JP2022018970A - Cold insulant storage bag and cold sense clothes comprising the same - Google Patents

Abstract

To provide a cold insulant storage bag in which heat transfer on an opposite side of a cooled object is suppressed more significantly compared with a cooled object side to maintain a cold insulation effect for a long time and its thickness is relatively reduced, and cold sense clothes comprising it.SOLUTION: A storage bag for putting in a cold insulant includes: a bag part constituted by a laminate material of a heat insulation layer and a metal thin film; and a heat insulation material stored in the bag part. In the cold insulant storage bag, the heat insulation material is arranged only on one of one surface side and the other surface side of the bag part.SELECTED DRAWING: Figure 3

Description

The present invention relates to a cold insulation material storage bag and cold clothing including the same.

As shown in Patent Document 1, a sheet-like material having a sheet made of foamed synthetic resin, an aluminum foil laminated on the sheet, and a transparent synthetic resin layer laminated on the aluminum foil. It is described that it constitutes a bag. This bag is said to be used as a portable bag for storing frozen desserts and fish.

Further, Patent Document 2 describes a bag-shaped cold insulation packaging material composed of an outer surface layer and an inner surface layer. The outer surface layer and the inner surface layer have a structure in which an aluminum vapor deposition layer and a foamed resin layer are laminated, respectively. The outer surface layer and the inner surface layer are laminated so that the foamed resin is arranged on the inside and the aluminum vapor-deposited layer is arranged on the outside.

Further, Patent Document 3 describes that dry ice is stored between two heat insulating sheets to form a bag. This bag is attached to the lid of the cooler box. It is said that an adjustment cover can be attached to the above bag by using a hook-and-loop fastener.

Jitsukaisho 49-61162 JP-A-2019-172364 Utility model registration No. 3016676

In the bags of Patent Documents 1 to 3, the amount of heat transfer on the front surface and the back surface of the bag arranged in an environment where the temperature tends to rise is smaller than the amount of heat transfer on the other surface, and the bag is stored in the bag. It prevents the frozen cold insulating material from liquefying in a short time and losing the cooling effect, and does not cool the object to be cooled arranged on the other surface of the bag.

For example, when cooling an object to be cooled by a cold insulating material in an environment in which sunlight or lighting is directly or indirectly radiated to either one side or the other side of the storage bag of the cold insulating material. There is a problem that the frozen cooling material melts from the side exposed to sunlight and the cooling effect is lost in a short time. In addition, when the cooling material is applied to the cooling target in an environment where the outside temperature is high to cool the cooling target, the frozen cold insulating material melts from the opposite side of the cooling target, and the cooling effect is lost in a short time. There is a problem that it will end up. In this way, when the cold insulation material storage bag is used in an environment where the temperature of either one of the cold insulation material storage bag and the other surface tends to rise, the cold insulation effect is likely to be lost in a short time. ..

The present invention is a cooling material storage bag having a relatively small thickness, which suppresses heat transfer on the opposite side of the cooling object more than the cooling object side, maintains the cooling effect for a long time, and has a relatively small thickness. The purpose is to provide a cooling sensation garment equipped with it.

It is a storage bag for storing a cold insulating material, and has a bag portion composed of a laminated material of a heat insulating layer and a metal thin film, and a heat insulating material stored inside the bag portion, and is one of the bag portions. The above-mentioned problem is solved by the cold insulation material storage bag in which the heat insulating material is arranged only on one of the surface side and the other surface side. According to this cold insulation material storage bag, if the heat insulating material is used so as to be located on the opposite side of the object to be cooled, for example, the cold insulation material storage bag is directly or indirectly irradiated with sunlight. Therefore, when the temperature on the opposite side of the object to be cooled tends to rise, it is possible to prevent the cold insulating material from melting in a short time and losing the cooling effect in a short time. In other words, according to the above-mentioned cold insulation material storage bag, it is possible to maintain the cold insulation effect for a long time. Since the heat insulating material is arranged only on one of the one side and the other side of the bag, it is compared with the case where it is arranged on both one side and the other side of the bag. , It is possible to keep the thickness of the cold insulation material storage bag small.

Further, the above-mentioned problem is solved by the cold-feeling clothes in which the above-mentioned cold insulation material storage bag is detachably configured.

In the above-mentioned cold insulation material storage bag or the above-mentioned cooling garment, a cold insulation material stored inside the bag portion is further provided, and another heat insulating material other than the heat insulating material is provided between the cold insulation material and the bag portion. It is preferable to have a configuration in which is not arranged. If the surface on which the heat insulating material is not placed is on the cooling target side and the surface on which the heat insulating material is placed is on the opposite side of the cooling target, the cold insulating material can be prevented from melting in a short time. It becomes possible to efficiently cool the object to be cooled.

In the above-mentioned cooling material storage bag or the above-mentioned cooling garment, the heat insulating layer has a structure in which a first heat insulating material composed of a heat insulating layer and a metal thin film and a second heat insulating material having a heat insulating material are overlapped. Is preferable. In this way, air can be contained between the first heat insulating material and the second heat insulating material to further enhance the effect of suppressing heat transfer on the surface opposite to the object to be cooled.

In the above-mentioned cooling material storage bag or the above-mentioned cooling garment, it is preferable that the first heat insulating material is arranged outside the bag portion and the second heat insulating material is arranged inside the bag portion. .. With such a configuration, the effect of suppressing heat transfer on the surface opposite to the object to be cooled can be further enhanced.

In the above-mentioned cooling material storage bag or the above-mentioned cooling garment, the heat insulating layer constituting the inner surface of the bag portion is preferably a bubble wrap material. The bubble wrap is configured as a smooth surface on which the plastic film is exposed. When the heat insulating material is inserted into the bag portion, the heat insulating material slips well, and the heat insulating material can be smoothly stored in the bag portion.

In the above-mentioned cooling material storage bag or the above-mentioned cooling garment, it is preferable that a protective bag made of a plastic film is further provided, and the bag portion has a shape covered with the protective bag. This makes it possible to protect the metal thin film of the bag portion with the plastic film and prevent the metal thin film from being damaged.

In the above-mentioned cooling garment, it is preferable that the cooling material storage bag is detachably fixed to the cooling garment so that the heat insulating material of the cooling material storage bag is arranged on the opposite side of the wearer's skin. As a result, the cold insulation effect of the cold insulating material can be maintained for a long time, and the body of the wearer of the clothes can be efficiently cooled.

According to the present invention, the heat transfer on the opposite side of the object to be cooled is further suppressed as compared with the side of the object to be cooled, the cooling effect is maintained for a long time, and the cooling material is stored in a relatively small thickness. A bag and a cooling garment with it can be provided.

It is a front view of the cold insulation material storage bag which concerns on 1st Embodiment. It is a rear view of the cold insulation material storage bag shown in FIG. It is sectional drawing in the AA part of FIG. It is sectional drawing which enlarged the part B of the figure. It is sectional drawing which shows the structure of the bubble wrap material. It is an enlarged sectional view of the cold insulation material storage bag which concerns on 2nd Embodiment, and is the enlarged part corresponding to the part B of FIG. It is sectional drawing of the cold insulation material storage bag which concerns on 3rd Embodiment. It is sectional drawing of the cold insulation material storage bag which concerns on Comparative Example 2. FIG. It is sectional drawing which shows the carrying-out method of the evaluation test. It is a front view of a vest which is an example of a feeling of cold clothes. It is a graph which shows the cold insulation effect of each cold insulation material storage bag or cold insulation material of Comparative Example 1, Comparative Example 2, and Example 2. It is a graph which shows the cold insulation effect of each cold insulation material storage bag of Example 1 and Example 2. FIG.

Hereinafter, an embodiment of the cold insulation material storage bag (hereinafter, simply referred to as a storage bag) of the present invention will be described. Each of the embodiments shown below is merely an example, and the technical scope of the present invention is not limited to the illustrated embodiment. 1 to 5 show a first embodiment of a cold insulation material storage bag. FIG. 6 shows a second embodiment of the cold insulation material storage bag. FIG. 7 shows a third embodiment of the cold insulation material storage bag. FIG. 10 shows an example of a cooling sensation garment.

[First Embodiment]
As shown in FIGS. 1 to 3, the storage bag 1a of the present embodiment is for containing the cold insulating material 12. As shown in FIGS. 3 and 4, the storage bag 1a includes a bag portion 13 made of a laminated material of a heat insulating layer 131 and a metal thin film 132, and a heat insulating material 15 housed inside the bag portion 13. Have. The heat insulating material 15 is arranged only on one of the one side and the other side of the bag portion.

As shown in FIGS. 3 and 4, the bag portion 13 is a bag-shaped portion made of a sheet-like material in which a metal thin film 132 is laminated on a heat insulating layer 131. In the storage bag of the present embodiment, the bag portion 13 is provided with welding portions 133 at the left and right end portions and the upper end portion. In the welded portion, the heat insulating layer constituting the bag portion 13 is closed by heat welding. The lower end of the bag portion 13 is a portion where the dry heat layer 131 and the metal thin film 132 are folded over, and no welding portion is provided. When manufacturing the storage bag 1a of the present embodiment, the bag portion 13 is used in which the left and right end portions are welded and the upper end portion is an opening. The storage bag 1a can be manufactured by inserting the cold insulating material 12 and the heat insulating material 15 from the opening of the upper end portion and welding the upper end portion.

In the storage bag of the present embodiment, the bag portion 13 is stored in the protective bag 14. The protective bag 14 is made of a thermoplastic resin. Welding portions 141 are provided at the left and right ends and the upper and lower ends of the protective bag 14. When manufacturing the storage bag 1a of the present embodiment, the protective bag 14 is used in which the left and right end portions and the lower end portions are welded. The storage bag 1a can be manufactured by inserting the bag portion 13 through the opening of the upper end portion and welding the upper end portion.

In the storage bag 1a of the present embodiment, either the surface in contact with the object to be cooled or the surface facing the object to be cooled, the surface opposite to the object to be cooled, or the heat insulating material 15 is arranged on any surface. A display unit 171 indicating whether or not the product is used is provided on the bag unit 13. In the storage bag 1a of the present embodiment, one display unit 171 is provided on one surface of the bag portion and one on the other surface of the bag portion. The heat insulating material 15 housed in the bag portion 13 cannot be visually recognized from the outside of the bag portion 13, but by providing a display portion, any surface of the storage bag is arranged so as to be on the cooling object side. It becomes possible to easily determine whether or not it should be used.

As shown in the examples of FIGS. 2 and 3, the display unit may be distinguished by characters such as "outside" and "inside", by a picture, by a symbol, and by color. It may be distinguished by shape. In the case of distinction by picture, symbol, color, or shape, make sure that the shape of the storage bag differs between the front side and the back side, and in the instruction manual, which picture, symbol, color, or shape should be on the side exposed to sunlight. You just have to explain if it becomes.

In the storage bag 1a of the present embodiment, as shown in FIGS. 1, 3, and 4, the heat insulating material 15 is arranged on the side where the "outside" is displayed, and the "inside" is displayed on the lower side. The material 12 is arranged.

The display unit may be configured by, for example, a label such as a sticker on which a display of characters or the like is printed, or may be configured by printing characters or the like on a bag portion or a protective bag.

In the example of the present embodiment, the heat insulating material 15 is composed of a heat insulating layer 154, a first heat insulating material 151 having a metal thin film 153, and a second heat insulating material 152 composed of a heat insulating layer. A metal thin film may also be laminated on the second heat insulating material 152. The first heat insulating material 151 and the second heat insulating material 152 are not joined to each other and are put into the bag portion 13 in a stacked state. Therefore, air is contained between the first heat insulating material 151 and the second heat insulating material 152. Due to the presence of this air, the heat insulating effect on the opposite surface of the object to be cooled is further enhanced, and the cooling effect is configured to be longer.

In the example of the present embodiment, as shown in FIG. 3, the first heat insulating material 151 is arranged on the outer side of the bag portion 13, and the second heat insulating material 152 is arranged on the inner side of the bag portion 13. With this configuration, it is possible to extend the duration of the cold insulation effect. The outward side of the bag portion refers to a direction close to the surface of the bag portion, and the inward side of the bag portion refers to a direction close to the inside of the bag portion.

In the storage bag 1a of the present embodiment, a bubble wrap material is adopted as the heat insulating layer 131 constituting the bag portion 13. Since the metal thin film 132 is laminated on the bubble wrap constituting the heat insulating layer 131, the metal thin film has irregularities corresponding to the shape of the bubbles of the bubble wrap as shown in FIGS. 1 and 2. The pattern caused by appears. This uneven pattern is visually recognized through the transparent protective bag 14, and enhances the aesthetic appearance of the storage bag.

As shown in FIG. 5, the bubble wrap constituting the heat insulating layer 131 is thermoplastic that forms two sheets of thermoplastic resin 161 and closed cells 163 arranged between the two sheets. It has a shape joined with a resin sheet 162. The closed cell is configured as a circular protrusion protruding from one sheet 161 toward the other sheet 161. The apex of the convex portion is in contact with the other sheet, and the bottom of the convex portion is in contact with one sheet. The bubble wrap is composed of two sheets 161 so that the front and back surfaces are relatively smooth. One of the two sheets 161 of the bubble wrap constitutes the inner surface of the bag portion. Since the inner surface is a relatively smooth surface, it is difficult for the cold insulating material or the like to get caught when the cold insulating material 12 or the heat insulating material 15 is inserted.

In the storage bag 1a of the present embodiment, the heat insulating material 15 is arranged only on one of the one side and the other side of the bag portion 13, and the heat insulating material 15 is provided between the bag portion 13 and the cold insulating material 12. Other than the material 15, another heat insulating material is not arranged. Therefore, the thickness of the storage bag 1a is not excessively large and is not bulky. For example, when the storage bag is fixed to the cooling garment, the comfort of the cooling garment is not easily impaired.

[Second Embodiment]
In the storage bag 1b of the present embodiment, as shown in FIG. 6, the first heat insulating material 151 and the second heat insulating material 152 are laminated when they are put into the bag portion 13, as compared with the storage bag 1a described above. The order is different. In the storage bag 1b, the second heat insulating material 152 is arranged on the outer side of the bag portion 13, the first heat insulating material 151 is arranged on the inner side of the bag portion 13, and the first heat insulating material 151 and the second heat insulating material are arranged. The first heat insulating material 151 and the second heat insulating material 152 are inserted into the bag portion 13 in a state where the 152 is overlapped with each other. The cold insulating material 12 is inserted into the bag portion 13 so as to be inside like the storage bag 1a.

[Third Embodiment]
The storage bag 1c of the present embodiment is different from the storage bag 1a described above in that the heat insulating material 15c is composed of only a single heat insulating layer, as shown in FIG. 7. The heat insulating material 15c is inserted into the bag portion 13 so as to be on the opposite side, that is, the outside of the object to be cooled. Like the storage bag 1a, the cold insulating material 12 is inserted into the bag portion 13 so as to be on the side to be cooled, that is, inside.

Since the storage bag 1c of the present embodiment is provided with the heat insulating material 15c on the opposite side of the object to be cooled, the heat insulating material is delayed from melting due to sunlight or lighting radiated from the outside of the storage bag 1c or the outside air temperature. The cold insulation effect can be maintained for a long time. However, no metal thin film is arranged on the heat insulating material 15c, and since the heat insulating material is single, the heat insulating material does not include an air layer between the plurality of heat insulating materials. Therefore, the duration of the cold insulation effect is shorter than that of the storage bag 1a or the storage bag 1b described above.

In the storage bag in each of the above embodiments, the heat insulating layer constituting the bag portion, the heat insulating layer constituting the second heat insulating material, and the heat insulating layer constituting the heat insulating material are a sheet made of foamed synthetic resin or a sheet-shaped bubble wrap. It can be made of wood. As the bubble wrap, a material obtained by joining at least one thermoplastic resin sheet and a sheet made of a thermoplastic resin forming closed cells can be used.

In the storage bag in each of the above embodiments, the metal thin film constituting the bag portion or the metal thin film of the first heat insulating material can be composed of a thin film made of metal such as aluminum foil or copper foil. The method of laminating the metal thin film on the heat insulating layer is not particularly limited, and for example, the metal thin film may be deposited by vapor deposition of metal, or the metal thin film may be adhered to the heat insulating layer.

The display portion may be provided on the protective bag 14, or may be provided on both the protective bag 14 and the bag portion 13. Further, the display unit may be provided only on one surface or the other surface of the bag portion or the protective bag.

As the foamed synthetic resin constituting the heat insulating layer, for example, polyolefins such as polyethylene and polypropylene; nylon; and plastics such as polyurethane and polystyrene can be used.

As the thermoplastic resin constituting the protective bag or the thermoplastic resin constituting the bubble wrap, for example, polyolefins such as polyethylene and polypropylene; nylon; or polyethylene terephthalate can be used.

The storage bag according to each of the above embodiments can be used for cooling food, beverages, etc., and is suitable for being detachably fixed to clothes to cool the body of the person who wears the clothes. Can be used. Therefore, examples of the object to be cooled include foods, beverages, human bodies, animal bodies, and the like.

In the present specification, clothes that cool the body of a person who wears clothes are referred to as cooling garments. Examples of such garments include upper garments such as jackets and vests, lower garments such as trousers and skirts, and coveralls in which upper garments and lower garments are integrated. To attach and detach the storage bag to clothes, for example, store the storage bag in a pocket provided on the clothes, fix the storage bag to the clothes with a hook-and-loop fastener, or fix the weekly bag to the clothes with a button. Alternatively, it can be realized by fixing the storage bag to clothes with a string.

The shapes of the bag portion, the protective bag, and the heat insulating material are not particularly limited, and can be changed according to the shape of the cold insulating material to be stored. For example, the shape seen from one surface or the other surface can be a rectangle such as a square or a rectangle, an ellipse, a circle such as a new circle, or a polygon such as a triangle. The method of forming the bag portion and the protective bag is not limited to welding, and means such as stitching may be adopted. The position where the bag portion and the protective bag are joined by welding or the like is not particularly limited and can be changed as appropriate.

The thickness of each member constituting the protective bag and the bag portion can be changed as appropriate.

An example of a cold insulation material storage bag will be given and more specifically described. The configuration of the present invention is not limited to the examples listed below. In the following, the cold insulation material storage bags according to Example 1, Example 2, and Comparative Example 1 were prepared, and the duration of each cold insulation effect was confirmed.

[Example 1]
By the method shown below, a cold insulation material storage bag having the shape shown in FIG. 3 was produced. The following materials were prepared. As a protective bag, a bag made of a transparent polyethylene sheet material having a thickness of 20 μm was prepared. The protective bag has a length of 170 mm in the longitudinal direction and a length of 140 mm in the lateral direction, and its three sides are joined by heat welding. One side of the remaining upper end is an opening.

As a bag portion, a bubble wrap having two sheets made of transparent polyethylene having a thickness of 20 μm and a sheet forming closed cells arranged between the two sheets; the bubble wrap. A bag made of a sheet material made of a laminated aluminum thin film having a thickness of 5 μm was prepared. The bag portion has a shape in which the polyethylene sheet of the rectangular sheet material is folded in the middle so as to overlap each other so that the polyethylene sheet is inside, and the left and right edges are joined by heat welding. The two left and right sides are welded portions, one side of the lower end portion is a folded portion, and one side of the upper end portion is an opening portion. The size of the bag portion is configured so that it can be stored in the above-mentioned protective bag.

As the cold insulating material, a commercially available cold insulating material was used. The cold insulation material is a bag made of a plastic film in which a gel for cold insulation is enclosed. The cold gel contains water, sodium polyacrylate, preservatives and shape stabilizers. The cold gel is gel-like in the state before freezing, and becomes solid when frozen. The object is cooled by utilizing the endothermic process of the cold insulation gel undergoing a phase transition from a solid to a liquid.

As the heat insulating material, a first heat insulating material obtained by laminating an aluminum thin film having a thickness of 2 μm on a polyethylene foam sheet having a thickness of 1.0 mm and a second heat insulating material which is a sheet of expanded polystyrene having a thickness of 3.0 mm were used. .. The first heat insulating material and the second heat insulating material are not joined to each other and are used in an overlapping manner. An air layer is formed between the first heat insulating material and the second heat insulating material.

The above-mentioned cold insulating material, the first heat insulating material, and the second heat insulating material are stacked and stored in the bag portion. The opening at the upper end of the bag was sealed by heat welding. The sealed bag portion was put into the above-mentioned protective bag, and the opening of the protective bag was heat-welded to obtain a protective bag for a cold insulating material according to Example 1. When the cold insulating material, the first heat insulating material, and the second heat insulating material are put into the bag portion, the first heat insulating material, the first heat insulating material, and the second heat insulating material are viewed from the outer surface of the storage bag, that is, the surface opposite to the object to be cooled. 2 The first heat insulating material, the second heat insulating material, and the cold insulating material were put in the bag portion in the order of the heat insulating material and the cold insulating material. At this time, a polyethylene sheet constituting the bubble wrap is exposed on the inner surface of the bag portion, and the inner surface is configured as a smooth surface with less unevenness. Therefore, when the first heat insulating material, the second heat insulating material, and the cold insulating material are put into the bag portion, the first heat insulating material or the like can be smoothly inserted without being caught on the inner surface of the bag portion.

The aluminum foil, which is the metal thin film of the bag portion, and the aluminum foil, which is the metal thin film of the first heat insulating material, both have a configuration in which the aluminum foil is arranged on the outside of the cold insulation material storage bag.

[Example 2]
When the cold insulating material, the first heat insulating material, and the second heat insulating material are put into the bag portion, the second heat insulating material, the first, is viewed from the outer surface of the storage bag, that is, the surface opposite to the object to be cooled. Same as the cold insulation material storage bag of Example 1 except that the first heat insulating material, the second heat insulating material, and the cold insulating material are stacked in the order of the heat insulating material and the cold insulating material and put into the bag portion. The cold insulation material storage bag according to the second embodiment was produced with the configuration of.

[Comparative Example 1]
For comparison, the same cold insulation material as that used in Example 1 was prepared. This cold insulation material was used alone without being covered with a protective bag.

[Comparative Example 2]
For comparison, as shown in FIG. 8, the bag portion 13c made of a sheet-like laminated material in which an aluminum thin film having a thickness of 5 μm is laminated on a sheet of foamed polyethylene having a thickness of 1.0 mm is used in Example 1. The same cold insulation material 12 used in 1 was stored, and this was used as the cold insulation material storage bag 1d according to Comparative Example 2.

[Evaluation of cold insulation effect 1]
Each of the cold insulation material storage bag according to Example 2, the cold insulation material according to Comparative Example 1, and the cold insulation material storage bag according to Comparative Example 2 is placed in a freezer at −20 ° C., and the cold insulation gel of the cold insulation material is frozen to the core. rice field.

The frozen cold insulation material storage bag and the cold insulation material were placed on a heat insulating sheet installed in a room not exposed to direct sunlight. When the cold insulation material storage bag according to the second embodiment is placed on the heat insulating sheet, as shown in FIG. 9, the surface on which the first heat insulating material 151 and the second heat insulating material 152 are arranged, that is, FIG. 6 It was arranged so that the "outside" shown in was on top. As shown in FIG. 9, a thermometer 3 was inserted between the cold insulation material storage bag 1b and the heat insulating sheet 2, and the temperature change from 8:30 am to 6:30 pm was recorded every 30 minutes. .. The test was conducted in an environment where the temperature in the room where the test was conducted was within the range of 27 ° C to 31 ° C. As the heat insulating sheet 2, a foamed polyethylene sheet having a thickness of 25 mm was used. The insulation sheet was used to eliminate the effect of the temperature of the ground on which the cold insulation storage bag was placed. The result of measuring the temperature is shown in the graph of FIG.

As shown in FIG. 11, in the case of Comparative Example 1 in which the cold insulating material was used alone, the cold insulating effect began to be lost only 3 hours after the start of the test, and sunlight was indirectly emitted 6 hours after the start of the test. The temperature on the surface opposite to the irradiated side has exceeded 25 ° C. Further, in the case of Comparative Example 1, the temperature on the surface opposite to the side irradiated with sunlight was below 0 ° C. and was in a supercooled state.

As shown in FIG. 11, in the case of the cold insulation material storage bag according to Comparative Example 2, the cold insulation effect begins to be lost 5 and a half hours after the start of the test, and the side exposed to sunlight 9 hours after the start of the test. The temperature on the opposite side of the surface has exceeded 25 ° C. Further, in the case of the storage bag for the cold insulating material of Comparative Example 2, the temperature on the surface opposite to the side exposed to sunlight was lower than 5 ° C. and was in a supercooled state.

As shown in FIG. 11, in the case of the cold insulation material storage bag according to the second embodiment, the cold insulation effect is not suddenly lost, and sunlight is indirectly irradiated even after 10 hours or more have passed since the start of the test. The temperature on the opposite surface of the surface was below 25 ° C. The cold insulation material storage bag of the present embodiment has a multi-layer structure having a bag portion having a heat insulating layer, a metal thin film, and a heat insulating material on the opposite side of the cold insulation object whose temperature tends to rise. As a result, heat transfer on the opposite surface of the object to be cooled was suppressed, and the cooling effect could be maintained for 10 hours or more. Further, in the case of the storage bag for the cold insulating material of Example 2, the temperature on the surface opposite to the surface indirectly irradiated with sunlight does not fall below 5 ° C., and the human body, animal body, and food , Or the temperature was optimal for cooling beverages and the like.

[Evaluation of cold insulation effect 2]
For the purpose of investigating the relationship between the arrangement order of the first heat insulating material and the second heat insulating material and the cold insulation time, the cold insulation material storage bag according to the first embodiment is subjected to the same method as the above "evaluation 1 of the cold insulation effect". The cold insulation time and the cold insulation time of the cold insulation material storage bag according to the second embodiment were verified. The environmental temperature is around 25 ° C to 26 ° C. The results are shown in FIG. When the cold insulation material storage bag according to the first embodiment is placed on the heat insulating sheet, the surface on which the first heat insulating material 151 and the second heat insulating material 152 are arranged, as shown in FIG. That is, the "outside" shown in FIG. 4 is arranged so as to be on top.

Comparing the duration of the cold insulation effect of the cold insulation material storage bag according to Example 1 and the duration of the cold insulation effect of the cold insulation material storage bag according to Example 2, the cold insulation material storage bag according to Example 1 is colder. It was found that the duration of the effect was slightly longer. Although the detailed mechanism is unknown, it is considered that the aluminum foil of the first heat insulating material arranged on the surface exposed to sunlight reflects infrared rays and further reduces the temperature rise of the cold insulating material.

Next, the cold insulation material storage bag of Example 1 or the cold insulation material storage bag according to Comparative Example 2 was fixed to the best 4 of FIG. 10, and the cooling sensation and the sustained effect of the cold insulation effect were confirmed by sensory evaluation. A pocket 41 is provided inside the back portion of the vest 4, so that the "inside" display portion is on the wearer's skin side in this pocket 41, and the "outside" display portion is the wearer's skin. The cold insulation material storage bag 1a was detachably fixed to the vest 4 by inserting the cold insulation material storage bag so as to be on the opposite side of the side.

In the above best 4, the first portion 42 extending from the wearer's shoulders and the second portion 43 extending in the direction of the wearer's hips are connected by a band 44 configured to be adjustable in length. ing. The band 44 is provided with an adjusting ring 45 so that the length of the band 44 can be increased or decreased. A pocket 41 capable of storing the cold insulating material storage bag 1a is also provided on the outside of the second portion 43.

By adjusting the length of the band 44 to be shorter, the wearer can adjust the cold insulation storage bag 1a stored in the second portion 43 so that it is located under the wearer's armpit. ing.

A vest in which the cold insulation material storage bag according to Example 1 or the cold insulation material storage bag according to Comparative Example 2 is fixed to the pocket 41 of the vest 4 is worn outdoors to obtain the duration of the cold insulation effect and the feeling of coldness. Compared. When the cold insulation material storage bag according to Comparative Example 2 was used, the point where the storage bag touched the body was excessively cooled and felt cold, and the cold insulation effect was lost in a short time.

When the cold insulation material storage bag according to the first embodiment was used, the point where the storage bag touched the body was not excessively cooled, and an appropriate cooling sensation could be obtained. The cold insulation effect lasted for a long time as compared with the cold insulation material storage bag of Comparative Example 2.

The cold insulation material storage bag according to the first embodiment has a configuration in which the heat insulating material is arranged on the side exposed to sunlight, that is, on the outside, and the heat insulating material is not arranged on the opposite side, that is, on the inside of the side exposed to sunlight. Therefore, the thickness of the cold insulation material storage bag does not become excessively large. When the cold insulation material storage bag is put in the pocket of the vest, the thickness of the cold insulation material storage bag does not become excessively large, so that it is possible to reduce the discomfort when wearing by fixing the cold insulation material storage bag to the vest.

1a Cold insulation material storage bag 1b Cold insulation material storage bag 1c Cold insulation material storage bag 13 Bag part 131 Insulation layer 132 Metal thin film 15 Insulation material 15c Insulation material 151 First insulation material 154 Insulation layer 153 Metal thin film 152 Second insulation material 12 Cold insulation material 14 Protective bag 171 display

The present invention relates to a cooling material storage bag and a cooling garment including the same.

Claims (9)

It is a storage bag for putting cold insulation material,
A bag made of a laminated material of a heat insulating layer and a metal thin film,
It has a heat insulating material stored inside the bag,
A cold insulation storage bag in which a heat insulating material is arranged only on one of one side and the other side of the bag portion. It also has a cold insulation material stored inside the bag,
The cold insulation material storage bag according to claim 1, wherein another heat insulating material other than the heat insulating material is not arranged between the cold insulating material and the bag portion. The cold insulation material storage bag according to claim 1 or 2, wherein the heat insulating material is composed of a first heat insulating material having a heat insulating layer and a metal thin film and a second heat insulating material having a heat insulating layer. The first heat insulating material is arranged outside the bag portion, and the second heat insulating material is arranged inside the bag portion.
The cold insulation material storage bag according to claim 3, wherein the first heat insulating material and the second heat insulating material are housed inside the bag portion in a state of being overlapped with each other. The cold insulation material storage bag according to any one of claims 1 to 4, wherein the heat insulating layer constituting the inner surface of the bag portion is a bubble wrap material. The cold insulation material storage bag according to any one of claims 1 to 5, further comprising a protective bag made of a plastic film, the bag portion having a shape covered with the protective bag. The cold insulation material storage bag according to any one of claims 1 to 6, wherein at least one of the protective bag and the bag portion is provided with a display unit indicating which side is the opposite side of the cooling object or the cooling object side. Cooling garment in which the cold insulation material storage bag according to any one of claims 1 to 7 is detachably configured. The cooling garment according to claim 8, wherein the cooling material storage bag is detachably fixed to the cooling garment so that the heat insulating material of the cooling material storage bag is arranged on the opposite side of the wearer's skin.

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