JP6691413B2 - Collective packaging container and laminated body thereof - Google Patents

Description

  The present invention relates to a collective packaging container and a laminate thereof, which is suitable for transporting mainly soft-fruited fruits such as strawberries, grapes, cherries, loquats, and figs.

Conventionally, soft-fruited fruits such as strawberries, grapes, cherries, loquats, and figs are sold in a tray (thin-wall resin molding container) in an appropriate amount according to the sales unit at a retail store.
It is desirable from the standpoint of transportation cost that the tray packed with strawberries should be packed in multiple units rather than one by one, and shipped as much as possible, considering the handling and transportation costs. . Therefore, the above trays are grouped together and stored in a collective packaging container such as a larger-capacity cardboard box or resin container, and shipped for storage, storage, and transportation in cardboard box units or container units. Has been made possible.

Here, for example, in the case of a packed tray containing strawberries, two or four pieces are stored in a stackable corrugated cardboard box, and the corrugated cardboard boxes are stacked in two or three steps, and then banded or the like to put it on the market. It is shipped to mass retailers and the like (see, for example, Patent Documents 1 and 2).
Further, there is also proposed a collective packaging container in which a partitioning material is attached inside the box and which is suitable for accommodating a plurality of the above-mentioned packing trays (see Patent Document 3).
Further, a collective packaging container made of expanded resin molded particles of thermoplastic resin in which notches are formed in the side wall, a through hole is provided in the bottom plate, and the tray is supported in a suspended state by the partition part and the projecting part formed on the inner surface of the side wall. Has also been proposed (see Patent Document 4).

Japanese Utility Model Publication No. 58-46739 Japanese Utility Model Laid-Open No. 58-52122 JP, 2002-128055, A JP, 2015-40050, A

However, first, in the case of a corrugated cardboard container as described in Patent Documents 1 to 3, the durability may be deteriorated due to dew condensation or the like during cooling in a refrigerator or the like, and breakage or deformation may occur during transportation. Further, in the case of a resin container, since it is heavy and hard, the workability is poor and the manufacturing cost is high.
Further, in the collective packaging container composed of the expanded particle molded article of the thermoplastic resin described in Patent Document 4, since trays packed with strawberries and the like can be stored and held in a suspended state, they are excellent in cushioning properties and the like. However, when the tray is not stored yet and it is not used, a large space is required for transportation and storage of the tray, which leaves room for improvement.
On the other hand, in order to facilitate the transportation and transportation of the collective packaging container that does not contain the tray, a fitting groove is provided on the side wall near the four corners of the collective packaging container, the opening direction of the collective packaging container is faced, and A method is known in which the stacking containers are stacked so that the side walls are fitted in the fitting groove and the stacking containers are slightly displaced from each other so as to reduce the stacking height. However, in this case, since the fitting groove is provided, the strength of the collective packaging container, particularly the strength of the four corners, is reduced, and the stacking strength when the collective packaging containers are stacked in multiple stages may be insufficient.

  The present invention has been made in view of the actual situation of the background art described above, and its purpose is to prevent vibration and impact from being directly transmitted to a packed tray of stored strawberries, etc. An object of the present invention is to propose a collective packaging container capable of increasing the load capacity when used and further reducing the transportation and storage space when not in use.

In order to achieve the above-mentioned object, the present invention provides a collective packaging container and a laminate thereof as described in [1] to [14] below.
[1] A collective packaging container having a substantially rectangular parallelepiped box body having an upper surface opened and containing a plurality of trays packed with fruits, wherein the box body is formed of a foamed molded body, and A side wall that rises from the peripheral portion of the bottom wall is formed, and the inside of the box is divided by a protrusion that supports the flange of the tray, and at least one corner of the four corners of the box is formed. The side wall portion on the short side near the side portion and the side wall portion on the long side near the corner portion at the diagonal position thereof face the opening directions of the two collective packaging containers, and when they are shifted and overlapped. Is provided with a fitting groove into which the respective side walls are fitted , and an L-shaped step in a top view rising from the bottom wall is provided on all inner surfaces of the four corners of the box body. The groove is located at a distance (δ) from the apex of the corner. Is formed, and the distance (δ) is 1.1 to 3 times the side wall thickness (T) (however, the distance (δ) is from the apex of the corner to the apex side of the upper opening of the fitting groove). Is the distance to the open end of the.) .
[2] The side wall on the short side near the other corner of the side wall on the short side provided with the fitting groove and the side wall on the long side near the corner at the diagonal position, The collective packaging container according to the above [1], wherein a fitting groove is provided.
[3] The side wall on the long side near the other corner of the side wall on the long side provided with the fitting groove and the side wall on the short side near the corner at the diagonal position, The collective packaging container according to the above [1], wherein a fitting groove is provided.
[4] The width (u) of the fitting groove is 1.1 to 2 times as wide as the thickness (T) of the side wall, according to any one of the above [1] to [3]. Collective packaging container.
[5] A plurality of cutout recesses are formed in the side wall on the long side of the box body, and the cutout recesses make the top end of the side wall on the long side side uneven, and the long side of the box body The bottom surface of the bottom wall of the side wall is formed with an engaging recess that engages with the convex-concave shape, and the collective packaging container according to any one of [1] to [4] above. .
[6] Engagement projections are formed on the upper surface of the side wall of the four corners of the box, and engagement recesses that engage with the engagement projections are formed on the bottom of the bottom wall of the four corners of the box. The collective packaging container according to any one of [1] to [5] above, which is characterized in that
[7] Any of [1] to [6] above, wherein the long side length (L) of the box body is 570 to 615 mm and the short side length (W) is 330 to 400 mm. The collective packaging container described in Crab.
[8] The side wall height (H) of the box body is 70 to 100 mm, and the ratio (h / H) of the step height (h) to the side wall height (H) is 0.4 to 0. 0.8, the collective packaging container according to any one of the above [1] to [7].
[9] The collective packaging container according to any one of the above [1] to [8], wherein a through hole is formed in the bottom wall of the portion divided by the protrusion.
[10] The steps [1] to [9] are characterized in that a step portion rising from the bottom wall is formed on the inner surface of each short side wall over the entire width of the short side wall. ] The collective packaging container according to any one of the above.
[11] A cutout recess serving as a handle is formed near the center of the outer side of the short side wall of the box body, and the upper surface of the stepped portion is located at a position higher than the upper end of the cutout recess. The packaging container according to [10] above, which is characterized in that
[12] The protrusion comprises a sidewall protrusion protruding inward from the inner surface of at least the long side wall of the box, and the notch recess is formed in the sidewall between adjacent sidewall protrusions. The collective packaging container according to [ 5 ] above.
[13] The collective packaging container according to the above [12], wherein the opening width at the upper end of the side wall of the cutout recess is 30 to 120 mm.
[14] A collective packaging container laminate, which is obtained by stacking a plurality of the collective packaging containers according to any one of [1] to [13] above and below in the vertical direction.

  According to the above-mentioned collective packaging container according to the present invention, it is difficult for vibration and impact to be directly transmitted to the packed tray of the stored strawberries and the like, and the loading amount during transportation can be increased, and further transportation and storage when not in use It becomes a collective packaging container that can reduce the space.

It is the figure which showed one Embodiment of the collective packaging container which concerns on this invention, (a) is a top view, (b) is a right view. It is a bottom view of the container shown in FIG. It is a figure of the container shown in Drawing 1, (a) is a rear view and (b) is a front view. FIG. 4 is a perspective view of the container shown in FIGS. 1 to 3 as viewed from above. FIG. 4 is a perspective view of the container shown in FIGS. 1 to 3 as viewed from below. It is the figure of the container shown in FIGS. 1-3, (a) is sectional drawing of the part which follows the AA line of FIG. 1 (a), (b) is the BB line of FIG. 1 (a). It is sectional drawing of the part which follows. It is the figure of the container shown in FIGS. 1-3, (a) is sectional drawing of the part which follows CC line of (a), (b) DD line of (a) of FIG. It is sectional drawing of the part which follows. FIG. 4 is a perspective view showing a state in which two containers shown in FIGS. 1 to 3 are combined. It is the figure which showed the state which combined two containers shown in FIGS. 1-3, (a) is a front view, (b) is a right view. It is the figure which showed the state which packed the strawberry packing tray in the container shown in FIGS. 1-3, (a) is a top view, (b) is along the EE line of FIG. 10 (a). It is a sectional view of a part. FIG. 4 is a side view showing a state in which the containers shown in FIGS. 1 to 3 are stacked in multiple stages. FIG. 3 is a conceptual perspective view showing an example of a state in which a collective packaging container is stacked on a pallet in multiple stages.

  Hereinafter, embodiments of the collective packaging container according to the present invention described above will be described in detail with reference to the drawings. In the illustrated embodiment of the collective packaging container according to the present invention, the right side view and the left side view are the same, so the left side view is omitted.

The illustrated collective packaging container 1 according to the present invention is a collective packaging container having a substantially rectangular parallelepiped box body having an opened upper surface and storing a plurality of trays packed with fruits, wherein the box body is a foamed molded body. And a side wall 3 rising from the peripheral edge of the bottom wall 2 is formed in the box body, and the inside of the box body is divided into ten storage portions by a protrusion 4 supporting the flange portion of the tray. Has been done. The long side length (L) of the box is preferably 570 to 615 mm, and the short side length (W) is preferably 330 to 400 mm. When the length (L) of the long side exceeds 615 mm, the loading amount at the time of transportation when palletizing is reduced, and the transportation cost increases. From the above viewpoint, the length (L) of the long side is more preferably 580 to 610 mm, further preferably 590 to 605 mm, and most preferably 595 to 603 mm. On the other hand, the length (W) of the short side is more preferably 340 to 390 mm, further preferably 350 to 380 mm.
As for the length (W) of the short side and the length (L) of the long side, the outer dimensions of the collective packaging container are measured as shown in FIG.

  A fitting groove 5 is provided in a side wall portion on the short side near the corner portion of at least one of the four corners of the box body and a side wall portion on the long side near the corner portion at the diagonal position. Has been. More specifically, the side wall on the short side at a position (δ) beyond the thickness (T) of the side wall from the apex of at least one of the four corners of the box has a long side. The fitting groove 5a having a width (u) that exceeds the thickness (T) of the side wall is provided, and the distance (δ) that exceeds the thickness (T) of the side wall is separated from the apexes of the four corners at the diagonal positions. A fitting groove 5a having a width (u) exceeding the thickness (T) of the side wall on the short side is provided on the side wall portion on the long side of the position.

  In the collective packaging container 1 according to the illustrated embodiment, in addition to the two fitting grooves 5a, the side wall from the apex of the other four corners of the short side wall provided with the fitting groove 5a A fitting groove 5b having a width (u) exceeding the thickness (T) of the side wall on the long side is provided at the side wall portion on the short side at a position (δ) away from the thickness (T), and The width (u) exceeding the thickness (T) of the short side wall in the side wall portion on the long side at a distance (δ) exceeding the thickness (T) of the side wall from the apexes of the four corners at diagonal positions. Fitting groove 5b is provided.

The fitting groove 5a faces the opening direction of the two boxes, and when the boxes are overlapped with each other with a slight shift, the fitting groove 5a of the side wall on the short side of one box and the other The long side wall of the box body, the fitting groove 5a of the long side wall of one box body, and the short side wall of the other box body fit together. As a result, the stacking height of the two boxes can be reduced, and the transportation and storage space of the boxes when not in use can be reduced.
Further, when the fitting grooves 5a and 5b are provided, as shown in FIGS. 8 and 9, when the opening directions of the two box bodies are opposed to each other and the box bodies are slightly shifted from each other, they are overlapped with each other. A fitting groove 5a on the short side wall of one box body, a fitting groove 5b on the long side wall of the other box body, a fitting groove 5a on the long side wall of one box body and the other The fitting groove 5b on the short side wall of the box body is fitted. In this case, since the stacking height of the two boxes can be reduced without forming the fitting groove 5a deep, it is possible to prevent the strength of the side wall from being significantly reduced. At this time, from the viewpoint of further reducing the stacking height of the two boxes, the length near the four corners of the side wall on the short side where the fitting grooves 5a and 5b are formed is avoided so as to avoid the protrusion 4 described later. It is preferable to appropriately provide a notch recess 6 described later on the side wall on the side.
When a step portion 8 described later is provided at a position corresponding to the side wall position of the other box body into which the fitting groove 5 of one box body is fitted, the thickness of the side wall including the thickness of the step portion 8 is The fitting groove 5 is provided with a width (u) that exceeds the width.

  In addition to the above-mentioned fitting groove 5b, in addition to the above-mentioned two fitting grooves 5a, a long side near the other four corners of the side wall on the long side where the fitting groove 5a is provided is provided. A configuration in which a fitting groove 5c is also provided on the side wall portion and the side wall portion on the short side near the four corners at diagonal positions thereof, more specifically, the long side on which the fitting groove 5a is provided. The width (u) exceeding the thickness (T) of the side wall on the short side is set to the side wall portion on the long side at a position (distance) exceeding the thickness (T) of the side wall from the apex of the other four corners of the side wall on the side. ) Is provided with the fitting groove 5c (not shown), and the short side on the side of the distance (δ) that exceeds the thickness (T) of the side wall from the apexes of the four corners at the diagonal positions. Even when the side wall is provided with the fitting groove 5c (not shown) having a width (u) exceeding the thickness (T) of the side wall on the long side, two box bodies are also fitted into the fitting groove 5a. ， This is also acceptable because the stacking height can be reduced by overlapping the 5c so that they fit into each other.

If the fitting groove 5 is formed at a position away from the apexes of the four corners by a distance (δ) exceeding the thickness (T) of the side wall, the side wall can be fitted without being disturbed. However, if this distance (δ) is too long, the two boxes that have been fitted together will be greatly displaced, and the effect of reducing the occupied volume will be diminished, so it is preferable that they be formed near the four corners. From this point of view, the distance (δ) from the apex of the four corners is preferably 1.1 to 3 times the side wall thickness (T), and 1.2 to 2.5 times. Is more preferable.
The fitting groove 5 may have a width (u) that exceeds the thickness (T) of the side wall, but from the viewpoint of strength of the side wall, ease of fitting, and prevention of deviation after fitting, etc. The width is preferably 1.1 to 2 times the thickness (T), and more preferably 1.2 to 1.8 times the width.
The depth (v) of the fitting groove may be 0.3 to 0.7 times the height (H) of the side wall in consideration of the effect of reducing the height by fitting and the strength of the side wall. It is more preferable that the depth is 0.4 to 0.6 times. In particular, when the fitting grooves 5a and 5b are provided in the box body, by setting the depth (v) of the fitting groove within the above range, it is possible to prevent the strength of the side wall from being significantly reduced and to reduce the number of the two pieces. By stacking the box bodies so that the fitting grooves 5a and 5b fit in each other, the stacking height can be further reduced.
The fitting groove 5 may be a fitting groove having a wider width toward the upper side in consideration of the ease of fitting the side wall. Further, the distance (δ) from the apex of the above four corners, the width (u), and the depth (v) of the fitting groove 5 are as shown in FIG. 1 (b) and FIG. 3 (a).

  Further, a plurality of cutout recesses 6 are formed on the side wall 3 of the box body. In the illustrated embodiment, four notched recesses 6 are formed in the long side wall 3a, and the upper end of the long side wall 3a has an uneven shape. Each side wall 3b on the short side is formed with one notch recess 6. The notch concave portion 6 acts as a ventilation portion and can enhance the cooling efficiency when the collective packaging containers are stacked and stored in the refrigerator. The fitting groove 5 formed on the side wall 3 also functions as a ventilation part. The opening ratio of all the notched recesses 6 and all fitting grooves 5 to all the side walls 3 is preferably 10 to 60%, and preferably 10 to 50%, in view of the balance between the cooling efficiency and the strength of the side walls. It is more preferable, and it is particularly preferable that the content is 15 to 30%. Further, from the viewpoint of reducing the stacking height when the opening directions of the two box bodies are opposed to each other by using the fitting groove 5 and the stacking height is reduced, the notch concave portion 6 is configured so as to avoid the protruding portion 4 described later. It is preferably formed. In addition, a cutout recess 7 serving as a handle is formed near the center of the outer surface of the side wall 3a on the short side.

Further, in the collective packaging container 1 according to the present invention, at least the stepped portion rising from the bottom wall 2 of the box body on the inner surface side of the short side wall near the four corners of the box body in which the fitting grooves 5 are formed. 8 are provided. By forming the step portion 8, it is possible to increase the strength of the four corners of the box body in which loads such as bending stress and compressive stress tend to concentrate when the box bodies are stacked in multiple stages. In particular, even when the fitting groove 5 is formed on the side wall of the box body, the stacking strength when the containers are stacked can be secured, and the side wall can be prevented from being deformed.
From the above viewpoint, it is preferable that the step portion 8 is provided on the inner surfaces of all the four corner portions of the side wall of the box, and the inner surfaces of all the four corner portions of the short side wall and the long side wall of the box body. Is more preferable, and it is more preferable that the inner wall of all four corners of the side wall of the box is L-shaped in a top view.
Further, the stepped portion 8 is formed so as to support the flange portion F of the strawberry packing tray T stored as shown in FIG. 10, and the tray T is suspended in the air (the bottom surface of the tray is the bottom wall). It is preferably stored and held in the container 1 in a state where they do not come into contact with each other. Therefore, the step portion 8 is formed so as to have two roles of reinforcing the side wall and holding the strawberry packing tray.

Note that, as shown in FIG. 12, in order to stack and stack the five collective packaging containers 1 in each stage on a commonly-used pallet of 1200 × 1000 mm standard, the length (L) of the long side is set to about 600 mm. There is a need. Further, since there is a standard in the size of the tray T packed with fruits, it is possible to store 10 trays T in the collective packaging container 1 and to set the length of the long side (L) to about 600 mm, It is necessary to thinly form the side wall 3 of the collective packaging container 1, in particular, the side wall 3b on the short side, the protruding portion 4 that functions as a partitioning portion that partitions the box body, and that supports the flange portion F of the tray T. On the other hand, if the side wall 3 of the collective packaging container 1 is formed thin, the stacking strength may be insufficient and the collective packaging container itself may be crushed and the fruits in the tray may be damaged. Will have to be reduced.
In the present invention, in particular, by making the structure of the four corners of the collective packaging container 1 into the specific shape as described above, even when the fitting groove 5 is formed on the side wall of the container, the stacking strength of the containers is increased. It is possible to efficiently accumulate the containers while maintaining the above, and to increase the loading amount during transportation.

  From the viewpoint of further increasing the strength of the box body, it is preferable that the step portion 8b of the short side wall is formed over the entire width of each of the short side walls 3b. Further, it is still preferable from the viewpoint of strength that the step portion 8a on the long side wall is formed so as to be connected to the step portion 8b on the short side at the four corner portions. Further, it is preferable that the step portions 8c are also formed along the inner surface side portion of the side wall 3a on the long side of the central portion in the longitudinal direction of the box body. The central portion in the longitudinal direction of the box body is the portion where the bending is most concerned, but the side wall portion on the long side of this portion is reinforced by the step portion 8c, so that the bending deformation of this portion is effectively suppressed. be able to.

The inside of the box is divided into a plurality of storage chambers by the projecting portion 4 as described above, and is preferably divided into 10 storage chambers. The protrusions 4 are intermittently formed inside the box body in consideration of cooling efficiency, and include eight T-shaped protrusions 4a in a top view formed on the inner surface side of the long side wall 3a. , Four cross-shaped projections 4b formed in the longitudinal direction at the center in the lateral direction, the projections 4b having a cross shape in a top view. As shown in FIG. The corner portion of the flange portion F of T is supported to be stored and held in the container 1. At this time, it is preferable that the tray T is stored and held in the container 1 in a suspended state (a state where the bottom surface of the tray does not contact the bottom wall). Protrusions 9 for preventing the displacement of the tray T are formed at the upper ends of the protrusions 4, respectively.
From the viewpoint of more effectively suppressing the deformation of the box body, the projecting portion 4 projects inward from the inner surface of the side wall of at least the long side of the box body and has a T-shaped top view. It is preferable that the side wall protrusions 4a (hereinafter also referred to as side wall protrusions) 4a are formed, and it is more preferable that the side wall protrusions 4a are arranged at equal intervals in the longitudinal direction of the box body.

  When the tray T is supported by the step portion 8 and the protruding portion 4 described above, it is preferable to support the tray T at the four corners of the flange portion F of the tray. This is because if it is supported near the center of the tray flange, it will be supported by the flange of the tray via the film that protects the fruit, and tension will be generated in the film, which may rub the film and the fruit and damage the stored fruit. Because there is. In order to prevent this, a concave groove 10 is formed at a suitable position on the upper end surface of the stepped portion 8, particularly at a position where the central portion of the flange portion F of the tray T contacts, and the stepped portion is formed near the center of the tray flange portion. It is preferable not to contact them. The depth of the groove 10 is preferably 3 to 8 mm.

  Further, two arc-shaped recesses 11 into which a finger can be inserted are formed on the inner surface of the side wall 3a on the long side where the cutout recesses 6 are formed. The tray T can be easily taken out from the container 1 by inserting a finger and picking up the flange portion F of the tray T stored and held in a suspended state.

  The side wall height (H) of the box body is preferably 70 to 100 mm, more preferably 75 to 90 mm. Within the above range, while maintaining the stacking strength of the collective packaging container, the stored tray T does not come into contact with the bottom wall, or the stored fruit does not come into contact with the bottom surface of the upper container when the containers are stacked, It is easy to handle.

Further, the ratio (h / H) of the height (h) of the step portion to the side wall height (H) is preferably 0.4 to 0.8, and 0.4 to 0.7. It is more preferable, and it is further preferable that it is 0.4 to 0.60. When the ratio (h / H) is within the above range, the strength of the side wall is further improved while holding the tray, and the stackability is excellent.
In addition, as described above, the cutout recesses 7 serving as handles are formed in the vicinity of the center of the outer surface side of the side wall 3b on the short side, but when the cutout recesses 7 are formed, the short side is formed. Side wall becomes thin, and there is a risk that the strength will decrease. Even in such a case, when the step portion 8b on the short side is formed over the entire width of the short side, the reduction in the side wall thickness of the cutout portion is compensated by the step portion 8b to reduce the strength. Can be prevented. From such a point of view, it is preferable that the upper surface of the stepped portion 8b is formed to a position higher than the upper end of the cutout concave portion 7. Therefore, the ratio (i / h) of the height (i) of the notched concave portion to the height (h) of the stepped portion is preferably 0.5 to 0.9, and 0.7 to 0. More preferably, it is 8. By having the above relationship, it is possible to improve the side wall strength on the short side by compensating for the decrease in the side wall thickness due to the notch for forming the handle portion on the side wall by forming the step portion.
The above-mentioned side wall height (H), step height (h), and notch recess height (i) are as shown in FIG. 6 (b) and FIG. 7 (a). The height from the upper surface of. In addition, when a groove is formed in the step portion, the height excluding this portion is the height (h) of the step portion.

Further, the thickness (d) of the stepped portions 8a, 8b and 8c formed so as to project to the inner surface side of the side wall is formed to be thicker than the side wall thickness (Tb) on the short side side and is 13 mm or more. It is preferably 14 to 34 mm, more preferably 15 to 32 mm. Within the above range, it is possible to increase the strength of the side wall while holding the flange portion of the tray. Further, in the side wall where the step is formed, the ratio (T / d) of the side wall thickness (T) of the portion where the step is not formed to the thickness (d) of the step is 0.3 to 0. 9 is preferable, 0.4 to 0.8 is more preferable, and 0.5 to 0.7 is further preferable.
Note that the thickness (d) of the step is, as shown in FIGS. 6B and 7B, half of the height from the upper surface of the bottom wall to the upper surface of the step. Measure the thickness. However, the location where the notched concave portion 7 serving as a handle is not formed is measured.

The side wall thickness (T) of the box body may be the same on the long side and the short side, but the side wall thickness (Ta) on the long side is larger than the side wall thickness (Tb) on the short side. It is preferable to form it, whereby the length (L) of the long side of the box can be made as short as possible and the strength as the box can be improved. Specifically, the side wall thickness (Ta) on the long side is preferably 15 to 30 mm, more preferably 17 to 25 mm. The side wall thickness (Tb) on the short side is preferably 10 to 20 mm, more preferably 13 to 17 mm. Further, the difference (Ta-Tb) between the side wall thickness (Ta) on the long side and the side wall thickness (Tb) on the short side is preferably 2 mm or more.
The side wall thicknesses (Ta) and (Tb) are measured as the thickness of the portion where the step portion does not exist. Specifically, the thickness of the part of the side wall where the step is not provided is ½ height from the lower end of the part is measured. However, the location where the notch recess 6 is not formed is measured.

  A through hole 12 for ventilation is formed in the bottom wall 2 forming the box body. The through holes 12 are arranged on the bottom wall of the portion divided by the protruding portion 4, and one through hole 12 is formed in consideration of cooling efficiency, and a total of 10 holes are formed. The through hole 12 has a quadrangular shape, and preferably has a length of 110 to 140 mm and a width of 60 to 90 mm, more preferably a length of 110 to 120 mm and a width of 60 to 75 mm in consideration of the strength of the bottom wall and cooling efficiency. preferable. The thickness of the bottom wall 2 is preferably 5 to 20 mm from the viewpoint of the cushioning property, the balance with the strength as the bottom wall, and the raw material filling property at the time of molding. Further, by enlarging the through hole 12 formed in the bottom wall, it is possible to support a part of the bottom portion of the accommodated tray T while being inserted and accommodated in the through hole 12 without contacting the bottom wall 2. Therefore, the protrusion 4 and the step 8 supporting the tray T can be designed to be low, the strength of the container can be improved, and the space can be saved during storage and transportation.

As shown in FIG. 2, on the bottom surface of the bottom wall of the side wall on the long side of the box body, as shown in FIG. 2, the convex portion of the upper end of the side wall on the long side formed in the above-mentioned uneven shape (hereinafter, also referred to as side wall convex portion). Engaging recesses 13 are formed to engage with each other, and L-shaped engaging projections 14 in a top view are respectively formed on the side wall upper surface portions of the four corner portions of the box body. Engaging recesses 15 that are L-shaped in rear view and that engage with the engaging protrusions 14 are formed on the bottom surface of the bottom wall. Then, by engaging the protrusions and the engaging protrusions 14 of the upper side wall on the long side of the lower container 1 with the engaging recesses 13 and the engaging recesses 15 of the upper container 1, respectively, as shown in FIG. As shown, since the upper box body can be supported at a plurality of points, it is possible to disperse and receive loads that are particularly likely to be applied to the four corners of the box body. Thereby, even when the fitting groove 5 is provided in the box body, the deformation of the box body can be more effectively suppressed, and the containers 1 can be stacked in multiple stages stably. From the above viewpoint, it is preferable that the notch recess 6 is formed in the sidewall between the adjacent sidewall protrusions 4a. In this case, the opening width (s) of the cutout recess 6 at the upper end of the side wall on the long side is preferably 30 to 120 mm, more preferably 40 to 100 mm.
From the viewpoint of further preventing misalignment when the boxes are stacked, an engaging projection is provided on the upper surface of the side wall convex portion of the box body, and the engagement of the upper surface of the side wall convex portion on the bottom surface of the side wall portion of the box body. It is also possible to form an engagement recess that engages with the mating protrusion.

  The total length of the engaging lengths of the side wall convex portion of the lower container 1 and the engaging protrusions 14 at the four corner portions, the engaging concave portion 13 of the upper container 1 and the engaging concave portion 15 at the four corner portions is It is preferably 20 to 60%, more preferably 30 to 50%, of the outer peripheral length of the container. The height of the engaging portion is preferably 2 to 30 mm, more preferably 5 to 20 mm, and particularly preferably 8 to 15 mm. Within the above range, the engagement is sufficient, the upper and lower boxes are not displaced when the boxes are stacked, and the containers 1 can be stably stacked in multiple stages.

  There is no limitation on the thermoplastic resin constituting the collective packaging container according to the present invention having the above-mentioned configuration, for example, styrene resin such as rubber-modified polystyrene or polystyrene, olefin resin such as polyethylene resin or polypropylene resin, styrene. Examples thereof include a composite resin composed of a styrene resin and an olefin resin containing as a main component, and among these, a styrene resin is preferable because it easily foams highly and is rich in rigidity. Further, as the form of the foamed molded product, a foamed particle molded product obtained by filling foamed particles into a mold and heat-molding is preferable because it is possible to easily manufacture a container having the above-mentioned complicated shape or a large shape. . This expanded particle molded body is obtained by, for example, impregnating resin particles with a foaming agent to produce expandable resin particles, expanding the expandable resin particles to obtain expanded particles, and then expanding the expanded particles in a mold of a predetermined shape. It can be obtained by filling in, heating with steam or the like to fuse the foamed particles and in-molding.

When the collective packaging container of the present invention is composed of a styrene resin expanded particle molded product, the expansion ratio thereof is preferably 30 to 80 times, more preferably 40 to 70 times, and 50 to 60 times. It is particularly preferable that the number is twice. Within the above range, the cushioning property and the cushioning property are excellent, and the compression resistance and the shape retention property are also excellent, and the product is excellent as a collective packaging container for loading. In particular, in the case of a molded product of expanded polystyrene resin particles of 50 to 60 times, the bending strength is about 20 to 40 N / cm ² , and the compressive strength (10% strain compressive strength) is 10 to 30 N / cm ^2. Therefore, even if the collective packaging containers are stacked in about 20 stages, it becomes easy to obtain a container having sufficient strength and a size suitable for transportation on a pallet.

Examples of the collective packaging container of the present invention will be described in detail below.
The collective packaging container 1 according to the example has outer dimensions of a long side length (L) of 600 mm, a short side length (W) of 380 mm, and a height (H) of 93 mm. Further, the side wall thickness (Ta) on the long side is 22 mm, the side wall thickness (Tb) on the short side is 16 mm, and the thickness of the bottom wall is 15 mm. Further, the inside of the box body is divided into 10 sections by the protruding portion 4. Then, a fitting groove 5a having a width (u) of 39 mm and a depth (v) of 48 mm is provided in the side wall portion on the short side at a position 40 mm away from the apexes of the four corners of the box body, and the diagonal position thereof is provided. A fitting groove 5a having a width (u) of 35 mm and a depth (v) of 48 mm is provided in the side wall portion on the long side at a position 60 mm away from the vertices of the four corners. The width (u) is 39 mm and the depth (v) is 40 mm in the short side wall at a position 40 mm away from the vertices of the other four corners of the short side wall where the fitting groove 5a is provided. A fitting groove 5b of 48 mm is provided, and a width (u) of 35 mm and a depth (v) of 48 mm are fitted to the long side wall portion 60 mm away from the vertices of the four corners at the diagonal positions. A mating groove 5b is provided. On the inner surfaces of the side walls on the long side and the short side where the fitting groove 5 is provided, the height (h) rising from the upper surface of the bottom wall of the box body is 45 mm, and the thickness (d) is a step including the side wall. ) Steps 8a and 8b of 30 mm (Ta / d = 0.73, Tb / d = 0.53) are provided. The step portion 8b on the short side is formed over the entire width of the side wall on the short side, and the step portion 8a on the long side is formed so as to be connected to the step portion 8b on the short side at the four corner portions. . Further, even along the portion on the inner surface side of the side wall on the long side of the central portion in the longitudinal direction of the box body, the height (h) rising from the upper surface of the bottom wall of the box body is 45 mm, and the thickness (d) (step portion including the side wall). ) A step 8c of 30 mm (Ta / d = 0.73) is provided. A concave groove 10 is formed at a position where the central portion of the flange portion of the tray of the step portion 8 is in contact with the step portion so as to be recessed from the height of the step portion by about 5 mm.

  Further, on the side wall 3b on the short side, a cutout recess 7 cut out from the bottom side is formed on the outer surface of the side wall. The height (i) of the cutout concave portion is 15 mm from the upper surface of the bottom wall (30 mm from the lower surface of the bottom wall), and is formed at a position lower than the upper surface of the step portion 8. On the other hand, four cutout recesses 6 are formed in the side wall 3a on the long side, and one cutout recess 6 is formed in the side wall 3b on the short side. , And the opening ratio of the total area of the fitting groove 5 to all the side walls 3 is 20%. The bottom wall 2 is provided with a through hole 12 for ventilation in a tray storage portion partitioned by the protruding portion 4, and the opening ratio is 33%. On the bottom surface of the bottom wall of the side wall on the long side of the box, there is formed an engaging recess 13 that engages with the projection of the upper end of the side wall on the long side, which is formed in an uneven shape. L-shaped engaging projections 14 are formed on the side wall upper surfaces of the four corners of the box, and the bottom projections of the bottom wall of the four corners of the box are engaged with the engaging projections 14. L-shaped engagement recesses 15 are formed respectively, and the total engagement length thereof is 44% with respect to the outer peripheral length of the container. The height of the engaging portions (engaging recesses 13 and 15) is 10 mm. Further, the opening width (s) of the cutout concave portion 6 at the upper end of the side wall on the long side is 80 mm.

  As a tray having a flange portion that can be stored in a compartment partitioned by the protruding portion 4, there is a tray that packs strawberries distributed in Tochigi prefecture. The shape and size of this tray are such that the length between the ends of the flange portion (the tray long side direction) is about 165 mm, the width (the tray short side direction) is about 115 mm, and the height from the lower end of the flange portion to the lower end of the bottom is It is about 36 mm. When this tray is housed in a compartment, the protrusion 4 or the protrusion 4 and the step portion 8 support the flange portion, so that the bottom of the tray does not contact the bottom wall of the box and is held in a suspended state. To be done.

As shown in FIG. 8 and FIG. 9, the collective packaging container 1 is overlapped with the two containers 1, 1 with their opening directions facing each other and with the fitting grooves 5a, 5b fitted together so as to fit each other. When combined, the stacking height was 125 mm, which was about 70% of the stacking height compared to the case where two containers were simply stacked, and the occupied volume could be reduced.
As shown in FIG. 12, 5 pieces of the above-mentioned collective packaging container 1 are arranged in a pallet of 1200 × 1000 mm, 10 trays (300 g) containing strawberries are stored, and 20 trays are stacked. Although a load of about 60 kg was applied to, the collective packaging container was not damaged.

Although the embodiment of the collective packaging container according to the present invention has been described above, the present invention is not limited to the above-described embodiment at all, and the scope of the technical idea of the present invention described in the scope of the claims. It goes without saying that various modifications can be made within the embodiment.
For example, the shapes and dimensions of the protrusions 4 that divide the inside of the box described in the above embodiment are merely examples, and protrusions of various shapes and dimensions can be adopted, and the storage chambers and the penetrations that are divided can also be used. The number of holes is preferably 10 in total, but is not limited to 10 at all.

  The above-mentioned collective packaging container according to the present invention is lightweight without the need for assembling, and vibration and impact are difficult to be directly transmitted to the packed tray such as the stored strawberries, and the loading amount during transportation can be increased, Further, since it can reduce the transportation and storage space when it is not used, it can be suitably used for transporting soft fruits such as strawberries, grapes, cherries, loquats and figs.

DESCRIPTION OF SYMBOLS 1 Collective packaging container 2 Bottom wall 3 Side wall 3a Side wall 3b on the long side 3b Side wall 4 on the short side 4 Projection 4a Projection T-shaped in a top view (side wall projection)
4b Cross-shaped protrusions from the top view 5, 5a, 5b, 5c (not shown) Fitting groove 6 Notch recess 7 Notch recess to be a handle 8 Step 8a Step of long side wall 8b Short side wall Step portion 8c Step portion at the central portion in the longitudinal direction 9 Protrusion for preventing misalignment of tray 10 Recessed groove 11 Arc-shaped recess into which a finger can be inserted 12 Through hole for ventilation 13 Engagement recess 14 Engagement projection 15 Engagement recess T Strawberry packing tray F Flange part of tray

Claims (14)

A collective packaging container having a substantially rectangular parallelepiped box body having an upper surface opened and containing a plurality of trays packed with fruits, wherein the box body is formed of a foamed molded body, and the box body has a bottom wall. A side wall that rises from the peripheral portion is formed, and the inside of the box body is divided by a protrusion that supports the flange portion of the tray, and the vicinity of at least one corner of the four corners of the box body is provided. The side wall portion on the short side and the side wall portion on the long side in the vicinity of the corner portion at the diagonal position face the opening directions of the two collective packaging containers, and when they are overlapped with each other, they are aligned with each other. with which the fitting groove is provided side wall is fitted, the has stepped portions of the upper surface an L-shape that rises from the bottom wall is provided on all of the inner surface of the four corners of the box body, said fitting groove , Formed at a distance (δ) from the apex of the corner The distance (δ) is 1.1 to 3 times the side wall thickness (T) (however, the distance (δ) is from the apex of the corner to the apex side of the upper opening of the fitting groove). It is the distance to the opening end.) .   The side wall on the short side near the other corner of the side wall on the short side where the fitting groove is provided and the side wall on the long side near the corner at the diagonal position of the side wall The collective packaging container according to claim 1, further comprising:   The fitting groove is formed on the side wall on the long side near the other corner of the side wall on the long side where the fitting groove is provided and on the side wall on the short side near the corner located diagonally. The collective packaging container according to claim 1, further comprising: 4. The collective packaging container according to claim 1, wherein the width (u) of the fitting groove is 1.1 to 2 times the width (T) of the side wall .   A plurality of cutout recesses are formed on the side wall on the long side of the box body, and the top end part of the side wall on the long side side is uneven due to the cutout recesses, and the side wall on the long side side of the box body is formed. The collective packaging container according to any one of claims 1 to 4, characterized in that an engaging concave portion that engages with the convex-concave portion is formed on the bottom wall lower surface portion.   Engagement protrusions are formed on the side wall upper surfaces of the four corners of the box body, and engagement recesses that engage with the engagement protrusions are formed on the bottom wall bottom surface of the four corners of the box body. The collective packaging container according to any one of claims 1 to 5, which is characterized in that.   7. The collective package according to claim 1, wherein the box body has a long side length (L) of 570 to 615 mm and a short side length (W) of 330 to 400 mm. container.   The side wall height (H) of the box body is 70 to 100 mm, and the ratio (h / H) of the step height (h) to the side wall height (H) is 0.4 to 0.8. The collective packaging container according to any one of claims 1 to 7, which is characterized by being present.   The collective packaging container according to any one of claims 1 to 8, wherein a through hole is formed in the bottom wall of the portion divided by the projecting portion. 10. The step portion rising from the bottom wall is formed on the inner surface of each short side wall over the entire width of the short side wall. Collective packaging container.   A cutout recess serving as a handle is formed in the vicinity of the center on the outer surface side of the short side wall of the box body, and the upper surface of the stepped portion is formed at a position higher than the upper end of the cutout recess. The collective packaging container according to claim 10, wherein: The protrusion comprises a side wall protrusion protruding inward from the inner surface of at least the long side wall of the box body, and the cutout recess is formed in the side wall between adjacent side wall protrusions. The collective packaging container according to claim 5 , wherein:   The collective packaging container according to claim 12, wherein an opening width at an upper end of a side wall of the cutout recess is 30 to 120 mm.   A collective packaging container laminate, comprising a plurality of the collective packaging containers according to any one of claims 1 to 13 stacked vertically.

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