Beverage containers
The beverage container adjusts visibility based on temperature through specific color space relationships, addressing the lack of temperature-dependent visibility in existing designs, offering inconspicuousness when empty or prominence at ideal drinking temperature.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- ASAHI BREWERIES LTD
- Filing Date
- 2024-12-11
- Publication Date
- 2026-06-23
AI Technical Summary
Existing beverage container designs using thermochromic ink only change color with temperature without making the container design less noticeable, lacking temperature-dependent visibility adjustments.
A beverage container design where the thermochromic ink color and adjacent colors are represented by specific distance relationships in a color space, ensuring that the container design becomes less or more noticeable based on temperature changes, using conditions such as α > γ, β > γ or γ > α, β > α, with β ≥ 6.0, to manage visibility.
The container design effectively adjusts visibility based on temperature, providing inconspicuousness when empty or prominence at ideal drinking temperature, enhancing user experience and privacy.
Smart Images
Figure 2026102269000001_ABST
Abstract
Description
[Technical Field]
[0001] This disclosure relates to beverage containers. [Background technology]
[0002] For example, Patent Document 1 describes a technique for indicating whether or not the sake or alcoholic beverage in a container is in a cooled state by attaching a label or seal using thermochromic ink that changes color at a specific temperature to a container of sake or alcoholic beverage. [Prior art documents] [Patent Documents]
[0003] [Patent Document 1] Japanese Patent Publication No. 2004-142767 [Overview of the project] [Problems that the invention aims to solve]
[0004] However, the technology described in Patent Document 1 above only causes the label or seal to change color with temperature, and does not make the colors of the container design less noticeable in response to temperature.
[0005] This disclosure is made in view of the above points and aims to provide a beverage container in which the color of the container design can be made less noticeable depending on the temperature. [Means for solving the problem]
[0006] A beverage container according to one aspect of the present disclosure comprises a main body for containing a beverage and a lid provided on the upper part of the main body, wherein the side surface of the main body includes a thermochromic ink color portion having a thermochromic ink color which is the color of a thermochromic ink that changes color at a specific temperature, and an adjacent color portion having an adjacent color which is a color adjacent to the thermochromic ink color, and the adjacent color, the first thermochromic ink color which is the thermochromic ink color before discoloration, and the second thermochromic ink color which is the thermochromic ink color after discoloration are represented by coordinate points in a color space of a color system, and the distance between the adjacent color and the first thermochromic ink color is α, the distance between the first thermochromic ink color and the second thermochromic ink color is β, and the distance between the adjacent color and the second thermochromic ink color is γ, satisfying the conditions that α > γ, β > γ, and the value of β is greater than or equal to a predetermined value.
[0007] According to this embodiment, the colors of the container design can be made less noticeable depending on the temperature.
[0008] Furthermore, the aforementioned color system color space is L * a * b * It can also be used as a color space.
[0009] According to this embodiment, changes in the color of the container design can be appropriately represented.
[0010] Furthermore, the predetermined value may be set to a value of 6.0 or higher.
[0011] According to this embodiment, changes in the color of the container design can be explicitly identified.
[0012] Furthermore, if there are multiple adjacent colors, the above condition may be satisfied between at least one of the multiple adjacent colors.
[0013] According to this embodiment, even when multiple adjacent colors are present, the colors of the container design can be made less noticeable depending on the temperature.
[0014] Furthermore, the adjacent color portion may be arranged to surround the thermochromic ink color portion.
[0015] According to this embodiment, the colors of a container design can be made less conspicuous if the adjacent color portion surrounds the thermochromic ink portion.
[0016] Furthermore, the adjacent color portion may include a first adjacent color portion and a second adjacent color portion, and the thermochromic ink color portion may be sandwiched between the first adjacent color portion and the second adjacent color portion.
[0017] According to this embodiment, the colors of a container design can be made less conspicuous when adjacent colored portions sandwich the thermochromic ink portion.
[0018] Furthermore, at least one of the relationships between the thermochromic ink color located near the first adjacent color portion and the adjacent color of the first adjacent color portion, and the relationship between the thermochromic ink color located near the second adjacent color portion and the adjacent color of the second adjacent color portion, may satisfy the above conditions.
[0019] According to this embodiment, the colors of the container design can be made less conspicuous in relation to the thermochromic ink color located near the adjacent color portion. [Effects of the Invention]
[0020] According to this disclosure, the colors of the container design can be made less noticeable depending on the temperature. [Brief explanation of the drawing]
[0021] [Figure 1] This is a perspective view showing an example of the appearance of a beverage container before and after discoloration according to the first embodiment. [Figure 2] This is a perspective view showing another example of the appearance of a beverage container before and after discoloration according to the first embodiment. [Figure 3] This is a diagram used to explain the L*a*b* color space. [Figure 4] This figure shows an example of the relationship between distances α, β, and γ according to the first embodiment. [Figure 5]This is a side view showing the external appearance of a beverage container according to Example 1. [Figure 6] This is a side view showing the external appearance of a beverage container according to Example 1. [Figure 7] This is a perspective view showing an example of the appearance of a beverage container before and after discoloration according to the second embodiment. [Figure 8] This is a perspective view showing another example of the appearance of a beverage container before and after discoloration according to the second embodiment. [Figure 9] This figure shows an example of the relationship between distances α, β, and γ according to the second embodiment. [Figure 10] This is a side view showing the external appearance of the beverage container according to Example 2. [Figure 11] This is a side view showing the external appearance of the beverage container according to Example 2. [Figure 12] This is a side view showing the external appearance of the beverage container according to Example 2. [Figure 13] This is a side view showing the external appearance of the beverage container according to Example 2. [Modes for carrying out the invention]
[0022] Hereinafter, an example of an embodiment for carrying out the technology of this disclosure will be described in detail with reference to the drawings. Components and processes that perform similar operations, functions, and roles will be given the same reference numerals throughout the drawings, and redundant explanations may be omitted as appropriate. Each drawing is only a schematic representation to the extent that the technology of this disclosure can be fully understood. Therefore, the technology of this disclosure is not limited to the illustrated examples. Furthermore, in this embodiment, explanations of configurations not directly related to the technology of this disclosure or well-known configurations may be omitted.
[0023] [First Embodiment] Figure 1 is a perspective view showing an example of the appearance of the beverage container 10 before and after discoloration according to the first embodiment.
[0024] As shown in Figure 1, the beverage container 10 according to this embodiment comprises a main body 11 for containing the beverage and a lid 12 provided on the upper part of the main body 11. The side surface 13 of the main body 11 includes a thermochromic ink color portion 14 and an adjacent color portion 15. The thermochromic ink color portion 14 has a thermochromic ink color, which is the color of the thermochromic ink. The adjacent color portion 15 is the background portion of the thermochromic ink color portion 14 and has an adjacent color, which is a color adjacent to the thermochromic ink color. Thermochromic ink is an ink that changes color at a specific temperature and is a known technology. The temperature at which the thermochromic ink changes color can be appropriately determined, for example, according to the ideal drinking temperature of the beverage contained in the container. In the example in Figure 1, the adjacent color portion 15 is arranged to surround the thermochromic ink color portion 14, but each color portion can be arranged according to the design of the container.
[0025] The beverage container 10 according to this embodiment can be, for example, a two-piece beverage can, a three-piece beverage can, a bottle can, a flexible container, a glass bottle, etc. The beverage contained in the beverage container 10 may be an alcoholic beverage or a non-alcoholic beverage. It may also be a beverage produced through a fermentation process or a beverage produced without a fermentation process. If the beverage to be produced is an alcoholic beverage, the alcohol content (volume concentration of ethanol) and the extract concentration are not particularly limited and may be appropriately determined according to the desired product quality.
[0026] In this embodiment, the adjacent color, the first thermochromic ink color, and the second thermochromic ink color are represented by coordinate points in the color space of the color system. When the distance between the adjacent color and the first thermochromic ink color is α, the distance between the first thermochromic ink color and the second thermochromic ink color is β, and the distance between the adjacent color and the second thermochromic ink color is γ, the following conditions are met (hereinafter referred to as the "first discoloration condition"): α > γ, β > γ, and the value of β is greater than or equal to a predetermined value. The first thermochromic ink color is the thermochromic ink color before discoloration, and the second thermochromic ink color is the thermochromic ink color after discoloration. In other words, the first thermochromic ink color, which is distinctly different from the adjacent color, changes to a second thermochromic ink color that is similar to the adjacent color. By satisfying this first discoloration condition, the colors of the container design can be made less conspicuous depending on the temperature.
[0027] Hereinafter, in this embodiment, as an example of a color space of a color system, L * a * b * will be cited for explanation, but other color systems such as L * C * h etc. may also be used.
[0028] Here, when there are a plurality of adjacent colors, it is desirable to satisfy the first color change condition with at least one of the plurality of adjacent colors. For example, the first color change condition may be satisfied with the adjacent color having the largest area among the plurality of adjacent colors. Also, the first color change condition may be satisfied with a plurality (M < N) of adjacent colors in descending order of area among the plurality (N) of adjacent colors. Also, the first color change condition may be satisfied with all the adjacent colors.
[0029] FIG. 2 is a perspective view showing another example of the appearance of the beverage container 10 before and after color change according to the first embodiment.
[0030] As shown in FIG. 2, the beverage container 10 according to the present embodiment includes, as in the example of FIG. 1, a main body portion 11 that houses a beverage, and a lid portion 12 provided on the upper portion of the main body portion 11. The side surface 13 of the main body portion 11 includes a thermochromic ink color portion 14, a first adjacent color portion 15A, and a second adjacent color portion 15B. In the example of FIG. 2, the thermochromic ink color portion 14 is sandwiched between the first adjacent color portion 15A and the second adjacent color portion 15B. In the example of FIG. 2, a mode in which the first adjacent color portion 15A and the second adjacent color portion 15B are located above and below the thermochromic ink color portion 14 is shown, but a mode in which the first adjacent color portion 15A and the second adjacent color portion 15B are located to the left and right of the thermochromic ink color portion 14 may also be used. In this case, at least one of the relationship between the thermochromic ink color located near the first adjacent color portion 15A and the adjacent color of the first adjacent color portion 15A, and the relationship between the thermochromic ink color located near the second adjacent color portion 15B and the adjacent color of the second adjacent color portion 15B may satisfy the first color change condition.
[0031] FIG. 3 is L * a * b *This is a diagram used to explain color spaces. * a * b * The color space is a color space established by the International Commission on Illumination (CIE) and is specified in JIS-Z-8729. * a * b * A color space is intended to describe the colors that the human eye can see and to be used as a reference for device-specific models. * a * b * The three coordinates in the color space are: Lightness L * , chromaticity a * , and chromaticity b * It is expressed as follows: Brightness L * This indicates brightness, and chromaticity a * This indicates a position between red and green, and chromaticity b * This indicates a position between yellow and blue. * =0 represents black, L * =100 represents white. Chromaticity a * Negative values indicate a greener tone, while positive values indicate a redder tone, and the chromaticity b * Negative values indicate a bluer tint, while positive values indicate a yellower tint. Brightness L * , chromaticity a * , and chromaticity b * This can be measured, for example, using an integrating sphere spectrophotometer.
[0032] Figure 4 shows an example of the relationship between distances α, β, and γ according to the first embodiment. As described above, distance α is the distance between the adjacent color and the first thermochromic ink color (before discoloration), distance β is the distance between the first thermochromic ink color and the second thermochromic ink color (after discoloration), and distance γ is the distance between the adjacent color and the second thermochromic ink color. Distances α, β, and γ satisfy the first discoloration condition. Here, the value of distance β is greater than or equal to a predetermined value. The predetermined value is preferably 6.0 or greater, and more preferably 12.0 or greater. Specifically, distances α, β, and γ are the color difference ΔE * It can be expressed by the following equation (1).
[0033] ΔE * =[(ΔL * ) 2 +(Δa *) 2 +(Δb * ) 2 ] 1 / 2 ...(1)
[0034] However, ΔL * Δa * , and Δb * The L between the two contrasting colors * value, a * value, and b * It is the difference in values.
[0035] Here, the color difference ΔE * The degree of difference is evaluated as follows: for example, 0 to less than 0.5 means very slightly different, 0.5 to less than 1.5 means slightly different, 1.5 to less than 3.0 means noticeably different, 3.0 to less than 6.0 means significantly different, 6.0 to less than 12.0 means extremely significantly different, and 12.0 or more means it becomes a different color system. Note that this evaluation is just an example and is not limited to this.
[0036] [Example 1] Refer to Figures 5 and 6 to explain examples of how to calculate distances α, β, and γ. * value, a * value, and b * The values were measured using an integrating sphere spectrophotometer manufactured by X-Rite Corporation (here, X-Rite SP60 series: registered trademark). In this measurement method using the integrating sphere spectrophotometer, the measurement window size of the colorimeter was set to 4 mm, and each measurement target (adjacent color portion, first thermochromic ink color portion, second thermochromic ink color portion) of the beverage container 10 was cut out so that it was flat, and the measurement window of the colorimeter was pressed against the cut-out measurement target to take the measurement. At this time, the measurement was taken so that the surface of the measurement target and the measurement window of the colorimeter were in contact with each other on a flat surface. Multiple measurements were taken for each measurement target, and the average of the multiple measurements was taken as L * value, a * value, and b * It was set as the value.
[0037] L was measured for the beverage container 10 shown in Figure 5. * value, a *value, and b * The values are shown in Table 1. Note that each value is a dimensionless quantity. The example in Figure 5 shows the case where the thermochromic ink color portion 14 of the beverage container 10 changes color from the first thermochromic ink color to the second thermochromic ink color when the beverage container 10 changes from cold to room temperature.
[0038] [Table 1]
[0039] L in Table 1 above * value, a * value, and b * Based on the values, the distances α, β, and γ calculated using the above formula (1) are shown in Table 2.
[0040] [Table 2]
[0041] From Table 2 above, it was confirmed that for the beverage container 10 shown in Figure 5, α, β, and γ satisfy the first discoloration condition, i.e., α > γ, β > γ, and the value of β is 6.0 or higher.
[0042] Next, L was measured for the beverage container 10 shown in Figure 6. * value, a * value, and b * The values are shown in Table 3. Note that each value is a dimensionless quantity. The example in Figure 6 shows the case where the thermochromic ink color portion 14 of the beverage container 10 changes color from the first thermochromic ink color to the second thermochromic ink color when the beverage container 10 changes from cold to room temperature.
[0043] [Table 3]
[0044] L in Table 3 above * value, a * value, and b * Table 4 shows the distances α, β, and γ calculated using the above formula (1) based on the values.
[0045] [Table 4]
[0046] From Table 4 above, it was confirmed that for the beverage container 10 shown in Figure 6, α, β, and γ satisfy the first discoloration condition, i.e., α > γ, β > γ, and the value of β is 6.0 or higher.
[0047] As explained above, according to this embodiment, by satisfying the first discoloration condition, the colors of the container design can be made less conspicuous depending on the temperature. For example, when the cold beverage is gone from the can and it reaches room temperature, satisfying the first discoloration condition, the colors of the container design become less conspicuous. By making the colors less conspicuous, the user can be notified that the can is empty. Also, if the colors of the brand, manufacturer, and type of beverage (such as alcohol) are made less conspicuous when the can is empty, the brand and other information can be hidden when the can is disposed of, contributing to privacy protection. Alternatively, by making the colors conspicuous when the beverage inside the can is cold and satisfying the first discoloration condition when it warms up, the user can be notified that the beverage is at the ideal drinking temperature when the colors are conspicuous. Furthermore, the change in the colors of the container design can provide the user with a new experiential value.
[0048] [Second Embodiment] In the first embodiment described above, a mode in which the thermochromic ink color portion changes to become less noticeable was described. In the second embodiment, a mode in which the thermochromic ink color portion changes to become more noticeable will be described.
[0049] Figure 7 is a perspective view showing an example of the appearance of the beverage container 10A before and after discoloration according to the second embodiment.
[0050] As shown in Figure 7, the beverage container 10A according to this embodiment comprises a main body 11 for containing the beverage and a lid 12 provided on the upper part of the main body 11. The side surface 13 of the main body 11 includes a thermochromic ink color portion 14 and an adjacent color portion 15. The thermochromic ink color portion 14 has a thermochromic ink color, which is the color of the thermochromic ink. The adjacent color portion 15 is the background portion of the thermochromic ink color portion 14 and has an adjacent color, which is a color adjacent to the thermochromic ink color. Thermochromic ink is an ink that changes color at a specific temperature and is a known technology. The temperature at which the thermochromic ink changes color can be appropriately determined, for example, according to the ideal drinking temperature of the beverage contained in the container. In the example in Figure 7, the adjacent color portion 15 is arranged to surround the thermochromic ink color portion 14, but each color portion can be arranged according to the design of the container.
[0051] In this embodiment, the adjacent color, the first thermochromic ink color, and the second thermochromic ink color are represented by coordinate points in the color space of the color system. When the distance between the adjacent color and the first thermochromic ink color is α, the distance between the first thermochromic ink color and the second thermochromic ink color is β, and the distance between the adjacent color and the second thermochromic ink color is γ, the conditions (hereinafter referred to as the "second color change condition") are met such that γ > α, β > α, and the value of β is greater than or equal to a predetermined value. The first thermochromic ink color is the thermochromic ink color before color change, and the second thermochromic ink color is the thermochromic ink color after color change. In other words, the first thermochromic ink color, which is similar to the adjacent color, changes to a second thermochromic ink color that is different to a degree that it can be distinguished from the adjacent color. By satisfying this second color change condition, the colors of the container design can be made more prominent depending on the temperature.
[0052] In this embodiment, L is used as an example of a color space. * a * b * I will explain by listing L * C * Other color systems, such as h, may also be used.
[0053] Here, when there are a plurality of adjacent colors, it is desirable to satisfy the second discoloration condition with at least one of the plurality of adjacent colors. For example, the second discoloration condition may be satisfied with the adjacent color having the largest area among the plurality of adjacent colors. Alternatively, the second discoloration condition may be satisfied with a plurality (M < N) of adjacent colors in descending order of area among the plurality (N) of adjacent colors. Further, the second discoloration condition may be satisfied with all the adjacent colors.
[0054] FIG. 8 is a perspective view showing another example of the appearance of the beverage container 10A before and after discoloration according to the second embodiment.
[0055] As shown in FIG. 8, the beverage container 10A according to the present embodiment includes a main body portion 11 that stores a beverage and a lid portion 12 provided on the upper portion of the main body portion 11, similar to the example of FIG. 7. The side surface 13 of the main body portion 11 includes a temperature indicating ink color portion 14, a first adjacent color portion 15A, and a second adjacent color portion 15B. In the example of FIG. 8, the temperature indicating ink color portion 14 is sandwiched between the first adjacent color portion 15A and the second adjacent color portion 15B. In the example of FIG. 8, the mode in which the first adjacent color portion 15A and the second adjacent color portion 15B are located above and below the temperature indicating ink color portion 14 is shown, but the mode in which the first adjacent color portion 15A and the second adjacent color portion 15B are located to the left and right of the temperature indicating ink color portion 14 is also possible. In this case, at least one of the relationship between the temperature indicating ink color located near the first adjacent color portion 15A and the adjacent color of the first adjacent color portion 15A, and the relationship between the temperature indicating ink color located near the second adjacent color portion 15B and the adjacent color of the second adjacent color portion 15B may satisfy the second discoloration condition.
[0056] Figure 9 shows an example of the relationship between distances α, β, and γ according to the second embodiment. As described above, distance α is the distance between the adjacent color and the first thermochromic ink color (before discoloration), distance β is the distance between the first thermochromic ink color and the second thermochromic ink color (after discoloration), and distance γ is the distance between the adjacent color and the second thermochromic ink color. Distances α, β, and γ satisfy the second discoloration condition. Here, the value of distance β is greater than or equal to a predetermined value. The predetermined value is preferably, for example, 6.0 or greater, and more preferably 12.0 or greater. Specifically, distances α, β, and γ are the color difference ΔE * This is expressed by equation (1) above.
[0057] [Example 2] Refer to Figures 10 to 13 to explain examples of how to calculate distances α, β, and γ. * value, a * value, and b * The values were measured using an integrating sphere spectrophotometer manufactured by X-Rite Corporation (here, X-Rite SP60 series: registered trademark), similar to Example 1 above. In this measurement method using an integrating sphere spectrophotometer, the measurement window size of the colorimeter was set to 4 mm, and each measurement target (adjacent color portion, first thermochromic ink color portion, second thermochromic ink color portion) of the beverage container 10A was cut out so that it was flat, and the measurement window of the colorimeter was pressed against the cut-out measurement target to take the measurement. At this time, the measurement was taken so that the surface of the measurement target and the measurement window of the colorimeter were in contact with each other on a flat surface. The measurement was taken multiple times for each measurement target, and the average of the multiple measurements was taken as L * value, a * value, and b * It was set as the value.
[0058] L was measured for the beverage container 10A shown in Figure 10. * value, a * value, and b * The values are shown in Table 5. Note that each value is a dimensionless quantity. The example in Figure 10 shows the case where the thermochromic ink color portion 14 of the beverage container 10A changes color from the first thermochromic ink color to the second thermochromic ink color when the beverage container 10A changes from room temperature to a cold temperature.
[0059] [Table 5]
[0060] The L in Table 5 above * value, a * value, and b * Based on the values, the distances α, β, and γ calculated using the above formula (1) are shown in Table 6.
[0061] [Table 6]
[0062] From Table 6 above, for the beverage container 10A shown in FIG. 10, it was confirmed that α, β, and γ satisfy the second discoloration condition, that is, γ > α, β > α, and the value of β is 6.0 or more.
[0063] Next, the L measured for the beverage container 10A shown in FIG. 11 * value, a * value, and b * values are shown in Table 7. Note that each numerical value is a dimensionless quantity. The example of FIG. 11 shows the case where the temperature indicating ink color portion 14 of the beverage container 10A changes color from the first temperature indicating ink color to the second temperature indicating ink color when the beverage container 10A changes from cold temperature to normal temperature.
[0064] [Table 7]
[0065] The L in Table 7 above * value, a * value, and b * Based on the values, the distances α, β, and γ calculated using the above formula (1) are shown in Table 8.
[0066] [Table 8]
[0067] From Table 8 above, for the beverage container 10A shown in FIG. 11, it was confirmed that α, β, and γ satisfy the second discoloration condition, that is, γ > α, β > α, and the value of β is 6.0 or more.
[0068] Next, the L * value, a * value, and b * value are shown in Table 9. Note that each numerical value is a dimensionless quantity. The example in FIG. 12 shows the case where the temperature-indicating ink color portion 14 of the beverage container 10A changes color from the first temperature-indicating ink color to the second temperature-indicating ink color when the beverage container 10A changes from a cold temperature to a normal temperature.
[0069]
Table 9
[0070] The L * value, a * value, and b * value in Table 9 above, the distances α, β, and γ calculated using the above formula (1) are shown in Table 10.
[0071]
Table 10
[0072] From Table 10 above, for the beverage container 10A shown in FIG. 12, it was confirmed that α, β, and γ satisfy the second discoloration condition, that is, γ > α, β > α, and the value of β is 6.0 or more.
[0073] Next, the L * value, a * value, and b *The values are shown in Table 11. Note that each value is a dimensionless quantity. The example in Figure 13 is similar to the pattern in Figure 8 described above, and shows the case where the thermochromic ink color portion 14 of the beverage container 10A changes color from the first thermochromic ink color to the second thermochromic ink color when the beverage container 10A changes from cold to room temperature. Here, the relationship between the thermochromic ink color portion 14 and the first adjacent color portion 15A is shown.
[0074] [Table 11]
[0075] L in Table 11 above * value, a * value, and b * Based on the values, the distances α, β, and γ calculated using the above formula (1) are shown in Table 12.
[0076] [Table 12]
[0077] From Table 12 above, it was confirmed that for the beverage container 10A shown in Figure 12, α, β, and γ satisfy the second discoloration condition, i.e., γ > α, β > α, and the value of β is 6.0 or higher.
[0078] Similarly, L was measured for the beverage container 10A shown in Figure 13. * value, a * value, and b * The values are shown in Table 13. Note that each value is a dimensionless quantity. Here, the relationship between the thermochromic ink color portion 14 and the second adjacent color portion 15B is shown.
[0079] [Table 13]
[0080] L in Table 13 above * value, a * value, and b * Based on the values, the distances α, β, and γ calculated using the above formula (1) are shown in Table 14.
[0081] [Table 14]
[0082] From Table 14 above, it was confirmed that for the beverage container 10A shown in Figure 13, α, β, and γ satisfy the second discoloration condition, namely γ > α, β > α, and the value of β is 6.0 or higher.
[0083] As explained above, according to this embodiment, the colors of the container design can be made more prominent in accordance with temperature by satisfying the second color change condition. For example, once the cold beverage is gone from the can and it reaches room temperature, satisfying the second color change condition, the colors of the container design become more prominent. Before the second color change condition is satisfied, the colors can be cool, such as those reminiscent of ice, and once the second color change condition is satisfied, they can be changed to a prominent warm color. In this way, when the beverage is at its ideal drinking temperature, the can can be made to appear cold, informing the user of the optimal drinking temperature. Furthermore, the change in the colors of the container design can provide the user with a new experiential value.
[0084] The configuration of the beverage container described in each of the above embodiments is merely an example and may be modified as needed, without departing from the main purpose.
[0085] The following additional information is disclosed regarding the embodiments described above.
[0086] (Note 1) The main body contains the beverage, A lid portion provided on the upper part of the main body, Equipped with, The side surface of the main body is A thermochromic ink color portion having a thermochromic ink color that changes color at a specific temperature, An adjacent color portion having an adjacent color which is a color adjacent to the aforementioned thermochromic ink color, Includes, The adjacent color, the first thermochromic ink color which is the thermochromic ink color before discoloration, and the second thermochromic ink color which is the thermochromic ink color after discoloration are represented by coordinate points in the color space of the color system, and the distance between the adjacent color and the first thermochromic ink color is α, the distance between the first thermochromic ink color and the second thermochromic ink color is β, and the distance between the adjacent color and the second thermochromic ink color is γ, satisfying the conditions that α, β, and γ satisfy α > γ, β > γ, and the value of β is greater than or equal to a predetermined value. beverage container. (Note 2) The aforementioned color system color space is L * a * b * It is a color space. The beverage container described in Appendix 1. (Note 3) The predetermined value is a value of 6.0 or greater. The beverage container described in Appendix 1 or Appendix 2. (Note 4) If there are multiple adjacent colors, the above condition is satisfied between at least one of the multiple adjacent colors. A beverage container as specified in any one of the following appendices 1 to 3. (Note 5) The adjacent color portion is arranged to surround the thermochromic ink color portion. A beverage container as specified in any one of the following appendices 1 to 4. (Note 6) The adjacent color portion includes a first adjacent color portion and a second adjacent color portion. The thermochromic ink color portion is sandwiched between the first adjacent color portion and the second adjacent color portion. A beverage container as specified in any one of the following appendices 1 to 4. (Note 7) At least one of the relationships between the thermochromic ink color located near the first adjacent color portion and the adjacent color of the first adjacent color portion, and the relationship between the thermochromic ink color located near the second adjacent color portion and the adjacent color of the second adjacent color portion, satisfies the above condition. The beverage containers described in Appendix 6. [Explanation of Symbols]
[0087] 10, 10A beverage container 11 Main body 12 Lid 13 Side view 14 Thermochromic ink color portion 15 Adjacent colored areas 15A First adjacent color portion 15B Second adjacent color portion
Claims
1. The main body contains the beverage, A lid portion provided on the upper part of the main body, Equipped with, The side surface of the main body is A thermochromic ink color portion having a thermochromic ink color that changes color at a specific temperature, An adjacent color portion having an adjacent color which is a color adjacent to the aforementioned thermochromic ink color, Includes, The adjacent color, the first thermochromic ink color which is the thermochromic ink color before discoloration, and the second thermochromic ink color which is the thermochromic ink color after discoloration are represented by coordinate points in the color space of the color system, and the distance between the adjacent color and the first thermochromic ink color is α, the distance between the first thermochromic ink color and the second thermochromic ink color is β, and the distance between the adjacent color and the second thermochromic ink color is γ, satisfying the conditions that α, β, and γ satisfy α > γ, β > γ, and the value of β is greater than or equal to a predetermined value. beverage container.
2. The aforementioned color system color space is L ＊ a ＊ b ＊ It is a color space. The beverage container according to claim 1.
3. The predetermined value is a value of 6.0 or greater. The beverage container according to claim 1.
4. If there are multiple adjacent colors, the above condition is satisfied between at least one of the multiple adjacent colors. The beverage container according to claim 1.
5. The adjacent color portion is arranged to surround the thermochromic ink color portion. The beverage container according to claim 1.
6. The adjacent color portion includes a first adjacent color portion and a second adjacent color portion. The thermochromic ink color portion is sandwiched between the first adjacent color portion and the second adjacent color portion. The beverage container according to claim 1.
7. At least one of the relationships between the thermochromic ink color located near the first adjacent color portion and the adjacent color of the first adjacent color portion, and the relationship between the thermochromic ink color located near the second adjacent color portion and the adjacent color of the second adjacent color portion, satisfies the above condition. The beverage container according to claim 6.