PACKAGING MEMBER

INCORPORATION BY REFERENCE

This application is based on and claims the benefit of priority from Japanese Patent Application No. 2022-112353 filed on Jul. 13, 2022, the contents of which are hereby incorporated by reference.

BACKGROUND

The present disclosure relates to a packaging member.

Conventionally, there has been known a packaging member that has a partition plate disposed in a containing area of a packaging box. By disposing the partition plate in the containing area of the packaging box, the containing area can be divided into a plurality of containing areas. For example, in each of the thus obtained plurality of containing areas, a packaged object is contained.

SUMMARY

According to one aspect of the present disclosure, a packaging member includes a first partition plate and a second partition plate. The first partition plate is disposed in a containing area for containing a packaged object, and extends in a first direction. The second partition plate is disposed in the containing area, and extends in a second direction orthogonal to the first direction. The first partition plate has a first slit cut therein from an end thereof on one side in an up-down direction. The second partition plate has a second slit cut therein from an end thereof on an other side in the up-down direction. The second slit is inserted into the first slit to thereby couple the first partition plate and the second partition plate to each other in an intersecting manner. The first slit includes a one-side cut surface and an other-side cut surface that face each other. The one-side cut surface has an engagement protrusion protruding toward the other-side cut surface. The second partition plate has an engagement hole formed therein over the second slit, the engagement hole penetrating the second partition plate in a plate thickness direction thereof. With the second partition plate inserted in the first slit, the engagement protrusion is inserted into the engagement hole to thereby couple the first partition plate and the second partition plate to each other.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a packaging member according to an embodiment.

FIG. 2 is a plan view of a containing area of the packaging member according to the embodiment as seen from above.

FIG. 3 is a perspective view of a first partition plate and a second partition plate of the packaging member according to the embodiment.

FIG. 4 is an enlarged view of and around a first slit formed in the first partition plate of the packaging member according to the embodiment.

FIG. 5 is an enlarged view of and around a second slit formed in the second partition plate of the packaging member according to the embodiment.

FIG. 6 is a diagram showing a method of fitting the second partition plate with respect to the first partition plate in the packaging member according to the embodiment.

FIG. 7 is a diagram showing engagement between the first partition plate and the second partition plate of the packaging member according to the embodiment.

FIG. 8 is a development view (a plan view of a cardboard sheet) of the packaging member according to the embodiment.

FIG. 9 is a diagram showing a state in which part of the cardboard sheet shown in FIG. 8 has been folded.

FIG. 10 is a diagram showing a packaging member according to a modified example.

DETAILED DESCRIPTION

Hereinafter, with reference to FIGS. 1 to 9, a description will be given of a packaging member 100 according to an embodiment of the present disclosure. In the following description, a direction X in the drawings is defined as a left-right direction, a direction Y is defined as a front-back direction, and a direction Z is defined as an up-down direction. The direction X (the left-right direction) corresponds to “a second direction”, and the direction Y (the front-back direction) corresponds to “a first direction”. Further, in the following description, the meaning of the term “parallel” is not limited to “being strictly parallel”, but includes “being substantially parallel”. Further, the meaning of the term “orthogonal” is not limited to “being strictly orthogonal”, but includes “being substantially orthogonal”.

As shown in FIGS. 1 to 3, the packaging member 100 of the present embodiment has a containing area CA in which a packaged object (not shown) is contained. The containing area CA is divided into a plurality of areas (see FIG. 2).

The packaging member 100 includes a first partition plate 1 and a second partition plate 2. The packaging member 100 further includes a packaging box 3. An area inside the packaging box 3 corresponds to the containing area CA. The first partition plate 1 and the second partition plate 2 are disposed in the containing area CA, and divide the containing area CA into a plurality of areas.

Note that the packaging member 100 is made of a single cardboard sheet 100S (see FIG. 8). In other words, the single cardboard sheet 100S is folded int the packaging box 3 integrally having each of the first partition plate 1 and the second partition plate 2. In still other words, the first partition plate 1 and the second partition plate 2 are not separate from the packaging box 3. Note that the first partition plate 1 and the second partition plate 2 each have, as seen individually, a shape of a plate extending in a direction.

The first partition plate 1 and the second partition plate 2 are fitted together to thereby configure a partition plate P as shown in FIG. 3. In other words, different parts of the single cardboard sheet 100S are fitted together to thereby configure the partition plate P.

The first partition plate 1, as seen from a plate-thickness direction thereof, has a structure shown in FIG. 4. The first partition plate 1 has a first slit 11 cut therein from an upper end thereof (i.e., an end thereof on one side in the up-down direction). The first slit 11 penetrates the first partition plate 1 in the plate-thickness direction of the first partition plate 1. The first slit 11 extends downward from the upper end of the first partition plate 1. However, the first slit 11 does not reach a lower end of the first partition plate 1. Hereinafter, in the first partition plate 1, part thereof under the first slit 11 (part left without being cut) will be referred to as an under-slit part 12. In FIG. 4, the under-slit part 12 is surrounded by a broken line.

The second partition plate 2, as seen from a plate-thickness direction thereof, has a structure shown in FIG. 5. The second partition plate 2 has a second slit 21 cut therein from a lower end thereof (i.e., an end thereof on the other side in the up-down direction). The second slit 21 penetrates the second partition plate 2 in the plate-thickness direction of the second partition plate 2. The second slit 21 extends upward from the lower end of the second partition plate 2. However, the second slit 21 does not reach an upper end of the second partition plate 2.

Hereinafter, in the second partition plate 2, part thereof over the second slit 21 (part left without being cut) will be referred to as an over-slit part 22. In FIG. 5, the over-slit part 22 is surrounded by a broken line.

The first partition plate 1 and the second partition plate 2 are disposed to intersect with each other as seen from the up-down direction (see FIG. 2). For example, the first partition plate 1 and the second partition plate 2 are orthogonal to each other as seen from the up-down direction. In other words, the plate-thickness directions of the first partition plate 1 and the second partition plate 2 are orthogonal to each other.

As will be later described in detail, when disposed in the containing area CA, the first partition plate 1 has its plate-thickness direction parallel to the left-right direction (the direction X), while the second partition plate 2 has its plate-thickness direction parallel to the front-back direction (the direction Y). In other words, when disposed in the containing area CA, as seen from the up-down direction, the first partition plate 1 extends straight in the front-back direction (the direction Y), and the second partition plate 2 extends straight in the left-right direction (the direction X).

For intersection of the first partition plate 1 with the second partition plate 2, the first partition plate 1 has the first slit 11 formed therein. And, the second partition plate 2 is inserted in the first slit 11 to thereby couple the first partition plate 1 and the second partition plate 2 to each other in an (orthogonally) intersecting manner.

Specifically, the over-slit part 22 of the second partition plate 2 is inserted into the first slit 11. Further, the under-slit part 12 of the first partition plate 1 is inserted into the second slit 21. The second slit 21 is formed in such part of the second partition plate 2 as is to be inserted into the first slit 11. In other words, the second slit 21 is formed in the second partition plate 2 in part thereof at which the second partition plate 2 intersects the first partition plate 1. The first partition plate 1 holds the second partition plate 2 (the over-slit part 22) between a one-side cut surface 111 and an other-side cut surface 112 in the first slit 11 that face each other.

The second partition plate 2 holds the first partition plate 1 (the under-slit part 12) between a pair of inside surfaces (for which signs are omitted) in the second slit 21 that face each other.

Note that the first partition plate 1 and the second partition plate 2 each erect (stand) in the up-down direction. The first partition plate 1 is disposed such that a cutout opening of the first slit 11 (in other words, an opening allowing communication between inside and outside of the first slit 11) faces upward. The second partition plate 2 is disposed such that a cutout opening of the second slit 21 (in other words, an opening allowing communication between inside and outside of the second slit 21) faces downward. In this case, into the first slit 11 of the first partition plate 1, the second partition plate 2 is inserted from above (see FIG. 6). Thereby, the over-slit part 22 of the second partition plate 2 is disposed in the first slit 11 of the first partition plate 1, and the under-slit part 12 of the first partition plate 1 is disposed in the second slit 21 of the second partition plate 2.

By forming the first slit 11 in the first partition plate 1 and further forming the second slit 21 in the second partition plate 2, it is possible to align positions of lower ends of the first partition plate 1 and the second partition plate 2. Thereby, it is possible to suppress formation of a gap under the second partition plate 2 (between the lower end of the second partition plate 2 and a bottom surface of the containing area CA).

Further, by forming the first slit 11 in the first partition plate 1 and forming the second slit 21 in the second partition plate 2 as well, it is possible to align positions of upper ends of the first partition plate 1 and the second partition plate 2. Thereby, it is possible to suppress protrusion of the upper end of the second partition plate 2 beyond the upper end of the first partition plate 1.

Note that, as long as the first slit 11 is formed in the first partition plate 1, even without forming the second slit 21 in the second partition plate 2, it is possible to have the first partition plate 1 and the second partition plate 2 intersect with each other.

As a modified example, the first partition plate 1 may be disposed such that the cutout opening of the first slit 11 faces downward. In the configuration of this modified example, in a case where the second partition plate 2 has the second slit 21 formed therein, the second partition plate 2 is disposed such that the cutout opening of the second slit 21 faces upward. In other words, there is no particular limitation to positional relationship between the first partition plate 1 and the second partition plate 2 in the up-down direction.

Here, the first partition plate 1 has an engagement protrusion 110 on the one-side cut surface 111 of the first slit 11 (see FIG. 4). Specifically, in the one-side cut surface 111, as the engagement protrusion 110, a protrusion is formed to protrude toward the other-side cut surface 112. That is, the one-side cut surface 111 has the engagement protrusion 110 protruding toward the other-side cut surface 112.

Further, the second partition plate 2 has an engagement hole 210 in the over-slit part 22 (i.e., over the second slit 21) (see FIG. 5). Specifically, in the over-slit part 22, as the engagement hole 210, a through hole is formed to penetrate the second partition plate 2 in the plate-thickness direction thereof. In other words, the engagement hole 210 is formed in such part of the second partition plate 2 as is sandwiched between the one-side cut surface 111 and the other-side cut surface 112 of the first slit 11.

And, as shown in FIG. 7, with the over-slit part 22 of the second partition plate 2 inserted in the first slit 11, the engagement protrusion 110 is inserted into the engagement hole 210. In other words, with the over-slit part 22 of the second partition plate 2 inserted in the first slit 11, the engagement protrusion 110 and the engagement hole 210 engage with each other. Thereby, the first partition plate 1 and the second partition plate 2 are engaged (i.e., coupled) with each other. Note that FIG. 7 shows a sectional view of the over-slit part 22 of the second partition plate 2 cut along a YZ plane.

In the configuration where the engagement protrusion 110 and the engagement hole 210 engage with each other, the second partition plate 2 cannot move upward with respect to the first partition plate 1, because upward movement of the second partition plate 2 is restricted. In other words, the second partition plate 2 is unlikely to be uncoupled from the first partition plate 1. In still other words, the positional relationship between the first partition plate 1 and the second partition plate 2 in the up-down direction is unlikely to be distorted. Thereby, it is possible to suppress positional deviation of the first partition plate 1 and the second partition plate 2. As a result, it is possible to suppress movement of a packaged object contained in the containing area CA. If the movement of the packaged object in the containing area CA can be suppressed, it is possible to suppress damage to the packaged object.

Further, the first partition plate 1 has a recessed portion 120 formed in the other-side cut surface 112 of the first slit 11 (see FIG. 4). The recessed portion 120 is, as seen from the plate-thickness direction of the first partition plate 1, recessed from other parts of the other-side cut surface 112 in a protruding direction of the engagement protrusion 110. And, the engagement protrusion 110, as seen from the plate-thickness direction of the first partition plate 1, protrudes into the recessed portion 120. That is, as seen from the plate-thickness direction of the first partition plate 1, at least part of the engagement protrusion 110 is disposed in the recessed portion 120. In this case, as seen from the plate-thickness direction of the first partition plate 1, part of the first slit 11 is constituted of a gap between the engagement protrusion 110 and the recessed portion 120. Thus, the first slit 11 is not linear as seen from the plate-thickness direction of the first partition plate 1. On the other hand, the second slit 21 extends linearly as seen from the plate-thickness direction of the second partition plate 2.

In the configuration in which the engagement protrusion 110 of the first partition plate 1 protrudes into the recessed portion 120, with the second partition plate 2 inserted in the first slit 11 (a state shown in FIG. 7), the engagement protrusion 110 and the engagement hole 210 are in a strong engagement with each other, and thus it is possible to suppress disengagement of the engagement protrusion 110 from the engagement hole 210. Thereby, it is possible to securely maintain a state in which the engagement protrusion 110 is inserted in the engagement hole 210 (in other words, a state where the engagement protrusion 110 and the engagement hole 210 are engaged with each other). By maintaining the engagement protrusion 110 in the state of being inserted in the engagement hole 210, it is possible to suppress positional deviation of the first partition plate 1 and the second partition plate 2.

The packaging box 3 integrally has the first partition plate 1 and the second partition plate 2. In other words, the first partition plate 1 and the second partition plate 2 are each part of the cardboard sheet 100S (see FIG. 8). In still other words, in a process of folding the cardboard sheet 100S, the first partition plate 1 and the second partition plate 2 are disposed in the containing area CA in a state of intersecting with each other.

The packaging box 3 includes a bottom portion 30. The packaging box 3 further includes a pair of first wall portions 31 opposed to each other in the left-right direction and a pair of second wall portions 32 opposed to each other in the front-back direction.

The bottom portion 30 has a rectangular shape as seen from the up-down direction. The bottom portion 30 may be oblong, or may be square, as seen from the up-down direction. The bottom portion 30 has, as seen from the up-down direction, a pair of edges that extend in the left-right direction and a pair of edges that extend in the front-back direction.

The pair of first wall portions 31 are respectively parts folded upward from the pair of edges of the bottom portion 30 extending in the front-back direction. In other words, the pair of first wall portions 31 are parts that are respectively connected to the pair of edges of the bottom portion 30 extending in the front-back direction, and that respectively extend upward from the pair of edges of the bottom portion 30 extending in the front-back direction.

The pair of second wall portions 32 are parts that are respectively folded upward from the pair of edges of the bottom portion 30 extending in the left-right direction. In other words, the pair of second wall portions 32 are parts that are respectively connected to the pair of edges of the bottom portion 30 extending in the left-right direction, and that respectively extend upward from the pair of edges of the bottom portion 30 extending in the left-right direction.

An area over the bottom portion 30 is surrounded by the pair of first wall portions 31 and the pair of second wall portions 32. The containing area CA is an area that is over the bottom portion 30 and that is surrounded by the pair of first wall portions 31 and the pair of second wall portions 32. An upper surface of the bottom portion 30 corresponds to a bottom surface of the containing area CA. A pair of mutually facing surfaces of the pair of first wall portions 31 respectively correspond to internal surfaces that define a range of the containing area CA in the left-right direction. A pair of mutually facing surfaces of the pair of second wall portions 32 respectively correspond to internal surfaces that define a range of the containing area CA in the front-back direction.

The packaging box 3 further includes a pair of lid portions 33. Parts extending from upper ends of the pair of second wall portions 32 respectively correspond to the lid portions 33. That is, the lid portions 33 are respectively connected to the upper ends of the pair of second wall portions 32. The pair of lid portions 33 are respectively folded from the upper ends of the second wall portions 32, to which they are connected, to thereby close the containing area CA from above.

For example, the lid portions 33 have operation portions 330. The operation portions 330 are cutouts formed in the lid portions 33. To open and close the lid portions 33, an operator puts one of his/her fingers in each of the operation portions 330.

Note that the packaging member 100 includes coupling portions 4. The coupling portions 4 are folded in the left-right direction from side edges of the first wall portions 31 in the front-back direction, and are extended along the internal surfaces of the second wall portions 32. The coupling portions 4 are respectively connected to one and the other of the side edges of the first wall portions in the front-back direction. Furthermore, the coupling portions 4 are respectively connected to the pair of first wall portions 31.

Here, the first partition plate 1 is a part that is folded in the front-back direction from one side edge of one of the coupling portions 4 opposite the other side edge thereof connected to one of the first wall portions 31 so as to be disposed in the containing area CA (see FIG. 2). The second partition plate 2 is a part that is folded downward from one edge of one of the lid portions 33 opposite another edge thereof connected to one of the second wall portions 32 so as to be disposed in the containing area CA (see FIG. 6). In other words, the first partition plate 1 is a part that continuously extends from one of the first wall portions 31 via one of the coupling portions 4, and the second partition plate 2 is a part that continuously extends from one of the second wall portions 32 via one of the lid portions 33. In still other words, the first partition plate 1 and the second partition plate 2 are integrally provided in the packaging box 3.

In the configuration where the first partition plate 1 and the second partition plate 2 are integrally provided in the packaging box 3, it is possible to reduce the number of components of the packaging member 100. In other words, merely by preparing one sheet of the cardboard sheet 100S as shown in FIG. 8, it is possible to obtain the packaging box 3 having the first partition plate 1 and the second partition plate 2.

As a modified example, a part that is folded in the front-back direction from one side edge of one of the coupling portions 4 opposite the other side edge thereof connected to one of the first wall portions 31 so as to be disposed in the containing area CA may be a second partition plate 2, and a part that is folded downward from one edge of one of the lid portions 33 opposite another edge thereof connected to one of the second wall portions 32 so as to be disposed in the containing area CA may be a first partition plate 1.

Further, a first partition plate 1 connected via one of the coupling portions 4 to one side edge of one of the first walls 31 in the front-back direction and a first partition plate 1 connected via one of the coupling portions 4 to the other side edge of one of the first walls 31 that is opposite the one side edge in the front-back direction are folded in opposite directions. That is, as seen from the up-down direction, there exist a first partition plate 1 that extends from the one side to the other side in the front-back direction and a first partition plate 1 that extends from the other side to the one side in the front-back direction.

And, in this configuration, such one of the coupling portions 4 as is connected to one side edge of one of the first wall portions 31 in the front-back direction and such one of the coupling portions 4 as is connected to the other side edge of the one of the first wall portions 31 in the front-back direction are different from each other in length in the left-right direction. That is, there exist first coupling portions 41 that are short in the left-right direction and second coupling portions 42 that are longer in the left-right direction than the first coupling portions 41 (see FIG. 2). Thereby, a state is reached in which, as seen from the up-down direction, four first partition plates 1 extending in the front-back direction are disposed at intervals in the left-right direction (the plate-thickness direction of the first partition plates 1). In this case, the containing area CA is divided into five in the left-right direction.

That is, the packaging member 100 includes a plurality of first partition plates 1. The plurality of first partition plates 1 are coupled to side edges of the pair of first wall portions 31 via the coupling portions 4. Specifically, the plurality of first partition plates 1 include those each coupled to one side edge of one of the first wall portions 31 via one of the coupling portions 4 and those each coupled to the other side edge of one of the first wall portions 31 via another one of the coupling portions 4.

And, the plurality of first partition plates 1 are folded along predetermined fold lines. In other words, each of the plurality of first partition plates 1 is folded at a border line (the border line being a predetermined fold line) with respect to a corresponding one of the coupling portions 4 to which it is coupled. As a result, the plurality of first partition plates 1 are arrayed on the bottom portion 30 at intervals from one another in the left-right direction.

The packaging member 100 includes a pair of second partition plates 2 coupled to the pair of lid portions 33. The pair of second partition plates 2 include a plurality of second slits 21. The plurality of second slits 21 correspond to the first slits 11 of the plurality of first partition plates 1. The pair of second partition plates 2 are folded downward from edges of the pair of lid portions 33, and the plurality of second slits 21 are inserted into the first slits 11 of the plurality of first partition plates 1, whereby the pair of second partition plates 2 are coupled to the plurality of first partition plates 1.

Specifically, a part that is folded downward from an edge of one of the lid portions 33 opposite an edge connected to one of the second wall portions 32 so as to be disposed in the containing area CA and a part that is folded downward from an edge of the other of the lid portions 33 opposite to an edge connected to the other of the second wall portions 32 so as to be disposed in the containing area CA form the second partition plates 2, which overlap each other in the front-back direction to form a duplicate portion (see FIGS. 2 and 6). That is, the two second partition plates 2 are overlapped with each other in the front-back direction (the plate-thickness direction of the second partition plates 2). And, with the pair of second partition plates 2 overlapping each other in the front-back direction, the plurality of second slits 21 are inserted into the first slits 11 of the plurality of first partition plates 1. Thereby, a state is reached in which the duplicate portion stands in the containing area CA, and this helps enhance compressive strength of the packaging member 100 in the up-down direction.

Note that, in this configuration, the four first partition plates 1 divide the containing area CA into five in the left-right direction. And, by using the two second partition plates 2 as one partition plate formed by overlapping them in the front-back direction (the plate-thickness direction of the second partition plates 2), the containing area CA is divided into two in the front-back direction. That is, the first partition plates 1 and the second partition plates 2 divide the containing area CA into ten areas.

A development view of the packaging member 100 is shown in FIG. 8. An intermediate state during assembly is shown in FIG. 9. In FIGS. 8 and 9, the upper surface of the bottom portion 30 (the upper surface being a placement surface on which to place a packaged object and also being the bottom surface of the containing area CA) is illustrated as facing upward. Further, in FIGS. 8 and 9, a thick solid line is a cutting line, and a broken line is a valley folding line.

A procedure of assembling the packaging member 100 starts with folding the first wall portions 31 and parts continuously extending from the first wall portions 31. Note that the parts include the coupling portions 4 and the first partition plates 1. Thereby, the state shown in FIG. 9 is reached from the state shown in FIG. 8. That is, the state is reached in which the first partition plates 1 are erected.

Next, the second wall portions 32 and parts continuously extending from the second wall portions 32 are folded. Note that the parts include the lid portions 33 and the second partition plates 2. When folding the second partition plates 2 with respect to the lid portions 33, as shown in FIG. 6, the second partition plates 2 are inserted into the first slits 11 of the first partition plates 1, and the first partition plates 1 are inserted into the second slits 21 of the second partition plates 2. Thereby, the packaging member 100 shown in FIG. 1 is obtained.

By inserting the second partition plates 2 into the first slits 11 of the first partition plates 1, the engagement protrusion 110 is inserted into the engagement hole 210. In other words, the engagement protrusion 110 and the engagement hole 210 engage with each other. Note that the lid portions 33 are continuous with the second partition plates 2. Thus, by the engagement protrusion 110 and the engagement hole 210 engaging with each other, the lid portions 33 are brought into the locked state (the lid portions 33 become unlikely to be opened). Thereby, accidental opening of the lid portions 33 can be suppressed. To open the lid portions 33, it is necessary to release the engagement between the engagement protrusion 110 and the engagement hole 210 by intention.

Here, the two second partition plates 2 overlap each other in the front-back direction (the plate-thickness direction of the second partition plates 2). In other words, the two second partition plates 2 face each other with an extremely short interval therebetween in the front-back direction. The interval between the two second partition plates 2 in the front-back direction is smaller than a width of the second partition plates 2 in the up-down direction. Note that the two second partition plates 2 may be in contact with each other in the front-back direction. With this configuration, when one of the pair of lid portions 33 is not opened, it is difficult to open the other of the lid portions 33.

To deal with this inconvenience, one of the two second partition plates 2 has the engagement hole 210 formed therein, while the other second partition plate 2 has no engagement hole 210 formed therein. In other words, one of the second partition plates 2 engages with the first partition plates 1 while the other of the second partition plates 2 does not engage with the first partition plates 1. With this configuration, one of the lid portions 33 can be locked, but the other of the lid portions 33 cannot be locked. However, with one of the lid portions 33 locked, the other of the lid portions 33 does not open. That is, with one of the lid portions 33 locked, the other of the lid portions 33 is also substantially locked. Thus, with the configuration where only one of the two second partition plates 2 has an engagement hole 210 formed therein, it is possible to lock both of the pair of lid portions 33.

It should be understood that the embodiment disclosed herein is an example in all aspects and does not limit the implementation of the present invention in any way. The range of the present disclosure is shown not by the above descriptions of the embodiment but the scope of claims for patent, and it is intended that all modifications within the meaning and range equivalent to the scope of claims for patent are included.

For example, the above embodiment has dealt with a case where the first partition plates 1 and the second partition plates 2 are integral with the packaging box 3, but this is not meant to limit the present disclosure, and the first partition plates 1 and the second partition plates 2 may be separate from the packaging box 3. That is, as shown in FIG. 10, after assembling the packaging box 3 first, the first partition plates 1 and the second partition plates 2 may be put in the containing area CA of the packaging box 3. Note that FIG. 10 includes an upper diagram showing a state in which partition plates P (the first partition plates 1 and the second partition plates 2) are not disposed in the containing area CA of the packaging box 3, and a lower diagram showing a state in which the partition plates P are disposed in the containing area CA of the packaging box 3.

Further, there is no particular limitation to the number of the first and second partition plates 1 and 2 constituting the partition plates P. For example, as shown in FIG. 10, two first partition plates 1 and one second partition plate 2 may be used. In that case, the containing area CA can be divided into six areas.

PACKAGING MEMBER

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