JP2000118519A - Heat insulated container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper container with excellent heat insulation which is difficult to transfer the heat of the content even when any part of a body part is held by hand. SOLUTION: In a heat-insulated container 1 which comprises a paper cup body 2 having an outwardly curled part 6 on an upper opening edge and a paper outer cylinder 3 with upper and lower parts opened, and having an inwardly curled part 8 on a lower opening edge, and is formed by housing the outer cylinder 3 over the paper cup body 2, and integratedly attaching an inner surface of an upper opening of the outer cylinder 3 to an outer circumference of a side wall immediately below the outwardly curled part 6 in the paper cup body 2, the outer cylinder 3 is formed of an embossed cardboard so that printed letters and patterns form an outwardly embossed part 9. The heat insulation effect is demonstrated by a gap 10 between the paper cup body 2 and an outer cylinder 3, and the heat insulation effect by the embossed part 9 on the surface of the outer cylinder is also added to realize more excellent heat insulation effect.

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 insulation materials such as expanded polystyrene are often used as cup-shaped heat insulating containers of this kind. As an alternative, there has been proposed a paper-made heat-insulating container in which a body portion is doubled by a paper cup main body and an outer cylinder to form a heat-insulating cavity 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.
An object of the present invention is to provide a container having an excellent heat insulating property, in which the heat of the contents is hardly transmitted even if any part of the body is held by hand.

[0005]

In order to achieve the above object, a heat insulating container according to the present invention comprises a paper cup body having an outward curl at an upper opening edge, a lower opening edge which is open at both upper and lower sides. The paper tube has a paper outer cylinder having an inward curl portion, and the outer cylinder has an upper opening inner surface in contact with an outer periphery of a side wall immediately below the outward curl portion in the paper cup body and an inward curl portion at a lower opening edge of the paper cup body. It is large enough to contact the outer periphery of the lower side wall of the main body, and the outer cylinder is put on the paper cup main body, and the inner surface of the upper opening of the outer cylinder is adhered to the outer periphery of the side wall immediately below the outward curl portion of the paper cup main body to integrate them. Wherein the outer cylinder is formed of a paperboard embossed so that characters or patterns to be printed form an outwardly protruding portion. .

[0006]

Next, an embodiment of the present invention will be described with reference to 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 sectional view and a front view, respectively. It is composed of a main body 2 and a hollow cylindrical outer cylinder 3 which is open both above and below.

The paper cup main body 2 is made of paper coated with a synthetic resin such as polyethylene on the inner surface or the inner and outer surfaces. Like the ordinary paper cup, the bottom plate 5 is wrapped around the lower part of the body 4 and the outer opening edge is formed. Orientation curl part 6
Is formed.

On the other hand, the hollow cylindrical outer cylinder 3 is made of paper alone or paper coated on one or both sides with a synthetic resin such as polyethylene, and an inward curl portion 8 is formed at the lower opening edge of the body portion 7. Have been. The outer cylinder 3 has a tapered shape in which the body 7 is slightly wider than the body 4 of the paper cup body 2, and the inner surface of the upper opening contacts the outer periphery of the side wall of the paper cup body 2 directly below the outward curl portion 6. At the same time, the inward curl portion 8 at the lower opening edge is sized to contact the outer periphery of the lower side wall of the paper cup body 2. As shown in the figure, the outer cylinder 3 is formed of a paperboard that has been embossed so that the characters or patterns to be printed form an outwardly protruding portion 9. In this embossing process, the printed characters and patterns are not only protruded to the front side but also deep to form recesses on the back side so that the printed characters and patterns can be seen to be floating when touched by hand or visually. It has been given.

Then, the outer cylinder 3 having the above structure is put on the paper cup main body 2 and the inner surface of the upper opening of the outer cylinder 3 is bonded to the outer peripheral surface of the side wall immediately below the outward curl portion 6 of the paper cup main body 2 by means of an emulsion adhesive or the like. Then, by integrating them, the heat insulating container 1 of FIG. 1 is formed. In some usages, the inward curl portion 8 formed at the lower opening edge of the outer cylinder 3 is also adhered to the outer peripheral surface of the side wall below the paper cup body 2, so that the paper cup body 2 and the outer cylinder 3 are joined. May be made more reliable.

In the heat-insulating container 1 having the above-described structure, the body 4 of the paper cup body 2 and the body 7 of the outer cylinder 3 having different tapers are provided.
A gap 10 is formed between the gaps, and the portion of the gap 10 performs a heat insulating action, so that, for example, when hot water is poured, the heat of the inner body 4 is prevented from being transmitted to the outer body 7. Then, the contents are stored in the lower part of the paper cup body 2 for a long time, but the gap 10 between the paper cup body 2 and the outer cylinder 3 is formed by the inward curl portion 8 at the lower opening edge of the outer cylinder 3. Since the gap 10 is maximum in the vicinity, that is, the gap 10 becomes larger toward the lower side, a good heat insulating effect is exhibited. In addition, since the outer cylinder 3 is in a state where characters and patterns are protruded outward as the protruding portions 9, the heat insulating effect is enhanced in those portions, so that heat is hardly transmitted to the hands.

The embossed portion 9
Does not need to be formed for all the characters and patterns, but only for the characters and patterns to be emphasized. In the present invention, it is preferable to design the characters and patterns so that the raised portions 9 are distributed over the entire outer circumference in consideration of the area held by the hand of the outer cylinder 3.

[0013] Further, on the body portion 4 of the paper cup body 2, a ridge projecting in the circumferential direction and protruding toward the inner side or the outer side may be formed to provide an injection reference line as a guide when pouring hot water. .

[0014]

The present invention comprises a paper cup main body having an outward curl portion at an upper opening edge, and a paper outer cylinder open both upward and downward and having an inward curl portion at a lower opening edge. The outer cylinder has a size such that the inner surface of the upper opening contacts the outer periphery of the side wall immediately below the outward curl portion of the paper cup body, and the inward curl portion of the lower opening edge contacts the outer periphery of the lower side wall of the paper cup body. In the heat-insulating container formed by covering the main body with the outer cylinder and adhering the inner surface of the upper opening of the outer cylinder to the outer periphery of the side wall immediately below the outward curl portion of the paper cup main body, the characters and patterns to be printed are formed on the outer side. The outer cylinder is made of paperboard that has been embossed so as to form an embossed portion, so that in addition to the heat insulation effect provided by the gap between the paper cup body and the outer cylinder, It added adiabatic effect by lifting out portion of the surface, and that the heat insulating effect is more excellent.

Further, since the characters and patterns to be printed are protruded on the surface of the outer cylinder, it is possible to obtain a design with an excellent design in which the characters and patterns are emphasized by the unevenness. .

[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 sectional drawing and front view, respectively.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulated container 2 Paper cup main body 3 Outer cylinder 4 Body 5 Bottom plate 6 Outward curl part 7 Body part 8 Inward curl part 9 Embossed part 10 Void

Continued on the front page (72) Inventor Hideki Shimizu 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Inventor Katsuhiro Yamagata 1-1-1-1, Ichigaga-cho, Shinjuku-ku, Tokyo Within Dai Nippon Printing Co., Ltd. (72) Inventor Mineo Mukai 1-1-1, Ichigaya Kagacho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Inventor Yoshitoshi Ota 1-1, Ichigaga-cho, Shinjuku-ku, Tokyo No. 1 Inside Dai Nippon Printing Co., Ltd. (72) Inventor Yasutoyo Komiya 1-1-1, Ichigaya Kagacho, Shinjuku-ku, Tokyo Inside Dai-Nippon Printing Co., Ltd. No.1-1, Dai Nippon Printing Co., Ltd.

Claims (1)

[Claims] 1. A paper cup body having an outward curl portion at an upper opening edge, and a paper outer cylinder having an inward curl portion at an upper opening edge and a lower opening edge. The inner surface of the upper opening is large enough to contact the outer periphery of the side wall immediately below the outward curl portion of the paper cup body, and the inward curl portion of the lower opening edge thereof contacts the outer periphery of the lower side wall of the paper cup body. In a heat-insulating container formed by bonding the inner surface of the upper opening of the outer cylinder to the outer periphery of the side wall immediately below the outward curl portion of the paper cup body and integrating them together, characters and patterns to be printed are raised outward. A heat-insulating container, wherein the outer cylinder is formed of a paperboard embossed so as to form a portion.