KR100239158B1 - Insulated container - Google Patents

Abstract

The present invention relates to a heat insulating container used for a cooler box, a thermos bottle, a temperature drop, and the like, and a method for manufacturing a heat insulating material and a heat insulating container suitable for the same, wherein the heat insulating container of the present invention is a double wall container in which an inner container and an outer container are integrally bonded. A heat insulation container formed by forming a heat insulation layer between inner and outer containers of the present invention, wherein an insulation material formed by enclosing at least one low thermal conductive gas of xenon, krypton, or argon in an encapsulation body is disposed in a gap between the inner and outer containers. will be. The manufacturing method of this heat insulation container is provided by the process of sealing a sealing body by inserting a sealing body in the clearance gap of a double wall container, and filling a sealing body inserted in the clearance with low thermal conductivity gas.

Description

Insulation container, insulation material and manufacturing method of insulation container

1 is a longitudinal sectional view showing an example of the heat insulation container according to the present invention,

2 is a cross-sectional view of the heat insulation container according to the present invention,

3 is a development view of the encapsulation body,

4 is a view for explaining a manufacturing method of a heat insulating container according to the present invention, a longitudinal cross-sectional view showing the previous state by filling the gas into the sealing body,

5 is a cross-sectional view showing a heat insulating plate as an example of the heat insulating material of the present invention.

<Explanation of symbols for main parts of drawing>

1: Insulation container 2: Inner container

2a: Flange 3: Outer container

3a: side wall portion 3b: bottom plate

3c: opening 4: gap

5: sealing body 5a: side part

5b: Bottom 5c: Gas Inlet

7: foam insulation 8: heat insulation layer

11: insulation board 12: double wall structure

12a: wall material 12b: wall material

13: sealing body 14: gas

15: heat insulating material 16: urethane foam

17: multilayer wrinkles

The present invention relates to a method for manufacturing a heat insulating container used for cooler box, thermos, thermal insulation, etc. and a heat insulating material and heat insulating container suitable for the same, more specifically, the inside and outside of the double-walled container integrally bonded to the inner container and the outer container. The present invention relates to a heat insulating container in which a heat insulating material formed by enclosing a gas having a lower thermal conductivity than air is enclosed between a container having a gas barrier property, a heat insulating material used for the same, and a method of manufacturing the heat insulating container.

Conventionally, the heat insulation container such as the cooler box is formed of synthetic resin, and the inner container and the outer container are filled with organic powder such as rigid urethane foam or expanded polystyrene, inorganic powder such as superplastics or perlite in the gap between the inner and outer containers. Thus, a heat insulating container constituted by forming a heat insulating layer is provided.

Moreover, the heat insulation container which formed the inner container and the outer container with the metal material, and provided the vacuum insulation layer in the clearance gap between these inner containers and the outer container is provided.

However, since the heat insulation container filled with heat insulating materials, such as the former foam, was required to increase the thickness of the heat insulation layer in order to improve the heat insulation performance of the heat insulation container. In addition, in order to efficiently fill the gap between the inner and outer containers in order to fill the foam efficiently, a predetermined thickness is required for the insulating layer. As a result, the insulating layer may be formed to have a thickness of 5 to 10 times that of the insulating container having a vacuum insulating layer. There is a need. For this reason, the heat insulation container filled with the heat insulating material was low in volumetric efficiency, ie, the capacity ratio of the internal container with respect to the total volume of the state which closed the opening of the heat insulation container was not satisfactory enough to be portable.

In addition, even if the heat insulating container having the latter vacuum insulation layer is formed thin thickness of the heat insulating layer can be obtained satisfactorily portable because of excellent heat insulating performance, there is a problem that the manufacturing method is complicated and expensive. In addition, since an atmospheric pressure is applied between the inner container and the outer container, the formation of the inner box and the outer container is limited to the internal pressure structure that can withstand the atmospheric pressure, making it difficult to manufacture a rectangular box shape with a flat wall that is easy to use. It was.

An object of the present invention is to provide a heat insulating container having a low manufacturing cost, excellent heat insulating performance, high volumetric efficiency, a heat insulating material suitable for the same, and a manufacturing method of the heat insulating container.

A first aspect of the present invention is a heat insulation container in which a heat insulation layer is formed between an inner and an outer container of a double walled container in which an inner container and an outer container are integrally bonded, wherein at least one of xenon, krypton, and argon is disposed between the inner and outer containers. It is a heat insulation container which arrange | positioned the heat insulating material which enclosed one kind of low thermal conductivity gas in the sealing body.

In a preferred embodiment of this heat insulating container, the encapsulation member is made of a material selected from a synthetic resin film, a metal laminate synthetic resin film, and a metal-deposited synthetic resin film. The heat insulating material may be 5 mm or less in thickness. In this gap, a plurality of heat insulating materials having a thickness of 5 mm or less may be disposed in a laminated state. A flexible foam insulating material may be filled in the gap between the inner and outer containers of the double wall container and the insulating material.

A second aspect of the present invention is a heat insulating material in which at least one low thermally conductive gas of xenon, krypton, or argon is enclosed in an encapsulation body made of a film having a gas barrier property.

In a preferred embodiment of this heat insulating material, the encapsulation material is made of a material selected from a synthetic resin film, a metal laminate synthetic resin film, and a metal-deposited synthetic resin film. The inner surface of the sealing body may be formed with a multi-layered wrinkle for preventing gas convection. Moreover, a heat insulating material fills many sealing bodies, it is made by enclosing a low thermal conductive gas in each sealing body, and it is good also as a structure which made the thickness of each layer 5 mm or less. In addition, the sealing body may be disposed between the walls of the double wall structure, and a flexible foam insulation may be disposed between the double wall structure and the sealing body.

According to a third aspect of the present invention, there is provided a method of manufacturing a heat insulation container formed by forming a heat insulation layer between an inner and an outer container of a double walled container in which an inner container and an outer container are integrally bonded, and the sealing body is disposed in advance in the gap between the inner container and the outer container. In one state, the inner container and the outer container are integrally joined, and then the encapsulation body is filled with at least one low thermal conductive gas of xenon, krypton, and argon, and the encapsulation body is sealed to form an insulating layer. It is a method of manufacturing a thermal insulation container.

In a preferred embodiment of this method, the encapsulation consists of a material selected from a synthetic resin film, a metal laminate synthetic resin film, and a metal-deposited synthetic resin film. The thickness of the heat insulation layer may be 5 mm or less. A plurality of encapsulation bodies may be stacked in a gap between the inner container and the outer container, and a plurality of gas encapsulation bodies may be laminated by encapsulating low thermal conductive gas in these encapsulation bodies, respectively.

In a more preferred embodiment of this method, a tubular gas inlet is formed in the encapsulation, an opening for evolving the gas inlet is formed in the double wall container, and the encapsulation is formed between the inner and outer containers of the double wall container. When placed in the gap, the gas inlet is led outward from the opening of the double wall container, the low heat conductive gas is filled into the encapsulation body disposed in the double wall container from the gas inlet, and then the gas inlet is sealed. (Iii) In addition, the sealed gas inlet may be inserted into the opening to close the opening.

The thermal insulation container of the present invention is a thermal insulation material formed by enclosing at least one low thermal conductive gas of xenon, krypton, or argon in an encapsulation body in a gap between an inner container and an outer container. Since the heat insulation layer can be formed thin compared with the container, the volumetric efficiency of a heat insulation container can be improved. That is, since the thickness of the heat insulating layer can be reduced to less than half with heat insulating performance equivalent to or higher than that of the heat insulating container using a heat insulating material such as foam, the inner volume can be increased by that amount. In addition, because the heat resistance of the urethane itself is poor heat insulating container using a urethane foam as a heat insulating material, even if a synthetic resin material having good heat resistance in the inner container and the outer container can not be used, such as a thermos containing hot water, etc. The container, the outer container, and the encapsulation body are made of a synthetic resin or metal having good heat resistance, and thus can be used as a thermal insulation container. In addition, by using a gas-filled encapsulation material as a heat insulating material, the heat insulating container can be reduced in weight.

In addition, since no atmospheric pressure is applied to the inner container and the outer container compared to the insulated container having a vacuum insulation layer, it is not necessary to form the insulated container with an internal pressure structure, so that the insulated container can be made thinner and lighter. It can be formed into various shapes such as a box shape of a model.

In addition, since a flexible insulating material is filled between the inner and outer containers and the encapsulation member, the insulating performance of the insulation container can be increased by supplementing the insulation performance of the edge portion of which the thickness of the encapsulation body becomes thin with the insulating material.

According to the manufacturing method of the heat insulation container of this invention, in the state which arrange | positioned the sealing body in the clearance gap between the inner container and the outer container previously, the inner container and the outer container are integrally joined, and then the low heat conductive gas is filled in the sealing body, Since it seals, a sealing body can be mounted in a clearance gap in the state which collapsed. For this reason, a sealing body can be attached even in a narrow and small gap. In addition, since the heat insulation container can be manufactured by a simple operation of filling and sealing the gas with the gas, the workability of the heat insulation container can be improved as compared with the filling operation of the foam or the vacuum sealing operation. In addition, since the manufacturing work of the heat insulation container is simplified, a foam or a vacuum device becomes unnecessary, thereby reducing the manufacturing cost of the heat insulation container.

EMBODIMENT OF THE INVENTION Hereinafter, although this invention is demonstrated in detail based on an Example, the scope of the present invention is not limited only to description of these Examples. It is needless to say that the description of these embodiments is merely an example, and various changes and modifications are possible.

Example 1

1 and 2 show an example of the heat insulating container of the present invention. This insulated container 1 is arranged in the inner container 2, the outer container 3 arrange | positioned around this inner container 2, and the clearance gap 4 between these inner container 2 and the outer container 3. It consists of the encapsulated body 5 (insulation material). In this encapsulation member 5, a low thermal conductivity gas made of one of argon, xenon, krypton, or a mixture thereof is filled and sealed at atmospheric pressure. The inner container 2 and the outer container 3 have a double wall structure which is integrally joined with a gap. In the gap 4 between the inner container 2 and the outer container 3, the encapsulation body 5 described above is disposed to form a heat insulating layer 8. The thickness of this heat insulation layer 8 is set to 5 mm or less so that the gas in the sealing body 5 may not be convective.

Low thermal conductivity gases have xenon (κ = 0.52 X 10 ² W · m ⁻¹ · K), which has a thermal conductivity (κ) less than air (2.41 × 10 ² W · m ⁻¹ · K ⁻¹ ; 0 ° C.) and an inert gas ^-1 ; 0 ° C.), krypton (κ = 0.87 X 10 ² W · m ⁻¹ · K ⁻¹ ; 0 ° C.), argon (1.63 X 10 ² W · m ⁻¹ · K ^{−1 ′} ; 0 ° C.) Each gas or mixture of gases is used. These xenon, krypton, and argon gas are especially preferable because they have a low thermal conductivity and do not have a problem on environmental conservation depending on their use.

The inner container 2 and the outer container 3 are made of synthetic resin materials such as ABS resin, polypropylene, polyethylene, polyethylene terephthalate, polycarbonate, polystyrene, acrylic resin, hard PVC, and the like. The material of these containers 2 and 3 is not limited to synthetic resin, but may be made of a metal material such as stainless steel, one may be made of synthetic resin, and the other may be made of metal.

The inner container 2 is formed in the shape of a box having a bottom with an upper portion as an opening. A flange 2a is formed at the upper end of the inner container 2. The outer container 3 consists of a side wall part 3a which forms a square cylindrical shape, and the bottom plate 3b joined to the lower end of the side wall part 3a. The side wall part 3a is arrange | positioned so that the inner container 2 may be enclosed, and the upper end part of the side wall part 3a and the lower surface of the front end of the flange 2a of the inner container 2 are joined together. Bonding of the upper end of the side wall portion 3a and the lower surface of the front end of the flange 2a of the inner container 2 and the joining of the lower end of the side wall portion 3a and the bottom plate 3b are performed by adhesive, heat welding, ultrasonic welding, or the like. It is carried out by a method selected from among the joining methods. A round hole-shaped opening 3c is formed in the center portion of the bottom plate 3b of the outer container 3. The opening 3c may be configured to be sealed by a sealing plate or a cover.

In addition, a heat radiation preventing metal film may be formed on the outer circumferential surface of the inner container 2 and the inner circumferential surface of the outer container 3. The metal film is formed by a method in which metals or alloys such as copper, silver, aluminum, and chromium are combined with one or two selected from a vacuum deposition method, a chemical plating method and an electroplating method.

The encapsulation body 5 inserted into the gap 4 between the inner container 2 and the outer container 3 has a rectangular bottom portion 5b and a bottom portion 5b of the bottom portion 5b, as shown in the developed view of FIG. It has the side part 5a spoken on four sides. In the lower surface side center part of this bottom part 5b, the gas introduction port 5c extended in the shape of a tube is formed. The encapsulation member 5 is formed of a synthetic resin film, a metal laminate synthetic resin film, or a metal-deposited synthetic resin film. The material of the synthetic resin film is preferably a material having a small gas discharge amount and a small gas permeation amount and high rigidity, for example, selected from polypropylene, polyethylene terephthalate, polyester, polycarbonate, polystyrene, hard PVC, polyamide and the like. The thickness of the synthetic resin film is preferably about 0.05 to 1.0 mm. The metal laminate film is a structure in which metal foil, such as aluminum foil, and the said synthetic resin film were carried out. The metal-deposited synthetic resin film is produced by vacuum-depositing a metal such as aluminum on the synthetic resin film.

The encapsulation member 5 introduces and heats a low thermal conductivity gas made of one of argon, xenon, krypton, or a mixed gas thereof, which is inert and has low thermal conductivity, as described above, from the gas inlet 5c, and seals the four sides ( By raising 5a), it becomes a box shape with a bottom of the size accommodated in the clearance gap between the inner container 2 and the outer container 3. As shown in FIG.

In the edge portion of the gap between the inner container 2 and the outer container 3 that the encapsulation body 5 is not in contact with each other, the foam insulation 7 having flexibility such as soft urethane foam is filled.

An example of the manufacturing method of this heat insulation container 1 is demonstrated using drawing.

The inner container and the outer container 3 made of synthetic resin are respectively molded, and the encapsulation body 5 is prepared. The end of the encapsulation body 5 is fixed to the lower surface of the flange 2a of the inner container 2 in advance. The lower face of the tip end of the flange 2a of the inner container 2 and the upper end of the side wall plate 3a of the outer container 3 are bonded together with an adhesive, for example, an epoxy resin adhesive, and bonded to each other. The foam insulation 7 is filled in the edge portion of the gap 4 of the outer container 3. In the gap 4 between the inner container 2 and the outer container 3, an encapsulant 5 which is not filled with gas is mounted as shown in FIG. 4, and the side wall plate 3a of the outer container 3 is mounted. The bottom plate 3b is bonded to the lower end by an adhesive such as an epoxy resin adhesive. At this time, the gas inlet 5c of the sealing body 5 is taken out from the opening 3c of the bottom plate 3b to the outside. Thereafter, a low thermal conductivity gas composed of one of argon, xenon, and krypton or a mixed gas thereof is filled into the encapsulation body 5 from the gas inlet 5c of the encapsulation body 5, and the gas inlet 5c is filled. Seal by heat seal or adhesion. The sealed gas inlet 5c is put in the opening 3c of the bottom plate 3, and this opening 3c is closed by a sealing plate or a cover.

According to such an insulation container 1, since the encapsulation body 5 (insulation material) filled with a gas having less thermal conductivity than air is disposed in the gap 4 between the inner container 2 and the outer container 3, Compared with the heat insulation container using the heat insulation layer 8 can be formed thin, the volumetric efficiency of the heat insulation container 1 can be improved. That is, compared to the heat insulating container using a heat insulating material such as foam, the thickness of the heat insulating layer 8 can be reduced to half or less with a heat insulating performance equal to or higher than that, and the internal volume can be increased by that amount. In addition, since the heat resistance of the urethane itself is poor, the heat insulation container 1 using urethane foam as a heat insulating material cannot be used in a thermos, such as a hot water bottle, even if a heat resistant synthetic resin material is used in the inner container 2 and the outer container 3. The heat insulation container 1 of this embodiment can be used also as a heat insulation container by manufacturing the inner container 2, the outer container 2, and the sealing body 5 from the synthetic resin with good heat resistance. Moreover, the heat insulation container can be reduced in weight by using the sealing body 5 filled with gas as a heat insulating material.

In addition, since the atmospheric pressure load is not applied to the inner container 2 and the outer container 3 compared to the insulated container having a vacuum insulation layer, it is not necessary to form the insulated container 1 in a pressure-resistant structure, so that the insulating container can be made thin and light. At the same time, it can be formed into various shapes such as a square box shape having a flat wall.

In addition, since the heat insulating material 7 having flexibility is filled between the inner and outer containers and the encapsulation body 5, the heat insulating performance of the edge portion in which the thickness of the encapsulation body 5 is thinned by the heat insulating material 7 is obtained. The heat insulation performance of 1) can be improved.

In addition, according to the manufacturing method of the heat insulating container 1 of the present embodiment, the inner container 2 and the inner container 2 are formed in a state where the encapsulation body 5 is disposed in the gap 4 between the inner container 2 and the outer container 3 in advance. Since the outer container 3 is integrally bonded, the sealing body 5 is then filled with a gas of low thermal conductivity and sealed, so that the sealing body 5 can be mounted in the gap 4 in a depressed state. For this reason, the sealing body 5 can be attached even in a narrow and small gap. In addition, since the heat insulation container 1 can be manufactured by a simple operation of filling and sealing the gas into the encapsulation body 5 compared to the filling operation of the foam or the vacuum sealing operation, the workability of the heat insulation container 1 can be improved. have. Moreover, since the manufacturing work of the heat insulation container 1 becomes simple and a foam and a vacuum apparatus are unnecessary, the manufacturing cost of the heat insulation container 1 can be reduced.

In the heat insulation container 1 of this embodiment, although one encapsulation body 5 was attached to the clearance gap 4 between the inner container 2 and the outer container 3, even if it is set as the structure which laminated many enclosures 5 do. Thus, the structural arc which laminated | stacked many sealing bodies 5 can prevent gas convection and heat radiation in an sealing body, As a result, the heat insulation performance of an sealing body can be improved. When the structure is provided with many sealing bodies, you may be comprised so that gas may be introduce | transduced into each sealing body 5 from the single gas introduction port 5c. In addition, the thickness of the sealing body of each layer is set to 5 mm or less in order to prevent gas convection. Moreover, you may use as the sealing body 5 the heat insulating material which has a multilayer wrinkle for preventing convection on an inner surface of a bag.

Example 2

5 shows an example of the heat insulating material of the present invention, and reference numeral 11 denotes a heat insulating plate.

The heat insulating plate 11 inserts a heat insulating material 15 formed by enclosing a gas 14 having a lower thermal conductivity than air in an encapsulation body 13 made of a gas barrier film between the walls of the structure 12 of the double wall made of synthetic resin. It is composed. In addition, urethane foam 16 is filled in the gap portion between the heat insulating material 15 and the inner surface of the double wall structure 12 in the heat insulating plate 11. Further, the inner surface of the encapsulation body 13 of the heat insulating material 15 has a multi-layered wrinkle for preventing convection. (17) is formed.

The encapsulation member 13 is formed of a synthetic resin film, a metal laminate synthetic resin film, or a metal-deposited synthetic resin film. The material of the synthetic resin film is preferably a material having a low gas discharge amount and a gas permeation amount and a high rigidity, for example, polypropylene, polyethylene terephthalate, polyester, polycarbonate, polystyrene, hard PVC, polyamide or the like. The thickness of the synthetic resin film is preferably about 0.05 to 1.0 mm. The metal laminate film is a structure in which metal foil, such as aluminum foil, and the said synthetic resin film were carried out. In addition, the metal-deposited synthetic resin film is produced by vacuum-depositing a metal such as aluminum on the synthetic resin film.

As gas 14 enclosed in the encapsulation body 13, xenon (κ = 0.52 X) whose thermal conductivity κ is smaller than air (2.41 X 10 ² W · m ⁻¹ · K ⁻¹ ; 0 ° C.) and is an inert gas 10 ² W · m ⁻¹ · K ⁻¹ ; 0 ° C.), krypton (κ = 0.87 × 10 ² W · m ⁻¹ · K ⁻¹ ; 0 ° C.), argon (1.63 × 10 ² W · m ⁻¹ K- ¹ (0 ° C.) and respective gas mixtures thereof are used. These xenon, krypton and argon gas are particularly preferable because they have a low thermal conductivity and do not have a problem on environmental conservation due to their use.

Moreover, the thickness of the heat insulating material 15 is 5 mm or less. If the thickness is larger than 5mm, convection inside the gas 14 is likely to occur, and the heat transfer amount in the thickness direction of the heat insulating material 15 becomes large, so that the heat insulating efficiency is deteriorated, and the effect of improving the volumetric efficiency of the heat insulating material 15 can be sufficiently obtained. There will be no.

In addition, this heat insulating material 15 is not only limited to one, but can also be used by being piled up several sheets, and may be used by overlapping with a conventional urethane foam and expanded polystyrene.

In order to manufacture this heat insulation board 11, the wall materials 12a and 12b made of synthetic resin are first manufactured by a suitable method, such as injection molding, and it is manufactured separately when combining these parts and joining the edge part into the double-wall structure 12. After inserting one heat insulating material 15 or inserting only the encapsulated body 13 into which the gas is not enclosed, and joining and integrating wall materials 12a and 12b, the gas previously formed in the encapsulated body 13 is integrated. It is produced by injecting and sealing a gas such as xenon from the inlet.

The encapsulation body 13 is manufactured by attaching a multi-layered wrinkle 17 to one side of a film made of a synthetic resin, and heat-sealing the periphery of the film with each of the multi-layered wrinkles 17 of the two films facing each other. do.

The heat insulating plate 11 configured as described above can be used as a heat insulator of various heat insulating containers such as a cooler box and a thermal insulation box, and can be used in a heat insulating material used in various buildings such as a general house or a building.

Since the heat insulating plate 11 uses a gas having a small thermal conductivity such as xenon as the encapsulating gas, since the heat insulating performance can be obtained at about half the thickness compared to the urethane foam heat insulating material, the thickness of the heat insulating portion can be reduced. It becomes thin and lightweight.

In addition, the thickness of the heat insulating material is 5 mm or less, and by forming a convection prevention multilayer wrinkle on the film inner surface side of the encapsulation material, gas convection is prevented in the encapsulation material, so that the insulation performance can be improved.

In addition, in this embodiment, although the heat insulating material 15 was inserted in the double wall structure 12 made from synthetic resin, and the panel shaped heat insulation board 11 was comprised, it is not limited only to this, It is not limited to this, The double wall structure of multiple shapes or multiple stars Applicable to structures. In addition, as the encapsulation member 13 or the heat insulating plate 11 can be laminated in two or more layers, the thickness can be increased, but the heat insulating performance can be remarkably improved.

Claims (18)

In the heat insulation container formed by forming the heat insulation layer 8 between the inner and outer container of the double wall container by which the inner container 2 and the outer container 3 were integrally joined, the inside container 2 and the outer container 3 An insulating container comprising a heat insulating material formed by enclosing at least one low thermal conductive gas of xenon, krypton, or argon into an encapsulation body (5, 13) made of a film having a gas barrier property in a gap. The heat insulating container according to claim 1, wherein the encapsulation member (5, 13) is made of a material selected from a synthetic resin film, a metal laminate synthetic resin film, and a metal-deposited synthetic resin film. 3. The heat insulation container according to claim 2, wherein a multi-layered wrinkle for preventing gas convection is formed on an inner surface of the encapsulation body. The heat insulating container according to claim 1, wherein the heat insulating material has a thickness of 5 mm or less. The heat insulating container according to claim 1, wherein a plurality of heat insulating materials are stacked and disposed. 2. The heat insulating container according to claim 1, wherein a flexible foam insulating material (7) is filled between the inner and outer containers of the double wall container and the gap between the heat insulating materials. A heat insulating material characterized by encapsulating at least one low thermally conductive gas of xenon, krypton, or argon in an encapsulation body (5, 13) made of a film having a gas barrier property. 8. The heat insulating material according to claim 7, wherein the encapsulation member (5, 13) is made of a material selected from a synthetic resin film, a metal laminate synthetic resin film, and a metal-deposited synthetic resin film. The insulating material according to claim 8, wherein a multi-layered wrinkle (17) for preventing gas convection is formed on an inner surface of the encapsulation member (5, 13). 8. The heat insulating material according to claim 7, wherein a plurality of encapsulation bodies (5, 13) are laminated, and low thermal conductivity gas is enclosed in each encapsulation member, and the thickness of each layer is 5 mm or less. The method according to claim 7, wherein the encapsulation member 13 is disposed between the walls of the double wall structure 12, and the flexible foam insulation material 16 is disposed between the double wall structure 12 and the encapsulation body 13. Insulation material, characterized in that. As a manufacturing method of a heat insulation container formed by forming a heat insulation layer between the inner and outer containers of the double-walled container in which the inner container 2 and the outer container 3 are integrally bonded, the gap between the inner container 2 and the outer container 3 in advance. The inner container 2 and the outer container 3 are integrally bonded together with the encapsulation bodies 5 and 13 made of a film having a gas barrier property in (4), and the encapsulation bodies 5 and 13 are then joined. A method of manufacturing a heat insulating container, characterized in that to fill at least one low thermal conductive gas of xenon, krypton, argon and sealing the encapsulation (5, 13) to form a heat insulating layer. The method of manufacturing a heat insulation container according to claim 12, wherein the encapsulation member (5, 13) is made of a material selected from a synthetic resin film, a metal laminate synthetic resin film, and a metal-deposited synthetic resin film. The method of manufacturing a heat insulation container according to claim 13, wherein a multi-layered wrinkle (17) for preventing gas convection is formed on an inner surface of the encapsulation member (5, 13). The method for manufacturing a heat insulation container according to claim 12, wherein the heat insulation layer (15) has a thickness of 5 mm or less. 13. A plurality of gas encapsulation rods according to claim 12, wherein a plurality of encapsulation bodies 5 and 13 are laminated in a gap between the inner and outer containers, and low thermal conductive gases are enclosed in the encapsulation bodies 5 and 13, respectively. A method of manufacturing a heat insulation container, characterized in that the lamination is laminated. The tubular gas inlet 5c is formed in the sealing bodies 5 and 13, and the opening 3c which leads the said gas inlet 5c in the double wall container is formed, The said When the sealing bodies 5 and 13 are disposed in the gap between the inner and outer containers of the double wall container, the gas inlet 5c is led out from the opening 3c of the double wall container, and this gas inlet 5c is provided. And a gas inlet (5c) is enclosed in the encapsulation body (5, 13) arranged in the double wall container. 18. The method of manufacturing a heat insulation container according to Claim 17, wherein the sealed gas inlet (5c) is inserted into the opening (3c) and the opening (3c) is closed.