JP4973121B2 - Insulated container - Google Patents

Description

  The present invention relates to a heat insulating container in which an outer peripheral surface of a body portion of a container body is covered with a covering member.

  2. Description of the Related Art As a heat insulating container suitable for injecting a high-temperature liquid such as hot water, a container in which a cylindrical outer cylinder is covered on the outer peripheral surface so as to cover the body part of the container body is widely known (Patent Document 1). Also known is a heat-insulated container in which a so-called one-stage cardboard, in which a flat liner paper is pasted on one side of a corrugated paper that curves in a wave shape, is pasted on the outer peripheral surface of the trunk of the container body so as to cover the trunk. (Patent Document 2).

Japanese Utility Model Publication No. 4-45212 Japanese Utility Model Publication No. 4-45215

  In the conventional heat insulating containers described in these documents, the covering member that covers the outer peripheral surface of the trunk portion is configured as a single member in order to ensure heat insulating properties. For this reason, for example, when there is a request to increase the heat insulation on the upper side of the heat insulation container from the lower side, or vice versa, the entire insulation of the covering member is required. It is necessary to change to a member excellent in heat insulation. That is, since the conventional heat insulating container has a single covering member, the properties such as the heat insulating property of the covering member cannot be made different between the upper part and the lower part of the covering member according to the usage form of the heat insulating container. .

  Then, an object of this invention is to provide the heat insulation container which can make those properties differ in the upper part and lower part of a coating | coated member according to the form of a heat insulation container.

  Hereinafter, the heat insulating container of the present invention will be described. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.

The heat insulation container of the present invention includes a container body having a body portion, and the heat insulation container in which the outer peripheral surface of the body portion of the container body is covered with a covering member. An upper covering member and a lower covering member are provided , and the heat insulating property of the upper covering member and the heat insulating property of the lower covering member are different from each other, and the boundary between the upper covering member and the lower covering member is The vertical dimension of each of the upper covering member and the lower covering member is set so that the upper covering member and the lower covering member are positioned within a range of 1/5 to 1/2 of the trunk portion from the upper end of the trunk portion, The member is configured such that its heat insulating property is higher than the heat insulating property of the lower covering member, and each of the upper end and the lower end of the lower covering member is provided with an inwardly curled portion , Solve the above-mentioned problems.

According to this heat insulating container, since the upper covering member and the lower covering member provided as the covering member are separated, the properties of the upper covering member and the properties of the lower covering member can be easily made different. .

As usage of the adiabatic vessel, hot liquid hot water or the like is injected into the container body, when the form as having a heat-insulating container in which the high temperature liquid is injected user with bare hands is assumed, the hot liquid The heat insulating property of the upper covering member and the heat insulating property of the lower covering member may be made different from each other according to the set position of the appropriate amount position. The vertical dimension of each of the upper and lower covering members so that the boundary between the upper and lower covering members is located within the range of 1/5 to 1/2 of the trunk portion from the upper end of the trunk portion. And the upper covering member is configured such that the heat insulating property of the upper covering member is higher than the heat insulating property of the lower covering member. It is good to be .

  According to these aspects, since the heat insulation of the part which a user has with a bare hand becomes comparatively high, the heat which a user feels when holding a heat insulation container can be reduced. Thus, since the member excellent in heat insulation can be arrange | positioned in an effective place, the usage-amount of the member can be reduced rather than the case where a coating | coated member is comprised with the single member excellent in heat insulation. In addition, since the lower portion of the upper member is covered with the lower member without exposing the body portion, the minimum heat insulation is ensured. That is, it is possible to provide a heat-insulating container that is free from use material.

  A member excellent in heat insulation applied to the upper covering member or the lower covering member can be appropriately selected. For example, as a member having excellent heat insulating properties, embossed paper with irregularities, corrugated paper that curves in a wavy shape, single corrugated paper with a flat liner paper pasted on one side of corrugated paper, foam material on the surface The provided foamed paper or the like can be used. When either one of the upper covering member and the lower covering member is formed of such a member, it is sufficient to use ordinary paper for either one.

The heat insulation container of the present invention includes a container body having a body portion, and the heat insulation container in which the outer peripheral surface of the body portion of the container body is covered with a covering member. An upper covering member and a lower covering member are provided, and the electromagnetic wave transmittance of the upper covering member and the electromagnetic wave transmittance of the lower covering member are different from each other, and each of an upper end and a lower end of the lower covering member Is provided with an inwardly curled portion, thereby solving the above-described problems. For example, when the form used for accommodating the predetermined content heated with electromagnetic cooking appliances, such as a microwave oven, is assumed, the transmittance of the electromagnetic waves of the upper covering member and the electromagnetic waves of the lower covering member The transmittance can be made different from each other. Depending on the contents, it may be required to heat only the part that needs to be heated and limit the heating of the part that does not. In order to reduce the electromagnetic wave transmittance of either the upper covering member or the lower covering member, it is realized by providing a shielding member such as an aluminum foil on either the upper covering member or the lower covering member. Can do.

  As described above, according to the heat insulating container of the present invention, since the upper covering member and the lower covering member provided as the covering member are separated, the properties of the upper covering member and the properties of the lower covering member are Can be made different depending on the usage of the heat insulating container.

FIG. 1 shows a paper cup as a heat insulating container according to the present invention, and FIG. 2 shows a partial cross section along the line II-II in FIG. As for the use state of the paper cup 1, it is assumed that a user holds the paper cup 1 into which an appropriate amount of a high-temperature liquid such as hot water is injected and the liquid is injected to an appropriate amount position. The paper cup 1 is configured by combining a cup body 2 as a container body and an exterior paper 3 as a covering member covering the outer peripheral surface thereof. The outer covering paper 3 includes an upper outer covering paper 4 as an upper covering member and a lower outer covering paper 5 as a lower covering member which are separated into two upper and lower parts and have different heat insulation properties. The cup body 2 is formed in a substantially truncated cone shape having a body portion 21 and a bottom portion 22. A curled portion 23 is formed on the upper end of the body portion 21 toward the outside. The body portion 21 is configured by overlapping and bonding both end portions of a blank having a predetermined contour, and a ridge portion 21b indicating an appropriate amount position of the injected liquid is formed on the inner peripheral surface of the body portion 21. It extends along the circumferential direction of the body portion 21 in a state of protruding inward of the body 21. For example, paper having a basis weight of 150 to 400 g / m ² is used as the material of the cup body 2, and at least the inner surface thereof is covered with a coating layer (for example, a polyethylene layer) for enhancing heat resistance and water resistance.

  The upper exterior paper 4 and the lower exterior paper 5 are provided to improve the heat insulation of the paper cup 1 and are arranged adjacent to each other. The upper exterior paper 4 and the lower exterior paper 5 may abut each other and be arranged without a gap, or there may be a slight gap. The heat insulation property of the upper exterior paper 4 is higher than the heat insulation property of the lower exterior paper 5, and the vertical dimension of each of the upper exterior paper 4 and the lower exterior paper 5 is lower than that of the upper exterior paper 4. The boundary B with the side exterior paper 5 is set so as to be located within a range of 1/5 to 1/2 of the trunk portion 21 from the upper end of the trunk portion 21. In the illustrated form, the boundary B is set below the projecting portion 21b indicating an appropriate amount position. There are many occasions where the user holds the paper cup 1 in the place where the upper exterior paper 4 is provided. Therefore, it is required to improve heat insulation so that the user can easily hold the paper cup 1 when a high-temperature liquid is poured into the paper cup 1 to an appropriate amount position.

  For this reason, as the material of the upper exterior paper 4, a corrugated paper having a flat liner paper 4b attached to one surface of a corrugated paper 4a curved in a wave shape is used. The upper exterior paper 4 is in a state where both ends of a fan-shaped blank (not shown) made of single-stage cardboard is abutted, and the corrugated portion 21 of the cup body 2 with the wavy curved surface facing the outer peripheral side of the paper cup 1. It is pasted with an adhesive. Since single-stage cardboard is used as the material of the upper exterior paper 4, it is easy to bend into a cylindrical shape as compared with the case of using normal cardboard paper in which corrugated paper is sandwiched between two liner papers. Therefore, the manufacture of the upper exterior paper 4 is facilitated. Note that the upper exterior paper 4 can be attached to the body portion 21 so that the front and back of the illustrated form are reversed, that is, the smooth surface of the liner paper 4 b faces the outer peripheral side of the paper cup 1. In this case, since the surface of the upper exterior paper 4 becomes smooth, it becomes easy to print various information on the upper exterior paper 4.

For example, a paper having a basis weight of 150 to 400 g / m ² is used as the material of the lower exterior paper 5 and is formed into a cylindrical shape by bonding both ends of a blank (not shown) made of the paper. Inwardly curled portions 51, 52 are provided at the upper end and the lower end of the lower exterior paper 5, respectively, and are affixed to the body portion 21 of the cup body 2. A gap G is formed between the cup body 2 and the lower exterior paper 5 by the curled portions 51 and 52. Therefore, the lower exterior paper 5 ensures heat insulation to the extent that the temperature drop of the injected liquid can be suppressed although it is inferior to the heat insulation of the upper exterior paper 4.

  Next, specific examples of the paper cup described above will be described.

<Example 1>
Prepare a paper cup base paper by coating polyethylene to a thickness of 25 μm by extruding polyethylene onto paper with a basis weight of 280 g / m ² , punching this paper cup base paper into a blank of a predetermined shape, and pasting both ends of the blank together to make the cup body A torso was created. On the other hand, the bottom part of the cup body was prepared by punching a blank of a predetermined shape from a paper cup base paper obtained by extruding polyethylene onto a paper having a basis weight of 255 g / m ² and coating it to a thickness of 25 μm by lamination. Next, a cup body was manufactured by combining the trunk and the bottom. The upper exterior paper is rounded into a cylindrical shape by punching a piece of cardboard with a basis weight of 150 g / m ² into a blank of a predetermined shape, and then facing the both sides of the blank so that the uneven surface of the cardboard is facing outward. And adhered to the body of the cup body. The lower exterior paper is formed by punching out a paper having a basis weight of 310 g / m ² into a blank having a predetermined shape, and then bonding both ends of the blank to form a cylinder, and then forming an inwardly curled portion at the upper and lower ends. Then, the upper end of the paper was fitted into the cup body so as to abut the lower end of the upper exterior paper, and the paper cup was bonded to the body.

<Example 2>
A paper cup similar to that of Example 1 was manufactured except that the upper and lower outer papers of Example 1 were turned upside down, that is, the smooth surface of the corrugated cardboard was placed outside.

<Comparative example>
In the cup body manufactured under the same conditions as the above embodiments, an inwardly curled portion is formed only on the lower end and made of the same material as the lower exterior paper according to each of the above embodiments, and the cup body is covered. A paper cup was made by fitting an exterior paper formed to a dimension that was possible.

<Temperature measurement test>
In order to compare the heat insulation between the paper cup according to each example and the paper cup according to the comparative example, a temperature measurement test was performed by the following method. FIG. 3 is an explanatory diagram for explaining the contents of the temperature measurement test. As shown in FIG. 3, the paper cup 100 to be tested is placed on a horizontal support base 101, and a load meter 102 is placed at a substantially central position of the body of the paper cup 100, and a contact thermometer is placed at a position 25 mm from the upper end of the paper cup 100. 103 is installed. Then, boiling hot water Hw is poured up to a position 10 mm from the upper end of the paper cup 100, and then the upper portion is closed with the lid member 104, and then the opposite side of the load meter 102 so that the load meter 102 maintains a state of 200 g. The contact thermometer 103 is pressed against the body of the paper cup 100 in the horizontal direction. From this state, the temperature of the body part of the paper cup 100 is measured every 5 minutes for 5 minutes. The maximum of the measured values was taken as the measurement result to be evaluated.

  As a result of the above tests, the measurement result in Example 1 was 65.7 ° C., and the measurement result in Example 2 was 65.2 ° C. In the comparative example, the measurement result was 78.7 ° C. As a result, each example has higher heat insulating properties than the comparative example, and thus it has been clarified that the heat felt by the user with his bare hands can be reduced compared to the comparative example.

  This invention is not limited to the above form, It can implement with a various form within the range of the summary of this invention. The above-described paper cup 1 is set such that an appropriate amount position of a high-temperature liquid such as hot water is biased to the upper part of the cup, so that the upper exterior paper 4 is a single cardboard and the lower exterior paper 5 is a normal paper, respectively. Although configured, the upper exterior paper 4 may be composed of normal paper and the lower exterior paper 5 may be composed of single cardboard according to the appropriate amount position of the liquid. Further, the vertical dimension of each of the upper exterior paper 4 and the lower exterior paper 5 may be set as appropriate as long as the trunk portion 21 is covered with these exterior papers 4 and 5. It is sufficient that the heat insulating property of either the upper paper 4 or the lower paper 5 is higher or lower than the heat insulating property of the other, and there is no limitation on the material used for improving the heat insulating property. For example, in addition to the above-described single cardboard, embossed paper with irregularities, corrugated paper that curves in a wavy shape, foamed paper with a foam material provided on the surface, and the like can also be employed as such a material.

  The above-described paper cup 1 is assumed to have a bare cup of paper cup 1 in which a proper amount of high-temperature liquid such as hot water is injected and the liquid is injected to an appropriate amount position. The present invention may be implemented with a configuration suitable for the above. For example, when a use form used for accommodating a predetermined content heated by an electromagnetic cooking appliance such as a microwave oven is assumed, depending on the content, only the portion that needs to be heated is heated, It may be required to limit the heating of the parts that are not. As such contents, it is assumed that a portion requiring heating is disposed on the lower side of the container, and a portion which does not require heating or a portion which should be limited to heating is disposed on the upper side of the container. In such a case, the present invention can be implemented in the form shown in FIGS. FIG. 4 shows a paper cup as a heat insulating container according to another embodiment of the present invention, and FIG. 5 shows a partial cross section along the line V-V in FIG. In these drawings, the same reference numerals are given to the same components as those in FIGS. 1 and 2 and the description thereof is omitted.

  The paper cup 20 shown in FIGS. 4 and 5 is configured such that the electromagnetic wave transmittance of the upper exterior paper 40 as the upper covering member is lower than the electromagnetic wave transmittance of the lower outer paper 5. As shown in FIG. 5, the upper exterior paper 40 is configured such that a shielding member 41 such as an aluminum foil is sandwiched between two liner papers 42. Since the transmission of electromagnetic waves is restricted by the shielding member 41, when the above-described contents stored in the paper cup 20 are cooked in a microwave oven, the upper heating of the cup body 2 is restricted, and the lower heating is performed as usual. Done. Thereby, it becomes possible to obtain a favorable cooking result as the whole contents.

  In addition, by providing the shielding member 41 shown in FIG. 5 on the upper exterior paper 4 or the lower exterior paper 5 of the paper cup 1 shown in FIGS. 1 and 2, the heat insulation and electromagnetic wave transmittance of the paper cup 1 are different. It is also possible to make it.

The figure which showed one form of the paper cup as a heat insulation container of this invention. The figure which showed the partial cross section along the II-II line | wire of FIG. Explanatory drawing explaining the content of the temperature measurement test. The figure which showed the other form of the paper cup as a heat insulation container of this invention. The figure which showed the partial cross section along the VV line | wire of FIG.

Explanation of symbols

1,20 Paper cup (insulated container)
2 cup body (container body)
3 exterior paper (coating material)
4, 40 Upper exterior paper (upper covering member)
5 Lower exterior paper (lower cover)
21 Torso

Claims (2)

In a heat insulating container comprising a container body having a body part, and an outer peripheral surface of the body part of the container body covered with a covering member,
As the covering member, an upper covering member and a lower covering member separated into two upper and lower parts are provided ,
The heat insulating property of the upper covering member and the heat insulating property of the lower covering member are different from each other,
The upper covering member and the lower covering member are arranged such that a boundary between the upper covering member and the lower covering member is located within a range of 1/5 to 1/2 of the body portion from the upper end of the body portion. Each vertical dimension is set,
The upper covering member is configured such that its heat insulating property is higher than the heat insulating property of the lower covering member,
An insulating container , wherein an inwardly curled portion is provided at each of an upper end and a lower end of the lower covering member . In a heat insulating container comprising a container body having a body part, and an outer peripheral surface of the body part of the container body covered with a covering member,
As the covering member, an upper covering member and a lower covering member separated into two upper and lower parts are provided,
The electromagnetic wave transmittance of the upper covering member and the electromagnetic wave transmittance of the lower covering member are different from each other ,
Insulated container in each of the upper and lower ends of the lower cover member, characterized in that the curled portion inwardly is provided.

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