JPH11222225A - Heat-resistant paper container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper container having highly effective insulating properties. SOLUTION: On the top side of a barrel wall 11, of a container main body 1 an outwardly protruding peripheral stage part 12 is provided. At a plurality of places at the bottom of a barrel wall 21 of a sleeve 2 where the outer periphery of the peripheral stage part 12 touches, a U-shaped notch is provided. A flap 24 formed by the notch 23 is bent toward the barrel wall 11 of the container main body 1 along a folding line 25 at its base part, and its tip end is adhered to the outer peripheral face of the barrel wall 11 so as to separate most of the wall 11 of the container main body 1 and the wall 21 of the sleeve 2, and forming a gap 3 for insulation between the walls.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for holding instant noodles and the like, and more particularly, to a paper-made heat-insulating container which can be poured with boiling water and eaten as it is.

[0002]

2. Description of the Related Art At present, instant noodles and the like are mainly in cups, and plastics such as expanded polystyrene, which is excellent in heat resistance and heat insulating effect, are mainly used for cups. However, since these plastics are one of the main causes of garbage pollution, as a substitute for this, a paper-made heat insulating container having a heat insulating cavity 3 formed in the body as shown in FIG. 2 has been proposed. .

[0003]

However, the conventional paper heat insulating container shown in FIG.
3 between the body and the body wall 21 of the sleeve 2 as the exterior material
Was generally formed narrower toward the lower side.
In addition, it was common to eat by holding the lower side of the container formed long vertically. When pouring hot water at the time of eating, the torso walls 11 and 21 become soft due to heat and moisture, and the torso walls 11 and 21 come into contact with each other, impairing the heat insulating effect and becoming hot and cannot be held by hand. There was a problem.

[0004] Therefore, there has been a strong demand for the development of a paper container having excellent heat insulating properties in which the body walls of the vertically long container do not come into contact with each other even when the body is held by hand.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and in a paper container having a double-walled body, a paper container having a double-walled outer wall is provided on the body wall of the container body. And a U-shaped cut is provided at the lower part of the body wall of the sleeve in which the outer peripheral portion of the circumferential step is inscribed, and the flap formed by this cut is removed from the root portion of the container body. Bends to the body wall side of the container body, the tip of which is attached to the outer surface of the body wall of the container body to separate most of the body wall of the container body and the body wall of the sleeve, and between the body walls. An object of the present invention is to provide a heat insulating paper container characterized by forming a void.

[0006]

The double-walled body walls are separated and fixed by the orbital step provided on the body wall of the container body and the flap of the sleeve whose tip is attached to the outer peripheral surface of the container body. In addition, since the orbiting step is provided, even if the lower side of the vertically long container is held by hand, the body walls do not come into contact with each other, and an excellent heat insulating effect is maintained.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The insulated paper container shown in FIG. 1 comprises a container body 1 formed of a paper-based material and a sleeve 2 as its outer material, and is made of an adhesive, heat seal, or the like. And are integrated by an appropriate means.

The container body 1 has an orbiting step 12 projecting outward on the upper side of the body wall 11. The portion of the body wall 11 of the container body 1 extending upward from the orbiting step 12 is
The sleeve 2 is affixed so as to be inscribed in the upper opening end of the body wall 21. On the other hand, flaps 24 formed by U-shaped cuts 23 are provided at a plurality of locations below the middle wall of the body wall 21 of the sleeve 2. The container body 1 is bent at a substantially right angle in the direction of the body wall 11,
Is formed on the outer peripheral surface of the body wall 11 of the container body, and a gap 3 for heat insulation is formed between the body wall 11 of the container body 1 and the body wall 21 of the sleeve 2.

That is, in the heat insulating paper container of the present invention, the body wall 11 of the container body 1 and the body wall 21 of the sleeve 2 are provided.
Are mostly separated and fixed by the upper orbiting step 12 and the middle lower flap 24 to form the heat insulating gap 3, so that the interval between the heat insulating gaps 3 is stably maintained. .

Here, the orbiting step 12 of the container body 1 may be provided not in the upper part but in the middle part or in both the upper part and the middle part. Further, the flap 24 of the sleeve 2 may be provided in consideration of the position of the hand holding the container when eating food such as instant noodles, and may be provided, for example, below the position shown in FIG.

As a method for integrating the container body 1 and the sleeve 2, when the upper end of the body wall 11 is tightened to improve the strength of the open end of the container body 1, the body wall of the sleeve 2 is used. 21 may be simultaneously wound and fixed.

The body wall 11 and the bottom plate 13 of the container body 1 are provided.
Is made of paper coated with a plastic film such as polyethylene on the inner surface, and a sleeve 2 as an exterior material is used as a single piece of paper (a heat-sealing film such as polyethylene is coated when adhesively fixed to the container body 1 by heat sealing). ) Makes disposal easy.

[0013]

As described above, in the heat-insulating paper container according to the present invention, the orbiting step provided on the body wall of the container body,
With the flap of the sleeve of the exterior material, the tip of which is attached to the outer peripheral surface of the body wall of the container body, the body wall of the container body and most of the body wall of the sleeve are separated from each other. Since the gap is provided and the orbital step is provided, even if the lower side of the container is held by hand, contact between the body walls hardly occurs, and therefore, an excellent heat insulating effect is maintained.

[0014] Further, since the heat insulating container is mainly made of paper, it does not pose a problem when discarded, and it is suitable for printing and can perform beautiful printing compared to foamed polystyrene or the like. Then, the appearance of the paper cup is hardly impaired, and the cost is not particularly increased if the paper cup is manufactured using the conventional manufacturing process.

Further, if the exterior material is formed in a sleeve shape as in the embodiment, it is only necessary to wind a fan-shaped paper, so that the molding is easier and the cost can be reduced as compared with a bottomed material. .

Further, when the shape is cylindrical, the force acting on the body is dispersed from the container having the polygonal structure, the deformation is suppressed, the body walls hardly come into contact with each other, and a good heat insulating effect is maintained. Is added.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment, (A) is an explanatory view showing a cross section, and (B) is an expanded explanatory view of a sleeve as an exterior material.

FIG. 2 is an explanatory diagram of a conventional example. DESCRIPTION OF SYMBOLS 1 ... Container main body 11 ... Trunk wall 12 ... Circular step 13 ... Bottom plate 2 ... Sleeve 21 ... Trunk wall 23 ... Cutout 24 ... Flap 25 ... Folding ruled line 3 ... Void

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshiaki Take 1-5-1 Taito, Taito-ku, Tokyo Inside Toppan Printing Co., Ltd. (72) Inventor Takeshi Aikawa 1-1-5-1 Taito, Taito-ku, Tokyo Letterpress Inside Printing Co., Ltd. (72) Inventor Masaharu Eto 1-5-1, Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd.

Claims (1)

[Claims] In a paper container having a double-walled body portion, a circumferential step portion protruding outward is provided on a body wall of a container body, and an outer peripheral portion of the circumferential step portion is insulated by a sleeve. A U-shaped cut is provided in the lower part of the body wall, and the flap formed by this cut is bent from the root to the body wall of the container body, and the tip is attached to the outer surface of the body wall of the container body. A body wall of the container body and a majority of the body wall of the sleeve are separated from each other, and a gap is formed between the body walls.