JP2020117273A - Buffer material and packaging material - Google Patents

Abstract

To provide a buffer material that can better protect the packed objects by suppressing their movements even if they are broken compared with the shapes in which movement becomes free when broken.SOLUTION: A buffer material 1B has a convex part 13b protruding from an inner surface 12b and a thinning part 14b which is a hole penetrating in the up-down direction. While cracks C propagated by the impact of dropping reach the thinning part 14b, the thinning part 14b is a through hole, so that the cracks C are not transmitted to the convex part 13b, and a wall 11b is separated from the buffer material 1B in a state of having the convex part 13b. The wall 11b separated from the buffer material 1B is movable forward and backward, but the convex part 13b is positioned between a packing material 2B and an image forming apparatus U and the convex part 13b is caught on the peripheral part of the thinning part 14b, so that the movement in the front-back direction is suppressed, and the left front corner of the bottom surface of the image forming apparatus U and its periphery are protected.SELECTED DRAWING: Figure 8

Description

The present invention relates to a cushioning material and a packaging material.

As a cushioning material used for packaging the objects to be packaged, there is a cushioning material disclosed in Patent Document 1, for example. In order to make it difficult for the cushioning material to break due to falling corners and edges, the corner receiving surface that receives the corner surface of the object to be packed below the object to be packed and the object to be packed from the corner receiving surface through the non-contact part Has a rib that contacts the wall surface of the. The width of the corner receiving surface is 8 to 20 mm, the length of the non-contact portion from the corner receiving surface to the rib is twice or more the width of the corner receiving surface, and the depth of the non-contact portion is equal to the thickness of the rib. It is 1/2 to 2/3. Further, the height from the bottom of the cushioning material to the upper surface of the corner receiving surface is 1/2 to 2/3 of the vertical thickness of the corner receiving surface.

JP, 2003-221071, A

By reducing the wall thickness to reduce the volume of the cushioning material, the cost of the cushioning material can be suppressed. However, if the wall thickness is reduced, the cushioning material will break when the cardboard box containing the cushioning material and the object to be packed falls, and the cracked cushioning material will move inside the cardboard box, making it impossible to protect the object to be packaged. ..

An object of the present invention is to provide a cushioning material that suppresses movement even when cracked and protects an object to be packed, as compared with a shape that can be freely moved when cracked.

The cushioning material according to claim 1 of the present invention includes: a first protection portion that protects a first surface of an article to be packed; a second protection portion that protects a second surface that intersects the first surface; Portion and the second protection portion, which are lightened in the normal direction of the first surface, and a protrusion protruding toward the object to be packed between the second protection portion and the lightening portion. And a section.

In the cushioning material according to claim 2 of the present invention, the second protection portion has a first facing surface facing the second surface and a second facing surface facing a third surface intersecting the second surface. And the lightening portion is at a position where a crack is transmitted at a position where the first facing surface and the second facing surface intersect.

In the cushioning material according to claim 3 of the present invention, the second protection portion has a first facing surface facing the second surface and a second facing surface facing a third surface intersecting the second surface. And the convex portion projects from a crossing position where the first facing surface and the second facing surface intersect at a position closer to the crossing position than a position where a crack may occur in the direction of the first facing surface. ..

In the cushioning material according to claim 4 of the present invention, the lightening portion is between the convex portion and the first protective portion.

In the cushioning material according to claim 5 of the present invention, the first surface is a bottom surface, and the lightening portion has a maximum gap between the object to be packed and the second surface. Located below the package.

In the cushioning material according to claim 6 of the present invention, the first surface is a bottom surface, and the convex portion is the packaged object even when the gap between the packaged object and the second surface is maximum. Located below the object.

In the cushioning material according to the seventh aspect of the present invention, the upper surface of the convex portion does not come into contact with the bottom surface of the article to be packed in the state where no crack is generated.

In the cushioning material according to claim 8 of the present invention, the upper surface of the convex portion is in contact with the bottom surface of the article to be packed.

In the cushioning material according to claim 9 of the present invention, the first surface is a bottom surface, and the vertical thickness of the convex portion is smaller than the vertical thickness of the first protective portion.

In the cushioning material according to the tenth aspect of the present invention, the lightening portion is a hole penetrating in the normal direction of the first surface.

A cushioning material according to claim 11 of the present invention includes a first protection portion that protects a first surface of an article to be packed, a second protection portion that protects a second surface that intersects the first surface, and the first protection material. Between the first protection part and the second protection part and between the first protection part and the second protection part, the guide part is less likely to break than the guide part, and the first part when the guide part is cracked. 2 The protective part and the remaining part which is not separated are provided.

A packing material according to claim 12 of the present invention is a packing material for packing an article to be packed and the cushioning material according to any one of claims 1 to 10, wherein the convex portion is the packing. The packing material is arranged between the packing material and the object to be packed even when the gap between the material and the object to be packed is maximized.

According to the cushioning material according to the first aspect of the present invention, it is possible to protect the object to be packed by suppressing the movement of the cracked cushioning material, as compared with the shape in which the cushioning material can move freely if it breaks.
With the cushioning material according to the second aspect of the present invention, it is possible to suppress the progress of cracking from spreading to the outside of the portion having the lightening portion, as compared with the case where there is no lightening portion.
According to the cushioning material of the third aspect of the present invention, it is possible to prevent the cracked cushioning material from moving toward the side surface of the article to be packed.
According to the cushioning material of the fourth aspect of the present invention, it is possible to prevent cracks from reaching the support portion.
According to the cushioning material of the fifth aspect of the present invention, it is possible to prevent the cracked cushioning material from moving in the vertical direction.
According to the cushioning material of the sixth aspect of the present invention, it is possible to prevent the cracked cushioning material from moving in the vertical direction.
With the cushioning material according to the seventh aspect of the present invention, the load from the article to be packed is less likely to be applied to the convex portion.
With the cushioning material according to the eighth aspect of the present invention, it is possible to prevent the cracked cushioning material from moving in the vertical direction.
According to the cushioning material of claim 9 of the present invention, even if the cushioning material breaks and moves, it is difficult to add the object to be packed.
According to the cushioning material of the tenth aspect of the present invention, it is possible to prevent the cracked cushioning material from moving and protect the article to be packed.
According to the eleventh aspect of the packaging material of the present invention, it is possible to prevent the cracked cushioning material from moving and protect the article to be packaged.

FIG. 3 is a diagram showing a cushioning material and a packing material for packing the image forming apparatus. The perspective view of cushioning material 1B. The figure which expanded the left front corner part of cushioning material 1B. The top view of cushioning material 1B. The figure which showed the front surface and rear surface of cushioning material 1B. Sectional drawing on the AA line of FIG. The figure which showed the bottom face of the cushioning material 1B. The figure which showed an example of the position of the crack which arises in buffer material 1B. The figure which showed the cross section of the buffer material 1B which concerns on a modification. The figure which showed the cross section of the buffer material 1B which concerns on a modification. Development view of packaging material 2Ua according to a modification The perspective view of packaging material 2Ua concerning a modification.

[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 bottom surface of the image forming apparatus U is an example of the first surface according to the present invention, and the front surface, the right side surface, the left side surface, and the rear surface of the image forming apparatus U are an example of the second surface according to the present invention. It is also an example of the third surface related to. 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 2U inside the side wall of the packing material 2B, the packing material 2U and the packing material 2B become a box that houses the image forming apparatus U, the cushioning material 1U, and the cushioning material 1B.

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 1B protects the packaging material 2U and the image forming apparatus U housed inside the packaging material 2B, and is formed of polystyrene foam. The cushioning material 1B is disposed below the image forming apparatus U inside the packaging material 2B, protects the lower surface of the image forming apparatus U, the four corners of the lower surface, and the four sides of the lower surface, and the image forming apparatus U is provided from the outside of the packaging material 2B. Alleviates the shock transmitted to the user. The material of the cushioning material 1U and the cushioning material 1B 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 1B. FIG. 3 is an enlarged view of the left front corner portion of the cushioning material 1B. FIG. 4 is a plan view of the cushioning material 1B. 5A is a diagram showing the front surface of the cushioning material 1B, and FIG. 5B is a diagram showing the rear surface of the cushioning material 1B. FIG. 6 is a sectional view taken along the line AA of FIG. FIG. 7 is a diagram showing the bottom surface of the cushioning material 1B.

The cushioning material 1B has a first bottom portion 10L and a second bottom portion 10R that support and protect the bottom surface of the image forming apparatus U. The first bottom portion 10L protects the bottom surface of the image forming apparatus U with the front-back direction as the longitudinal direction. The second bottom portion 10R protects the bottom surface of the image forming apparatus U with the longitudinal direction in the front-rear direction. The first bottom portion 10L and the second bottom portion 10R are examples of the first protection portion according to the present invention. The bottom surface of the cushioning material 1B is flat, and the bottom surfaces of the first bottom portion 10L and the second bottom portion 10R have the same vertical position. The vertical thickness of the first bottom portion 10L and the vertical thickness of the second bottom portion 10R are the same.

A hole 15 penetrating in the vertical direction is formed between the first bottom portion 10L and the second bottom portion 10R. Further, between the first bottom portion 10L and the second bottom portion 10R, the third bottom portion 16 that connects the first bottom portion 10L and the second bottom portion 10R is thinner than the first bottom portion 10L and the second bottom portion 10R in the vertical direction. Are formed. When the cushioning material 1B is arranged on the bottom surface side of the image forming apparatus U and accommodated in the packing material 2U and the packing material 2B, the upper surface of the first bottom portion 10L and the upper surface of the second bottom portion 10R are in contact with the bottom surface of the image forming apparatus U, The third bottom portion 16 does not contact the bottom surface of the image forming apparatus U.

Further, the cushioning material 1B has a first corner portion 11FL, a second corner portion 11FR, a third corner portion 11RL, and a fourth corner portion 11RR that protect the four corners of the bottom surface of the image forming apparatus U and the periphery thereof. The first corner portion 11FL, the second corner portion 11FR, the third corner portion 11RL, and the fourth corner portion 11RR are examples of the second protection portion according to the present invention. The first corner portion 11FL, the second corner portion 11FR, the third corner portion 11RL, and the fourth corner portion 11RR are formed in a shape in which two walls are orthogonal to each other when viewed from above. The first corner portion 11FL, the second corner portion 11FR, the third corner portion 11RL, and the fourth corner portion 11RR have the same vertical thickness, and are thicker than the first bottom portion 10L and the second bottom portion 10R. .. Hereinafter, the first corner portion 11FL, the second corner portion 11FR, the third corner portion 11RL, and the fourth corner portion 11RR will be referred to as corner portions 11 unless it is necessary to distinguish them from each other.

A first connecting portion 17F that connects the first corner portion 11FL and the second corner portion 11FR is formed between the first corner portion 11FL and the second corner portion 11FR. A second connecting portion 17R that connects the third corner portion 11RL and the fourth corner portion 11RR is formed between the third corner portion 11RL and the fourth corner portion 11RR.

The first corner portion 11FL protects the lower left front corner of the image forming apparatus U and its periphery. The first corner portion 11FL has a wall 11a extending in the left-right direction and a wall 11b extending in the front-rear direction. The wall 11a has an inner surface 12a along the YZ plane, and the wall 11b has an inner surface 12b along the XZ plane. The inner surface 12a and the inner surface 12b are an example of the first facing surface according to the present invention, and are also an example of the second facing surface according to the present invention. Further, the first corner portion 11FL has a convex portion 13a protruding rearward from the inner surface 12a and a convex portion 13b protruding rightward from the inner surface 12b. The convex portion 13a and the convex portion 13b are formed in a shape in which a rectangular parallelepiped is chamfered. The bottom surfaces of the convex portions 13a and 13b and the bottom surface of the first bottom portion 10L have the same vertical position. Further, the thicknesses of the convex portions 13a and the convex portions 13b in the vertical direction are the same, and as shown in FIG. 6, the thickness H1 is smaller than the vertical thickness H4 of the first bottom portion 10L. In the convex portion 13a, in a state where the cushioning material 1B is not cracked, the gap between the front surface and the inner surface 12a of the image forming apparatus U is maximum due to the movement of the image forming apparatus U backward with respect to the cushioning material 1B. Even if it becomes, it is located below the image forming apparatus U and its upper surface does not contact the bottom surface of the image forming apparatus U. In the state in which the buffer material 1B is not cracked, the convex portion 13b is a gap between the left side surface of the image forming apparatus U and the inner surface 12b due to the image forming apparatus U moving to the right with respect to the buffer material 1B. Even when the maximum value is maximized, it is located below the image forming apparatus U and its upper surface does not contact the bottom surface of the image forming apparatus U. A lightening portion 14a is provided between the inner surface 12a and the convex portion 13a and the first bottom portion 10L, and a lightening portion 14b is provided between the inner surface 12b and the convex portion 13b and the first bottom portion 10L. Has been. The lightening portions 14a and 14b are holes penetrating in the vertical direction, in other words, holes penetrating in the normal direction of the bottom surface of the image forming apparatus U. The lightening portion 14a is positioned below the image forming apparatus U even when the gap between the front surface of the image forming apparatus U and the inner surface 12a is maximized by the image forming apparatus U moving backward with respect to the cushioning material 1B. To do. The lightening portion 14b is located below the image forming apparatus U even when the gap between the left side surface of the image forming apparatus U and the inner surface 12b becomes maximum due to the image forming apparatus U moving to the right with respect to the cushioning material 1B. Located in. The thickness H2 in the up-down direction is formed thicker than the thickness H1 of the convex portion 13b on the front side of the lightening portion 14b and the rear side of the lightening portion 14b.

The second corner portion 11FR protects the lower right front corner of the image forming apparatus U and its periphery. The second corner portion 11FR has a wall 11c extending in the left-right direction and a wall 11d extending in the front-rear direction. The wall 11c has an inner surface 12c along the YZ plane, and the wall 11d has an inner surface 12d along the XZ plane. The inner surface 12c and the inner surface 12d are an example of the first facing surface according to the present invention, and are also an example of the second facing surface according to the present invention. The second corner portion 11FR has a convex portion 13c protruding rearward from the inner surface 12c and a convex portion 13d protruding leftward from the inner surface 12d. The convex portion 13c and the convex portion 13d are formed in a shape in which a rectangular parallelepiped is chamfered. The bottom surface of the convex portion 13c and the convex portion 13d and the bottom surface of the second bottom portion 10R have the same vertical position. Further, the thicknesses of the convex portions 13c and the convex portions 13d in the vertical direction are the same and are thinner than the thickness H4 of the second bottom portion 10R in the vertical direction. In the convex portion 13c, in a state where the cushioning material 1B is not cracked, the gap between the front surface of the image forming apparatus U and the inner surface 12c is maximum because the image forming apparatus U moves rearward with respect to the cushioning material 1B. Even if it becomes, it is located below the image forming apparatus U and does not contact the bottom surface of the image forming apparatus U. The convex portion 13d is a gap between the right side surface of the image forming apparatus U and the inner surface 12d when the image forming apparatus U is moved leftward with respect to the buffer material 1B in a state where the buffer material 1B is not cracked. Even when the maximum value is maximized, it is located below the image forming apparatus U and does not contact the bottom surface of the image forming apparatus U. A lightening portion 14c is provided between the inner surface 12c and the convex portion 13c and the second bottom portion 10R, and a lightening portion 14d is provided between the inner surface 12d and the convex portion 13d and the second bottom portion 10R. Has been. The lightening portions 14c and 14d are holes penetrating in the vertical direction, in other words, holes penetrating in the normal direction of the bottom surface of the image forming apparatus U. The lightening portion 14c is positioned below the image forming apparatus U even when the gap between the front surface of the image forming apparatus U and the inner surface 12c becomes maximum due to the image forming apparatus U moving backward with respect to the cushioning material 1B. To do. The lightening portion 14d is located below the image forming apparatus U even when the gap between the right side surface of the image forming apparatus U and the inner surface 12d becomes maximum due to the image forming apparatus U moving leftward with respect to the cushioning material 1B. Located in.

The third corner portion 11RL protects the lower left rear corner of the bottom surface of the image forming apparatus U and its periphery. The third corner portion 11RL has a wall 11e extending in the left-right direction and a wall 11f extending in the front-rear direction. The wall 11e has an inner surface 12e along the YZ plane, and the wall 11f has an inner surface 12f along the XZ plane. The inner surface 12e and the inner surface 12f are examples of the first facing surface according to the present invention and also examples of the second facing surface according to the present invention. The third corner portion 11RL has a convex portion 13e protruding forward from the inner surface 12e and a convex portion 13f protruding rightward from the inner surface 12f. The convex portion 13e and the convex portion 13f are formed in a shape in which a rectangular parallelepiped is chamfered. The bottom surfaces of the convex portions 13e and 13f and the bottom surface of the first bottom portion 10L have the same vertical position. Further, the thickness of the convex portions 13e and the convex portion 13f in the vertical direction is the same and is thinner than the thickness H4 of the first bottom portion 10L in the vertical direction. In the convex portion 13e, in a state where the cushioning material 1B is not cracked, the gap between the rear surface of the image forming apparatus U and the inner surface 12e is maximum because the image forming apparatus U moves forward with respect to the cushioning material 1B. Even if it becomes, it is located below the image forming apparatus U and does not contact the bottom surface of the image forming apparatus U. In the state where the buffer material 1B is not cracked, the convex portion 13f has a gap between the left side surface of the image forming apparatus U and the inner surface 12f due to the image forming apparatus U moving to the right with respect to the buffer material 1B. Even when the maximum value is maximized, it is located below the image forming apparatus U and does not contact the bottom surface of the image forming apparatus U. A lightening portion 14e is provided between the inner surface 12e and the convex portion 13e and the first bottom portion 10L, and a lightening portion 14f is provided between the inner surface 12f and the convex portion 13f and the first bottom portion 10L. Has been. The lightening portions 14e and 14f are holes penetrating in the vertical direction, in other words, holes penetrating in the normal direction of the bottom surface of the image forming apparatus U. The lightening portion 14e is located below the image forming apparatus U even when the gap between the front surface of the image forming apparatus U and the inner surface 12e is maximized by moving the image forming apparatus U forward with respect to the cushioning material 1B. To do. The lightening portion 14f is located below the image forming apparatus U even when the gap between the left side surface of the image forming apparatus U and the inner surface 12f becomes maximum due to the image forming apparatus U moving to the right with respect to the cushioning material 1B. Located in. A thickness H2 in the up-down direction is formed thicker than the thickness H1 of the convex portion 13f on the front side of the lightening portion 14f and the rear side of the lightening portion 14f.

The fourth corner portion 11RR protects the lower right rear corner of the bottom surface of the image forming apparatus U and the periphery thereof. The fourth corner portion 11RR has a wall 11g extending in the left-right direction and a wall 11h extending in the front-rear direction. The wall 11g has an inner surface 12g along the YZ plane, and the wall 11h has an inner surface 12h along the XZ plane. The inner surface 12g and the inner surface 12h are examples of the first facing surface according to the present invention and also examples of the second facing surface according to the present invention. Further, the fourth corner portion 11RR has a convex portion 13g protruding forward from the inner surface 12g and a convex portion 13h protruding leftward from the inner surface 12h. The convex portion 13g and the convex portion 13h are formed in a shape in which a rectangular parallelepiped is chamfered. The bottom surfaces of the convex portions 13g and 13h and the bottom surface of the first bottom portion 10L have the same vertical position. Further, the vertical thicknesses of the convex portion 13g and the convex portion 13h are the same, and are smaller than the vertical thickness H4 of the second bottom portion 10R, that is, the thickness H1. In the convex portion 13g, in a state where the cushioning material 1B is not cracked, the gap between the rear surface of the image forming apparatus U and the inner surface 12g is maximum because the image forming apparatus U moves forward with respect to the cushioning material 1B. Even if it becomes, it is located below the image forming apparatus U and does not contact the bottom surface of the image forming apparatus U. In the convex portion 13h, in a state where the cushioning material 1B is not cracked, the gap between the rear surface of the image forming apparatus U and the inner surface 12h is caused by the movement of the image forming apparatus U leftward with respect to the cushioning material 1B. Even when it reaches the maximum, it is located below the image forming apparatus U and does not contact the bottom surface of the image forming apparatus U. A lightening portion 14g is provided between the inner surface 12g and the convex portion 13g and the second bottom portion 10R, and a lightening portion 14h is provided between the inner surface 12h and the convex portion 13h and the second bottom portion 10R. Has been. The lightening portions 14g and 14h are holes penetrating in the vertical direction, in other words, holes penetrating in the normal direction of the bottom surface of the image forming apparatus U. The lightening portion 14g is positioned below the image forming apparatus U even when the gap between the rear surface of the image forming apparatus U and the inner surface 12g becomes maximum due to the movement of the image forming apparatus U forward with respect to the cushioning material 1B. To do. The lightening portion 14h is located below the image forming apparatus U even when the gap between the right side surface of the image forming apparatus U and the inner surface 12h becomes maximum due to the image forming apparatus U moving leftward with respect to the cushioning material 1B. Located in.

In the following description, the convex portions 13a to 13h will be referred to as the convex portions 13 when it is not necessary to distinguish them from each other, and the thinned portions 14a to 14h will be referred to as the thin meat portions when it is not necessary to distinguish them from each other. It is referred to as section 14. The convex portion 13 is an example of the convex portion and the remaining portion according to the present invention. The lightening portion 14 is an example of the lightening portion and the guiding portion according to the present invention.

(Operation of cushioning material 1B)
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 materials 1U and 1B soften the impact caused by dropping and protect the image forming apparatus U. Here, since Styrofoam, which is widely used as a cushioning material, has poor ductility, there is a risk that it will be cracked by the impact of falling. If the cushioning material breaks, the cracked cushioning material may move inside the packing materials 2U and 2B, and it may become impossible to protect the object to be packed.

In this embodiment, by providing the convex portion 13 and the thinned portion 14 on the cushioning material 1B, even if the cushioning material 1B is cracked, the cracked cushioning material 1B is prevented from moving inside the packing materials 2U, 2B. I chose

FIG. 8 is a diagram showing an example of a crack position when the packing materials 2U and 2B containing the image forming apparatus U protected by the cushioning material 1U and the cushioning material 1B are dropped from the left front corner. FIG. 8A shows the positions of cracks in the cushioning material 1B according to the present embodiment, and FIG. 8B shows cracks when the cushioning material 1B does not have the convex portion 13 and the lightening portion 14. The position is shown, and the position of the crack is shown by a thick line C.

When the packing materials 2U and 2B accommodating the image forming apparatus U fall from the left front corner, for example, as shown in FIG. 8, a crack is generated at the intersection of the wall 11a and the wall 11b in the first corner portion 11FL, and the inner surface 12a is broken. The crack propagates in the front-rear direction along the lower end of the inner surface 12b from the intersection of the inner surface 12b and the inner surface 12b.

As shown in FIG. 8B, when the cushioning material 1B has a shape that does not have the convex portion 13 and the lightening portion 14, the cracks C that have propagated separate the wall 11b from the cushioning material 1B. The wall 11b separated from the cushioning material 1B becomes movable in the front-rear direction and may move rearward.

In the present embodiment, as shown in FIG. 8A, the crack C propagates from the intersecting position of the inner surface 12a and the inner surface 12b, and the crack C is transmitted. The convex portion 13 and the thinned portion 14 are formed at a position close to the intersecting position. As shown in FIG. 8B, when the cushioning material 1B has the convex portion 13 and the lightening portion 14, the propagated crack C reaches the lightening portion 14b, but the lightening portion 14b penetrates. Since it is a hole, the crack C is not transmitted to the convex portion 13b, and the wall 11b is separated from the cushioning material 1B with the convex portion 13b. The wall 11b separated from the cushioning material 1B is movable in the front-rear direction, but even when the gap between the wall 11b and the image forming apparatus U in the packing material 2B in the left-right direction is maximized, the convex portion 13b remains It is located between the packing material 2B and the image forming apparatus U, and the convex portion 13b is caught on the peripheral portion of the lightening portion 14b, so that the movement in the front-rear direction is suppressed, and the left front corner of the bottom surface of the image forming apparatus U is suppressed. Protect its surroundings. Further, the wall 11b separated from the cushioning material 1B can be moved in the vertical direction, but even when the gap between the packing material 2B and the image forming apparatus U in the left-right direction is maximized, the convex portion 13b causes the packing material 2B to move. Located between the image forming apparatus U and the image forming apparatus U, and the convex portion 13b is caught on the bottom surface of the image forming apparatus U, so that the vertical movement is suppressed and the left front corner of the bottom surface of the image forming apparatus U and its periphery are protected. ..

Even if the crack C propagates in the front-rear direction along the lower end of the inner surface 12b from the position where the inner surface 12a and the inner surface 12b intersect, the convex portion 13a and the lightening portion 14a are present in the direction in which the crack C propagates. The wall 11a is separated from the cushioning material 1B with the portion 13a. In this case, the wall 11a separated from the cushioning material 1B can be moved in the left-right direction, but even if the space between the wall 11a and the image forming apparatus U in the packing material 2B in the front-rear direction is maximized, the wall 11a is convex. Since the portion 13a is located between the packing material 2B and the image forming apparatus U, and the convex portion 13a is caught on the peripheral portion of the lightening portion 14a, the lateral movement is suppressed and the bottom surface of the image forming apparatus U is suppressed. Protect the left front corner and its surroundings. Further, the wall 11a separated from the cushioning material 1B can be moved in the vertical direction, but even when the gap between the packing material 2B and the image forming apparatus U in the front-rear direction is maximized, the convex portion 13a causes the packing material 2B to move. Between the image forming apparatus U and the image forming apparatus U, and the convex portion 13a is caught on the bottom surface of the image forming apparatus U, so that the vertical movement is suppressed and the left front corner of the bottom surface of the image forming apparatus U and its periphery are protected. ..

As described above, the cushioning material 1B moves inside the packing materials 2U and 2B even if the cushioning material 1B is separated by an impact from the outside, as compared with the configuration that does not have the convex portion 13 and the lightening portion 14. Is suppressed, and the image forming apparatus U is protected from the impact of dropping.

[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. In addition, you may combine each of the above-mentioned embodiment and the following modified examples.

In the embodiment described above, the lightening portion 14 is a hole penetrating in the vertical direction, but is not a penetrating hole, but is formed thinner in the vertical direction than the first bottom portion 10L, the second bottom portion 10R, and the convex portion 13. It may be configured. When the lightening portion 14 is not a hole penetrating in the vertical direction, and the thickness of the lightening portion 14 in the vertical direction is a thickness H3 as shown in FIG. 9, the thickness H3 is equal to the thickness of the convex portion 13. The thickness is preferably 30% or less. In the case of this configuration, since the lightening portion 14 of the convex portion 13 is thinner than the convex portion 13 in the vertical direction, a crack is induced in the lightening portion 14 and the convex portion 13 remains on the wall.

In the above-described embodiment, the shape of the convex portion 13 is a rectangular parallelepiped shape, but may be another shape such as a rectangular parallelepiped shape, a semi-cylindrical shape, or a polygonal prism shape. Further, in the above-described embodiment, the shape of the lightening portion 14 is concave when viewed from above, but the shape is not limited to the concave shape, and the convex portion 13 included in the portion separated from the cushioning material 1B has the lightening portion. Other shapes such as an annular shape may be used as long as the shape has the contour of 14.

In the present invention, the periphery of the lightening portion 14a and the periphery of the lightening portion 14e may be formed with a portion that is thinner in the vertical direction than the first bottom portion 10L. Further, in the present invention, the portions around the lightening portion 14c, the lightening portion 14d, the lightening portion 14g, and the lightening portion 14h are thinner than the second bottom portion 10R in the vertical direction. May be formed.

In the present invention, also in the cushioning material 1U, the convex portion 13 and the thinned portion 14 may be provided as in the cushioning material 1B.

In the embodiment described above, the upper surface of the convex portion 13 is not in contact with the bottom surface of the image forming apparatus U when the cushioning material 1B is not cracked. It may be thicker than the form, and the convex portion 13 may be in contact with the bottom surface of the image forming apparatus U in a state where the cushioning material 1B is not cracked.

In the above-described embodiment, the cushioning material 1U and the cushioning material 1B having the convex portions 13 and the lightening portions 14 protect the image forming apparatus U. However, the configuration for protecting the image forming apparatus U is the same as that of the embodiment. It is not limited to the configuration. For example, the cushioning material 1B rotated about the Y axis by 90 degrees is formed into a shape that fits on the front surface of the image forming apparatus U, and the image forming apparatus U has a right front lower corner, a left front lower corner, a right front upper corner, and a left front upper. The periphery of the corner and the front surface of the image forming apparatus U may be protected. Further, the cushioning material 1B rotated by 90 degrees about the Y axis is formed into a shape that fits on the rear surface of the image forming apparatus U, and around the lower right rear corner, around the lower left rear corner, around the upper right rear corner of the image forming apparatus U. Also, the periphery of the left rear upper corner and the rear surface of the image forming apparatus U may be protected.

In this case, in the cushioning material that protects the front surface of the image forming apparatus U, the convex portion 13 and the lightening portion 14 are located on the front side of the image forming apparatus U. Even if the wall having the convex portion 13 is separated in the cushioning material, the convex portion 13 is caught around the lightening portion 14, so that the separated wall is prevented from moving in the vertical direction and the horizontal direction, and the convex portion 13 is Since it is caught on the front surface of the image forming apparatus U, the backward movement is also suppressed. Regarding the cushioning material that protects the rear surface of the image forming apparatus U, the convex portion 13 and the thinned portion 14 are located on the rear side of the image forming apparatus U. Even if the wall having the convex portion 13 is separated in the cushioning material, the convex portion 13 is caught around the lightening portion 14, so that the movement in the vertical direction and the horizontal direction is suppressed, and the convex portion 13 of the image forming apparatus U is suppressed. As it is caught on the front, movement in the front direction is also suppressed. The cushioning material having the convex portions 13 and the thinned portions 14 may be configured to protect the right side surface and the left side surface of the image forming apparatus U, instead of protecting the front surface and the rear surface of the image forming apparatus U. ..

In the embodiment described above, the bottom surface of the cushioning material 1B is not limited to the flat shape. FIG. 10: is the figure which showed the cross section when the buffer material 1B which concerns on this modification is cut|disconnected in the same position as the AA line of FIG. In this modification, as shown in FIG. 10, the bottom surfaces of the first bottom portion 10L and the second bottom portion 10R are the bottom surfaces of the first corner portion 11FL, the second corner portion 11FR, the third corner portion 11RL, and the fourth corner portion 11RR. The structure may be located further below. Also in this modification, the vertical thickness H1 of the convex portion 13 is smaller than the vertical thickness H4 of the first bottom portion 10L. In the case of this configuration, when the wall having the convex portion 13 is separated, the convex portion 13, the first bottom portion 10L, and the first bottom portion 10L and the first bottom portion 10L so that the upper surface of the convex portion 13 is not located below the position of the bottom surface of the convex portion 13 before separation. It is preferable to configure the vertical thickness of the second bottom portion 10R.

Although the cushioning material 1U protects the upper surface side of the image forming apparatus U in the above-described embodiment, the packing material 2U may also protect the image forming apparatus U. FIG. 11 is a development view of the packaging material 2Ua according to the modified example, and the alternate long and short dash line shown in FIG. 11 indicates a mountain-folded portion. FIG. 12 is a perspective view of the packing material 2Ua.

The packing material 2Ua has an inner flap 21a serving as a lid, an inner flap 21b, an outer flap 22a, and an outer flap 22b. Moreover, the packaging material 2Ua has a side wall 23a, a side wall 23b, a side wall 23c, and a side wall 23d. The side wall 23a protects the left side surface of the image forming apparatus U, and the side wall 23b protects the front surface of the image forming apparatus U. The side wall 23c protects the right side surface of the image forming apparatus U, and the side wall 23d protects the rear surface of the image forming apparatus U. The inner flap 21a and the inner flap 21b serve as an inner lid in the packing material 2Ua, and the outer flap 22a and the outer flap 22b serve as an outer lid in the packing material 2Ua.

The inner flap 21a has a lid portion 211a serving as a lid and two bent portions 210a. Further, the inner flap 21b has a lid portion 211b serving as a lid and two bent portions 210b. A cut is provided between the lid portion 211a and the bent portion 210a, and a cut is also provided between the lid portion 211b and the bent portion 210b.

The bent portion 210a and the bent portion 210b are bent at the portion indicated by the alternate long and short dash line in FIG. 11, are formed into a rectangular tube shape as shown in FIG. 12, and are located inside the packing material 2Ua. When the forces at the four corners of the upper surface are applied, compared with the packaging material 2U that does not include the bent portion 210a formed in the shape of a square tube and the folded portion 210b, the bent portion 210a formed in the shape of a square tube and the bent portion 210a. 210b absorbs the force, making it difficult for the impact to be transmitted to the object to be packed.

In the packing material 2Ua, continuous holes may be provided at the position of the break between the lid portion 211a and the bent portion 210a and the position of the break between the lid portion 211b and the bent portion 210b. In the case of this configuration, when a cut is made along the continuous hole, the lid part 211a is separated from the bent part 210a, the lid part 211b is separated from the bent part 210b, and the bent part 210a and the bent part 210a are bent into the shape of the rectangular tube as described above. The portion 210b can be formed. In addition, when a break is not made along a continuous hole, the inner flap 21a and the inner flap 21b are used as a normal inner flap that does not have a bent portion 210a and a bent portion 210b formed in the shape of a rectangular tube. it can.

1U... Buffer material, 1B... Buffer material, 2U, 2Ua... Packing material, 2B... Packing material, 10L... 1st bottom part, 10R... 2nd bottom part, 11FL... 1st corner part, 11FR... 2nd corner part, 11RL... Third corner portion, 11RR... Fourth corner portion, 11a-11h... Wall, 12a-12h... Inner surface, 13a-13h... Convex portion, 14a-14h... Lightening portion, 15... Hole, 16... Third bottom portion, 17F ... 1st connection part, 17R... 2nd connection part, 21a... Inner flap, 21b... Inner flap, 22a... Outer flap, 22b... Outer flap, 23a-23d... Side wall, 210a, 210b... Bending part, 211a, 211a... Lid, U... Image forming apparatus

Claims (12)

A first protection part for protecting the first surface of the object to be packed,
A second protection part for protecting a second surface intersecting with the first surface;
A lightening portion between the first protection portion and the second protection portion, which is lightened in a direction normal to the first surface;
A cushioning material, comprising: a protrusion protruding toward the object to be packed between the second protection portion and the lightening portion. The second protection portion has a first facing surface facing the second surface and a second facing surface facing a third surface intersecting the second surface,
The cushioning material according to claim 1, wherein the lightening portion is at a position where a crack is transmitted at a position where the first facing surface and the second facing surface intersect. The second protection portion has a first facing surface facing the second surface and a second facing surface facing a third surface intersecting the second surface,
The convex portion projects from a crossing position where the first facing surface and the second facing surface intersect at a position closer to the crossing position than a position where a crack may occur in the direction of the first facing surface. The described cushioning material. The cushioning member according to claim 1, wherein the lightening portion is between the convex portion and the first protection portion. The first surface is a bottom surface,
The cushioning material according to claim 1, wherein the lightening portion is located below the object to be packed even when the gap between the object to be packed and the second surface is maximized. The first surface is a bottom surface,
The cushioning material according to claim 1, wherein the convex portion is located below the article to be packaged even when the gap between the article to be packaged and the second surface is maximized. The cushioning material according to claim 6, wherein an upper surface of the convex portion is not in contact with a bottom surface of the article to be packed in a state where no crack is generated. The cushioning material according to claim 6, wherein an upper surface of the convex portion is in contact with a bottom surface of the article to be packed. The first surface is a bottom surface,
The cushioning material according to claim 1, wherein a vertical thickness of the convex portion is thinner than a vertical thickness of the first protective portion. The cushioning material according to claim 1, wherein the lightening portion is a hole penetrating in a direction normal to the first surface. A first protection part for protecting the first surface of the object to be packed,
A second protection part for protecting a second surface intersecting with the first surface;
A guide part between the first protection part and the second protection part for guiding a crack;
A cushioning material, which is between the first protection portion and the second protection portion, is less likely to be cracked than the guide portion, and is the remaining portion that is not separated from the second protection portion when the guide portion is broken. A packing material for packing an object to be packed and the cushioning material according to any one of claims 1 to 10,
The said convex part is a packing material arrange|positioned between the said packaging material and the said to-be-packaged object, even when the space|gap between the said packaging material and the to-be-packaged object becomes the largest.