JP2000103477A - Heat-insulated container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container superior in heat-insulating property which hardly conducts the heat of its contents regardless where on its body part it is held with hands. SOLUTION: The heat insulated container 1 comprises a paper cup main body 2 having an outward curl part 6 at the top open edge and a paper outside tube 3 which is open both at the top and at the bottom having an inward curl part 8 at the bottom open edge. The paper cup main body 2 is covered with the outside tube 3 for adhering the top open inside face of the outside tube 3 to the side wall outer periphery directly under the outward curl part 6 of the paper cup main body 2 to form them integrally. The outside tube 3 is formed of a panel paper whose outside face is embossed wholly. In addition to heat insulating effect by the gap 9 formed between the paper cup main body 2 and the outside tube 3, the heat insulation action of the uneven surface of the outside tube further improves the heat insulation effect of the container.

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. In the heat insulating container in which the gap between the paper cup main body and the outer cylinder is maximized in the vicinity of the inward curl portion of the lower opening edge of the outer cylinder, a fine space is formed over substantially the entire outer surface. En It is characterized by the formation of the outer cylinder at made by applying scan processing board.

[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, the outer cylinder 3 is formed of embossed paperboard over the entire outer surface.
This embossing may be an appropriate concavo-convex pattern such as a satin pattern. In addition, the unevenness may be formed deeply on the back surface.

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 9 is formed therebetween, and the portion of the gap 9 performs a heat insulating action.
Is prevented from being transmitted to the outer body 7. And
Although the contents have entered the lower part of the paper cup body 2 for a long time, the gap 9 between the paper cup body 2 and the outer cylinder 3 is close to the inward curl portion 8 at the lower opening edge of the outer cylinder 3. maximum,
That is, since the gap 9 becomes larger toward the lower side, a good heat insulating effect is exhibited. In addition, since the outer surface of the outer cylinder 3 is not embossed over the entire surface and is not flat, it is easy to hold by hand, and even if the outer cylinder 3 itself has heat, the heat is transmitted to the hand. It has become difficult. In addition, since an uneven pattern can be formed on the outer cylinder 3 by embossing, it is also possible to provide a design effect in appearance.

In the above example, the embossed pattern is formed over substantially the entire surface of the body portion of the outer cylinder. However, a portion where the concavo-convex 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.

[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. It is formed by covering the main body with the outer cylinder, 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 main body and integrating them together, and forming a gap between the paper cup main body and the outer cylinder. In the heat-insulating container which is the largest in the vicinity of the inward curl portion at the lower opening edge of the outer opening, the outer cylinder is formed of paperboard which is embossed over the entire outer surface, so that the paper cup In addition to the heat insulating effect of the air gap between the body and the outer cylinder is exerted, also joined insulation effect due to unevenness of the outer cylinder surface, and that the heat insulating effect is more excellent.

Further, since the surface of the outer cylinder has irregularities due to embossing, it is easy to hold it by hand, and it is possible to obtain a design having an unconventional design by the pattern of the irregularities.

[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 8 Inward curl part 9 Air gap

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 Yama-ken 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 F-term within Dai Nippon Printing Co., Ltd. 3E067 AA03 AA11 AB01 BA07A BB01A BB15A BB26A CA18 EA04 EC22 ED03 EE07 EE34 GA12

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. Is 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 main body so as to integrate them, and the gap between the paper cup main body and the outer cylinder forms a lower opening edge of the outer cylinder. In the heat insulating container which is the largest in the vicinity of the inward curl portion, the outer cylinder is formed of a paperboard subjected to fine embossing over substantially the entire outer surface. Interruption Thermal container.