JPH10167346A - Cold-keeping container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cold-keeping container in place of another container made of foamed styrol resin. SOLUTION: This container is comprised of a double-structure including an intermediate box 1 of rectangular shape for storing a food 7 to be frozen such as frozen food and a heat regenerative material 8 and an outer box 11 of rectangular shape for holding the intermediate box 1 in hanging state with a predetermined space between upper and lower both surfaces and each of the four side surfaces of the intermediate box 1. In addition, an air layer is present between the intermediate box 1 and the outer box 11 sealingly closed with a sealing tape or the like at a clearance in the outer box 11 so as to perform a thermal insulation with a layer of air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cold storage container used in place of a heat insulation container made of styrene foam resin.

[0002]

2. Description of the Related Art A conventional refrigerated container of this type is made of a styrofoam resin. A refrigerated container such as frozen food and a regenerator material such as dry ice are packed in the refrigerated container and transported. doing.

[0003]

Such refrigerated containers made of styrofoam resin are often used as one-way containers, making them difficult to recycle, and are also difficult to dispose of, and also contribute to the generation of large amounts of industrial waste. ing. Therefore, the present invention has been made with the object of providing a cold storage container that replaces the styrofoam resin having various problems as described above, and an outer box that can be assembled and disassembled by disposing a middle box filled with a cold storage product and a cold storage material. It has a double structure in which it is held in a suspended state inside, and an air layer is appropriately provided between each side of the inner box and the outer box, and the air circulation of these air layers is fixed so that the heat insulation effect is maintained. It is intended to do so.

[0004]

In order to achieve the above object, a cold storage container according to the present invention comprises a middle box for storing cold-insulated items such as frozen foods and a cold storage material, and upper and lower surfaces of the middle box and four sides. The inner box has a double structure with an outer box that is held in a suspended state by making line contact with each side surface at a required interval, and the gap between the outer boxes is sealed with a sealing tape or the like. Then, an air layer is present between the inner box and the outer box to insulate the inner box.

A lid piece and a bottom piece are respectively connected to the upper and lower ends of the four side surfaces of the outer box via folding lines, and the opposite ends of the lid pieces and the bottom pieces have the same length via folding lines at opposite ends. A support piece is connected in series, and each of the lid piece and the bottom piece is bent inwardly at a fold line, and each support piece is bent inwardly at a fold line to project the support piece into the outer box. The front end of each was line-contacted with the upper and lower ends of the inner box.

[0006] Further, projecting pieces are provided opposite to both ends at the tip of each of the supporting pieces, and the four sides of the middle box are sandwiched between these projecting pieces to fix the middle box to the center of the outer box. An interval was maintained between the four side walls.

The corners of the four sides of the outer box are chamfered to a required width to form corner walls, and the corners of the four sides of the inner box are in line contact with the inside of these corner walls. Then, the inner box is held in the outer box with an interval.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a cold storage container according to the present invention will be described. FIG. 1 is an external view of a cold storage container according to the present invention, that is, a perspective view of an outer box, in which an inner box as shown in FIG. As shown in the cross section in FIG. 3, it is held in a suspended state and configured in a double structure.

The inner box 1 is formed of a shallow rectangular box 2 open on the upper surface, and is formed so as to cover the opening provided on the upper surface and to be opened and closed by the lid 3. The cover 3 locks the central portion 4 a of the bent piece 4 extending at the tip end with the cut groove 6 provided in the side wall 5. As shown in FIG. 5, a cold storage product 7 such as a frozen food in a container with a lid and a cold storage material 8 such as dry ice are accommodated in the inner box 1 in a polyethylene bag 9 as shown in FIG. The opening of the polyethylene bag 9 can be sealed by a fastener 10 so as to be freely opened and closed.

Next, the outer box 11 for holding the inner box 1 in a suspended state will be described. FIG. 7 is an exploded plan view in which four side walls 13a to 13d are continuously provided via each vertical folding line 12. As shown in FIG. Glue allowance pieces 14 extend from the outer ends of the side walls 13a to 13d. The lid pieces 17a to 17d and the bottom pieces 18a to 18d are respectively connected to the upper and lower ends of the side walls 13a to 13d via horizontal folding lines 15 and 16, and the lid pieces 17a to 17d and the bottom pieces 18a to 18d are further connected. Supporting pieces 21a to 21 having the same height at the ends via horizontal folding lines 19 and 20
d and 22a to 22d are extended. Each of these support pieces 2
Projecting pieces 23, 23 having a fixed width are protruded from both left and right ends of 1a to 21d and 22a to 22d. The long grooves 24, 2 each having a length reaching the support pieces 21a and 21c and the support pieces 21a and 22c at the center in the longitudinal direction of the opposing lid pieces 17a and 17c and the bottom pieces 18a and 18c.
5 is provided. On the other hand, the lid pieces 17b and 17d facing each other
And the supporting pieces 21b, 21d and 2 of the bottom pieces 18b and 18d
Two cuts 26 and 27 are provided at the center positions in the longitudinal direction of 2b and 22d at a required interval.

As shown in FIG. 8, the outer box 11 is formed by bending each of the vertical fold lines 12 inward in order, assembling the side walls 13a to 13d into a flat rectangular shape, and gluing and fixing the glue allowance 14 on the inside of the side wall 13a. Then, the side walls 18a and 18c are
And bent inward with each other, and furthermore, the supporting piece 22 at the tip thereof
a and 22c are bent inwardly at the respective horizontal folding lines 20 to stand upright. Next, the bottom pieces 18b and 18d are bent inwardly at the respective horizontal fold lines 16, and the support pieces 22b and
The support pieces 22b and 22d are bent inwardly by the horizontal lines 20 so that the support pieces 22b and 22d are inserted into the long grooves 25 and 25 provided in the bottom pieces 18a and 18c, and the cuts 27 and 27 are formed.
The supporting pieces 22a to 22d are sandwiched between the supporting pieces 22a and 22c, so that the supporting pieces 22a to 22d are erected on the bottom surface of the outer box 11 shown in FIG. In this state, the support pieces 22b and 22d are superposed. And each side wall 13a-13d of each of these upright support pieces 22a-22d.
Projecting pieces 23, 23 project from both ends in contact with. Furthermore, butted ends of the bottom pieces 18b and 18d, both side ends of the bottom pieces 18b and 18d, and side walls 13a and 13c.
The sealing tape 28 is stuck to the gaps where the lower ends of the respective parts are opposed to each other and sealed.

Then, the inner box 1 containing the cold storage items and the cool storage material 8 as described above is housed in the outer box 11 assembled as shown in FIG. 8 as shown in FIG. The accommodated inner box 1 is line-contacted and supported while being sandwiched between the protruding pieces 23, 23 of the support pieces 22a to 22d whose bottom faces are combined in a K-shape on the bottom face of the outer box 11 and stand upright. At the same time, the four side walls 5 of the inner box 1 have an interval between the width of each protruding piece 23 and the four side walls 13a to 13d of the outer box 11, as shown in FIG. In this state, as shown in FIG.
7a and 17c are bent inward at each horizontal folding line 15 so that the tips of the support pieces 21a and 21c are in line contact with the upper surface of the inner box 1, and the projecting pieces 23 and 23 provided on both sides of the support pieces 21a and 21c are connected to the center. Side wall 5 of box 1 and four side walls 1 of outer box 11
3a to 13d are held at intervals formed by the inner walls.

Next, as shown in FIG. 12, the lid pieces 17b and 17d are bent inwardly at the respective horizontal fold lines 15, and the support pieces 21b and 21d at the tips thereof are further bent inwardly at the respective horizontal fold lines 19 to form these support pieces. 21b, 21d with lid piece 17
a, 17c, the cut-outs 26, 26 of the support pieces 21b, 21d are sandwiched between the support pieces 21a, 21c, so that the bottom pieces 18a-1
The support pieces 21a to 21d are vertically projected in a state where the support pieces 21a to 21d are combined in a K-shape on the lower surface of the top of the outer box 11 symmetrically with 8d, and are brought into line contact with the top of the middle box 1. Then, projecting pieces 23 projecting from both ends of each of the supporting pieces 21a to 21d projecting into the outer case 11
As shown in FIG. 3, opposing side walls 5 of the inner box 1 and the outer box 11
Are kept between the side walls 13a to 13d. Further, the sealing tape 2 is formed so that the butting ends of the lid pieces 17b and 17d and the gaps where the both ends of the lid pieces 17b and 17d and the upper ends of the side walls 13a and 13c face each other.
8 is adhered and sealed.

Thus, the upper and lower surfaces of the inner box 1
a to 21d and 22a to 22d, and the four side walls 5 are line-contacted by the respective projecting pieces 23 to be held in a suspended state at an equal interval with the outer box 11 so that the inner box 1
An air layer exists between the outer case 11 and each side surface of the outer case 11 as appropriate. The air in these air layers is filled with a gap and a bottom piece 18 where the butting ends of the tips of the lid pieces 17b and 17d of the outer box 11, the both ends of the lid pieces 17b and 17d and the upper ends of the side walls 13a and 13c face each other.
b, 18d and the bottom piece 18b, 1
8d and the lower ends of the side walls 13a and 13c straddle each other, and the sealing tape 28 is stuck and sealed, so that the entire outer box 11 is sealed, and the inner box 1 and the outer box are sealed. The air in the air layer existing between 11 is fixed and is insulated by the air layer.

FIGS. 13 and 14 show another embodiment in which the middle box 1 accommodates the cold storage-required product 7 and the cold storage agent 8. FIG. Although illustration is omitted in this embodiment, the cold storage product 7 and the cold storage material 8 are directly accommodated in the inner box 1 without being accommodated in the polyethylene bag, and the inner box 1 is attached to the sheet 29 (self-adhesive packaging material). For example, it is wrapped with Inoac Corporation (trade name: Clonel), and the peripheral portion is polymerized and thermally sealed. Then, the inner box 1 sealed with the sheet 29 of the self-adhesive packaging material as described above is put into the outer box 1 in the manner described above.
1 is suspended in the air.

FIG. 15 and subsequent figures show another embodiment in which the shape of the outer box 11 is different. In this embodiment, the outer case 11
The inner box 1 to be held in a is the same as in the above-described embodiment. As shown in a developed plan view in FIG. 16, the outer box 11 a is provided with two vertical fold lines 12, 12 at each corner of each of the four side walls 13 a to 13 d at a required interval.
Corner walls 13e to 13h are formed at 135 degrees to the side walls 13a to 13d. The outer box 11a is assembled in the same manner as the outer box 11 and the inner box 1 is mounted as shown in FIG. 18 in a state where the support pieces 22a to 22d are erected on the bottom surface as shown in FIG. Let it be accommodated.

As shown in FIGS. 18 and 19, the accommodated inner box 1 is fixed in such a manner that the corners of the four side walls 5 are in line contact with the inner side surfaces of the corner walls 13e to 13h of the outer box 11a. However, a space of a certain width exists between each side wall 5 of the middle box 1 and each side wall 13a to 13d of the outer box 11a. Then, similarly to the outer box 11, the lid pieces 17a to 17d are arranged in the order of FIGS.
Is folded so that the inner box 1 is moved to the outer box 11a as shown in FIG.
It can be held suspended in the air. The air in the air layer existing in the space is applied to the outer case 11 according to the outer case 11.
a of the abutting ends of the tips of the lid pieces 17b and 17d, the gaps where the both ends of the lid pieces 17b and 17d face the upper ends of the side walls 13a and 13c and the corner walls 13e to 13h, and the tips of the bottom pieces 18b and 18d. Butt end and bottom piece 18
As shown in FIG. 15, a sealing tape 28 is adhered and sealed, so that both side ends of the b and 18d and the lower ends of the side walls 13a and 13c and the corner walls 13e to 13h straddle each other. The entire box 11a is sealed, and the air existing in the space is fixed and is insulated by the air.

The inner box 1 is made of paperboard, and the outer boxes 11, 1
1a can be used repeatedly by forming it from corrugated cardboard. The surfaces of the outer boxes 11 and 11a are preferably formed in glossy white or silver with good heat reflectivity to prevent radiant heat. In addition, the outer boxes 11, 11a and the inner box 1 are not limited to the above-mentioned paper, and may be formed of plastic or metal.

[0020]

As described above, the refrigerating container according to the present invention has a structure in which the upper and lower surfaces and the four side surfaces of the inner box containing the refrigerating material and the regenerator material are kept in the outer case at equal intervals. Is held between the outer box and the inner box by sealing the outer box by applying a sealing tape to the gap between the opposing butting ends of the lid and bottom pieces of the outer box and the side wall. The air is fixed in the outer box without the convection of the air layer, and is insulated.
In addition, since the support pieces extended to the lid piece and the bottom piece above and below the middle box and the outer box are fixed by line contact, the four sides of the middle box and the outer box are stabilized even when nothing is interposed. . Thus, the refrigerating container of the present invention allows the cooled air to be present in the space between the inner box and the outer box in a state where conduction and convection do not occur, thereby obtaining an excellent refrigerating effect. it can.
In addition, the cold storage container of the present invention has a simple structure and is easy to manufacture, and the outer box can be easily assembled and disassembled so that it can be recycled. When made of paper, it can be recycled, and has many advantages such as effective utilization of resources and less pollution and industrial waste.

[Brief description of the drawings]

FIG. 1 is an external view of a cool container according to the present invention, that is, a perspective view of an outer box.

FIG. 2 is a perspective view of a middle box.

FIG. 3 is a longitudinal sectional view showing a state in which a middle box is suspended in an outer box.

FIG. 4 is an exploded perspective view of the inner box and the contents.

FIG. 5 is a perspective view showing a state in which a cold storage product and a cold storage material are accommodated in a polyethylene bag and sealed.

FIG. 6 is a perspective view of a state in which the polyethylene bag in the state of FIG. 5 is housed in a middle box.

FIG. 7 is a developed plan view of the outer box.

FIG. 8 is a perspective view of an assembled outer box.

FIG. 9 is a perspective view of a state where a middle box is accommodated in the outer box in the state of FIG. 8;

FIG. 10 is a transverse sectional view of FIG. 9;

FIG. 11 is a perspective view of a state where a lid piece is assembled to the bottom box.

FIG. 12 is a perspective view showing a state where another lid piece is assembled following FIG. 11;

FIG. 13 is a perspective view of a state where the inner box is wrapped with a sheet of a self-adhesive packaging material.

FIG. 14 is a perspective view showing a state where the packaging is completed, following FIG. 13;

FIG. 15 is a perspective view of the outer appearance of the cool box, which is different from FIG.

FIG. 16 is an exploded perspective view of the outer box shown in FIG.

FIG. 17 is a perspective view of the outer box shown in FIG. 16 in an assembled state corresponding to FIG. 8;

18 is a perspective view of a state in which the inner box is housed in the outer box in the state of FIG. 17;

FIG. 19 is a transverse sectional view of FIG. 18;

FIG. 20 is a perspective view of a state where a lid piece is assembled to the outer box.

FIG. 21 is a perspective view showing a state where another lid piece is assembled following FIG. 20;

FIG. 22 is a longitudinal sectional view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Middle box 5 Side wall 7 Cold storage item 8 Cold storage material 11 Outer box 12 Vertical folding line 13a-13d Side wall 13e-13g Corner wall 15,16 Horizontal folding line 17a-17d Cover piece 18a-18d Bottom piece 19,20 Horizontal folding line 21a-21d , 22a to 22d Supporting pieces 23, 23 Projecting pieces

Claims (4)

[Claims] 1. A middle box for storing cold storage products such as frozen foods and a cold storage material, and the middle box is line-contacted with the upper and lower surfaces and the four sides of the middle box while maintaining a required interval therebetween. The outer box has a double structure in which the box is held in a suspended state, and the gap between the outer boxes is sealed with a sealing tape or the like so that an air layer exists between the inner box and the outer box to insulate the outer box. A cold storage container characterized in that: 2. A lid piece and a bottom piece are respectively connected to upper and lower ends of four sides of the outer box via folding lines, and the opposite ends of each of the lid pieces and the bottom piece have the same length via folding lines at opposite ends. The cover piece and the bottom piece are each bent inwardly at a fold line to project the support piece into the outer box, and the tips of the support pieces are brought into line contact with the upper and lower ends of the middle box. The cold storage container according to claim 1, wherein the middle box is suspended in the outer box. 3. The cold storage container according to claim 2, wherein projecting pieces are opposed to both ends at the tip of each of said supporting pieces, and the four sides of the inner box are sandwiched between these projecting pieces. 4. The corners of the four sides of the outer box are chamfered vertically to a required width to form corner walls, and the corners of the four sides of the inner box are brought into line contact with the corner walls. The cold storage container according to claim 1.