JP4189941B2 - 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]
Generally, plastic cups such as expanded polystyrene have been frequently used as this type of cup-shaped heat-insulating containers. 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, a heat-insulating container according to the present invention includes an upwardly expanding paper cup body having an outwardly curled portion at an upper opening edge, and an inwardly curled portion at the lower opening edge. The paper cup main body is provided with an enlarged portion protruding outwardly in the circumferential direction above the body portion of the paper cup body, and the inwardly curled portion of the outer cylinder is inside thereof. The OP varnish is printed on the surface except for a part of the case, and the outer cylinder is put on the paper cup body so that the upper end portion of the outer cylinder is in contact with the inner side of the outward curl portion of the paper cup body and the inward of the outer cylinder. It is formed by adhering the curled part to the lower part of the body part of the paper cup body with an emulsion-based adhesive and integrating both, and a gap is formed between the paper cup body and the outer cylinder. .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with some examples.
[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 front view and a cross-sectional view, respectively. The heat-insulating container C in FIG. It is configured by combining a hollow cylindrical outer cylinder 20 that is open both upward and downward.
[0008]
The paper cup main body 10 is made of paper whose inner surface or both inner and outer surfaces are coated with a synthetic resin such as polyethylene. Like a normal paper cup, a circular bottom plate 12 is provided below a body portion 11 in which a fan-shaped blank is rolled. The outer curled portion 13 is formed at the upper opening edge while being tightened, and an enlarged portion 14 protruding outward is provided above the trunk portion 11. In the illustrated example, the enlarged portion 14 is constituted by a stepped portion a. Further, in the middle of the body portion 11 of the paper cup body 10, a reinforcing rib 15 is formed which is a convex portion in the circumferential direction protruding outward. These enlarged portions 14 and reinforcing ribs 15 are formed on the paper cup body 10 using a male mold and a female mold before the paper cup body 10 and the outer cylinder 20 are combined.
[0009]
On the other hand, the hollow cylindrical outer cylinder 20 is made of a sheet of paper or fan-shaped paper coated on one or both sides with a synthetic resin such as polyethylene, and an inwardly curled portion 22 is formed at the lower opening edge of the body portion 21. Has been. Here, both the paper cup main body 10 and the outer cylinder 20 are expanded upward, but the outer cylinder 20 has a taper in which the body portion 21 has a hem slightly expanded from the body portion 11 of the paper cup main body 10. In this example, the upper end portion of the outer cylinder 20 is bent in a taper shape so as to close inward over the entire circumference, and the tip thereof is sized to abut on the inner side of the outward curled portion 13 of the paper cup body 10. Yes. The bending of the upper end portion 23 is not limited to the tapered shape, and may be bent in a curved state.
[0010]
Then, the outer cup 20 having the above-described configuration is put on the paper cup main body 10 and inserted, and the tip of the upper end portion 23 of the outer cylinder 20 is brought into contact with or bite into the inside of the outward curled portion 13 in the paper cup main body 10. more emulsion type adhesive applied to the body portion outer peripheral surface near the bottom of the paper cup body 10, be an integral both to adhere the inwardly curled portion 22 of the outer tube 20 below the body portion 11 of the paper cup body 10 Thus, the heat insulating container C shown in FIG. 1 is formed.
[0011]
In the heat insulating container C having the above configuration, a gap is formed between the body portion 11 of the paper cup body 10 and the body portion 21 of the outer cylinder 20, and this space portion performs a heat insulating function. In addition, since the enlarged portion 14 projecting outward is provided in the circumferential direction above the body portion 11 of the paper cup body 10, a gap is formed at a certain interval from below to the enlarged portion 14. Therefore, when hot water is put into the heat insulating container C, the heat of the inner body part 11 is prevented from being transmitted to the outer body part 21 over a wide range, and any place that is normally gripped by this type of container can be prevented. Even if you hold it, it won't get hot. Further, in the above example, since the reinforcing rib 15 is formed on the body portion 11 of the paper cup main body 10 and is formed of a convex portion in the circumferential direction protruding outward, the strength of the paper cup main body 10 is increased by the reinforcing rib 15. At the same time, since the body portion 21 of the outer cylinder 20 serves as a support so as not to bend inwardly, the body portion 11 of the paper cup main body 10 and the body portion 21 of the outer tube 20 when the force is applied by hand. It is prevented that the space | gap between becomes narrow.
[0012]
The outer cylinder 20 has a product name, a pattern, and the like printed on its surface, and this printing is performed on the original fabric. A fan-shaped blank is formed by punching out the printed original fabric, and the blank is rolled and pasted on a cylinder, and the inwardly curled portion 22 is formed at the lower opening edge to form the outer cylinder 20. . Here, there is a meaning to protect the printed pattern and the like, but in order to easily curl the paper, OP varnish is usually printed on the outermost layer when printing the original fabric. However, since this OP varnish repels an emulsion adhesive, the inwardly curled portion 22 of the outer cylinder 20 cannot be adhered to the lower portion of the body portion of the paper cup body 10. It is conceivable to use an adhesive other than the emulsion type, but from the viewpoint of heat resistance and odor, and from the viewpoint of ease of handling, the same emulsion type adhesive that is currently used for body bonding is used. It is desirable to do.
[0013]
Therefore, in order to achieve both curling ease and gluing, a blank B on which the OP varnish 24 is printed with a pattern as shown in FIG. 2 is used. That is, the OP varnish 24 is printed in a pattern excluding a part of the outer cylinder 20 that is inside the inwardly curled portion 22. The pattern illustrated in FIG. 2 regularly leaves a rectangular uncoated portion 25 along the lower end of the blank B. Actually, the emulsion-type adhesive is applied around the outer periphery of the paper cup body 10 and the outer cylinder 20 is covered therewith, so that it can be bonded if there is at least part of the uncoated part. Therefore, the pattern of the uncoated portion may be arbitrary, and it is not necessary to leave it uniformly over the entire circumference as shown in FIG. 2. In short, the OP is applied to a part of the outer cylinder 20 that is inside the inwardly curled portion. It is sufficient if there is an uncoated part of varnish. In the figure, reference numeral 26 is a cylinder pasting portion, and of course, no OP varnish is applied.
[0015]
FIG. 3 shows a modification of the heat insulating container shown in FIG. 1, and the heat insulating container C shown in FIG. 3 has substantially the same structure as that shown in FIG. An enlarged portion 14 protruding outward is provided.
[0016]
FIG. 4 shows another modification of the heat insulating container shown in FIG. 1, and the heat insulating container C shown in FIG. 4 has substantially the same structure as that shown in FIG. An enlarged portion 14 protruding outward is provided by c.
[0017]
FIG. 5 shows still another modified example of the heat insulating container shown in FIG. 1. The heat insulating container C shown in FIG. 5 has substantially the same configuration as that shown in FIG. The upper end portion of the cylinder 20 is not bent in a taper shape so as to be closed inward over the entire circumference, and remains straight.
[0018]
FIG. 6 shows a modification of the heat insulating container shown in FIG. 5. The heat insulating container C shown in FIG. 6 has substantially the same structure as that shown in FIG. An enlarged portion 14 protruding outward is provided.
[0019]
FIG. 7 shows another modification of the heat insulating container shown in FIG. 5, and the heat insulating container C shown in FIG. 7 has substantially the same structure as that shown in FIG. An enlarged portion 14 protruding outward is provided by c.
[0020]
Note that the heat insulating container of the present invention may use an outer cylinder formed of paperboard that is embossed so that characters or patterns to be printed float outward and form convex portions. This convex portion need not be formed for all characters and patterns, and may be only the characters and patterns to be emphasized. The heat insulating container having such a configuration exhibits a heat insulating action similar to that of the heat insulating container C of FIG. 1, but the heat insulating action is increased because the gap is wide particularly in the convex portion.
[0021]
Moreover, you may use the outer cylinder formed with the paperboard which gave the fine embossing over the whole surface used as the heat insulation container of this invention. The heat-insulating container having such a configuration exhibits the same heat-insulating action as the heat-insulating container C in FIG. 1, but in addition to exhibiting the heat-insulating effect due to the gap between the paper cup body and the outer cylinder, the surface of the outer cylinder It is easy to hold due to the fine unevenness and heat is not easily transmitted to the hand, so that the overall heat insulating effect is further improved. In addition, the uneven | corrugated pattern by embossing may be formed over the whole surface of the trunk | drum in an outer cylinder, and you may make it the form which left the part which does not form an uneven | corrugated pattern in part. For example, in consideration of the area held by the hand, it may be left in a strip shape above and below the trunk portion, or the name portion may be left in a pattern shape in consideration of the design.
[0022]
【The invention's effect】
The heat-insulating container of the present invention includes an upwardly-spreading paper cup body having an outwardly curled portion at the upper opening edge, and an upwardly-spreading paper-made outer body that is open both upward and downward and has an inwardly curled portion at the downward opening edge. The upper part of the paper cup main body is provided with an enlarged portion protruding outward in the circumferential direction, and the inwardly curled portion of the outer cylinder is on the surface except for a part thereof. The OP varnish is printed, and the paper cup body is covered with an outer cylinder so that the upper end portion of the outer cylinder is brought into contact with the inside of the outward curled portion of the paper cup body, and the inwardly curled portion of the outer cylinder is placed below the trunk portion of the paper cup main body. It is formed by bonding them together with an emulsion adhesive and forming a gap between the paper cup body and the outer cylinder, so that it covers a wide range from the lower part to the upper part of the body part. Heat insulation Since the gap is formed at a certain interval, and is excellent in heat insulating property that heat is not easily transmitted to the contents thereof by hand to any location of the body.
[0023]
Further, by adopting a configuration in which the upper end portion of the outer cylinder is bent in the direction of closing inward over the entire circumference, the gap becomes larger and the heat insulating effect is further improved.
[Brief description of the drawings]
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 front view and a cross-sectional view, respectively.
FIG. 2 is an explanatory diagram for showing a coating portion of OP varnish with a blank of an outer cylinder.
3 shows a modification of the heat insulating container shown in FIG. 1, and is a schematic configuration diagram showing a left half and a right half in a front view and a cross-sectional view, respectively.
4 shows another modification of the heat insulating container shown in FIG. 1, and is a schematic configuration diagram showing a left half and a right half in a front view and a sectional view, respectively.
5 shows still another modification of the heat insulating container shown in FIG. 1, and is a schematic configuration diagram showing a left half and a right half in a front view and a cross-sectional view, respectively.
6 shows a modified example of the heat insulating container shown in FIG. 5, and is a schematic configuration diagram showing a left half and a right half in a front view and a sectional view, respectively.
7 shows another modification of the heat insulating container shown in FIG. 5, and is a schematic configuration diagram showing a left half and a right half in a front view and a cross-sectional view, respectively.
[Explanation of symbols]
C heat insulating container 10 paper cup main body 11 trunk 12 bottom plate 13 outward curled portion 14 enlarged portion 15 reinforcing rib 20 outer cylinder 21 trunk 22 inward curled portion 23 upper end portion 24 OP varnish 25 unapplied portion 26 trunk pasted portion a step Part b Inclined surface c Curved surface

Claims (2)

A paper cup main body having an outwardly curled portion at the upper opening edge, and a paper outer tube having an upwardly extending paper opening at both the upper and lower ends and having an inwardly curled portion at the lower opening edge. An enlarged portion protruding outward is provided in the circumferential direction above the trunk portion, and OP varnish is printed on the surface of the inwardly curled portion of the outer cylinder except for a part of the inner portion, Cover the paper cup body with the outer cylinder and bring the upper end of the outer cylinder into contact with the inside of the outward curled portion of the paper cup body, and adhere the inwardly curled portion of the outer cylinder to the lower portion of the paper cup body with an emulsion adhesive. A heat-insulating container, characterized in that a gap is formed between the paper cup body and the outer cylinder.   The heat insulating container according to claim 1, wherein the upper end portion of the outer cylinder is bent in a direction to close inward over the entire circumference.

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