the supporting portion includes a groove in a direction along a second side surface that intersects the first side surface when viewed from above.

In the cushioning material according to claim 8 of the present invention, the groove is provided on a surface facing the object to be packed.

In the cushioning material according to the ninth aspect of the present invention, the groove is formed at a position overlapping the position where the hole is provided in the direction parallel to the first side surface.

According to the cushioning material according to the first aspect of the present invention, the cushioning material becomes difficult to separate when dropped.
According to the cushioning material of the second aspect of the present invention, it is possible to prevent the holes from being deformed when dropped and receiving a force from the side surface, and to be separated from each other when dropped.
According to the cushioning material of the third aspect of the present invention, it is possible to prevent the supporting portion and the facing portion from being separated.
According to the cushioning material of the fourth aspect of the present invention, when the hole is not parallel to the facing portion or the supporting portion, it is easier to absorb the force acting at the time of dropping when the hole is distorted. ..
With the cushioning material according to the fifth aspect of the present invention, it is possible to prevent the supporting portion and the facing portion from being separated from each other when dropped from the side surface, as compared with the case where there is no reduced portion.
According to the cushioning material according to the sixth aspect of the present invention, it is possible to suppress separation of the support portion and the facing portion when falling from the reduced portion, as compared with the case where there is no reduced portion.
With the cushioning material according to the seventh aspect of the present invention, the cushioning material bends when dropped and is difficult to separate.
According to the cushioning material according to the eighth aspect of the present invention, the cushioning material bends toward the object to be packed when dropped and is difficult to separate.
According to the cushioning material of the ninth aspect of the present invention, the cushioning material is not covered when dropped, as compared with the configuration in which the hole is not provided in a position parallel to the first side surface. It easily bends to the side of the package, making it difficult to separate.

FIG. 3 is a diagram showing a cushioning material and a packing material for packing the image forming apparatus. The perspective view of buffer material 1L. The figure which showed the upper surface of the buffer material 1L, the front surface, the back surface, the left side surface, and the right side surface. Sectional view on the AA line of FIG. The figure which showed the simulation result of the damage condition of 1 L of buffer materials by a fall. The figure which showed the simulation result of the damage condition of 1 L of buffer materials by a fall. The figure which showed the simulation result of the damage condition of 1 L of buffer materials by a fall. The figure which showed the upper surface of the cushioning material 1L which concerns on a modification.

[Embodiment]
(Structure of the embodiment)
Hereinafter, a cushioning material according to the present invention will be described with reference to the drawings. In order to facilitate understanding of the description, in the drawings, the front-back direction is the X-axis direction, the left-right direction is the Y-axis direction, and the up-down direction is the Z-axis direction, and the direction or side indicated by the arrow X is the front or front side. The direction or side indicated by arrow -X is the rear or back side, the direction or side indicated by arrow Y is the right or right side, the direction or side indicated by arrow -Y is the left or left side, the direction indicated by arrow Z or The side shown is the upper side or the upper side, and the direction shown by the arrow -Z or the side shown is the lower side or the lower side. Also, in the figure, the ones marked with "." in "○" mean arrows pointing from the back of the paper to the front, and those marked "x" in "○" are the front of the paper. Shall mean the arrow from the back to the back. Further, in the following description using the drawings, illustrations other than the members necessary for the description are appropriately omitted for easy understanding.

FIG. 1 is a diagram showing a cushioning material and a packing material for packing an article to be packed. The image forming apparatus U is, for example, an apparatus that forms an image on a sheet, and is an example of an article to be packaged according to the present invention. The object to be packed is not limited to the image forming apparatus U, and may be another device such as an electronic device or a home electric device.

The packing material 2U and the packing material 2B are made of cardboard. The packing material 2U has a rectangular parallelepiped shape with an open lower side, and the packing material 2B has a rectangular parallelepiped shape with an open upper side. By inserting the side wall of the packing material 2B inside the side wall of the packing material 2U, the packing material 2U and the packing material 2B become a box for accommodating the image forming apparatus U, the cushioning material 1U, the cushioning material 1L, and the cushioning material 1R. .. The side wall of the packing material 2U may be inserted inside the packing material 2B to form a box for housing the image forming apparatus U, the cushioning material 1U, the cushioning material 1L, and the cushioning material 1R.

The cushioning material 1U protects the image forming apparatus U housed inside the packing material 2U and the packing material 2B, and is made of expanded polystyrene. The cushioning material 1U is disposed on the upper side of the image forming apparatus U, protects the upper surface of the image forming apparatus U, the four corners of the upper surface, and the four sides of the upper surface, and reduces the impact transmitted from the outside of the packaging material 2U to the image forming apparatus U.

The cushioning material 1L and the cushioning material 1R protect the image forming apparatus U housed inside the packing material 2U and the packing material 2B, and are made of expanded polystyrene. The cushioning material 1L and the cushioning material 1R are examples of the cushioning material according to the present invention. The cushioning material 1L supports the left end of the bottom surface of the image forming apparatus U, and protects the periphery of the lower left side of the image forming apparatus U, the periphery of the left front corner, and the periphery of the left rear corner. The cushioning member 1R supports the right end of the bottom surface of the image forming apparatus U and protects the periphery of the lower right side of the image forming apparatus U, the periphery of the right front corner, and the periphery of the right rear corner. The material of the cushioning material 1U, the cushioning material 1L, and the cushioning material 1R is not limited to styrofoam, and may be a biodegradable material or another material such as paper.

FIG. 2 is a perspective view of the cushioning material 1L. 3A is a top surface of the cushioning material 1L, FIG. 3B is a right side surface of the cushioning material 1L, FIG. 3C is a front surface of the cushioning material 1L, and FIG. 3D is a cushioning material 1L. It is the figure which showed the rear surface. Further, FIG. 4 is a cross-sectional view taken along the line AA of FIG.

The support unit 10 is in contact with the bottom surface of the image forming apparatus U, receives a force acting from the bottom surface of the packaging material 2B, and supports the left end portion of the bottom surface of the image forming apparatus U. The support portion 10 is an example of the support portion according to the present invention. The support portion 10 is formed along the front-rear direction with a predetermined width in the left-right direction and a predetermined thickness in the up-down direction. A groove 11 having a predetermined depth is formed along the left-right direction on the upper surface of the support portion 10, that is, on the surface side facing the image forming apparatus U. The groove 11 is an example of the groove according to the present invention. In the present embodiment, the position of the groove 11 in the front-rear direction is the central portion in the front-rear direction. The number of the grooves 11 is not limited to one, and a plurality of grooves 11 may be provided side by side in the front-rear direction.

The first facing portion 12 is formed by bending from the left-right direction to the front-back direction when viewed from above. The first facing portion 12 receives a force acting from the left side surface, front surface, bottom surface, lower left side, rear lower side, and left front corner of the packing material 2U and the packing material 2B, and protects the left front corner of the image forming apparatus U and its periphery. To do. The first facing portion 12 is thicker in the vertical direction than the supporting portion 10. The first facing portion 12 has a left front facing surface 13 facing the left side surface of the image forming apparatus U and a front facing surface 14 facing the front surface of the image forming apparatus U. The left side surface of the image forming apparatus U is an example of the first side surface according to the present invention, the front surface of the image forming apparatus U is an example of the second side surface according to the present invention, and the rear surface of the image forming apparatus U is a book side. It is an example of the 3rd side surface based on invention. The left front facing surface 13 is an example of the facing surface and the first facing surface according to the present invention. The supporting portion 10 and the first facing portion 12 are connected by a connecting portion 20 whose thickness in the vertical direction is smaller than that of the supporting portion 10. The first facing portion 12 is chamfered on the left side facing the packing material 2U, and the width of the left front facing surface 13 in the normal direction, that is, the width in the left-right direction becomes thinner toward the lower side. It has a section 22. The first reduction unit 22 is an example of the reduction unit and the first reduction unit according to the present invention. The chamfering angle of the first reducing portion 22 with respect to the horizontal direction is set to an angle that matches the image forming apparatus U to be packed. Although the left side surface of the first reduction portion 22 is a flat surface, it is not limited to a flat surface and may be a curved surface. Further, the first reducing portion 22 is not limited to a shape such that the width in the left-right direction continuously decreases downward as in the chamfering, but the width in the left-right direction gradually decreases as the width decreases downward. It may have a shape. Further, the first facing portion 12 has a chamfered front side, and has a third reducing portion 24 in which the width of the front facing surface 14 in the normal direction, that is, the width in the front-rear direction becomes thinner toward the lower side.

The second facing portion 15 is formed by bending from the left-right direction to the front-back direction when viewed from above. The second facing portion 15 receives the force acting from the left side surface, the rear surface, the bottom surface, the lower left side, the front lower side, and the left rear corner of the packing material 2U and the packing material 2B, and the left rear corner of the image forming apparatus U and its periphery. Protect. The second facing portion 15 is thicker in the vertical direction than the supporting portion 10. The second facing portion 15 has a left rear facing surface 16 facing the left side surface of the image forming apparatus U and a rear facing surface 17 facing the rear surface of the image forming apparatus U. The left rear facing surface 16 is an example of the facing surface and the second facing surface according to the present invention. The supporting portion 10 and the second facing portion 15 are connected by a connecting portion 21 whose thickness in the up-down direction is thinner than that of the supporting portion 10. The second facing portion 15 is chamfered on the left side facing the packing material 2U, and the width of the left rear facing surface 16 in the normal direction, that is, the width in the left-right direction becomes thinner toward the lower side. It has a reducing portion 23. The second reduction unit 23 is an example of the reduction unit and the second reduction unit according to the present invention. The chamfering angle of the second reducing portion 23 with respect to the horizontal direction is set to an angle that matches the image forming apparatus U to be packed. Although the left side surface of the second reduction portion 23 is a flat surface, it is not limited to a flat surface and may be a curved surface. Further, the second reduction portion 23 is not limited to a shape such that the width in the left-right direction continuously decreases downward as in the chamfering, but the width in the left-right direction gradually decreases downward. It may have a shape. Further, the second facing portion 15 is chamfered on the rear side, and has a fourth reducing portion 25 in which the width of the rear facing surface 17 in the normal direction, that is, the width in the front-rear direction becomes thinner toward the lower side. ..

The connecting portion 18 connects the first facing portion 12 and the second facing portion 15. The vertical thickness of the connecting portion 18 is smaller than the vertical thickness of the support portion 10. The vertical thickness of the connecting portion 18 may be greater than or equal to the vertical thickness of the support portion 10. The first facing portion 12, the second facing portion 15, and the connecting portion 18 are examples of facing portions according to the present invention.

A hole 19 penetrating in the vertical direction is provided between the support portion 10 and the connecting portion 18. The shape of the hole 19 is a parallelogram when viewed from above, and the long side of the hole 19 is parallel to the front-rear direction. In other words, the long side of the hole 19 is parallel to the left side surface of the image forming apparatus U. Looking at the positional relationship between the hole 19 and the left front facing surface 13 and the left rear facing surface 16, the hole 19 is located between the left front facing surface 13 and the supporting portion 10 and extends from the left rear facing surface 16 to the supporting portion 10. Between. As for the positional relationship between the hole 19 and the groove 11, the position of the groove 11 in the front-rear direction overlaps with the hole 19 when viewed from the right side. The front end of the hole 19 is located rearward of the front end of the support portion 10, and the rear end of the hole 19 is located forward of the rear end of the support portion 10. The length in the front-rear direction is shorter than the length of the support portion 10. In other words, between the first imaginary line drawn leftward from the front end of the support part 10 and the second imaginary line drawn leftward from the rear end of the support part 10 in the front-back direction of the hole 19. Both ends are located. The front end of the hole 19 is an example of one end according to the present invention, and the rear end of the hole 19 is an example of the other end according to the present invention. Both ends of the hole 19 in the front-back direction are examples of the edge of the hole according to the present invention. Also, looking at the positional relationship between the first reduced portion 22 and the second reduced portion 23 and the hole 19, the front end of the hole 19 is located between the first reduced portion 22 and the support portion 10, and the second reduced portion The rear end of the hole 19 is located between 23 and the support 10.

In FIG. 1, the cushioning material 1R has a shape different from that of the cushioning material 1L, but the cushioning material 1R may have a surface-symmetrical configuration with respect to the cushioning material 1L in the XZ plane.

(Operation of cushioning material 1L and cushioning material 1R)
The packing materials 2U and 2B accommodating the image forming apparatus U protected by the cushioning material may accidentally fall when moving. At this time, the cushioning material softens the impact caused by dropping and protects the image forming apparatus U, which is the object to be packed. Here, since styrofoam, which is widely used as a cushioning material, has poor ductility, there is a risk that it may be broken and separated by the impact of falling. There is a method to increase the strength and prevent separation by increasing the wall thickness so that the cushioning material does not separate, but it is necessary to reduce the amount of Styrofoam used to satisfy the demand for cost reduction of the cushioning material. It is desired to secure strength other than thickening.

In the present embodiment, by providing the hole 19, the groove 11, the first reduced portion 22 and the second reduced portion 23 in the cushioning material 1L, the strength of the cushioning material 1L is ensured while suppressing the amount of styrofoam used. The cushioning material 1L has a smaller amount of Styrofoam used and is deformed when a force due to a drop is applied, as compared with a configuration that does not have the hole 19, the groove 11, the first reduced portion 22, and the second reduced portion 23. It absorbs shock and is suppressed from separating.

FIG. 5B shows a simulation result of a damage state of the cushioning material 1L when the packing materials 2U and 2B containing the image forming apparatus U supported by the cushioning material 1L and the cushioning material 1R are dropped from the left side surface. It is a figure. In FIG. 5, the upper part shows a view of the cushioning material 1L as seen from diagonally right above, and the lower part shows the view of the cushioning material 1L as seen from diagonally left below. It shows the cracks that occurred in the.

When dropped from the side surface, the first facing portion 12 and the second facing portion 15 are deformed and absorb the shock, and as shown in FIG. Although the crack C is generated in the vertical direction, the cushioning material 1L is not separated into a plurality of pieces.

5(a), 5(c), and 5(d) show a structure in which the shock absorbing material 1L does not include the hole 19 and a structure that does not include the first reducing portion 22 and the second reducing portion 23. It is the figure which showed the damage situation.

When dropped from the left side surface, a configuration having the first reducing portion 22 and the second reducing portion 23 (FIGS. 5B and 5D) and a configuration having no first reducing portion 22 and the second reducing portion 23 Comparing (FIGS. 5(a) and 5(c)), the configuration having the first reduction section 22 and the second reduction section 23 (FIGS. 5(b) and 5(d)) is rearward. Cracks C on the side are less. That is, the first reduction portion 22 and the second reduction portion 23 greatly contribute to the suppression of the generation of the crack C when it is dropped from the side surface.

Further, when dropped from the side surface, the first reduction portion 22 and the second reduction portion 23 are provided, and the configuration including the hole 19 (FIG. 5B) and the first reduction portion 22 and the second reduction portion 23 are provided. Comparing with the structure (FIG. 5(d)) which has the hole 19 and does not have the hole 19, the structure of the present embodiment having the hole 19 (FIG. 5(b)) has less cracks C. Has become. That is, the hole 19 also contributes to suppressing the occurrence of the crack C.

FIG. 6B shows a simulation result of a damage situation of the cushioning material 1L when the packaging materials 2U and 2B containing the image forming apparatus U supported by the cushioning material 1L and the cushioning material 1R are dropped from the lower left side. It is a figure. In FIG. 6, the upper row shows a view of the cushioning material 1L as seen from diagonally right above, and the lower row shows a view of the cushioning material 1L as seen from diagonally left above. Crack C is a crack caused by a shock caused by dropping. Is shown.

When dropped from the lower left side, the first reduced portion 22 and the second reduced portion 23 around the hole 19 are impacted by the drop, and the first facing portion 12 and the second facing portion 15 bend in the direction of the hole 19. Absorb shock. Further, since the support portion 10 further includes the groove 11, the cushioning material 1L is easily bent, and the support portion 10 is bent in the vertical direction to absorb the shock. Therefore, the crack is hard to be transmitted to the connecting portion 18, and as shown in FIG. 6B, the crack C is generated in the front-rear direction, the vertical direction, and the left-right direction on the right side of the first facing portion 12 and the second facing portion 15. However, the buffer material 1L is not separated into a plurality.

6(a), 6(c), and 6(d) show the cushioning material 1L in a configuration that does not include the hole 19 and a configuration that does not include the first reducing portion 22 and the second reducing portion 23. It is the figure which showed the damage situation.

When dropped from the lower left side, comparing the configuration without holes 19 (FIGS. 6A and 6D) with the configuration with holes 19 (FIGS. 6B and 6C), The structure having the holes 19 (FIGS. 6B and 6C) is largely bent and absorbs the impact, and the crack C is reduced. That is, when it falls from the lower left side, the hole 19 greatly contributes to suppressing the generation of the crack C.

Further, in the case of dropping from the lower left side, there is a hole 19 and the configuration including the first reduction portion 22 and the second reduction portion 23 (FIG. 6B) and the hole 19 and the first reduction portion 22. In comparison with the configuration without the second reduction unit 23 (FIG. 6C), the configuration of the present embodiment having the configuration with the first reduction unit 22 and the second reduction unit 23 (FIG. 6B). On the other hand, the number of cracks C on the front side in the left-right direction is smaller. That is, the first reduced portion 22 and the second reduced portion 23 also contribute to suppressing the generation of the crack C.

FIG. 7B shows a simulation result of a damage situation of the cushioning material 1L when the packaging materials 2U and 2B housing the image forming apparatus U supported by the cushioning material 1L and the cushioning material 1R are dropped from the left front corner. It is a figure. In FIG. 7, the upper row shows a view of the cushioning material 1L viewed from the diagonally right upper side, and the lower row shows a view of the cushioning material 1L viewed from the diagonal left lower side. The crack C is a crack caused by a shock caused by dropping. Is shown.

When dropped from the left front corner, the first facing portion 12, the connecting portion 18, and the second facing portion 15 are displaced rearward relative to the support portion 10, and the hole 19 is deformed into a parallelogram, Absorbs the impact of falling. Further, since the support portion 10 further includes the groove 11, the cushioning material 1L is easily bent, and the support portion 10 is bent in the vertical direction to absorb the shock. Therefore, cracks are less likely to be transmitted to the connecting portion 18, and as shown in FIG. 7, cracks C occur in the first facing portion 12 in the front-rear direction and the left-right direction, but the cushioning material 1L is not separated into a plurality.

7(a), 7(c), and 7(d) show the cushioning material 1L in a configuration that does not include the hole 19 and a configuration that does not include the first reducing portion 22 and the second reducing portion 23. It is the figure which showed the damage situation.

When dropped from the front left corner, comparing the configuration with holes 19 (FIGS. 7B and 7C) with the configuration without holes 19 (FIGS. 7A and 7D), The structure with 19 absorbs an impact by being largely bent, and the crack C in the front-rear direction is reduced. That is, if the hole 19 is dropped from the left front corner, the hole 19 greatly contributes to suppressing the occurrence of the crack C.

Further, in the case of dropping from the left front corner, there is a hole 19 and a configuration including the first reducing portion 22 and the second reducing portion 23 (FIG. 7B), and the hole 19 and the first reducing portion. 22 and the second reduction unit 23 are not provided (FIG. 7(c)), the first reduction unit 22 and the second reduction unit 23 are provided (FIG. 7(b)). In this configuration, the number of cracks C in the front-rear direction is smaller on the right side and the left side of the first facing portion 12, and the number of vertical cracks C is less on the left side of the first facing portion 12. That is, the first reduced portion 22 and the second reduced portion 23 also contribute to suppressing the generation of the crack C.

When the height of the drop is low and the impact is small, the cushioning material 1L absorbs the impact by bending, and thus the crack C does not occur.

[Modification]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be implemented in various other modes. For example, the present invention may be implemented by modifying the above embodiment as follows. The above-described embodiment and the following modifications may be combined with each other.

In the embodiment described above, the groove 11 is provided on the upper surface side of the support portion 10, but it may be provided on the lower surface side of the support portion 10. Further, in the present invention, the groove 11 may not be formed in the support portion 10.

In the above-described embodiment, the cushioning material 1L has a structure having one hole 19, but as shown in FIG. 8, the first facing portion 12, the connecting portion 18, the second facing portion 15, and the supporting portion 10 are provided. It may be configured to have a plurality of holes 19 between and.

In the present invention, in the configuration in which the thickness of the connecting portion 18 in the vertical direction exceeds the thickness of the supporting portion 10, the left front facing surface 13, the right side surface of the connecting portion 18, and the left rear facing surface 16 are connected together. One surface may be one facing surface that faces the left side surface of the image forming apparatus U, and the hole 19 may be located between the facing surface and the support portion 10. This facing surface is an example of the facing surface according to the present invention.

1U, 1L, 1R... Buffer material, 2U, 2B... Packing material, 10... Support portion, 11... Groove, 12... First facing portion, 13... Left front facing surface, 14... Front facing surface, 15... Second facing Parts, 16... Left rear facing surface, 17... Rear facing surface, 18... Connecting portion, 19... Hole, 20, 21... Connecting portion, 22... First reducing portion, 23... Second reducing portion, 24... 3 reduction part, 25... 4th reduction part, U... Image forming apparatus, C... Crack

Claims (9)

A support portion that supports the bottom surface of the article to be packed,
A facing portion having a facing surface facing the first side surface of the article to be packed;
A cushioning material that is located between the support portion and the facing portion when viewed from above and that has a hole that penetrates in the vertical direction. The facing portion has a first facing surface facing the first side surface on a second side surface side that intersects the first side surface when viewed from above,
A second facing surface facing the first side surface on a third side surface side that intersects the first side surface when viewed from above,
The cushioning material according to claim 1, wherein the hole extends from between the first facing surface and the supporting portion to between the second facing surface and the supporting portion. A first imaginary line drawn from the end on the second side surface side of the support portion in the direction of the facing portion along the second side surface, and from the end on the third side surface side of the support portion to the third side surface. The cushioning material according to claim 2, wherein an edge of the hole is located between the second virtual line drawn in the direction of the facing portion and the second virtual line. The support portion has a shape extending along the first side surface,
The cushioning material according to claim 2, wherein the hole is a parallelogram having a long side in a direction parallel to the first side surface. The cushioning material according to claim 1, wherein the facing portion includes a decreasing portion in which a width of the facing surface in a direction normal to the facing surface becomes thinner toward a lower side. The reduction section is
A first reduction portion that is provided on the second side surface side that intersects with the first side surface when viewed from above, and that the width of the facing surface in the normal direction decreases toward the lower side;
A second reducing portion which is provided on the third side surface side that intersects with the first side surface when viewed from above, and in which the width of the facing surface in the normal direction decreases toward the lower side;
Have
One end of the hole is located between the first reduction portion and the support portion,
The cushioning material according to claim 5, wherein the other end of the hole is located between the second reduction portion and the support portion. The cushioning material according to claim 1, wherein the support portion includes a groove in a direction along a second side surface that intersects the first side surface when viewed from above. The cushioning material according to claim 7, wherein the groove is provided on a surface facing the object to be packed. The cushioning material according to claim 7, wherein the groove is formed at a position overlapping a position where the hole is provided in a direction parallel to the first side surface.