JP2002058604A - Hot and cold insulation container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an excellent hot and cold insulation container with hot and cold insulation performance as a vacuum bottle and light weight as a PET bottle. SOLUTION: This hot and cold insulation container is constituted of an insulation material made by sealing and decompressing at least a kind of core material selected from a fiber structure and foam resin and particle resin in a gas barrier film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating / cooling container excellent in heat insulating property, heat insulating property and light weight.

[0002]

2. Description of the Related Art Conventionally, a thermos is known as a portable container for keeping drinks such as tea, juice, coffee and the like warm and cool. For thermos, fill the hollow part of the double container with 10-5 Torr.
(1.33.times.10@-3 Pa) and a structure in which plating is applied to the outside of the inner bottle. By providing a vacuum, heat conduction and convection are cut off, and radiant heat is cut off by plating, thereby providing excellent heat insulation. However, in order to maintain a high vacuum, the material of the container is limited to glass, stainless steel, titanium or the like, and there is a problem that a heavy, empty container is bulky and obstructive.

[0003] On the other hand, as a material using a lightweight material, there is a heat insulating / cooling container in which a plastic double container is filled with a heat insulating material such as urethane foam, and a container having a small thickness is not effective. And a thickness of 5 cm or more is required to obtain high heat insulation similar to that of a thermos bottle, and at present, there is nothing that has both compactness and high heat insulation.

[0004] In recent years, demand for plastic bottled beverages has been increasing as a soft drink. PET bottle beverages are very lightweight and can be lidded, so they are often used in place of water bottles. However, there is no cooling effect. For this reason, cold insulation covers made of a cloth containing a batting or a nonwoven fabric laminated with an aluminum vapor-deposited film have been sold. These covers have a short-term cooling effect of about one hour, but do not have a long-term effect, and have little effect when going out for a long time such as excursions and picnics.

[0005]

SUMMARY OF THE INVENTION In view of the background of the prior art, it is an object of the present invention to provide a heat insulating and cooling container having both the heat retaining property of a thermos bottle and the light retaining property of a PET bottle beverage. .

[0006]

The present invention employs the following means in order to solve the above problems. That is, the heat insulation / cooling container of the present invention is characterized by being constituted by a heat insulating material obtained by sealing at least one kind of core material selected from a fibrous structure, a resin foam and a granular material with a gas barrier film under reduced pressure. It is assumed that.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the present inventors have conducted intensive studies on the above-mentioned objects, that is, a heat-insulating and cooling container having both heat-insulating properties, heat-insulating properties and light-weight properties, and enclose a specific core material under reduced pressure with a gas barrier film. However, they have sought to solve these problems at once.

In the present invention, at least one selected from the group consisting of a fiber structure, a resin foam and a granular material is used as a core material, and these are further sealed under reduced pressure to obtain a heat insulating material. Insulation equivalent to that of a thermos can be obtained at very low vacuum.

That is, by limiting the degree of freedom of gas molecules by the degree of vacuum and the space partitioned by at least one kind of core material selected from a fibrous structure, a resin foam and a granular material, such excellent heat insulation is achieved. Sexuality can be achieved. Normally, air has the lowest thermal conductivity among familiar materials. Among them, heat transfer occurs due to collision of gas molecules. Therefore, if the pressure is reduced so as not to cause such collision, a high heat insulating property can be obtained. The average value of the distribution of the distance that gas molecules travel until they collide with other molecules is called the mean free path. As the pressure decreases, the mean free path increases. The mean free path of air is 760 Torr (10 ⁴ P
In a), 10 ^-4 mm and 10 ^-2 Torr (1.33 Pa)
7.3 mm, 10 ^-4 Torr (1.33 × 10 ^-2 P
In a), it is 7.3 × 10 ² mm. When the mean free path of the gas molecules becomes larger than the distance between the walls of the thermos when the pressure becomes low, the collision between the molecules disappears, and the apparent thermal conductivity of the gas drops sharply. Is a high vacuum of 10 ⁻⁵ Torr (1.33 × 10 ⁻³ Pa).

Conversely, the same effect can be obtained even if the space in which the gas molecules fly is reduced, and if the fiber structure, resin foam, granular material, etc. are packed in the space, a high degree of heat insulation can be obtained even in a low vacuum. can get. In the present invention, since the decompression space is constituted by the gas barrier film, such means is preferably used also in order to reduce the risk of durability.

The gas barrier film referred to in the present invention is not particularly limited as long as it is a material that does not allow air, water vapor, and other gases to penetrate into the heat insulator from the outside. However, metal foil such as aluminum foil, ethylene vinyl alcohol, etc. Copolymer (EVO
H), thermoplastic films such as polyvinylidene chloride (PVDC), polyvinyl alcohol (PVA), meta-xylylenediamine / adipic acid (MXD-6), polypropylene (PP), polyester (PET), and nylon (NY); And a polyvinylidene chloride coated film.

Further, the gas barrier film of the present invention comprises:
A film obtained by forming a thin film layer of a ceramic such as silica or alumina by vacuum evaporation or sputtering may be used. Examples of such ceramics include metal oxides such as indium tin oxide (ITO), tin, titanium, zinc, zirconium, barium, and chromium, in addition to the above.
Silicon nitride, silicon carbide, or the like can be used.

In order to enhance the barrier properties of such a gas barrier film, it is preferable to form a laminated structure, and more preferably a film having at least one inorganic layer selected from metals and ceramics on at least one layer thereof. Still more preferably, a material having a metal foil of 7 to 12 microns is good.

In order to enhance the heat insulating property of the gas barrier film, at least one layer of the laminated structure is provided with J
A material having a thermal conductivity of 0.1 W / (m · K) or less measured based on IS A-1412, for example, a foamed material such as foamed polyethylene or foamed urethane, or a fiber woven or knitted fabric is used by lamination. Is preferred. In order to further improve the durability of such a gas barrier film,
Preferably, a knitted or woven fabric made of a strong fiber such as nylon, polyester, or aramid is used in combination.

The method of sealing the gas barrier film under reduced pressure is not particularly limited as long as the degree of reduced pressure inside can be maintained, but a method of sealing the gas barrier film by heat sealing is preferably used. Is done. Therefore, it is preferable to use a thermoplastic synthetic resin film on at least one side of the laminated structure of the film. Examples of such a thermoplastic synthetic resin film include unstretched polypropylene (CPP) and high-density polyethylene (HDP).
E) Thermoplastic synthetic resin films such as low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene vinyl acetate copolymer (EVA), polyester (PET), and ionomer (ION) can be used. .

When a fiber structure is used as the core material, the fiber structure is at least one selected from the group consisting of web, felt, non-woven fabric and woven or knitted fabric, and is used for lightness and moldability in a container. Is preferable, and as a fiber structure, 0.008 to 0.5 g after decompression.
/ Cm ³ is preferred. If the bulk density is too large, when the pressure is reduced, the heat conduction through the skeleton (fibrous structure) forming the space becomes larger than the heat conduction of gas molecules in the reduced pressure space, and conversely, if the bulk density is too small. In addition, the gaps between the films are crushed, and there is a tendency that the reduced pressure space cannot be sufficiently maintained.

Further, it is preferable to use a fibrous structure containing a hollow fiber or a modified cross-section yarn. Such a hollow fiber means that at least a part of the yarn cross section is hollow,
In the case of natural fibers, fibers such as cotton, hemp, and silk can be preferably used. In the case of synthetic fibers, fibers having a cross-sectional shape such as an O-shaped cross-section yarn, a modified cross-section yarn, and a rice-shaped cross-section yarn are preferably used. .

Since such hollow fibers already retain the internal space, the decompression space is easily divided, and since the bending and torsional synthesis rate is higher than that of ordinary yarn of the same thickness, the decompression space is reduced. Is maintained and held.

The modified cross-section yarn is a synthetic fiber produced by a melt spinning method and having a non-circular spinneret and spun. For example, the cross section of the yarn is T-type, Y-type, three-leaf type, four-leaf type, or five-leaf type. The cross-section of the fibers means that by deforming, the tightness and contact between the yarns is reduced, the space is easily divided, and the rigidity is improved, so that the space can be stably maintained and held. .

There are no particular restrictions on the material of the fibrous structure, but fibers made of synthetic resin, glass, ceramics and the like are preferably used.

The core material of the present invention may be a resin foam, but those having an open-cell structure are more preferably used than those having a closed-cell structure. This is because at the time of pressure reduction, the open-cell structure has a function of reaching the target pressure reduction value earlier.

Further, a granular material may be used for the core material of the present invention, and such a granular material may be JIS-A14.
12 is 0.05 W / (m
K) The following materials are desirable, and among them, for example, at least one selected from perlite, diatomaceous earth, glass balloon, shirasu balloon, calcium silicate and silica airgel is preferably used.

The thickness of the heat insulating material of the present invention thus obtained is desirably 1 to 10 mm from the viewpoint of increasing the effective volume ratio (the ratio of the inner volume to the outer appearance size of the container).

Further, the heat insulating material is preferably J
When the flexural strength measured based on IS-A9514 is 15
When the pressure is equal to or lower than Pa, the container can be bent, and the container can be bent by the amount of the drink therein to reduce the bulk. Normally, when the pressure is reduced, the outer container is pushed from the atmosphere and becomes stiff. However, according to the configuration of the present invention, a flexible film is used for the outer container, and a relatively low vacuum of 2 Torr is used.
r (266 Pa) to 0.01 Torr (1.33 Pa)
The fiber structure, resin foam,
If the granular material is sealed so that the thickness after decompression becomes 1 to 10 mm, a container having both heat insulating properties and bendability can be obtained.

With respect to the container shape of the heat insulating and cooling container of the present invention, cylindrical, tetra-pack, bag, standing pouch, bottle, brick, back-in-box, cable top, and composite cans (flat-wound, Spiral type), Lami tube type, envelope type, pillow type, gusset type, etc., are not particularly limited.

As an example of a method for forming such a container, a bag is sealed on three sides with a gas barrier film, a core material is placed in the bag, and the other side is heat-fused while reducing the pressure, thereby forming a plate. May be formed and wound around the side of another inner container to form a heat-insulated and cooled container. Alternatively, a plurality of small pieces of heat insulating material may be made and attached to the side surface of another inner container to form a heat insulating and cooling container.

Also, a hollow molded container is made by using a thermoplastic resin such as polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyethylene terephthalate, etc., by a method such as hollow blow molding, injection (injection) molding, or injection blow molding. The core material may be filled between the two layers, and the mouth portion may be heat-sealed while reducing the pressure to form a heat insulating material.

The heat insulating material of the present invention in which the core material is sealed under reduced pressure may be used for any part of the container, or may be used in combination with another heat insulating material made of a foam or a fibrous material. However, when the container occupies a large area on the side surface in a cylindrical shape or the like like a commercially available PET bottle, it is preferable to use at least the container on the side surface. This is because the amount of heat passing through the side surface is extremely large with respect to the container mouth portion and the lower bottom portion, and if the amount of heat moving is large, the heat insulation effect is reduced. When the heat insulating material is used for the side surface, it is desirable that a portion connecting the front surface and the rear surface of the heat insulating material is as small as possible to further enhance the heat insulating effect. This is because the thermal conductivity of a vacuum insulation material is extremely low because the inside is vacuum, and when a temperature difference occurs between the front and back surfaces, heat moves through the film connecting the front and back surfaces (heat bridge, heat bridge). Bridge).

Conversely, a certain degree of heat insulation is necessary, but when portability is important, a plurality of vacuum heat insulating materials are connected,
The connecting portion may be movable. When the connecting portion is movable, the container can be folded at the connecting portion. For example, the volume of the container can be reduced by the amount of the drink that has been drunk, or when the container is empty, the container can be folded and compactly carried. In such a configuration, when a pinhole is generated in the gas barrier film due to contact or rubbing during use, and the danger of a reduced vacuum degree is assumed, in a configuration using one piece of vacuum heat insulating material over the entire surface at once. Although the heat insulating property is lost, in a configuration in which a plurality of vacuum heat insulating materials are connected and used, there is a merit that the vacuum is broken only in that portion and the device can be used to some extent.

The container for keeping warm and cool according to the present invention can be used for directly placing a beverage in a container if a film is stuck so as not to leak the liquid inside, or if the container is stuck to an inner container which does not leak liquid. Although it is not a matter of course, it can be preferably used as a cold insulation cover when carrying tea or coffee in a commercially available PET bottle beverage or empty PET bottle container.

The present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view showing an example of a heat insulating material constituting a heat insulating and cooling container of the present invention, wherein 1 is a gas barrier film, 2 is a core material, and 3 is a heat-sealed portion.

FIG. 2 is a cross-sectional view showing an example of the gas barrier film of the present invention, wherein 4 is a PET film and 5 is Al.
Foil 6 is a CPP film and each film is laminated by dry lamination. Here, the PET film 4 is used for surface protection, the Al foil (aluminum foil) 5 is used for gas barrier properties, and the CPP film 6 is used for heat fusion properties.

FIG. 3 shows an example of the heat insulating / cooling container of the present invention. The heat insulating material shown in FIG. 1 is formed into a cylindrical shape by bonding the seal portions on both sides, and the upper and lower bottom portions of the cylinder are formed. Is molded using a foamed polyolefin obtained by cutting into a lid, 7 is a heat insulating material, and 8 is a foamed polyolefin. This can also be used as an outer container (cover) of a commercially available plastic bottle drink.

FIG. 4 shows a case in which the PET container is integrated with the heat and cool container of FIG. 3 as an outer container, and 9 is the PET container.

FIG. 5 shows an example of a flexible water bottle in which a cap-equipped spout is provided in a film bag serving as an inner container. 10 is a cap, 11 is a spout, and 1 is a spout.
2 is a nylon bag.

FIG. 6 shows an example of an envelope-type heat insulating / cooling container in which the heat insulating / cooling container of the present invention is integrated with the flexible container of FIG. Since both the nylon bag 12 and the heat insulating material 7 are bendable, they can be carried in a reduced volume by the reduced amount of the drink therein.

[0038]

The present invention will be described in more detail with reference to the following examples. [Method for Evaluating Heat Insulation / Cooling Insulation] <Cooling Insulation> 500 ml of 5 ° C. cold water was placed in the containers of Examples and Comparative Examples, and allowed to stand still at 20 ° C. atmosphere, and the temperature rise of the water every hour was measured. . The evaluation was evaluated based on the following criteria.

[0039] <Heat Insulation> 500 ml of 95 ° C. hot water was placed in the containers of Examples and Comparative Examples, and allowed to stand still at 20 ° C., and the temperature drop was measured every hour. The evaluation was evaluated based on the following criteria.

[0040] [Method of Manufacturing Container] A method of manufacturing the heat insulating and cooling container according to the present invention will be described.

<Gas barrier film> 9 μm thick PE
T film (biaxially stretched polyester film), thickness 1
A 2 μm Al foil (aluminum foil) and a 70 μm thick CPP film (unstretched polypropylene film) were bonded together by dry lamination to obtain a gas barrier film having the structure shown in FIG. The gas barrier film having this film configuration was referred to as Configuration 1.

A gas barrier film having a structure in which an ONY film (biaxially stretched nylon film) having a thickness of 15 μm was inserted between the Al foil and the CPP film of the structure 1 was formed as a structure 2. This ONY film is excellent in piercing resistance.
The durability is further improved.

Further, a gas barrier film having a film structure in which a PET film having a thickness of 12 μm, an ONY film having a thickness of 15 μm, an Al foil having a thickness of 17 μm, and a CPP film having a thickness of 60 μm were each laminated was referred to as Structure 3.

Further, an ONY film having a thickness of 15 μ, a PVDC film (polyvinylidene chloride) having a thickness of 15 μ,
A film configuration having no metal layer in which an ONY film having a thickness of 15 μm and a CPP film having a thickness of 60 μm were laminated was designated as Configuration 4.

Further, OPP (biaxially oriented polypropylene film) 20 μ, PE (polyethylene) 12 μ, Al
-PET (Al evaporated polyester film) 9μ, PE
A gas barrier film having a film configuration having a metal deposition layer in which 12 μ and CPP 70 μ were laminated was designated as Configuration 5.

Table 1 shows the gas barrier films having the above-mentioned structures 1 to 5.

[0047]

[Table 1]

Example 1 A polyester long-fiber nonwoven fabric (bulk density 0.01 g / cm ³ , basis weight 1200) was placed in a bag (length 30 cm × width 32 cm) made by heat-sealing the gas barrier film of constitution 1.
g / m ² , thickness 20 mm, length 22 cm × width 30 cm) as a core material, and a degree of vacuum of 0.01 Torr (1.33)
While reducing the pressure to Pa), the opening of the gas barrier film was heat-sealed and closed to obtain a heat insulating material. FIG. 1 shows a cross-sectional view of this heat insulating material.

The outer container shown in FIG. 3 was obtained using this heat insulating material. That is, a foamed polyolefin ("Toray Peff" manufactured by Toray Industries, Inc., having an outer diameter of 9 cm, a thickness of 9 mm) was formed by bonding the seal portions on both sides of the heat insulating material to form a cylindrical shape, and cutting the upper and lower portions of the cylinder in a circular shape. 1 cm, thermal conductivity 0.30 W /
m · K) were molded as lids to form outer containers. Blow-molded polyethylene terephthalate container (PET bottle)
And put it inside, glue it to the outer container,
As a result, a heat- and cold-insulated container of Example 1 as shown in FIG. 4 was obtained. The thickness of the heat-retaining cool container was 4 mm, the weight was 131 g, and weighed about half of the stainless steel thermos. Comparative Example 1 A heat insulating material was obtained in the same manner as in Example 1 except that the heat insulating material of Example 1 was heat-sealed at normal pressure without reducing the pressure. In the same manner as in the above, a heat insulating / cooling container of Comparative Example 1 was obtained. The thickness of this insulated container is 10m
m and weight were 131 g. Example 2 A non-woven polyester long-fiber nonwoven fabric used as a core material of Example 1 was configured in the same manner as in Example 1 except that the basis weight was reduced to 600 g / m ² to obtain a heat-insulated and cooled container of Example 2. . The thickness of the heat-insulated and cooled container was 2 mm, and the weight was 95 g. Comparative Example 2 A heat insulating material was obtained in the same manner as in Example 2 except that the heat insulating material of Example 2 was heat-sealed at normal pressure without reducing the pressure. In the same manner as in the above, a heat insulating / cooling container of Comparative Example 2 was obtained. The thickness of this heat and cold storage container is 4 mm,
The weight was 95 g. Example 3 Except that the polyester long-fiber nonwoven fabric used as the core material of Example 1 was changed to a quarter weight of 300 g / m ² , the same configuration as in Example 1 was adopted, and the heat-insulated and cooled container of Example 3 was used. I got The thickness of the heat-insulated and cooled container was 1.5 mm, and the weight was 77 g. Comparative Example 3 A heat insulating material was obtained in the same manner as in Example 3 except that the heat insulating material of Example 3 was heat-sealed at normal pressure without reducing the pressure. In the same manner as in the above, a heat insulating / cooling container of Comparative Example 3 was obtained. The thickness of this heat and cold storage container is 2 mm,
The weight was 77 g. Examples 4 to 7 In the same manner as in Example 1 except that the gas barrier films of Example 1 were replaced with the laminated films of Structures 2 to 5 in Table 1, heat- and cold-insulated containers of Examples 4 to 7 were obtained. The thickness of each of the heat insulating and cooling containers of Examples 4 to 7 was 4 mm, and the weight was 131 g. Example 8 The degree of vacuum when forming the heat insulating material of Example 1 was set to 0.01 To.
Instead of rr (1.33 Pa), 0.02 Torr
Except for performing heat fusion at a degree of vacuum of r (2.66 Pa), a heat- and cold-insulated container of Example 8 was obtained in the same manner as in Example 1. The thickness of the heat and cold storage container of Example 8 was 4 mm, and the weight was 131.
g. Example 9 In Example 8, the degree of vacuum when forming the heat insulating material was 2T.
A heat- and cold-insulated container of Example 9 was obtained in the same manner as in Example 8, except that heat fusion was performed at a degree of vacuum of orr (2.66 × 10 2 Pa). This container had a thickness of 4 mm and a weight of 131 g. Example 10 A heat insulating material (20) made in the same manner as in Example 2 was placed on the side of a water bottle with a mouth made of a nylon film bag as shown in FIG. (2.5 cm × 28 cm) and wound into a unit to obtain a heat-insulated and cooled container of Example 10 shown in FIG. Table 2 shows the configurations of Examples 1 to 10 and Comparative Examples 1 to 3 in which the thickness of the container was 2 mm and the weight was 111 g.

[0050]

[Table 2]

Next, Examples 1 to 10 and Comparative Examples 1 to 3
The container was tested for heat retention and cooling, and the results of the cooling were shown in Table 3,
Table 4 shows the results of the heat retention.

[0052]

[Table 3]

[0053]

[Table 4]

As apparent from Table 2, Examples 1 to 1
It can be seen that the case of 0 is lighter and more compact than those of Comparative Examples 1 to 3.

As is clear from Table 3, Example 1
As compared with those of Comparative Examples 1 to 3, the temperature of about 10 ° C., at which humans feel cold and delicious, is maintained for about 3 to 4 hours, and has a sufficient cold-holding property. You can see that. Moreover, as is clear from Table 4, the temperature of about 60 ° C. in which the humans feel that the drink is warm and delicious is about 4 in Examples 1 to 10 compared to Comparative Examples 1 to 3. It has been found that it has been kept for up to 5 hours and has sufficient heat retention.

In particular, in the case of the tenth embodiment, in addition to maintaining excellent heat insulating properties, the container as a whole has a bendable property, and can be compactly carried by being bent by the reduced volume of the beverage in the container. It was an advantage.

[0057]

According to the present invention, it is possible to reliably and stably provide a lightweight, compact and excellent portable heat-retaining and cooling container. Specifically, in addition to water bottle applications, it can also be suitably used as a cold storage cover for PET bottle beverages, a warm and cold storage cover for canned beverages, a heat insulating sheet for constant temperature transport, a cooler box, and the like.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing one example of a heat insulating material of the present invention.

FIG. 2 is a schematic sectional view showing an example of the gas barrier film of the present invention.

FIG. 3 is a perspective view showing an example of the heat insulating / cooling container of the present invention.

FIG. 4 is a perspective view showing an example of the heat insulating / cooling container of the present invention.

FIG. 5 is a perspective view showing an example of a flexible container for beverages.

FIG. 6 is a perspective view showing an example of a heat insulating and cooling container in which a heat insulating material according to the present invention is integrated as a cooling cover with a flexible container for beverages.

[Explanation of symbols]

 1: gas barrier film 2: core material 3: heat-sealed portion 4: PET film 5: Al foil 6: CPP film 7: heat insulating material 8: foamed polyolefin 9: PET inner container 10: cap 11: spout 12: Nylon bag 13: Flexible container

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3E067 AA11 AC01 BA17A BB25A BC03A CA04 CA18 GA14 4B002 AA03 BA21 CA34 4F100 AA01B AA03A AB01B AC02A AC10A AD00B AG00B AK01A AK01B AK07 AK42 AK46 BA02 DA01B01 DG46 EH66B EJ24B EJ38 GB16 JA13B JB16B JD02B JJ01A JJ01B JJ02 JK04 JK07A JL03 JM02B YY00A YY00B

Claims (19)

[Claims] 1. A heat insulating and cold insulating material characterized by comprising at least one kind of core material selected from a fibrous structure, a resin foam and a granular material, which is sealed under reduced pressure with a gas barrier film. Container. 2. The container according to claim 1, wherein said gas barrier film is a laminated structure. 3. The laminated structure according to claim 1, wherein at least one of the
3. The container according to claim 2, wherein the container has at least one inorganic layer selected from metals and ceramics. 4. The container according to claim 3, wherein said inorganic layer is a thin film formed by a vacuum deposition method, a sputtering method or an ion plating method. 5. The laminated structure according to claim 1, wherein at least one of the
The container according to any one of claims 2 to 4, wherein the container has a layer made of a material having a thermal conductivity of 0.1 W / (m · K) or less measured according to JIS-A1412. 6. The laminated structure according to claim 1, wherein at least one of the
The foldable heat insulating / cooling container according to any one of claims 2 to 5, which has a knitted fabric. 7. The laminated structure according to claim 1, wherein at least one surface thereof has
The container for keeping warm and cool according to any one of claims 2 to 6, which has a thermoplastic synthetic resin film. 8. The container according to claim 1, wherein the fibrous structure is at least one selected from the group consisting of web, felt, nonwoven fabric and knitted fabric. 9. The fibrous structure has a bulk density of 0.008 to 0.008.
0.5 g / cm ³ and thermal insulation cold container according to claim 1 is. 10. The container according to claim 1, wherein said fibrous structure contains at least one selected from hollow fibers and modified cross-section yarns. 11. The container according to claim 1, wherein said fibrous structure is made of at least one kind selected from a synthetic resin, glass and ceramics. 12. The container according to claim 1, wherein said resin foam is a synthetic resin foam having an open cell structure. 13. The method according to claim 1, wherein said synthetic resin is an elastic resin.
2. The container for keeping warm and cool according to 2. 14. The granular material has a thermal conductivity measured according to JIS A-1412 of 0.05 W / (m · K).
The heat insulation / cooling container according to any one of claims 1 to 13, wherein: 15. The container according to claim 14, wherein said granular material is at least one selected from pearlite, diatomaceous earth, glass balloon, shirasu balloon, calcium silicate and silica airgel. 16. The heat insulating and cooling container according to claim 1, wherein said heat insulating material has a thickness of 1 to 10 mm. 17. The heat insulating and cooling container according to claim 1, wherein the heat insulating material has a flexural strength of 15 Pa or less as measured according to JIS A-9514. 18. The heat insulating / cooling container according to claim 1, wherein said heat insulating material is used at least on a side surface of the container. 19. The heat insulating and cooling container according to claim 1, wherein said heat insulating and cooling container covers a PET bottle.