Packaging materials

Abstract

A packing member (100) has a pair of retention parts (230) folded from both respective side end edges of a pair of first wall parts (210). The pair of retention parts (230) have an opposed part (230a) arranged opposed to a second wall part (220), and an insertion piece (230). The second wall part (220) has a wall part slit (221). By insertion of the insertion piece (231) into the wall part slit (221), the first wall parts (210) and the second wall part (220) are retained in a standing state.

Description

[Technical field]

[0001] The present invention relates to a packaging member. [Background technology]

[0002] 2. Description of the Related Art Packaging materials made of corrugated cardboard sheets have been known in the art. Such packaging materials are disclosed in, for example, Patent Document 1.

[0003] The packaging member of Patent Document 1 includes a plurality of parts made of cardboard sheets, and is formed by combining the plurality of parts. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-107674 A Summary of the Invention [Problem to be solved by the invention]

[0005] In Patent Document 1, when assembling the packaging material, each of the multiple parts must be assembled to an appropriate mating part, which is inefficient. Also, when disassembling the packaging material and disposing of it, each of the multiple parts must be removed from the mating part, which is inefficient. Furthermore, when the packaging material is disassembled, it is divided into multiple parts, so tasks such as assembling the multiple parts must be performed, which makes disposal difficult.

[0006] The present invention has been made to solve the above problems, and has an object to provide a packaging material that can improve the workability of assembly and disassembly (disposal). [Means for solving the problem]

[0007] In order to achieve the above object, a packaging member according to one aspect of the present invention is a packaging member having a storage area formed by folding a single cardboard sheet, and includes a rectangular bottom and a wall portion that is folded from the periphery of the bottom and stands upward to form a side surface of the storage area. The wall portion has a pair of first wall portions that are arranged opposite to each other in a first direction across the storage area and are folded inwardly into a rectangular tube shape, a pair of second wall portions that are arranged opposite to each other in a second direction perpendicular to the first direction across the storage area, and a pair of holding portions that are folded from both side edges in the second direction of each of the pair of first wall portions toward the first direction. The pair of holding portions has an opposing portion that is arranged opposite to the inner side surface of the second wall portion, and an insertion piece that is further folded toward the second direction on the side opposite to the connection side with the first wall portion. The second wall portion has a wall portion slit. By inserting the insertion piece into the wall portion slit, the first wall portion and the second wall portion are held in an upright state. Effect of the Invention

[0008] The configuration of the present invention can improve the workability of assembling and disassembling (disposal) the packaging material. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a perspective view of a packaging member according to one embodiment. [Diagram 2] 2 is a perspective view of the packaging member of FIG. 1 in which an object to be packed is accommodated. FIG. [Diagram 3] FIG. 2 is a plan view of a packaging member according to an embodiment, as viewed from above. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Diagram 5] 2 is a perspective view of a side wall portion and its surroundings according to one embodiment of the packaging member. FIG. [Figure 6] 1 is a perspective view of a holding portion and its surroundings of a packaging member according to one embodiment. FIG. [Figure 7] FIG. 4 is an enlarged view of an area B enclosed by a dashed line in FIG. [Figure 8] 1 is a development view (plan view of a cardboard sheet) of a packaging member according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The packaging member 100 of this embodiment will be described below with reference to Fig. 1 to Fig. 7. In the following description, the X direction in the drawings is defined as the left-right direction, the Y direction is defined as the front-rear direction, and the Z direction is defined as the up-down direction. The Y direction (front-rear direction) corresponds to the "first direction", and the X direction (left-right direction) faces the "second direction".

[0011] In addition, in the X direction, the +X side is defined as left and the -X side is defined as right. In the Y direction, the +Y side is defined as front and the -Y side is defined as back. In the Z direction, the +Z side is defined as up and the -Z direction is defined as down.

[0012] <Outline of packaging material configuration> As shown in Figs. 1 to 3, the packaging member 100 of this embodiment has a storage area 10 in which a packaged object 1000 (see Fig. 2) is stored. In Fig. 2, the packaged object 1000 has a dot pattern. The storage area 10 has a rectangular shape (including a substantially rectangular shape) with the left-right direction as the longitudinal direction when viewed from above. However, this is not limited thereto. The storage area 10 may have a rectangular shape with the front-rear direction as the longitudinal direction when viewed from above. Moreover, the storage area 10 may have a square shape when viewed from above.

[0013] The packaging member 100 is made of a single corrugated cardboard sheet 110 (see FIG. 8). That is, the storage area 10 is formed by folding the single corrugated cardboard sheet 110. Details will be described later.

[0014] The packaging member 100 has a rectangular bottom 1. The packaged object 1000 is placed on the upper surface of the bottom 1. That is, the bottom 1 covers the packaged object 1000 from below. When the packaged object 1000 is stored in the storage area 10, the bottom surface of the packaged object 1000 is protected by the bottom 1.

[0015] The packaging member 100 also includes a wall portion 2. The wall portion 2 extends from the periphery of the bottom portion 1 and stands vertically (including approximately vertically) upward from the bottom portion 1. The wall portion 2 is a portion of the cardboard sheet 110 (see FIG. 8) that stands upward by being folded from the periphery of the bottom portion 1. The wall portion 2 is held in an upright state, thereby forming the side surface of the storage area 10. In other words, the wall portion 2 surrounds the storage area 10 when viewed from above. When the object 1000 is stored in the storage area 10, the side surface of the object 1000 is protected by the wall portion 2.

[0016] When the packaged object 1000 is contained in the storage area 10, the packaged object 1000 comes into contact with the inner surface of the wall 2 (the surface that defines the storage area 10). This prevents the packaged object 1000 from shifting out of position (wobbling) inside the storage area 10. If a gap occurs between the inner surface of the wall 2 and the packaged object 1000, the gap may be filled by inserting a cushioning material (not shown) or the like into the gap.

[0017] The wall portion 2 has a pair of walls 210 disposed facing each other in the front-rear direction (corresponding to the "first direction") across the storage area 10. In the following description, when it is necessary to distinguish between the front side and the rear side of the wall portion 2, the front wall portion 2 is given the reference number 211 and referred to as the front wall portion 211 (see FIG. 3), and the rear wall portion 2 is given the reference number 212 and referred to as the rear wall portion 212 (see FIG. 3). The pair of walls 210 (i.e., the front wall portion 211 and the rear wall portion 212) correspond to the "first wall portion."

[0018] Furthermore, the wall portion 2 has a pair of wall portions 220 disposed opposite each other in the left-right direction (corresponding to the "second direction") across the storage area 10. The left wall portion 220 and the right wall portion 220 have the same structure. In the following description, the left and right wall portions 220 are referred to as side wall portions 220. The pair of wall portions 220 (i.e., side wall portions 220) corresponds to the "second wall portion."

[0019] First, the front wall portion 211 and the rear wall portion 212 will be described.

[0020] The front wall 211 and the rear wall 212 extend parallel (or substantially parallel) in the left-right direction when viewed from above. When the object 1000 is stored in the storage area 10, the front wall 211 and the rear wall 212 sandwich the object 1000 in the front-rear direction.

[0021] The front wall portion 211 and the rear wall portion 212 are bent inward into a rectangular cylindrical shape, resulting in a structure as shown in Fig. 4. The configurations of the front wall portion 211 and the rear wall portion 212 are basically the same as each other. For this reason, the following description will be given without illustrating the front wall portion 211.

[0022] The front wall portion 211 has an outer wall 210a and an inner wall 210b. The outer wall 210a is a portion located outside the inner wall 210b with respect to the storage area 10, and the inner wall 210b is a portion that partitions the storage area 10. Similarly, the rear wall portion 212 has an outer wall 210a and an inner wall 210b. The lower end of the outer wall 210a is connected to the bottom portion 1. The boundary between the bottom portion 1 and the outer wall 210a is bent, so that the outer wall 210a stands upward from the bottom portion 1.

[0023] The upper end of the outer wall 210a is connected to the upper end of the inner wall 210b via the upper end 210c. The upper end 210c is bent perpendicularly (including approximately perpendicularly) to the outer wall 210a. The inner wall 210b extends downward and contacts the bottom 1 by being bent perpendicularly (including approximately perpendicularly) to the upper end 210c. As a result, the inner wall 210b faces the outer wall 210a at a distance in the front-rear direction and stands upright from the bottom 1. The lower end of the inner wall 210b is connected to the lower end 210d. The lower end 210d is bent perpendicularly (including approximately perpendicularly) to the inner wall 210b so as to extend toward the outer wall 210a. In FIG. 4, the lower end 210d and the portion contacting the lower end 210d are shown separated from each other to make the drawing easier to see.

[0024] When an impact is applied to the front wall 211 or the rear wall 212 from the outside to the inside of the storage area 10, the upper end 210c and the lower end 210d are crushed first, respectively. This cushions the impact on the packaged item 1000. That is, the upper end 210c and the lower end 210d are each folded inward into a square tube shape, thereby functioning as a cushioning material.

[0025] Additionally, the front wall portion 211 and the rear wall portion 212 each have an upper protruding piece 210e (see FIGS. 1 to 3) that protrudes upward. The upper protruding piece 210e protrudes upward beyond the upper end portion 210c. The upper protruding piece 210e of the front wall portion 211 is disposed approximately in the center in the left-right direction. Similarly, the upper protruding piece 210e of the rear wall portion 212 is disposed approximately in the center in the left-right direction.

[0026] When an impact is applied from above the packaging member 100, the impact is first applied to the upper protruding piece 210e, causing the upper protruding piece 210e to collapse. This cushions the impact on the packaged item 1000. That is, the upper protruding piece 210e functions as a cushioning material that cushions the impact from above.

[0027] The front wall portion 211 and the rear wall portion 212 each have a lower protruding piece 210f (see Figs. 1 and 2). Although the lower protruding piece 210f of the rear wall portion 212 is not shown in Figs. 1 and 2, the rear wall portion 212 is also provided with a lower protruding piece 210f. The lower protruding pieces 210f of the front wall portion 211 are disposed on the left and right sides, respectively. Similarly, the lower protruding pieces 210f of the rear wall portion 212 are disposed on the left and right sides, respectively.

[0028] The lower protruding piece 210f is a part of the lower end of the outer wall 210a that protrudes downward from the other parts. Specifically, the lower protruding piece 210f is cut and raised from the bottom 1 and protrudes downward from the lower surface of the bottom 1.

[0029] As a result, when an impact is applied from below the packing member 100, for example, when the packing member 100 is dropped with the bottom part 1 facing downward, the impact is applied to the lower protruding piece 210f first, causing the lower protruding piece 210f to be crushed. As a result, the impact on the packaged object 1000 is buffered. That is, the lower protruding piece 210f functions as a buffer material that buffers the impact from below.

[0030] Next, the pair of side walls 220 will be described.

[0031] The pair of side walls 220 extend parallel (including approximately parallel) in the front-rear direction when viewed from above. When the packaged object 1000 is stored in the storage area 10, the pair of side walls 220 sandwich the packaged object 1000 in the left-right direction.

[0032] The side wall portion 220 and its periphery have a structure as shown in Fig. 5. In Fig. 5, only a part of the bottom portion 1 and the side wall portion 220 are shown, and other portions are not shown.

[0033] The lower end of the side wall portion 220 is connected to the bottom portion 1. The boundary between the bottom portion 1 and the side wall portion 220 is bent, so that the side wall portion 220 stands upright from the bottom portion 1. The side wall portion 220 has a tongue piece 220a. The tongue piece 220a is formed by bending the upper end portion of the side wall portion 220 vertically (including approximately vertically) outward in the left-right direction. The front wall portion 211 and the rear wall portion 212 have a double structure having an outer wall 210a and an inner wall 210b, but the side wall portion 220 has a single-layer structure.

[0034] The left and right ends of the front wall 211 and the rear wall 212 protrude in a direction from the inside to the outside of the storage area 10 beyond the base of the lateral wall 220 (portion other than the tongue piece 220a). As a result, when an impact is applied to the packaging member 100 from the left or right, the left and right ends of the front wall 211 and the rear wall 212 are crushed, and the impact on the packaged item 1000 is buffered. That is, the left and right ends of the front wall 211 and the rear wall 212 function as buffer materials.

[0035] <Wall retention> The wall portion 2 is held in an upright position above the bottom portion 1 (i.e., in an upright position). In other words, the wall portion 2 is held so as not to tilt. The wall portion 2 has holding portions 230 to prevent tilting. One holding portion 230 is provided at each of the left and right ends of the front wall portion 211. Also, one holding portion 230 is provided at each of the left and right ends of the rear wall portion 212.

[0036] The holding portion 230 of the front wall portion 211 is a portion bent vertically (including approximately vertically) from the front wall portion 211 toward the rear along a fold line extending in the up-down direction. The holding portion 230 of the rear wall portion 212 is a portion bent vertically (including approximately vertically) from the rear wall portion 212 toward the front along a fold line extending in the up-down direction.

[0037] The holding portion 230 will be described in detail below with reference to Figs. 6 and 7. The holding portions 230 of the front wall portion 211 and the rear wall portion 212 have the same configuration. For this reason, the holding portion 230 of the front wall portion 211 will be described without showing a detailed diagram. Note that part of the tongue piece 220a is omitted in Fig. 7. Also, to make the drawing easier to see, the opposing portion 230a of the holding portion 230 and the lateral wall portion 220 are illustrated separated in the left-right direction, but in reality they contact each other.

[0038] The holding portion 230 is connected to the left-right edges of the inner wall 210b. The holding portion 230 extends from both left-right edges of the inner wall 210b, and extends in the front-rear direction by being bent vertically (including approximately vertically) from both left-right edges of the inner wall 210b in the front-rear direction. In other words, the holding portion 230 has a facing portion 230a that is arranged facing the inner surface of the lateral wall portion 220. The facing portion 230a is arranged inside the storage area 10. Specifically, the facing portion 230a is arranged at a position that contacts the packaged object 1000 stored in the storage area 10. Therefore, when the packaged object 1000 is stored in the storage area 10, the packaged object 1000 and the facing portion 230a come into contact with each other in the left-right direction (see FIG. 2).

[0039] Here, the side wall portion 220 has a wall slit 221. The wall slit 221 penetrates in the left-right direction (the plate thickness direction of the portion of the cardboard sheet 110 that forms the side wall portion 220). The wall slit 221 is an elongated hole that is long in the up-down direction, and is formed in approximately the center of the side wall portion 220 in the front-rear direction (see FIG. 5).

[0040] The holding portion 230 has a portion that is further bent in the left-right direction on the side opposite to the connection side with the wall portion 210 as an insertion piece 231. Specifically, the insertion piece 231 is formed by bending the facing portion 230a of the holding portion 230 vertically (including approximately vertically) outward in the left-right direction. The insertion piece 231 is inserted into the wall portion slit 221.

[0041] The opposing portion 230a of the holding portion 230 is disposed inside the storage area 10. Therefore, the insertion piece 231 is inserted into the wall slit 221 from the inside of the storage area 10. Then, by being inserted into the wall slit 221, the insertion piece 231 protrudes from the inside to the outside of the storage area 10. In other words, the insertion piece 231 protrudes outward in the left-right direction from the outer surface (the surface facing outward in the left-right direction) of the lateral wall portion 220. The tip position in the left-right direction of the insertion piece 231 is the same as (including approximately the same as) the tip positions of the left-right ends of the front wall portion 211 and the rear wall portion 212.

[0042] The opposing portion 230a of the holding portion 230 contacts the object 1000 inside the storage area 10, and is pressed from the inside to the outside of the storage area 10. Therefore, the insertion piece 231 is held in a state where it protrudes from the inside of the storage area 10 to the outside.

[0043] As a result, when an impact is applied to the packaging member 100 from the left or right direction, the insertion piece 231 is crushed together with the left or right ends of the front wall portion 211 and the rear wall portion 212. This cushions the impact on the packaged item 1000. That is, the insertion piece 231, together with the left or right ends of the front wall portion 211 and the rear wall portion 212, functions as a cushioning material that cushions the impact from the left or right direction.

[0044] Further, the respective insertion pieces 231 of the pair of holding parts 230 are inserted into the opposing wall slits 221. Specifically, the insertion pieces 231 of the holding parts 230 provided on the left side of each of the front wall part 211 and the rear wall part 212 are inserted into the wall slit 221 of the left lateral wall part 220. The insertion pieces 231 of the holding parts 230 provided on the right side of each of the front wall part 211 and the rear wall part 212 are inserted into the wall slit 221 of the right lateral wall part 220. That is, the respective insertion pieces 231 of the two holding parts 230 on the same side in the left-right direction are stacked together to be one and inserted into the same wall slit 221.

[0045] By inserting the insertion piece 231 into the wall slit 221, it is possible to prevent the front wall 211 and the rear wall 212 from tilting outwardly from the storage area 10. It is also possible to prevent the pair of side wall portions 220 from tilting outwardly from the storage area 10. That is, by inserting the insertion piece 231 into the wall slit 221, the front wall portion 211 and the rear wall portion 212 are each held in an upright state, and the pair of side wall portions 220 are each held in an upright state.

[0046] <Lid retention> As shown in Figs. 1 to 3, the packaging member 100 includes a lid 3. The lid 3 extends from the wall 2. The lid 3 covers a portion of the storage area 10 from above. For example, the lid 3 covers approximately the center in the left-right direction of the storage area 10 from above. When the object to be packaged 1000 is contained in the storage area 10, the lid 3 covers a portion of the object to be packaged 1000 (approximately the center in the left-right direction) from above.

[0047] For example, the lid portion 3 is connected to the upper end portion 210c of the rear wall portion 212 and extends from the upper end portion 210c of the rear wall portion 212. However, this is not limited thereto. The lid portion 3 may be connected to the upper end portion 210c of the front wall portion 211 and extend from the upper end portion 210c of the front wall portion 211. In a configuration in which the lid portion 3 is connected to the upper end portion 210c of the rear wall portion 212, the rear wall portion 212 corresponds to "one of the pair of first wall portions" and the front wall portion 211 corresponds to "the other of the pair of first wall portions." In addition, the upper protruding piece 210e of the front wall portion 211 corresponds to the "first upper protruding piece" and the upper protruding piece 210e of the rear wall portion 212 corresponds to the "second upper protruding piece." 1 to 3 and 8, the upper protruding piece 210e of the front wall portion 211 is given the reference symbol 2101e, and the upper protruding piece 210e of the rear wall portion 212 is given the reference symbol 2102e for distinction.

[0048] The lid 3 can be rotated so that the tip portion opposite to the connection portion with the upper end portion 210c of the rear wall portion 212 swings up and down, using the connection portion with the upper end portion 210c of the rear wall portion 212 as a fulcrum. In other words, the lid 3 can be rotated in a direction to close or open a part of the opening of the storage area 10. Specifically, the boundary between the upper end portion 210c of the rear wall portion 212 and the lid 3 is bent, and by adjusting the bending angle, a part of the opening of the storage area 10 can be closed or opened by the lid 3.

[0049] Here, the lid 3 has a lid slit 31. The lid slit 31 penetrates in the thickness direction of the portion of the cardboard sheet 110 that constitutes the lid 3. When a portion of the storage area 10 is covered from above with the lid 3, the lid slit 31 penetrates the lid 3 in the up-down direction.

[0050] Furthermore, in a state where a part of the accommodation area 10 is covered from above with the lid portion 3, the lid portion 3 is extended from the upper end portion 210c of the rear wall portion 212 and bent to reach the upper end portion 210c of the front wall portion 211. Specifically, the tip portion of the lid portion 3 on the opposite side to the connection side with the rear wall portion 212 reaches the upper end portion 210c of the front wall portion 211. Here, the lid portion slit 31 is formed in the tip portion of the lid portion 3. As a result, in a state where the tip portion of the lid portion 3 reaches the upper end portion 210c of the front wall portion 211, the upper protruding piece 210e (i.e., the first upper protruding piece 2101e) of the front wall portion 211 is inserted into the lid portion slit 31.

[0051] By inserting the upper protruding piece 210e (i.e., the first upper protruding piece 2101e) of the front wall 211 into the lid slit 31, the lid 3 is held in a state in which it covers part of the storage area 10 from above. In other words, the lid 3 closes part of the upper opening of the storage area 10.

[0052] The upper opening of the storage area 10 serves as an opening for inserting and removing the packaged object 1000 into the storage area 10. That is, after the packaged object 1000 is accommodated in the storage area 10, a portion of the upper opening of the storage area 10 is closed by the lid 3. This makes it possible to prevent the packaged object 1000 from jumping out of the upper opening of the storage area 10.

[0053] When viewed from above, the lid 3 covers only the approximate center of the storage area 10 in the left-right direction, and does not cover the other parts. In other words, the other parts are exposed. This makes it possible to easily check the inside state of the storage area 10 (the state of the packaged item 1000) while preventing the packaged item 1000 from jumping out of the upper opening of the storage area 10.

[0054] <Assembly of packaging materials> A development view of the packaging member 100 is shown in Fig. 8. The packaging member 100 is formed by folding the cardboard sheet 110 shown in Fig. 8. In Fig. 8, the upper surface of the bottom part 1 (the surface on which the packaged item 1000 is placed and the bottom surface of the storage area 10) is shown facing upward. In Fig. 8, the thick solid lines are cut lines, the dashed lines are valley fold lines, and the dashed dotted lines are mountain fold lines.

[0055] 8 and inserting the insertion piece 231 into the wall slit 221. In other words, there is no need to combine multiple parts, and no joining material such as adhesive is required. When discarding the packaging material 100, after removing the packaged object 1000 from the storage area 10, the packaging material 100 can be unfolded into a sheet by simply removing the insertion piece 231 from the wall slit 221.

[0056] In this embodiment, as described above, the wall 2 of the packaging member 100 has a pair of holding parts 230 that extend from both left and right edges of each of the pair of walls 210 (the front wall 211 and the rear wall 212) and are bent in the front-rear direction. That is, the front wall 211 has a pair of holding parts 230 that are bent in the front-rear direction from both left and right edges, and similarly, the rear wall 212 has a pair of holding parts 230 that are bent in the front-rear direction from both left and right edges. The pair of holding parts 230 have opposing parts 230a that are arranged facing the inner surface of the side wall 220 in the left-right direction. Furthermore, the pair of holding parts 230 have a part that is further bent toward the outside in the left-right direction on the side opposite to the connection side with the wall 210 as an insertion piece 231. The side wall 220 also has a wall slit 221 that penetrates in the left-right direction. The insertion piece 231 is inserted into the wall slit 221. As a result, the front wall portion 211 and the rear wall portion 212 are held in a state in which they stand upright from the bottom portion 1. Similarly, the side wall portion 220 is held in a state in which it stands upright from the bottom portion 1.

[0057] In this configuration, after folding a single cardboard sheet 110 along the valley fold lines and mountain fold lines, the front wall 211 and the rear wall 212 can be held standing upright from the bottom 1, and the side wall 220 can be held standing upright from the bottom 1, simply by inserting the insertion pieces 231 into the wall slits 221. In other words, a packaging member 100 having a storage area 10 can be easily obtained without combining multiple parts (using only a single part).

[0058] Furthermore, when disposing of the packaging material 100, the packaging material 100 can be unfolded into a sheet by simply removing the insertion pieces 231 from the wall slits 221. At this time, the packaging material 100 is not disassembled into multiple parts. Therefore, there is no need to separate or consolidate items to be disposed of.

[0059] As a result, it is possible to improve the workability in assembling and disassembling (disposal) the packaging material 100. In addition, since the packaging material 100 is made of a single material (corrugated cardboard sheet 110), the cost of the packaging material 100 can be reduced.

[0060] In this embodiment, as described above, the insertion piece 231 is inserted into the wall slit 221, so that the insertion piece 231 protrudes from the inside to the outside of the storage area 10. Specifically, the insertion piece 231 protrudes outward in the left-right direction beyond the outer surface of the lateral wall 220 (the surface opposite to the surface facing the storage area 10). This allows the insertion piece 231 to function as a cushioning material.

[0061] In this embodiment, as described above, the facing portion 230a of the holding portion 230 is disposed at a position that contacts the object 1000 to be packed contained in the storage area 10. This makes it possible to prevent the insertion piece 231 from shifting inward in the left-right direction and coming out of the wall slit 221. In other words, when the object 1000 to be packed is contained in the storage area 10, the packing material 100 can be prevented from unfolding (the packing material 100 will not unfold unintentionally).

[0062] In this embodiment, as described above, the insertion pieces 231 of the two holding parts 230 on the same side in the left-right direction are inserted into the same wall slit 221. This allows the number of processing locations of the wall slit 221 to be reduced.

[0063] In this embodiment, as described above, the upper protruding piece 210e (i.e., the first upper protruding piece 2101e) of the lid 3 is inserted into the lid slit 31, so that the lid 3 is held in a state in which the approximate center in the left-right direction of the storage area 10 as viewed from above is blocked from above. This makes it possible to prevent the lid 3 from opening unintentionally.

[0064] In this embodiment, as described above, the upper protruding piece 210e is provided on both the front wall 211 and the rear wall 212. The upper protruding piece 210e of the front wall 211 (i.e., the first upper protruding piece 2101e) and the upper protruding piece 210e of the rear wall 212 (i.e., the second upper protruding piece 2102e) are crushed when an impact is applied from above, and function as a buffer material that buffers the impact. That is, the upper protruding piece 210e (i.e., the first upper protruding piece 2101e) inserted into the lid slit 31 functions as a holding part that holds the lid 3 so that it does not move, and also functions as a buffer material. In this configuration, there is no need to separately form a holding part for the lid 3, so that the structure of the packaging member 100 can be prevented from becoming complicated.

[0065] In this embodiment, as described above, the front wall portion 211 and the rear wall portion 212 each have a lower protruding piece 210f that protrudes downward from the bottom portion 1. The lower protruding pieces 210f of the front wall portion 211 and the rear wall portion 212 are cut and raised from the bottom portion 1 and protrude downward from the bottom portion 1. When an impact is applied from below, the lower protruding pieces 210f of the front wall portion 211 and the rear wall portion 212 collapse to cushion the impact. This makes it possible to easily obtain a cushioning material that cushions impacts from below without preparing a separate part.

[0066] The embodiments disclosed herein are illustrative in all respects and should not be considered as limiting. The scope of the present invention is indicated by the claims, not by the description of the above embodiments, and further includes all modifications within the meaning and scope of the claims.

Claims

1. A packaging member having a storage area formed by folding a single corrugated sheet, A rectangular bottom portion; a wall portion that is bent upward from the periphery of the bottom portion and forms a side surface of the storage area; The wall portion is A pair of first wall portions disposed opposite to each other in a first direction with the storage area therebetween and bent inwardly into a rectangular cylindrical shape; a pair of second walls arranged opposite to each other in a second direction perpendicular to the first direction with the storage area therebetween; a pair of holding portions bent from both side edges of each of the pair of first walls in the second direction toward the first direction, The pair of holding portions include an opposing portion disposed opposite to an inner surface of the second wall portion; an insertion piece whose side opposite to the side connected to the first wall portion is further bent toward the second direction, The second wall portion has a wall slit, A packaging member in which the first wall portion and the second wall portion are held in an upright state by inserting the insertion piece into the wall portion slit.

2. The packaging member according to claim 1 , wherein the insertion piece protrudes from the inside to the outside of the storage area when inserted into the wall slit.

3. The packaging member according to claim 2 , wherein the facing portion is positioned so as to come into contact with an object contained in the containing area.

4. Each of the pair of first wall portions has a pair of the holding portions on both side edges in the second direction, The pair of second walls each have the wall slit, The packaging member according to claim 1 , wherein the insertion pieces of the pair of holding portions are inserted into the opposing wall slits.

5. a cover portion connected to an upper end portion of one of the pair of first walls and bent in the first direction; an upper end portion of the other of the pair of first walls has a first upper protruding piece protruding above the lid portion, the lid portion has a lid portion slit into which the first upper protruding piece is inserted, The packaging member according to claim 1 , wherein the first upper protruding piece is inserted into the lid slit, thereby holding the lid in a state in which the lid covers at least a portion of the storage area from above.

6. an upper end portion of one of the pair of first walls has a second upper protruding piece protruding above the lid portion; The packaging member according to claim 5 , wherein when an impact is applied from above, the first upper protruding piece and the second upper protruding piece are crushed to absorb the impact.

7. The pair of first wall portions each have a pair of lower protruding pieces that are cut and raised from the bottom portion and protrude downward from the bottom portion, The packaging member according to claim 1 , wherein the pair of lower protruding pieces are crushed when an impact is applied from below, thereby cushioning the impact.

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