JP2023028529A - container for drinking or cooking - Google Patents

Abstract

To provide a container that has a reversible thermochromic layer less likely to get damaged even after repeated use and washing so that it can be used for a long period while maintaining good appearance.SOLUTION: A container 1 for holding liquid for drinking or cooking includes a reversible thermochromic layer 8 changing a color when a temperature changes from a room temperature to a prescribed temperature, and provided at a part of an inner or outer surface via a primer layer 12, and a surface of the reversible thermochromic layer 8 is covered by a resin transparent cover layer 13. Since the surface of the reversible thermochromic layer 8 of the container 1 is covered by the resin transparent cover layer 13, the container 1 is less likely to get damaged even after repeated use and washing.SELECTED DRAWING: Figure 3

Description

The present invention relates to a container for drinking or cooking containing drinking liquid such as sake or cooking liquid such as soup.

A pot is a typical example of a cooking container that contains a cooking liquid such as soup or water and heats it together with ingredients as needed. A part of the outer surface of such a pan is provided with a belt-like reversible temperature-sensitive color-changing layer that changes color when the temperature changes from normal temperature to a predetermined temperature, and the temperature of the pan can be visually recognized by the color change of the reversible temperature-sensitive color-changing layer. is described, for example, in Patent Document 1.
A cup is a representative example of a container for drinking liquids such as coffee. Reference 2).

Japanese Patent Application Laid-Open No. 2006-334290 Microfilm of Japanese Utility Model Application No. 47-102793 (Japanese Utility Model Application No. 49-59872)

Conventionally, the reversible thermosensitive color change layer provided on the container has a problem of being easily damaged by repeated use and washing of the container. Of course, even if the reversible thermochromic layer is damaged, there is no problem with the basic function as a container, and therefore it is possible to use it as it is, but of course it looks bad.

In order to solve such problems, the present invention
Containers for drinking or cooking liquids,
A drinking pot having a reversible temperature-sensitive color changing layer that changes color when the temperature changes from room temperature to a predetermined temperature is provided on the inner surface or part of the outer surface through a primer layer, and the surface of the reversible temperature-sensitive color changing layer is covered with a transparent resin cover layer. Or provide a container for cooking.

Further, as described in claim 2, the transparent resin cover layer is made of the same material as the primer layer for fixing the reversible thermosensitive color changing layer to a part of the inner surface or the outer surface. A drinking or cooking container according to claim 1 is provided.

Further, as described in claim 3, there is provided a cooking container according to claim 1 or 2, comprising a container body having an open upper surface and a lid body closing the opening of the container body.

Moreover, as described in claim 4, the reversible thermosensitive color-changing layer is provided on the lid body.

Since the surface of the reversible thermosensitive color changing layer of the container of the present invention is covered with a transparent resin cover layer, the container is not easily damaged even after repeated use and washing. Can be used for a period of time.

Further, according to claim 2, by forming the transparent resin cover layer and the primer layer for fixing the reversible thermosensitive color-changing layer to the container from the same material, expansion and expansion due to temperature change are achieved between the two layers. Since the difference in shrinkage is less likely to occur, the reversible thermochromic layer sandwiched between the layers is less likely to experience heat stress. In addition, management such as procurement and storage of materials is easier than handling two types of materials, resulting in lower costs. There are effects such as being able to

In addition, as described in claim 3, a cooking container composed of a container body and a lid body requires more severe heating conditions than a drinking container, so that the above-mentioned effect appears more remarkably.

In addition, since the reversible thermosensitive color-changing layer has a larger appearance weight on the lid than on the container body, providing the reversible thermosensitive color-changing layer on the lid as described in claim 4 provides a greater benefit. can get

1 is a perspective view of a cooking container; FIG. FIG. 2 is a perspective view of the container body and the lid of FIG. 1 separated; 1 is a longitudinal cross-sectional view of a cooking container including an enlarged view; FIG. It is an enlarged vertical cross-sectional view showing a part of the transfer paper. FIG. 3 is a perspective view of a cooking container showing a state of discoloration due to temperature rise.

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
The container 1 of the embodiment, as shown in FIG. This is a so-called earthenware pot in which liquid for cooking such as soup or water and ingredients are put in the main body 2 side and cooked by covering the opening of the upper surface with the lid body 3. - 特許庁

Although not shown, the container body 2 is covered with a substantially black glaze layer except for the bottom surface. The container main body 2 is formed with a brim-shaped handle piece 2a facing outward, and a circular stepped portion 2b on which the lid 3 is placed on the inner circumference of the opening on the upper surface.

The lid body 3 is composed of a round inverted arm-shaped lid body portion 3a and a handle portion 3b formed at the center of the lid body portion 3a.
The lid body 3 is covered with a substantially yellow glaze layer 4 (see the enlarged view of FIG. 3) over the entire surface including the front and back of the lid body 3a, so that the ground color of the lid body 3a is substantially yellow.
The handle portion 3b of the lid body 3 has an inverted pedestal shape with a concave portion 3c in the center, and is formed integrally with the lid main body portion 3a. The outer peripheral surface and the upper end surface of the handle portion 3b are covered with a substantially black glaze layer 4 that is the same as the container body 2, and the interior of the concave portion 3c is covered with a substantially yellow glaze layer 4 that is the same as the lid body portion 3a.

As shown in FIGS. 1 and 2, the lid body 3 constituting the container 1 is formed on the upper surface (outer surface) of the glaze layer 4 from the peripheral edge of the lid main body 3a to the central handle 3b. 1 pattern 5 and a second pattern 6 whose motif is the well-known family crest "half moon" formed at the bottom of the concave portion 3c of the handle portion 3b.

The first pattern 5 is formed in a decorative area 7 extending from the peripheral edge of the lid main body 3a to the handle 3b. All the virtual circles (not shown) in the decorative area 7 are provided in such a state that they can intersect with the pattern 5 at least once. Specifically, the pattern 5 of the embodiment shown in FIG. In the case of the pattern 5 having the pattern 5, only one base paper frame line 5a satisfies the condition. This is because the vertical frame line 5b of the base paper frame line 5a intersects all the virtual circles in the decoration area 7 one or more times. Similarly, the inverted heart frame line 5c within the background paper frame line 5a also satisfies the above condition. Even if the first pattern 5 were a seemingly random arrangement of a plurality of polka dots, all the polka dots should be combined to satisfy the above conditions.
The effect of the pattern 5 that satisfies the above conditions will be described later.

The first pattern 5 and the second pattern 6 are composed of a reversible temperature-sensitive color changing layer 8 that changes color at a predetermined temperature. The reversible temperature-sensitive color-changing layer 8 of the embodiment is a reversible temperature-sensitive ink (for example, Sakura Crepas " Sakura TC color").
Therefore, at room temperature, the first pattern 5 and the second pattern 6 are orange because the red color of the reversible temperature-sensitive ink is superimposed on the yellow background color of the recess 3c of the lid main body 3a and the handle 3b. , can be clearly recognized in contrast with the ground color (yellow) as shown in FIG.
On the other hand, the first pattern 5 and the second pattern 6 change color to almost the same yellow color as the lid main body 3a and the like when the temperature of the lid 3 rises from room temperature to about 55° C. or higher. It blends in with the ground color (yellow) and becomes inconspicuous.

The patterns 5 and 6 of the reversible thermosensitive color changing layer 8 are formed by the transfer paper 9 . Specifically, as shown in FIG. A primer layer 12 made of, for example, epoxy resin clear is applied, and a reversible temperature-sensitive color change layer 8 made of the reversible temperature-sensitive ink is applied on the primer layer 12 in the shape of the first pattern 5 or the second pattern 6. a transparent resin cover layer 13 made of the same material as the primer layer 12 applied on the reversible thermosensitive color change layer 8; and a transparent cellophane sheet 14 covering the upper surface of the transparent resin cover layer 13. and consists of

The transfer paper 9 having such a structure is soaked in water, the backing paper 10 is peeled off, and the wet transfer paper 9 is pasted on the lid main body 3a and the recessed portion 3c of the handle 3b at predetermined positions, dried, and finally. Then peel off the transparent sheet 14 on the surface.
As a result, the primer layer 12, the reversible thermochromic layer 8, and the transparent resin cover layer 13 are stuck to the outer surface of the lid 3 in a stacked state, so that the lid 3 is baked at about 170° C. for about 40 to 60 minutes. It is heated in a kiln and then cooled to room temperature.

Then, the epoxy resin clear constituting the primer layer 12 and the resin-made transparent cover layer 13 is appropriately melted and solidified. A transparent cover layer 13 is adhered to and covers the surface of the reversible thermosensitive color changing layer 8 .

In the cooking container 1 of the above-described embodiment, a cooking liquid such as soup or water and, if necessary, ingredients are placed in the container body 2, and the top opening is covered with the lid 3 and heated with a stove or the like. However, since the container 1 is almost at room temperature immediately after the heating is started, it is decorated with distinct orange patterns 5 and 6 by the reversible thermosensitive color changing layer 8 as shown in FIG.
When heating progresses from this state, the temperature of the lower side of the container body 2 first rises, then heat is transmitted from the stepped portion 2b of the container body 2 to the lid body portion 3a of the lid body 3, and the heat is transferred to the handle at the center. It is transmitted toward the portion 3b.
Then, from the part where the temperature of the reversible temperature-sensitive color-changing layer 8 exceeds 55° C., that is, from the peripheral edge side of the lid main body 3a toward the central handle 3b, the color gradually changes to yellow as if climbing an inverted bowl-shaped curved surface. , and finally the second pattern 6 on the handle portion 3b turns yellow. As described above, since the ground color of the recess 3c of the lid body 3a and the handle 3b is also substantially yellow, the patterns 5 and 6 are mixed with the ground color of the lid body 3 as shown in FIG. In this way, the change in the appearance that the patterns 5 and 6 are mixed with the background color, specifically, the appearance movement as if the vivid color of the pattern 5 is sucked up from the foot of the mountain toward the top and disappears. The change in temperature can be produced as a decorative interest by the change in temperature, and the heat spreads evenly inside the container 1 and the lid body 3 is hot and dangerous to touch. can inform others.

In addition, as already described, the heat of the lid body 3 is gradually transmitted from the peripheral edge side of the lid main body 3a toward the central handle portion 3b. On the other hand, as described above, the first pattern 5 is formed in the decorative area 7 extending from the peripheral edge of the lid body 3a to the handle 3b, and is centered at the center of the handle 3b in plan view. of all the virtual circles (not shown) in the decorative area 7, that is, even if the pattern 5 appears to be discrete polka dots, one of the polka dots By setting a state in which one of the three parts always intersects the virtual circle, a change in the reversible thermosensitive color change layer 8 with respect to the direction of heat movement occurs somewhere in the polka dots that make up the pattern. can be visualized almost continuously. Incidentally, if the pattern is not continuous from the periphery to the center of the lid main body 3a, that is, if the pattern is interrupted in the direction of heat transfer, the change in the pattern will not be visible at that portion, so it will not be visible to the viewer. Interest may drop precipitously.

The container 1 described so far is also an embodiment of the following problems that exist in Patent Document 1 and the following technical means for solving the problems.

[Problem of Patent Document 1]
The reversible temperature-sensitive color-changing layer of Patent Document 1 is provided in a strip shape on the outer peripheral surface of the container body of the cooking container, and the heat of the container body can be visually transmitted by the color change of the reversible temperature-sensitive color-changing layer. .
However, it is the lid covering the upper surface of the container body that is often touched in the cooking container. Accidents can not be prevented.

[Technical thought 1]
In order to solve such problems, the present invention
It comprises a container body with an open top and a lid covering the opening of the container body, and at least a liquid for cooking is put into the container body and the opening of the container body is covered with the lid to be heated. A cooking container,
Provided is a cooking container characterized in that a reversible temperature-sensitive color changing layer that changes color when the temperature rises from room temperature to a predetermined temperature is provided on a part of the outer surface of the lid.
According to this cooking container, since the heat of the lid can be visually recognized by the color change due to the temperature rise of the reversible temperature-sensitive color-changing layer, it is possible to prevent the accident of being burned by inadvertently touching the hot lid. can.

[Technical thought 2]
The lid includes an inverted arm-shaped lid body and a handle formed at the center of the lid body,
The reversible temperature-sensing color-changing layer includes all imaginary circles centered at the center of the handle part, and any part of the imaginary circles in the decorative area extending from the approximate peripheral edge of the lid body part to the handle part. The container for cooking according to Technical Idea 1, which forms a pattern that can intersect at least once with the
The heat of the lid body is gradually transmitted from the peripheral edge side of the lid body portion toward the central handle portion. On the other hand, the above-mentioned pattern is formed as a decorative area in a range extending from the peripheral edge of the lid body to the handle, and is formed in a virtual pattern centered on the center of the handle in a plan view. A state in which all the circles in the decorative area can intersect at least once. In other words, even if the pattern appears to be discrete polka dots, one of the polka dots must intersect with the virtual circle at some point. Strictly speaking, some spots are unavoidable, but the change in the reversible thermochromic layer in the direction of heat transfer occurs almost anywhere in the polka dots that make up the pattern. Therefore, heat transfer can be visually represented almost continuously. By the way, if the pattern is not continuous from the periphery to the center of the lid main body, that is, if the pattern is interrupted in the direction of heat transfer, the change in the pattern will not be visible at that part, so the viewer will be interested in it. may drop sharply.
In addition, by making the reversible thermochromic layer a pattern instead of a simple symbol such as a band, even if the reversible thermochromic layer fails to function normally after long-term use, the decorative value as a pattern is not lost. There is no pattern, so you can continue to use it as a patterned cooking vessel.

[Technical thought 3]
Cooking according to technical idea 1 or 2, characterized in that the handle part of the lid body has an inverted pedestal shape having a recess in the center, and the reversible temperature-sensitive color changing layer is also provided on the bottom of the recess. container.
The handle part in the center of the lid body is the part whose temperature rises last, and the color change of the reversible temperature-sensitive color change layer provided in that part informs the cook that heat is also circulating in the handle part. can. In addition, since the reversible temperature-sensitive color-changing layer is provided on the bottom of the concave portion of the handle portion having the inverted pedestal shape having the concave portion, the reversible temperature-sensitive color-changing layer is less likely to be rubbed against objects and thus is less likely to be damaged.

[Technical Thought 4]
3. The cooking container according to any one of technical ideas 1 to 3, wherein the reversible temperature-sensitive color-changing layer has a color changed by temperature rise substantially the same as the background color of the lid.
In this case, when the reversible thermochromic layer changes color due to temperature rise, almost the same color is applied to the base color of the lid, and the same color looks darker, so the pattern of the reversible thermochromic layer is visible even though it blends into the base color. remain to some extent. As a result, even when the reversible temperature-sensitive color-changing layer changes due to temperature rise, the function as a pattern is not lost, and the attention of cooks and the like is easily attracted.

Although the embodiments of the present invention have been described above, the present invention is of course not limited to the above embodiments. For example, the background color of the container 1 and the color of the reversible thermochromic layer before and after the change may be of any kind. Moreover, the patterns 5 and 6 may be of any type as long as they have a decorative property other than simple symbols or characters, as long as they do not deviate from the requirements of the present invention.

Further, in the embodiment, the container 1 is explained as a clay pot which is a container for cooking, but the present invention can also be applied to containers for drinking such as sake cups, glasses or mugs. In this case, the reversible temperature-sensitive color change layer changes the pattern on the inner surface of the cup as the temperature drops when cold sake is poured in, or changes the pattern on the outer surface of the glass when the temperature drops when cold beverages are poured. Alternatively, when boiling water is poured, the temperature rises and the pattern provided on the outer surface of the mug changes. Even in such a case, the resin-made transparent cover layer 13 can improve the durability of the reversible temperature-sensitive color changing layer 8 against use and washing.

REFERENCE SIGNS LIST 1 ... container 2 ... container body 2a ... handle piece 2b ... stepped portion 3 ... lid body 3a ... lid main body portion 3b ... handle portion 3c ... concave portion 4 ... glaze layer 5 ... first pattern 5a ... background paper frame line 5b ... vertical Frame line 5c ... Inverted heart frame line 6 ... Second pattern 7 ... Decoration area 8 ... Reversible thermosensitive color change layer 9 ... Transfer paper 10 ... Mounting paper 11 ... Water-soluble glue layer 12 ... Primer layer 13 ... Resin transparent cover layer 14 … transparent sheet

Claims (4)

Containers for drinking or cooking liquids,
A reversible temperature-sensitive color changing layer that changes color when the temperature changes from room temperature to a predetermined temperature is provided on a part of the inner surface or the outer surface through a primer layer, and the surface of the reversible temperature-sensitive color changing layer is covered with a transparent resin cover layer. A drinking or cooking container characterized by 2. The beverage according to claim 1, wherein the transparent resin cover layer is made of the same material as the primer layer for fixing the reversible thermosensitive color changing layer to a part of the inner surface or the outer surface. Or a container for cooking. 3. A cooking container according to claim 1 or 2, comprising a container body having an open upper surface, and a lid closing the opening of the container body. 4. The cooking container according to claim 3, wherein the reversible thermosensitive color changing layer is provided on the lid.

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