JP2001225876A - Protection sheet for banana container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protection sheet for banana container which does not cause damage to bananas while ensuring a specified degree of ventilation and is handlable and excellent in ensuring efficiencies and workabilities on transportation. SOLUTION: The protection sheet comprises a bottom sheet and a pair of side sheets. The bottom sheet is in a shape approximately the same as a bottom board of a container to be used and has a through hole for ventilation approximately at the center thereof, and each of the paired side sheets is in a height approximately the same as the height of side walls of the container to be used. The side sheet has a bending part whereon the sheet can be folded double, and the center in the vertical direction thereof is a closed smooth surface and ventilating holes are provided at the upper and lower ends thereof. The ventilating holes at the upper end are provided at positions within 35% of the height of the side sheet, separating from the upper end, and the ventilating holes at the lower end are desirably provided at positions within 40 mm from the lower end. The rate of opening for the ventilating holes of the side sheets is desirable to be 2 to 10% of the whole area of the sheets.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to the transportation of bananas,
The present invention relates to a banana container protection sheet used for the inner surface of a container used for storage.

[0002]

2. Description of the Related Art Bananas are mainly imported from localities such as the Philippines, Costa Rica and Taiwan. The bananas are harvested in a suitable time, and further ripened by the ripening process to become edible. Bananas are disinfected and washed immediately after harvesting, and then packaged in perforated polyfilm bags to prevent transpiration and stored in cardboard boxes. Then, the cardboard boxes are palletized and transported to the port. During sea transport, it is cooled to 13.5 ° C in the hold. In Japan, they are fumigated immediately after landing and delivered to importers. The importer enters the warehouse once, fills it with diluted ethylene gas through the through-hole provided on the short side wall of the cardboard box, and ages (colors) over 4 to 5 days while adjusting the temperature to 15 to 20 ° C. I do.

As shown in FIGS. 5 and 6, a cardboard box provided with through holes on the upper and lower surfaces and the short side surface is used for the banana box for transporting bananas. That is, the cardboard box 1
When the bottom plate 2 on the short side and the bottom plate 3 on the long side are folded, a rectangular bottom through-hole 5 formed at the center surrounded by the end surfaces of the bottom plates 2 and 3, and a cover on the short side When the plate 7 and the cover plate 9 on the long side are folded, the cover plate 7 is provided with a rectangular cover through-hole 10 formed at the center and surrounded by the end surfaces of the cover plates 7 and 9. Further, the short side wall is provided with a handle hole 11 at the upper center and a small hole 13 at the lower end corner.

[0004] Bananas are stored in a cardboard box having the above structure, and are stored in a row in a hold and stacked up and down in a plurality of stages. The bottom through hole 5 and the top through hole 10 are
It is a ventilation hole for circulating air inside the cardboard box in the hold. In the hold, during the sea transportation, the air blown up from below the cardboard box passes through the bottom through hole 5 of the cardboard box 1 to the upper through hole 10 to cool the contained banana to 13.5 ° C. .

In order for an importer to mature in a warehouse, cardboard boxes stacked in two stages in an aging room are arranged in two rows at a predetermined interval, and diluted ethylene gas is sent from the outside of the cardboard box. The method of sucking from between is adopted. The handle holes 11 and the small holes 13 function as ventilation holes for circulating the diluted ethylene gas in the cardboard box.

[0006]

However, the above-described conventional cardboard box transportation method has the following problems. That is, bananas need to be cooled immediately after harvesting in order to maintain freshness. However, there is a problem that cardboard boxes have rather a heat retaining property and a poor cooling effect. In addition, since the cardboard box is hygroscopic, the pressure resistance decreases during transportation, and the lower cardboard box may be crushed. Bulges and the stored bananas rub against each other, causing damage.

Further, the cardboard box has poor air permeability, and causes uneven coloring and aging during aging. If a large number of through holes are provided in order to improve the air permeability, the strength is reduced and it cannot be used.
In addition, the cardboard box is not only troublesome to dismantle but also may be injured.When transshipping, the inside is almost invisible, so it is handled messyly, and the soft flesh and epidermis after maturation are removed. The result is even worse. In addition, cardboard boxes are complicated to assemble and are disposable, which cannot be reused.
Along with the problem of disposal as garbage, waste of natural resources has led to the destruction of the global environment and has become a major social problem.

On the other hand, a plastic container can be used instead of a cardboard box, but the plastic container has the following problems. That is, the transportation and storage of the banana requires the ventilation hole as described above. However, a container having a large number of through-holes on the bottom and side walls as conventionally used cannot be used because the contact with the banana is severe and the banana is damaged. For example, the foldable container 20 as shown in FIG. 3 can fold the side walls 21 and 22 inward via hinges 24 and 25 provided between the bottom plate 23 and the side walls 21 and 22. Are provided with a large number of slit-shaped through holes 26 and 27. In such a container having a large number of through holes in the bottom plate and the side wall, the stored banana is rubbed by the through holes 26 and 27, so that the banana is damaged and cannot be provided to the market as a product.

Further, in the container 30 having a nesting structure in which the bottom can be fitted into the opening of the lower container as shown in FIG.
Are provided, and a large number of through holes 37 are provided in the side wall 35. Therefore, the stored banana is damaged by the through holes 33 and 37, and cannot be shipped as a product.
Generally, containers without holes in the bottom and side walls are also used, but bananas cannot be transported and stored in containers without air holes.

The present invention has been made in view of the above situation, and is used for an inner surface of a conventionally used container having a large number of through holes in a bottom portion and a side wall to ensure a predetermined air permeability. An object of the present invention is to provide a banana container protective sheet which maintains quality without being damaged by a banana, is easy to handle, and has excellent transport efficiency and workability.

[0011]

The present invention has the following configuration to achieve the above object. That is, the protective sheet for a banana container of the present invention comprises a bottom sheet and a side wall sheet, and the bottom sheet has substantially the same inner shape as the bottom plate of the container to be used, and has a ventilation hole substantially in the center. The pair of side wall sheets is substantially the same height as the side wall height of the container to be used, and has a bent portion that can be folded into two, and the central portion in the height direction is A closed smooth surface is provided, and ventilation holes are provided at an upper end and a lower end. Preferably, the ventilation hole at the upper end of the side wall sheet is provided within 35% of the sheet height from the upper end, and the ventilation hole at the lower end is provided within 40 mm from the lower end. Further, it is preferable that the opening ratio of the ventilation holes of the side wall sheet is 2 to 10% with respect to the entire area of the sheet. The side wall sheet may be a pair of side wall sheets having the same shape. Further, a lid sheet provided with a large number of ventilation holes may be combined with the bottom sheet and the pair of side wall sheets.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A protection sheet for a banana container according to the present invention will be described below in detail with reference to the drawings.
The protection sheet 40 includes a bottom sheet 41 and a side wall sheet 4.
3 and 43 and a cover sheet 45. Each of the sheets is made of plastic,
It is formed according to the size of the container to be used. When the above sheets are assembled, the bottom sheet 41 and the lid sheet 45 may be of a size that fits inside the side wall sheet 43, but on the contrary, the bottom sheet 41 and the bottom sheet 41 And a size sandwiched between the cover sheet 45 and the cover sheet 45. That is, the long side and the short side of the bottom sheet 41 and the lid sheet 45 may be smaller or larger than the long side and the short side of the side wall sheet 45, respectively.

The bottom sheet 41 has a rectangular ventilation hole 41a at the center. Through hole 41a
Is for circulating cool air in the hold during sea transportation. For example, the size of the bottom sheet 41 is 370 mm on the short side × 570 mm on the long side, and the through hole 41a is 400 mm long × short. It can be formed in a direction of 40 mm. The size of the through hole 41a is such that the stored banana does not fall, and may be appropriately determined in consideration of the circulation efficiency of ventilation.

The pair of side wall sheets 43, 43 are divided and formed at opposing corners so as to be attached to two surfaces orthogonal to each other via the corners of the container.
3a makes it freely foldable. The height of the side wall sheets 43, 43 is formed in accordance with the height of the inner surface of the side wall of the container to be used, but the size of the container to be used is determined from workability in the hold, loading efficiency, ease of handling, and the like. Is done. Considering such workability,
The height of the side wall is preferably about 150 to 200 mm, and the height of the sheet can be set to 150 to 200 mm in accordance with the height of the side wall. Vent holes 43b are formed at the upper end and the lower end of the side wall sheet 43, respectively.
And a vent hole 43c, and the central portion of the height is made a smooth surface so as not to be damaged even if the banana comes into contact.

The height H1 at which the ventilation holes 43b are provided is in a range where contact with the banana is small, for example, 35 heights from the upper end.
%, And the height H2 at which the ventilation holes 43c are provided is provided within 40 mm from the lower end. In this way, by limiting the positions where the ventilation holes are provided to the upper end and the lower end of the side wall, the air permeability is sufficiently ensured and the banana is not damaged. The opening ratio of the ventilation holes 43b and 43c is provided in consideration of the circulation efficiency of the internal air, but is set to 2 to 10% with respect to the area of the sheet 43 as a whole.
If it is less than 2%, sufficient air permeability cannot be obtained, and
% Or more, the opening area becomes too large, and the stored banana may be damaged.

Further, the shape of the ventilation holes 43b and 43c,
The size and the like are not particularly limited, and may be formed by continuously forming small holes, or may be one slit-shaped long hole,
A combination of these may be used. The ventilation holes 43b, 4
3c is provided in consideration of the internal air circulation efficiency, and is preferably provided within 30% from the upper end and within 35 mm from the lower end.

The cover sheet 45 has a number of small holes 45a for ventilation, and ventilation holes 45b serving as hand holes at both ends in the longitudinal direction. The lid sheet 45 is effective when used for a container without a lid having an open top. Therefore, the small hole 4
It is preferable that the 5a and the ventilation hole 45b be sized so as not to damage the banana even when it comes into contact with the stored banana.

Further, the small hole 45a and the ventilation hole 45b
May be provided uniformly over the entire surface of the lid sheet 45, but may be provided at the center as a smooth surface at the periphery, or at the center smaller than the periphery.

Next, a method of using the protective sheet 40 will be described. For example, when the container 20 is used for a foldable container 20 as shown in FIG. 3, the container 20 is first assembled as shown, a bottom sheet 41 is laid on the upper surface of the bottom plate 23, and then a side wall sheet 43 is attached. It is attached to the inner side wall of the container 20. Side wall sheet 43
Is bent freely by the bent portion 43a, so that the bent portion 43a is positioned at the corner of the container 20 and can be spread along the inner surface of the side wall. Then, after storing the banana, the cover sheet 45
May be placed on the upper end of the side wall sheet 43. The use of the cover sheet 45 can be omitted as appropriate.

After taking out the stored banana, the side wall sheet 43 may be bent from the bent portion 43a to be folded into two, and the lid sheet 45 may be overlaid thereon (see FIG. 2). If the container to be used is foldable, it may be folded according to its folding structure. For example, in the container 20 shown in FIG. 3, the side wall sheet 43 is folded, overlapped with the bottom sheet 41 and the lid sheet 45, and stored on the bottom plate 23. After that, first, the short side wall 22 may be folded inward on the protective sheet 40 via the hinge 25, and then the long side wall 21 may be folded inward via the hinge 24. .

Since the protective sheet 40 has a small thickness, it is accommodated between the bottom plate 23 and the side walls 25 and 26. Therefore, since the protective sheet 40 can be transported and stored integrally with the container, the handling is not only easy but also there is no risk of loss. In addition, protective sheet 4
0 can be folded and stored even when used in a container having a nesting structure as shown in FIG. 4, so that it can be transported and stored integrally with the container.

Although the protective sheet has been described including the cover sheet, the cover sheet can be omitted if necessary. Further, the side wall sheet is a pair of side wall sheets divided into two, but may be a single side wall sheet attached to the entire inner surface of the container side wall. When one sheet for the side wall is used, the bent portions may be provided at three places. The container using the protective sheet 40 is preferably an assemblable box that can be folded when not in use. However, the assembling mechanism is not limited, and a container using a known assembling mechanism is used. Should be fine. The container may be a container that can be assembled, or may be a container having a nesting structure that can reduce the volume by fitting the lower part of the upper container into the upper opening of the lower container.

[0023]

As is apparent from the above description, according to the present invention, since the bottom sheet is provided with a ventilation hole only in the central portion, the stored banana is not damaged, and the cool air is smoothly circulated. Can be cooled rapidly. It is particularly effective for cooling in the hold. Further, the side wall sheet is provided with ventilation holes only at the upper and lower portions where the banana does not easily come into contact, so that there is no damage. further,
By providing the lid sheet, it is possible to prevent the stored banana from being damaged by contacting the bottom plate of the upper container. In particular, it is possible to prevent bananas from being damaged by pitching and rolling during marine transportation.
Further, since this protective sheet is used for a conventional container, the container can be used effectively.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a protective sheet according to the present invention.

FIG. 2 is an explanatory perspective view of a folded state.

FIG. 3 is a perspective view showing an example of a container to be used.

FIG. 4 is a perspective view showing another example of the container.

FIG. 5 is an explanatory perspective view of a conventionally used cardboard box.

FIG. 6 is an explanatory sectional view showing a stored state of a banana.

[Explanation of symbols]

 40: protective sheet 41: bottom sheet 41a: through hole 43: side wall sheet 43a: bent portion 32b, 43c: ventilation through hole 45: lid sheet 45a: small hole 45b: ventilation hole

Continued on the front page F term (reference) 3E066 AA21 CA01 DA05 HA03 JA01 LA02 MA01 NA53 3E067 AA11 AB09 AC03 BA05C BA09B BB14B BC06B BC06C BC07B CA03 EB27 ED08 FA04 FC01 GB02 GD01 GD02 3E096 AA03 BA27 CA02 CB03 DA03 FA03

Claims (5)

[Claims] 1. A bottom sheet and a side wall sheet, the bottom sheet having substantially the same inner shape as the bottom plate of a container to be used, and having a ventilation hole formed substantially in the center thereof. The pair of side wall sheets are almost the same height as the side wall height of the container to be used, and have a bent portion that can be bent into two, and a central portion in the height direction has a closed smooth surface. A protective sheet for a banana container, wherein ventilation holes are provided at an upper end and a lower end. 2. A ventilation hole at an upper end of the side wall sheet,
2. The banana container protective sheet according to claim 1, wherein the protective sheet is provided within 35% of the sheet height from the upper end, and the vent hole at the lower end is provided within 40 mm from the lower end. 3. The opening ratio of the ventilation hole of the side wall sheet is as follows:
The banana container according to claim 1 or 2, wherein the total area of the sheet is 2 to 10%. 4. The banana container protection sheet according to claim 1, wherein the side wall sheet is a pair of side wall sheets having the same shape. 5. The lid sheet according to claim 1, wherein a lid sheet is provided together with the bottom sheet and the pair of side wall sheets, and the lid sheet is provided with a large number of small holes for ventilation. The protective sheet for a banana container according to any one of the preceding claims.