JP2001171642A - Heat insulation container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a superior heat insulation container from which the heat of a content is hard to be transmitted when any spot of a body of the container is held by hands. SOLUTION: A heat insulation container is constituted of an upwardly widening paper cut 10 with an outside face curling section 13 formed on the upper opening edge and an upwardly widening paper outer cylinder 20 with an inside facing curling section 22 with both of its upper section and lower section open and formed on the lower opening edge, and an expansion section 14 protruded outward is formed on the circumferential direction on the upper section of the body section 11 of the paper cup main body 10, and the paper cut main body 10 is covered with the outer cylinder 20 and the upper end of the outer cylinder 20 is brought into contact with the inside of the outside facing curling section 13 of the paper cup main body 10, while the outside facing curling section 22 of the outer cylinder 20 is bonded on the lower section of the body section 21 of the paper cup main body 10 by a paste to integrate the cup main body with the outer cylinder. A heat insulation clearance is formed all over the cup main body at a given interval to form the superior container hard to transmit the heat of the content when any spot of the body is held by hands.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field 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 insulating properties which can be poured into hot water and eaten as it is.

[0002]

2. Description of the Related Art In general, plastic containers such as expanded polystyrene have been widely used as this kind of cup-shaped heat-insulating container. As an alternative, there has been proposed a heat insulating container made of paper in which a body portion is doubled to form a heat insulating space as seen in Japanese Utility Model Application Laid-Open No. 4-45212.

[0003]

The heat-insulating container described in the prior art disclosed in Japanese Utility Model Laid-Open No. 4-45212 has a simple structure in which a normal paper cup is combined with a bottomless outer cylinder having a different taper. Thus, there is an advantage that a cup having an insulating effect can be obtained. And since the space | gap for heat insulation goes down, it becomes large, and shows a favorable heat insulation effect by normal holding. However, there is a problem that if the state of holding the upper portion for a long time lasts for a long time, there is no or a small space for exhibiting the heat insulating effect, and the space gradually becomes hot.

[0004] The present invention has been made to solve the above problems, and has as its object the following.
It is an object of the present invention to provide an excellent heat-insulating container in which the heat of the content is hardly transmitted even when the user holds the body at any place.

[0005]

In order to achieve the above-mentioned object, a heat-insulating container according to the present invention comprises an upwardly expanding paper cup body having an outwardly curled portion at an upper opening edge, and an upper and lower opening. The paper cup comprises an upwardly extending paper outer cylinder having an inward curl portion at the lower opening edge, and an enlarged portion protruding outward is provided above the body of the paper cup body in the circumferential direction. Cover the tube and make the upper end of the outer tube abut the inside of the outward curl part of the paper cup body, and glue the inward curl part of the outer tube below the body of the paper cup body with glue to unite the two. And a gap is formed between the paper cup body and the outer cylinder.

[0006]

Next, embodiments of the present invention will be described with reference to some examples.

FIG. 1 shows an example of a heat insulating container according to the present invention, in which the left half and the right half are schematically shown in a front view and a sectional view, respectively. It is configured by combining a main body 10 and a hollow cylindrical outer cylinder 20 that is open both above and below.

The paper cup body 10 is made of paper coated with a synthetic resin such as polyethylene on the inner surface or the inner and outer surfaces thereof. Like a normal paper cup, the paper cup body 10 has a circular shape below the body 11 in which a fan-shaped blank is rolled. An outer curl portion 13 is formed at the upper opening edge while the bottom plate 12 is wound up. Further, an enlarged portion 14 protruding outward is provided above the body portion 11. In the illustrated example, the enlarged portion 14 is constituted by the step portion a. In the middle of the body portion 11 of the paper cup body 10, a reinforcing rib 15 formed of a circumferentially projecting portion projecting outward is formed. Note that these enlarged portions 14 and reinforcing ribs 15 are
Before assembling the outer cylinder 20 with the outer cylinder 20, the paper cup body 10 is formed using a male mold and a female mold.

On the other hand, the hollow cylindrical outer cylinder 20 is made of a single piece of paper or a fan-shaped paper coated on one or both sides with a synthetic resin such as polyethylene. 22 are formed. Here, both the paper cup main body 10 and the outer cylinder 20 are upwardly expanded, and the outer cylinder 20 has a taper whose trunk 21 is slightly wider than the trunk 11 of the paper cup main body 10,
Further, in the illustrated example, the upper end portion of the outer cylinder 20 is bent in a tapered shape in a direction in which the outer cylinder 20 closes inward over the entire circumference, and the leading end of the outer cylinder 20 contacts the inside of the outward curl portion 13 of the paper cup body 10. Has become. Note that this upper end portion 23
Is not limited to a tapered shape, and may be bent in a curved state.

Then, the outer cylinder 20 having the above-described configuration is put over the paper cup body 10 and inserted, and the tip of the upper end portion 23 of the outer cylinder 20 is brought into contact with the inside of the outward curl portion 13 of the paper cup body 10 or bites into it. The inward curl portion 22 of the outer cylinder 20 is adhered to the lower portion of the body 11 of the paper cup body 10 by means of an emulsion adhesive or the like previously applied to the outer peripheral surface of the body near the lower portion of the paper cup body 10. Are integrated to form the heat-insulating container C shown in FIG.

In the heat-insulating container C having the above-described configuration, a gap is formed between the body 11 of the paper cup body 10 and the body 21 of the outer cylinder 20, and the gap serves as a heat insulating function. In addition, since the enlarged portion 14 that protrudes outward is provided above the body portion 11 of the paper cup body 10 in the circumferential direction, voids are 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 11 is prevented from being transmitted to the outer body 21 over a wide range. It doesn't get hot even if you grab it and hold it. Further, in the above example, since the reinforcing rib 15 formed of a circumferentially protruding portion projecting to the outer surface is formed on the body 11 of the paper cup main body 10, the reinforcing rib 15 increases the strength of the paper cup main body 10. With the outer cylinder 20
Of the paper cup body 10 and the body 21 of the outer cylinder 20 are narrow when the body 21 of the paper cup body 10 and the body 21 are pressed by hand. Is prevented.

The outer cylinder 20 has a product name, a picture, and the like printed on the surface thereof, and this printing is performed on the raw material. Then, a blank having a fan shape is formed by punching the printed web, and the blank is rolled and adhered to the body, and an inward curl portion 22 is formed at a lower opening edge to form an outer cylinder 20.
Is formed. Here, although there is also a meaning of protecting the printed pattern and the like, in order to easily curl the paper, an OP varnish is usually printed on the outermost layer at the time of printing the raw material. But,
Since this OP varnish repels the emulsion adhesive, the inward curl portion 22 of the outer cylinder 20 cannot be bonded to the lower portion of the body of the paper cup body 10. It is conceivable to use an adhesive other than an emulsion adhesive.However, due to problems with heat resistance and odor, and because of the ease of handling, use the same emulsion adhesive that is currently used for body sticking. It is desired to do.

In order to achieve both curling and gluing, the OP varnish 24 has a pattern as shown in FIG.
Is used. That is, the outer cylinder 20
The OP varnish 24 is printed in a pattern excluding a part inside the inward curl portion 22 of FIG. In the pattern illustrated in FIG. 2, a rectangular uncoated portion 25 is regularly left along the lower end of the blank B. Actually, the emulsion adhesive is applied around the outer periphery of the paper cup body 10 and the outer cylinder 20 is put thereon, so that the adhesive can be adhered if at least a part not applied is present. Therefore, the pattern of the uncoated portion may be arbitrary, and it is not necessary to leave the pattern uniformly over the entire circumference as shown in FIG.
It is sufficient if there is an uncoated portion of the OP varnish in a portion inside the inward curl portion at 0. In the figure, reference numeral 26 denotes a body sticking portion, where the OP varnish is naturally not applied.

As described above, instead of leaving the uncoated portion of the OP varnish, the following means may be taken. That is,
The OP varnish is applied to the entire surface except for the body sticking portion, and the inside of the inward curl portion is scratched by half cutting or shaving. The scratch may be provided evenly over the entire portion of the paper cup body 10 that comes into contact with the outer surface of the body portion 11, or may be provided only on a part thereof. If such flaws are formed, the emulsion adhesive penetrates into the paper of the outer cylinder 20 through the flaws, so that the inward curl portion 22 of the outer cylinder 20 is bonded to the outer surface of the body 11 of the paper cup body 10. You can do it.

FIG. 3 shows a modification of the heat insulating container shown in FIG. 1. 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 by the surface b is provided.

FIG. 4 shows another modification of the heat insulating container shown in FIG. 1. 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 by the curved surface c is provided.

FIG. 5 shows another modification of the heat insulating container shown in FIG. 1. The heat insulating container C shown in FIG. 5 has substantially the same structure as that shown in FIG. However, the upper end portion of the outer cylinder 20 is not bent in a tapered shape in a direction in which it is closed inward over the entire circumference, and remains straight.

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 by the surface b is provided.

FIG. 7 shows another modification of the heat insulating container shown in FIG. 5. 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 by the curved surface c is provided.

The heat-insulating container of the present invention may use an outer cylinder made of paperboard embossed so that characters and patterns to be printed are raised outward to form a convex portion. The convex portion need not be formed for all characters and patterns, but may be formed only for characters and patterns to be emphasized. The heat-insulating container having such a configuration exhibits the same heat-insulating effect as the heat-insulating container C in FIG. 1, but the heat-insulating effect is particularly large in the convex portion because the gap is wide.

Further, the heat insulating container of the present invention may use an outer cylinder made of paperboard obtained by performing fine embossing on the entire outer surface. The heat-insulating container having such a structure exhibits the same heat-insulating effect as the heat-insulating container C of FIG. 1, but in addition to exhibiting the heat-insulating effect by the gap between the paper cup body and the outer cylinder, the surface of the outer cylinder also It is easy to hold due to the fine irregularities, and it is difficult for heat to be transmitted to the hands, so that the heat insulation effect as a whole is more excellent. The uneven pattern by embossing may be formed over the entire surface of the body portion of the outer cylinder, or a part in which the uneven pattern is not formed may be partially left. For example, a band may be left above and below the torso in consideration of the area held by the hand, or a name part may be left in a pattern in consideration of the design.

[0022]

The heat-insulating container according to the present invention has an upwardly-opening paper cup body having an outwardly curled portion at an upper opening edge, and an upwardly-expanding paper cup body which is open at both upper and lower sides and has an inwardly curled portion at a lower opening edge. A paper cup outer cylinder is provided, and an enlarged portion protruding outward is provided in the circumferential direction above the body of the paper cup main body, and the upper end of the outer cylinder is placed on the paper cup main body by covering the outer cylinder on the paper cup main body. It is formed by abutting the inside of the outward curl portion and gluing the inward curl portion of the outer cylinder to the lower part of the body of the paper cup body with glue to unite the two and forming a gap between the paper cup body and the outer cylinder. Is formed, so that thermal insulation gaps are formed at a certain interval over a wide range from the lower part to the upper part of the trunk, so that any part of the trunk can be held by hand. The heat of the contents is difficult to transfer And excellent thermal insulation that.

Further, by adopting a configuration in which the upper end portion of the outer cylinder is bent in a direction in which it is closed inward over the entire circumference, the gap is increased, and the heat insulating effect is further improved.

An OP varnish is printed on the surface except for a part inside the inward curl portion of the outer cylinder, or a scratch is formed on the inside of the inward curl portion of the outer cylinder. , The inward curl of the outer cylinder can be adhered to the outer surface of the body of the paper cup body to integrate them, even if an emulsion adhesive is used.

[Brief description of the drawings]

FIG. 1 shows an example of a heat insulating container according to the present invention.
It is a schematic block diagram which shows a left half and a right half by a front view and a sectional view, respectively.

FIG. 2 is an explanatory view showing a coated portion of an OP varnish in a blank of an outer cylinder.

FIG. 3 is a schematic configuration diagram showing a modified example of the heat insulating container shown in FIG. 1 and showing a left half and a right half in a front view and a sectional view, respectively.

FIG. 4 is a schematic configuration diagram showing another modified example of the heat insulating container shown in FIG. 1, showing a left half and a right half in a front view and a cross-sectional view, respectively.

FIG. 5 is a schematic configuration diagram showing still another modified example of the heat insulating container shown in FIG. 1 and showing a left half and a right half in a front view and a sectional view, respectively.

6 is a schematic configuration diagram showing a modified example of the heat insulating container shown in FIG. 5, and 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 sectional view, respectively.

[Explanation of symbols]

 C Heat insulating container 10 Paper cup body 11 Body 12 Bottom plate 13 Outward curl part 14 Enlarged part 15 Reinforcement rib 20 Outer cylinder 21 Body part 22 Inward curl part 23 Upper end part 24 OP varnish 25 Uncoated part 26 Body sticking part a step Part b Inclined surface c Curved surface

Continuing on the front page (72) Katsuhiro Yamagata 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Inventor Kazuhiro Hidaka 1-1-1-1, Ichigaga-cho, Shinjuku-ku, Tokyo No. Within Dai Nippon Printing Co., Ltd. (72) Inventor Yukihiro Shioya Saitama Prefecture, Sayama City, Ota, 591, Kamihirose, 10 Large Inside Nippon Cup Co., Ltd. Nippon Cup Co., Ltd. (72) Inventor Yasuhiro Kushida Saitama Prefecture, Sayama City, 591 Kamihirose, O10 F-term (reference) 3E067 AA11 AA19 AB01 BA07A BB01A BB14A BB24A BB26A BC03A EE02 FA01 GA12

Claims (4)

[Claims] 1. An upwardly expanding paper cup body having an outwardly curled portion at an upper opening edge, and an upwardly expanding paper outer cylinder having an upwardly and downwardly opening curled portion open at both upper and lower sides. An enlarged portion protruding outward is provided in the circumferential direction above the body of the paper cup main body, and the outer cylinder is put on the paper cup main body, and the upper end portion of the outer cylinder is applied to the inside of the outward curl portion of the paper cup main body. It is formed by gluing the inward curl part of the outer cylinder to the lower part of the body of the paper cup body with glue and integrating them together, and a gap is formed between the paper cup body and the outer cylinder. And a heat insulating container. 2. The heat-insulating container according to claim 1, wherein an upper end portion of the outer cylinder is bent in a direction to close inward over the entire circumference. 3. The heat insulating container according to claim 1, wherein an OP varnish is printed on a surface of the outer cylinder except for a part inside the inward curl portion. 4. The heat-insulating container according to claim 1, wherein a flaw is formed in a portion of the outer cylinder that is located inside the inward curl portion.