JP4218776B2 - Heat insulating container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cup-shaped container for storing instant foods such as instant noodles, and more particularly to a container having excellent heat insulation properties that can be poured into hot water and eaten as it is.
[0002]
[Prior art]
In general, as this type of cup-shaped heat-insulating container, plastics such as expanded polystyrene have been frequently used. However, since these become pollution problems when discarded, as an alternative, for example, As seen in Japanese Utility Model Laid-Open No. 4-45212, a paper heat insulating container has been proposed in which a body portion is doubled to form a heat insulating gap.
[0003]
[Problems to be solved by the invention]
The heat insulating container described in Japanese Utility Model Publication No. 4-45212 described in the prior art can obtain a cup having a heat insulating effect by a simple configuration in which a bottomless outer cylinder having a different taper is combined with a normal paper cup. There is an advantage. And since the space | gap for heat insulation becomes so large that it goes below, it will show a favorable heat insulation effect in the normal way of holding. However, there is a problem that if the state of grasping and holding the portion near the upper part continues for a long time, there is no gap or a narrow gap that exhibits a heat insulation effect, and the temperature gradually increases.
[0004]
The present invention has been made in order to solve the above-described problems, and the object of the present invention is to provide excellent heat insulation in which the heat of the contents is not easily transmitted regardless of where the body portion is held by hand. It is to provide a sex container.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the heat insulating container of the present invention is a paper cup body having an outward curled portion at the upper opening edge, and a paper product having both an upper and lower opening and an inward curled portion at the lower opening edge. The outer surface of the paper cup body is provided with a discontinuous outward stepped portion in the circumferential direction above the body portion of the paper cup body. The inwardly curled portion of the lower opening edge is formed by uniting the two in a state where it does not adhere to the outer peripheral surface of the side wall of the paper cup body, and a gap of a predetermined interval is formed between the paper cup body and the outer cylinder. It is characterized by being formed across the direction.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0007]
FIG. 1 shows an example of a heat insulating container according to the present invention, and is a schematic configuration diagram showing a left half and a right half in a sectional view and a partially cutaway view, respectively. A heat insulating container 1 shown in FIG. 1 includes a paper cup main body 2 and a hollow cylindrical outer cylinder 3 that is open both upward and downward.
[0008]
The paper cup body 2 is made of paper having a synthetic resin such as polyethylene coated on the inner surface or both inner and outer surfaces. Like the normal paper cup, the bottom plate 5 is wound around the lower portion of the body 4, and the outward curling portion is formed on the upper opening edge. 6 is formed, and further, a discontinuous outward step portion 7 is provided above the trunk portion in the circumferential direction. On the other hand, the hollow cylindrical outer cylinder 3 is made of a single sheet of paper or a sheet of one or both sides coated with a synthetic resin such as polyethylene, and has an inwardly curled portion 9 formed at the lower opening edge of the body portion 8. The taper is almost the same as that of the paper cup body 2.
[0009]
Then, the paper cup body 2 is covered with the outer cylinder 3, and the inner surface of the upper opening of the outer cylinder 3 is bonded to the outer peripheral surface of the outward stepped portion 7 of the paper cup body 2 by means such as an emulsion adhesive. Thus, the heat insulating container 1 is formed. In some cases , the portion of the inwardly curled portion 9 formed at the lower opening edge of the outer cylinder 3 may also be adhered to the outer periphery of the lower side wall of the paper cup body 2.
[0010]
In the heat insulating container 1 having the above-described configuration, a gap 10 having a predetermined interval is formed in the vertical direction between the body 4 of the paper cup body 2 and the body 8 of the outer cylinder 3 having substantially the same taper. The part performs a heat insulating action. Therefore, when hot water is put into the heat insulating container 1, the heat of the inner body part 4 is prevented from being transmitted to the outer body part 8, and it does not become hot regardless of where the container is held.
[0011]
Moreover, you may provide the injection | pouring reference line used as the standard at the time of pouring hot water in the trunk | drum 4 of the paper cup main body 2 by forming the protrusion which protrudes in the circumference direction and is an inner surface side or an outer surface side. When the injection reference line is provided in the paper cup main body 2, it is preferable to provide the outward stepped portion 7 above the injection reference line. By setting it as such a structure, it is prevented that the heat | fever of the hot water poured to the injection | pouring reference line is directly transmitted to the trunk | drum 8 of the outer cylinder 3 via the outward step part 7. FIG.
[0012]
【The invention's effect】
The heat insulating container of the present invention comprises a paper cup body having an outwardly curled portion at the upper opening edge, and a paper outer tube having both an upper and lower opening and an inwardly curled portion at the lower opening edge. the barrel above the main body is outwardly stepped portion of the discontinuities provided in the circumferential direction, the upper opening inner surface of the outer tube is bonded to the outwardly stepped portion of the paper cup body is covered with a outer cylinder to the paper cup body, lower The inwardly curled portion of the opening edge is formed by integrating the two without being bonded to the outer peripheral surface of the side wall of the paper cup main body, and a predetermined gap is formed between the paper cup main body and the outer cylinder in the vertical direction. Therefore, the heat of the contents is difficult to be transmitted regardless of where the body part is held by hand.
[Brief description of the drawings]
FIG. 1 shows an example of a heat-insulating container according to the present invention, and is an explanatory view showing a left half and a right half in a sectional view and a partially cutaway view, respectively.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Thermal insulation container 2 Paper cup main body 3 Outer cylinder 4 Body part 5 Bottom plate 6 Outward curl part 7 Outward step part 8 Body part 9 Inward curl part 10 Space | gap

Claims (1)

It consists of a paper cup body having an outward curled portion at the upper opening edge, and a paper outer cylinder having both an upper and lower opening and an inward curled portion at the lower opening edge. Discontinuous outward stepped portions are provided in the direction, and the paper cup main body is covered with the outer cylinder, the upper opening inner surface of the outer cylinder is bonded to the outward stepped portion of the paper cup main body , and the inwardly curled portion of the lower opening edge is A heat insulating property characterized in that it is formed by integrating the two without being bonded to the outer peripheral surface of the side wall of the paper cup body, and a gap of a predetermined interval is formed between the paper cup body and the outer cylinder in the vertical direction. container.

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