JP2022058050A - Thermally insulated package - Google Patents

Abstract

To provide a thermally insulated package allowing easy determination on whether a medium is liquid or solid.SOLUTION: A thermally insulated package 10 is provided with: a medium 30 of which transparency changes from transparent to opaque as its state changes from liquid to solid, the medium 30 being received in a container 20; a first opaque shield part 21S arranged in a first opposite part 21, out of the first opposite part 21 and a second opposite part 22 opposing each other across the medium 30 in the container 20; a first transparent part 21T arranged in the first opposite part 21; and a second shield part 22S arranged in the second opposite part 22, which is opaque as well as visible through the first transparent part 21T and a liquid medium 30, and which is not, on the other hand, allowed to be visible through the first transparent part 21T upon a solid state of the medium 30 to make the brightness of a color visible through the first transparent part 21T and the liquid medium 30 different from the color brightness of the solid medium 30 visible through the first transparent part 21T.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to a cold and heat insulating package in which a medium that changes its state into a liquid and a solid is contained in an accommodating body, and the medium can be used as a cold insulating material or a heat insulating material.

Conventionally, as a cold and heat insulating package, a package that can be used as a cold insulating material by freezing a medium has been known (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2006-97984 (paragraph [0021], etc.)

It is desired to make it easier to understand whether the medium is a liquid or a solid, as compared with the conventional cold and heat insulating package.

A first aspect of the invention made to solve the above problems is to accommodate a medium that changes from transparent to opaque when the state changes from a liquid to a solid in an accommodating body, and the medium serves as a cold insulating material or a heat insulating material. It is a cold and heat insulating package in which it is possible to visually confirm whether or not it is in a usable state through the housing, and the first facing portion of the first and second facing portions facing each other across the medium in the housing. An opaque first shielding portion provided in the portion, a transparent first transparent portion provided in the first facing portion, and a transparent first transparent portion provided in the second facing portion, which are opaque and the first transparent portion. While the medium is visible through the liquid medium, when the medium becomes solid, it becomes difficult to see through the first transparent portion, and the brightness of the color visually recognized through the first transparent portion and the liquid medium is increased. , A cold and heat insulating package comprising a second shielding portion that is different from the color brightness of the solid medium that is visible through the first transparent portion.

The second aspect of the invention is visually recognized through the first transparent portion as compared with the contrast between the second shield portion visually recognized through the first transparent portion and the medium of the liquid and the first shield portion. The cold and heat insulating package according to the first aspect, wherein the contrast between the solid medium and the first shielding portion is smaller.

A third aspect of the invention is the first aspect or the first aspect in which the color of the solid medium visible through the first transparent portion and the color of the first shielding portion visible from the outside of the container are white. The cold and heat insulating package according to the second aspect.

A fourth aspect of the invention is the cold and heat insulating package according to any one of the first to third aspects, wherein the first transparent portion and the liquid medium are colorless and transparent.

A fifth aspect of the present invention is any one of the first to fourth aspects, wherein the color of the second shielding portion visually recognized through the first transparent portion and the medium of the liquid is a chromatic color. It is the above-mentioned cold insulation and heat insulation package.

A sixth aspect of the present invention is any one of the first to fifth aspects, wherein the color of the second shielding portion visually recognized through the first transparent portion and the medium of the liquid is a bluish color. The cold and heat insulating package according to the embodiment.

In a seventh aspect of the invention, the first transparent portion is separated from the edge portion of the accommodation region of the medium and the edge portion of the accommodation region when viewed from the opposite direction of the first and second facing portions. The cold and heat insulating package according to any one of the first to sixth aspects, which overlaps with the central portion.

An eighth aspect of the invention is the cold and heat insulating package according to any one of the first to seventh aspects, wherein the first transparent portion is dispersedly arranged in the first facing portion.

In the ninth aspect of the invention, the first transparent portion is formed by forming a first symbol that is two-dimensionally repeated in a constant pattern on the first facing portion, and the second shielding portion forms the medium. The cold and heat insulating package according to any one of the first to eighth aspects, which faces the whole of the first symbol by sandwiching it.

In the tenth aspect of the present invention, a first symbol in which the first shielding portion and the first transparent portion are two-dimensionally and alternately repeated in a fixed pattern is formed on the first facing portion. In the second facing portion, a second symbol is formed in which the second shielding portion and the transparent second transparent portion are two-dimensionally and alternately repeated in the same constant pattern as the first symbol. 1 An aspect of any one of the first to eighth aspects, wherein the transparent portion and the second shielding portion are opposed to each other and the first shielding portion and the second transparent portion are arranged to face each other. It is a cold insulation and heat insulation package described in.

The eleventh aspect of the invention is a bag in which the accommodation body is a bag in which the edges of the resin sheets folded in half or two layers are bonded to each other to form an accommodation area for the medium inside, and the first facing portion thereof. The cold and heat insulating package according to any one of the first to tenth aspects, wherein the first transparent portion is dispersedly arranged in the entire portion facing the accommodation area.

In a twelfth aspect of the present invention, the container is provided with a transparent container body and a film covering the outside thereof, and the first shielding portion and the second shielding portion are printed on the film. The cold and heat insulating package according to any one of the first to tenth aspects.

In the cold and heat insulating package of the first aspect of the invention, when the medium is in a transparent liquid state, the first transparent portion and the second shielding portion are visible through the medium, while when the medium is in an opaque solid state, the first transparent portion is visible. It becomes difficult to visually recognize the second shielding portion through the portion. Then, by changing the transparency of the medium in this way, the brightness of the color inside the container visually recognized through the first transparent portion changes. This makes it possible to change the contrast between the color inside the housing and the color of the first shielding portion, which is visible through the first transparent portion when the medium changes state, and whether the medium is a liquid or not. It is possible to easily grasp whether it is a solid.

In the second aspect of the invention, the contrast becomes smaller when the medium changes to a solid. That is, when the medium becomes solid, the color brightness inside the container as seen through the first transparent portion approaches the color brightness of the first shielding portion. Since there is a standard for the color brightness to approach in this way, it is easier to understand that the medium has become solid compared to the case where the contrast increases due to a change in the state of the medium (the difference in color brightness increases). It becomes possible.

In the third aspect of the invention, when the medium changes to a solid, both the solid medium visible through the first transparent portion and the first shielding portion become white, so that the medium becomes solid. It is possible to make it easier to grasp.

As in the fourth aspect of the invention, the first transparent portion and the liquid medium may be colorless and transparent. In this case, the colors of the first shielding portion and the second shielding portion when viewed from the outside on the side of the first facing portion may be different.

In the fifth aspect of the invention, the color of the first transparent portion and the second shielding portion visually recognized through the medium is chromatic. Therefore, when the medium changes from a liquid to a solid and becomes white, it is possible to change the saturation in addition to the change in the lightness of the color inside the container that is visually recognized through the first transparent portion. It is possible to make it easier to grasp the presence or absence of freezing.

In the sixth aspect of the invention, the color of the first transparent portion and the second shielding portion visually recognized through the medium is a bluish color. Since the brightness of the bluish color can be lowered as compared with the hues of yellow, orange, green, etc., it is possible to easily add a contrast with white. This makes it easier to grasp the presence or absence of freezing of the medium.

In the seventh aspect of the invention, the first transparent portion overlaps the edge and the center of the accommodating area of the medium. Therefore, among the media accommodated in the container, it is possible to easily grasp the state change of the medium in the central portion which is difficult to thaw (difficult to freeze) and the edge portion which is easy to thaw (easy to freeze).

In the eighth aspect of the invention, since the first transparent portion is dispersedly arranged in the first facing portion, it is possible to easily grasp the presence or absence of freezing of a plurality of dispersed portions in the medium.

In the ninth aspect of the invention, since the first transparent portion is arranged two-dimensionally and repeatedly in a constant pattern, it is possible to prevent bias within a range in which freezing of the medium can be confirmed. Further, since the second facing portion faces the entire first symbol formed by the first transparent portion, it is possible to widen the angle range in which the second facing portion can be visually recognized through the first transparent portion.

In the tenth aspect of the present invention, the first facing portion and the second facing portion can have the same pattern, which facilitates the formation of the symbol.

The container may be a bag made of a resin sheet (11th aspect of the invention) or a container having a printed film (12th aspect of the invention).

Perspective view of the cold insulation package according to the first embodiment of the present disclosure. Cross-sectional view of the cold and heat insulation package (A) Plan view of cold insulation package when the medium is liquid, (B) Bottom view of cold insulation package Top view of the cold insulation package when the medium is solid (A) Plan view when the medium is a liquid, (B) Bottom view in the cold insulation package according to the second embodiment. Top view when the medium in the cold insulation package according to the second embodiment is a solid (A) plan view, (B) bottom view when the medium in the cold insulation package according to the third embodiment is a liquid. Sectional drawing of the cold insulation package which concerns on 3rd Embodiment (A) plan view, (B) bottom view when the medium in the cold insulation package according to the third embodiment is a solid.

[First Embodiment]
As shown in FIGS. 1 and 2, in the cold and heat insulating package 10 of the present embodiment (hereinafter, appropriately simply referred to as “package 10”), the medium 30 is housed in an accommodating body 20 having a closed region inside. Become. The medium 30 can change its state into a liquid and a solid by changing the temperature outside the container 20. The medium 30 is used as a cold insulating material or a heat insulating material for keeping the temperature of the objects around the package 10 within a certain range by utilizing the latent heat of the state change. For example, the package 10 may be used after cooling the medium 30 to make it solid, or may use it after warming the medium 30 to make it a liquid.

The medium 30 is transparent when it is a liquid and becomes opaque when it is cooled and turned into a solid. In the example of this embodiment, the medium 30 turns white when it changes from a liquid to a solid. The material of the medium 30 can be appropriately selected depending on the temperature at which the package 10 is used as the cold insulating material or the heat insulating material. For example, examples of the medium 30 include those containing paraffin as a main component.

The container 20 may be a bag or a container. In the example of this embodiment, the housing 20 is a bag made of a resin sheet. Specifically, the housing 20 is formed by folding a rectangular resin sheet in half, sealing the edges on three sides, and sticking them together to form a sealed region in which the medium 30 is enclosed. As the resin sheet, for example, a laminated sheet in which a nylon sheet and a polyethylene sheet are laminated can be mentioned. When the medium 30 contains paraffin, the nylon sheet is provided so that the permeation of paraffin can be easily prevented.

As shown in FIG. 2, the accommodating body 20 is provided with first and second facing portions 21 and 22 facing each other with the medium 30 interposed therebetween. Specifically, the first and second facing portions 21 and 22 are each formed of the above-mentioned resin sheet constituting the accommodating body 20 and separated by a crease.

The first facing portion 21 is provided with a transparent first transparent portion 21T capable of seeing through the medium 30 and an opaque first shielding portion 21S. As shown in FIG. 3A, in the present embodiment, a plurality of first transparent portions 21T are provided on the first facing portion 21 and are dispersedly arranged. These first transparent portions 21T form a first symbol that is two-dimensionally repeated in a constant pattern. In the example of the figure, the first transparent portion 21T has, for example, a rhombus shape, and the plurality of first transparent portions 21T are arranged in a rhombic grid pattern arranged in a staggered arrangement in the same direction. Further, the first transparent portion 21T has an edge portion of a closed region accommodating the medium 30 and a center away from the edge portion of the closed region when viewed from the opposite directions of the first and second facing portions 21 and 22. It is arranged so as to overlap with the part. The first transparent portion 21T may be formed so as to overlap the entire edge portion of the medium 30 in the facing direction.

The first shielding portion 21S is composed of the entire portion of the first facing portion 21 excluding the first transparent portion 21T. In the example of the present embodiment, the seal portion 29 having the above-mentioned three-way seal in the housing 20 does not include the first transparent portion 21T and is composed of only the first shielding portion 21S, but is the first transparent portion. The portion 21T may be provided on the seal portion 29.

As shown in FIG. 3B, the second facing portion 22 is provided with an opaque second shielding portion 22S. In the example of this embodiment, the entire second facing portion 22 is the second shielding portion 22S. Therefore, the second shielding portion 22S overlaps with all the first transparent portions 21T in the facing directions of the first and second facing portions 21 and 22.

In the present embodiment, since the first transparent portion 21T is transparent, the medium 30 can be visually recognized through the first transparent portion 21T. Further, when the medium 30 is a liquid, the medium 30 is also transparent, so that the second shielding portion 22S can also be visually recognized through the first transparent portion 21T and the medium 30. On the other hand, when the medium 30 becomes a solid, the medium 30 becomes opaque, so that it becomes difficult for the second shielding portion 22S to be visually recognized through the first transparent portion 21T.

Here, in the cold and heat insulating package 10 of the present embodiment, the color of the inside of the housing 20 visually recognized through the first transparent portion 21T is changed by utilizing the fact that the medium 30 changes from transparent to opaque when frozen. Can be done. That is, the color of the second shielding portion 22S visually recognized through the first transparent portion 21T and the liquid state medium 30 and the color of the solid state medium 30 visually recognized through the first transparent portion 21T are different.

Specifically, in the example of the present embodiment, the second shielding portion 22S is dark blue, and the liquid medium 30 and the first transparent portion 21T are colorless and transparent. Therefore, when the medium 30 is a liquid, the color inside the housing 20 visually recognized through the first transparent portion 21T is dark blue, which is the same as the color of the second shielding portion 22S. Further, the first shielding portion 21S is white. Therefore, as shown in FIG. 3A, when the package 10 is viewed from the side of the first facing portion 21 when the medium 30 is a liquid, the diamond-shaped portion in which the first transparent portion 21T is arranged is dark blue. The second shielding portion 22S is visually recognized, and a rhombic lattice-shaped first pattern in which a dark blue rhombus pattern is inserted on a white background is formed. In this design, the contrast between the white color of the first shielding portion 21S and the dark blue color of the second shielding portion 22S visually recognized through the first transparent portion 21T is large, and the color difference is clear.

On the other hand, as shown in FIG. 4, when the medium 30 freezes and becomes a solid, the medium 30 becomes white as described above, hiding the second shielding portion 22S and making it difficult to see. In this state, when the package 10 is viewed from the first facing portion 21 side, it looks like a plain white color. The white color of the first shielding portion 21S and the white color of the solid medium 30 seen through the first transparent portion 21T are preferably, but are not limited to, exactly the same white color.

As described above, the color of the inside of the housing 20 visually recognized through the first transparent portion 21T changes from dark blue to white, so that it becomes easy to grasp whether the medium 30 is a liquid or a solid. Further, when the medium 30 becomes a solid, the colors of the first shielding portion 21S and the solid medium 30 become similar colors, so that the diamond-shaped grid pattern that was visible when the medium 30 is in a liquid state becomes difficult to see. .. This makes it easier to grasp the presence or absence of freezing of the medium 30.

Further, when the state of the medium 30 changes, the first shielding portion 21S remains white and does not change, whereas the color inside the housing 20 visually recognized through the first transparent portion 21T changes to dark blue and white. And change the brightness. That is, the contrast between the color of the first shielding portion 21S and the color of the inside of the housing 20 visually recognized through the first transparent portion 21T changes. This makes it easier to understand whether the medium 30 is a liquid or a solid. In the example of the present embodiment, when the medium 30 freezes, the medium 30 becomes white and the brightness increases, and the contrast decreases until the contrast disappears or almost disappears. Therefore, it becomes easier to grasp the presence or absence of freezing of the medium 30.

The contrast in the present disclosure means the ratio of the lightness of the color. The change in brightness and the change in contrast can be confirmed numerically by taking an image of the package 10 before and after freezing of the medium 30 and analyzing the brightness of the image with image analysis software or the like. It can be easily confirmed by displaying or printing on a gray scale and comparing the presence or absence of freezing of the medium 30.

When coloring the first shielding portion 21S or the second shielding portion 22S, the outer or inner surfaces of the facing portions 21 and 22 may be colored by printing. Alternatively, the facing portions 21 and 22 may be configured by laminating a colored film on a transparent film. In this case, the colored film may be partially or wholly laminated on the outer surface or the inner surface of the transparent film.

As described above, in the cold and heat insulating package 10 of the present embodiment, when the medium 30 is in a transparent liquid state, the second shielding portion 22S is visually recognized through the first transparent portion 21T and the medium 30, while the medium 30 is opaque. In a solid state, it becomes difficult to visually recognize the second shielding portion 22S through the first transparent portion 21T. Then, by changing the transparency of the medium 30 in this way, the brightness of the color inside the housing 20 visually recognized through the first transparent portion 21T changes. As a result, when the state of the medium 30 changes, the contrast between the color inside the housing 20 visually recognized through the first transparent portion 21T and the color of the first shielding portion 21S can be changed, and the medium 30 can change its state. It is possible to easily grasp whether it is a liquid or a solid.

Further, in the present embodiment, when the medium 30 is changed to a solid, the contrast becomes smaller. That is, when the medium 30 becomes a solid, the color brightness inside the housing 20 as seen through the first transparent portion 21T approaches the color brightness of the first shielding portion 21S. Since there is a standard for the color brightness to approach in this way, it is understood that the medium 30 has become solid as compared with the case where the contrast becomes larger (the difference in color lightness becomes larger) due to the state change of the medium 30. It is possible to make it easier. Moreover, when the medium 30 changes to a solid, both the solid state medium 30 visually recognized through the first transparent portion 21T and the first shielding portion 21S become white, so that the medium 30 has become a solid. It becomes possible to make it easier to grasp.

Further, in the present embodiment, the color of the second shielding portion 22S visually recognized through the first transparent portion 21T and the medium 30 is a chromatic color. Therefore, when the medium 30 changes from a liquid to a solid and becomes white, the color saturation of the inside of the housing 20 visually recognized through the first transparent portion 21T is changed in addition to the change in the lightness of the color. This makes it possible to more easily grasp the presence or absence of freezing of the medium 30.

Further, the color of the second shielding portion 22S visually recognized through the first transparent portion 21T and the medium 30 is a blueish color. Since the brightness of the bluish color can be lowered as compared with the hues of yellow, orange, green, etc., it is possible to easily add a contrast with white. This makes it easier to grasp the presence or absence of freezing of the medium. The blue color includes, for example, blue, navy blue (dark blue, etc.) and the like. The color of the second shielding unit 22S may be a chromatic color other than blue or an achromatic color other than white.

In the present embodiment, the first transparent portion 21T overlaps the edge portion and the central portion of the accommodating region of the medium 30 when viewed from the opposite directions of the first and second facing portions 21 and 22. Therefore, it is possible to easily grasp the change in the state of the medium in the central portion of the medium 30 accommodated in the accommodating body 20 which is difficult to thaw (difficult to freeze) and the edge portion which is easy to thaw (easy to freeze). can. Further, since the first transparent portion 21T is dispersedly arranged in the first facing portion 21, it is possible to easily grasp the presence or absence of freezing of a plurality of dispersed portions in the medium 30. Further, since the first transparent portion 21T is arranged two-dimensionally and repeatedly in a constant pattern and the second facing portion faces the entire first symbol composed of these first transparent portions, the medium. Bias is less likely to occur in the range where the presence or absence of freezing of 30 can be confirmed.

Further, in the package 10 of the present embodiment, since the opaque first shielding portion 21S is provided on the first facing portion 21, air bubbles in the medium 30 are compared with the case where the entire first facing portion 21 is transparent. Even if dust or dust is mixed in, it is possible to make them inconspicuous.

[Second Embodiment]
5 (A) and 5 (B) show the cold and heat insulating package 10V of the second embodiment. In the present embodiment, the color of the first shielding portion 21S is different from that of the first embodiment. Specifically, the first shielding portion 21S has the same color as the second shielding portion 22S, and is, for example, dark blue. Similar to the first embodiment, the medium 30 is colorless and transparent in a liquid state and becomes white and opaque in a solid state. Further, the first transparent portion 21T is also colorless and transparent. As shown in FIG. 5A, in the present embodiment, when the medium 30 is in a liquid state, when the cold and heat insulating package 10V is viewed from the side of the first facing portion 21, it looks like a plain color (for example, a dark blue plain color).

Here, as shown in FIG. 6, when the medium 30 changes state from a liquid to a solid, the medium 30 becomes opaque white, and the color inside the housing 20 visually recognized through the first transparent portion 21T becomes white. Become. As a result, when viewed from the side of the first facing portion 21, the inner portions of the plurality of first transparent portions 21T become white, and the rhombic lattice whose color is reversed from that of the example of FIG. 3A of the first embodiment. The pattern is visible. Also in this embodiment, it is possible to easily grasp the presence or absence of freezing of the medium 30.

[Third Embodiment]
7 (A) and 7 (B) show the cold and heat insulating package 10W of the third embodiment. In the present embodiment, the first symbol is formed in the first facing portion 21 in which the first transparent portion 21T and the second shielding portion 22S are two-dimensionally and alternately repeated in a constant pattern. The second facing portion 22 is provided with a second transparent portion 22T that is transparent and can see through the medium 30. Then, in the second facing portion, a second symbol that is two-dimensionally and alternately repeated in the same constant pattern as the first symbol of the first facing portion 21 is formed.

As shown in FIG. 8, the first transparent portion 21T of the first symbol faces the second shielding portion 22S of the second symbol. Further, the first shielding portion 21S of the first symbol faces the second transparent portion 22T of the second symbol. By doing so, in the first and second facing portions 21 and 22, the transparent portions 21T and 22T and the shielding portions 21S and 22S are arranged in the same pattern, respectively, and the inner surfaces of the shielding portions 21S and 22S are arranged through the medium 30. Can be visually recognized from the outside.

Here, in the present embodiment, the medium 30 is colorless and transparent as in the first embodiment, but the colors of the first and second shielding portions 21S and 22S are different between the outside and the inside of the housing 20. It's different. For example, the color (outside color) of the first and second shielding portions 21S and 22S when viewed from the outside of the housing 20 is white. On the other hand, the color (inner color) when the first and second shielding portions 21S and 22S are viewed from the inside of the housing 20 is, for example, dark blue. Therefore, as shown in FIGS. 7 (A) and 7 (B), in the first symbol and the second symbol, when the medium 30 is a liquid, for example, rhombuses of two kinds of colors are repeated two-dimensionally alternately. It has a checkered pattern.

As shown in FIGS. 9A and 9B, when the medium 30 freezes, the medium 30 becomes opaque white, and the inner surfaces of the first and second shielding portions 21S and 22S become difficult to see. At this time, the package 10W looks like a plain white color when viewed from either side of the first and second facing portions 21 and 22. The package 10W of the present embodiment also makes it easy to grasp the presence or absence of freezing of the medium 30.

In the present embodiment, for example, the housing 20 is a bag, and a pair of resin sheets constituting the first and second facing portions 21 and 22 are stacked on top of each other, and the edges thereof are sealed on all sides. Is formed. In such an accommodating body 20, if a resin sheet in which a transparent transparent portion and an opaque shielding portion are printed in the same constant pattern as the first pattern is used, both the first and second facing portions 21 and 22 are used. Can also be formed. Therefore, it is possible to facilitate the formation of the housing 20 as compared with the case where the resin sheets for the first and second facing portions 21 and 22 are facilitated separately.

[Other embodiments]
(1) In the above embodiment, the container 20 is a bag, but it may be a container such as a blow molded product. When a medium containing paraffin is used as the medium 30, it is preferable to provide a nylon resin layer on the housing 20. For example, the housing 20 may have a single-layer structure of nylon resin or a multi-layer structure including a nylon resin layer. When the container 20 is a container, for example, the container 20 is configured to cover the outside of the transparent container body with a film, and the film-opaque shielding portions (first shielding portion 21S, second shielding portion 22S). Etc.) may be printed.

(2) In the above embodiment, when the medium 30 is in a liquid state, it is colorless and transparent, but it may be colored and transparent. Further, the first transparent portion 21T may be colored and transparent.

(3) The shape of the first transparent portion 21T is not limited to a rhombus, and may be, for example, a circle, a polygon, a star, or a symbol. Or the shape of a letter. For example, when the medium 30 changes to a liquid, the second shielding portion 22S may be configured to visually recognize characters (for example, a character string suggesting that the medium 30 is a liquid) through the first transparent portion 21T. Further, when a plurality of first transparent portions 21T are provided, the shapes of the first transparent portions 21T may be different from each other, or the sizes of the first transparent portions 21T may be different from each other. Further, the arrangement pattern of the transparent transparent portion of the housing 20 and the opaque shielding portion may be, for example, a checkered pattern, a gingham check, or the like. Further, in the first embodiment, the first transparent portion 21T and the first shielding portion 21S may be arranged in a dispersed manner by reversing the arrangement of the first transparent portion 21T and the first shielding portion 21S.

(4) In the second embodiment (see FIG. 5A), the liquid medium 30 is colored, and the color of the second shielding portion 22S visually recognized through the first transparent portion 21T and the liquid medium 30 is colored. , The color may be substantially the same as that of the first shielding portion 21S. As the medium 30, a medium that becomes white or pale when frozen and whose brightness is increased is used. By doing so, the color of the second shielding portion 22S visually recognized through the first transparent portion 21T and the liquid medium 30 becomes substantially the same color as that of the first shielding portion 21S, as in FIG. 5A. It becomes possible to do. Then, when the medium 30 is frozen, the solid medium 30 looks whitish through the first transparent portion 21T as in FIG. 6, and it is possible to obtain the same effect as that of the second embodiment.

(5) In the above embodiment, the inner surface of the second shielding portion 22S is plain, but a handle may be formed. For example, examples of such a pattern include various check patterns and stripe patterns.

Although specific examples of the techniques included in the claims are disclosed in the present specification and the drawings, the techniques described in the claims are not limited to these specific examples, and are specific. Examples include those that have been variously modified or modified, and also include those that are partially taken out from specific examples.

10 Cold and heat insulating package 20 Accommodating body 21 First facing part 21T First transparent part 21S First shielding part 22 Second facing part 22S Second shielding part 30 Medium

Claims (12)

A cold and heat insulating package that contains a medium that changes from transparent to opaque when the state changes from a liquid to a solid in an container.
An opaque first shielding portion provided in the first facing portion of the first and second facing portions facing the medium in the accommodation body, and
A transparent first transparent portion provided on the first facing portion,
It is provided in the second facing portion and is opaque and can be visually recognized through the first transparent portion and the liquid medium. On the other hand, when the medium becomes a solid, it becomes difficult to see through the first transparent portion. A cold insulation portion provided with a second shielding portion in which the color brightness visible through the first transparent portion and the liquid medium is different from the color brightness of the solid solid medium visible through the first transparent portion. Insulation package. The solid medium that is visible through the first transparent portion and the solid medium that is visible through the first transparent portion as compared to the contrast between the second shielding portion that is visible through the first transparent portion and the liquid medium. The cold and heat insulating package according to claim 1, wherein the contrast with the first shielding portion is smaller. The cold insulation according to claim 1 or 2, wherein the color of the solid medium visible through the first transparent portion and the color of the first shielding portion visible from the outside of the container are white. Insulation package. The cold and heat insulating package according to any one of claims 1 to 3, wherein the first transparent portion and the liquid medium are colorless and transparent. The cold and heat insulating package according to any one of claims 1 to 4, wherein the color of the second shielding portion visually recognized through the first transparent portion and the liquid medium is a chromatic color. The cold and heat insulating package according to any one of claims 1 to 5, wherein the color of the second shielding portion visually recognized through the first transparent portion and the liquid medium is a bluish color. The first transparent portion overlaps the edge portion of the accommodation region of the medium and the central portion away from the edge portion of the accommodation region when viewed from the opposite direction of the first and second facing portions. , The cold and heat insulating package according to any one of claims 1 to 6. The cold and heat insulating package according to claim 1, wherein the first transparent portion is dispersedly arranged in the first facing portion. A first symbol in which the first transparent portion is two-dimensionally repeated in a constant pattern is formed in the first facing portion, and the second shielding portion sandwiches the medium in the first symbol. The cold and heat insulating package according to any one of claims 1 to 8, which faces the whole. In the first facing portion, a first symbol in which the first shielding portion and the first transparent portion are two-dimensionally and alternately repeated in a constant pattern is formed.
In the second facing portion, a second symbol is formed in which the second shielding portion and the transparent second transparent portion are two-dimensionally and alternately repeated in the same constant pattern as the first symbol.
The claim according to any one of claims 1 to 8, wherein the first transparent portion and the second shield portion are opposed to each other, and the first shield portion and the second transparent portion are arranged to face each other. The cold and warm package described in the section. The container is a bag in which the edges of the resin sheets folded in half or stacked in two are bonded to each other to form a storage area for the medium inside.
The cold and heat insulating package according to any one of claims 1 to 10, wherein the first transparent portion is dispersedly arranged in the entire portion of the first facing portion facing the accommodation region. The container is provided with a transparent container body and a film covering the outside thereof.
The cold and heat insulating package according to any one of claims 1 to 10, wherein the first shielding portion and the second shielding portion are printed on the film.

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