JP3054650U - Paper insulation container - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To use a paper obtained from a natural resource as a container material, thereby eliminating garbage pollution and harm by environmental hormones, and interposing a bellows paper cylinder between an inner paper cup and an outer cylinder. Therefore, the strength as a container is enhanced, and the heat conduction in the thickness direction of the paper is eliminated to increase the heat insulating effect. SOLUTION: In making an insulating container in which a paper cup is covered with an outer cylinder, a bellows paper cylinder 4 having a number of vertical folds 3 is interposed on the outer peripheral surface of a paper cup 1 having an outer flange 2 formed on an opening edge. The paper outer cylinder 5 was covered, and the outer flange 2 of the paper cup 1 was superposed and bonded to the upper outer flange 6 of the outer cylinder 5.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a paper-made heat-insulating container suitable for storing a heat-processed dry food or a cold-preserved food in a cup and allowing the user to just pour boiling water into the cup.

[0002]

[Prior art]

 Conventionally, as this type of heat insulating container, a heat insulating container formed of styrene foam has been mainly used. However, it has recently been found that this type of heat insulating container has toxicity due to an environmental hormone called bisphenol A. Occasionally, high heat is generated, shortening the life of the furnace, and increasing the size of the furnace, which is cumbersome and troublesome for waste disposal.

As another heat insulating container, there is a conventional heat insulating container described in, for example, Japanese Utility Model Application Laid-Open No. 56-94713. This conventional technique has an extremely small taper, and has a cylindrical mantle body having a large-diameter end formed with an outwardly curved flange at its large-diameter end, and a taper larger than the taper. Formed at the bottom, the outer diameter of the large-diameter end is equal to the inner diameter of the large-diameter end of the mantle, and is curved outward at the large-diameter end to form a flange concentric with the flange. And a flanged lid fitted to the flange of the container.

[0004]

[Problems to be solved by the invention]

 According to the above-mentioned conventional technique, since the upper inner peripheral surface of the outer jacket is in direct surface contact with the upper outer peripheral surface of the container body, the heat of the food in the inner container is formed on the upper portion of the outer jacket by the thickness of the material. In the case of hot food such as instant noodles in which hot water is poured into the food due to conduction in the direction, the fingers holding the upper part of the jacket will suddenly become hot and cause burns, or try to prevent finger burns. Therefore, there was a problem that the hot food and boiling water could be dropped together with the inner container by releasing the hand from the mantle.

In addition to this conventional example, as described in Japanese Utility Model Application Laid-Open No. 61-107774, a cup composed of a bottom plate and a side plate formed with a fold integral with the bottom plate has a side plate outside the cup. A heat insulation container for baked confectionery, which is fitted with a cylindrical outer frame that covers all or a part of the side plate and has a flat surface with a pattern such as characters and pictures on the outside and has poor heat conduction. It is well known.

In this case, the baked lightweight confectionery in the cup is solidified on the inner surface of the fold of the cup, so that the heat conduction to the outer frame of the cup depends on the line contact conduction by the ridge line of the fold. Therefore, the heat insulation effect is relatively good, but there is still heat conducted in the thickness direction of the ridgeline, and the cup itself is made of thin paper with flapper such as glassine paper. Since it is an extremely deformable container integrally formed with the side plate, there is a problem that when water or liquid is added, the upper part of the container opens due to the gravity and the liquid overflows.

In order to eliminate the above-mentioned problems, the present invention uses paper obtained from natural resources as a container material, thereby eliminating garbage pollution and environmental hormone poisoning. The purpose of the present invention is to enhance the strength as a container by interposing a bellows paper cylinder between them, and to eliminate the heat conduction in the thickness direction of the paper to increase the heat insulation effect.

[0008]

[Means for Solving the Problems]

 The purpose of the above-mentioned invention is to make a heat insulating container in which a paper cup is covered with an outer cylinder by interposing a bellows paper cylinder having a number of vertical folds on the outer peripheral surface of a paper cup having an outer flange formed on an opening edge. This was achieved by covering the outer cylinder made of paper and bonding the outer flange of the paper cup to the upper outer flange of the outer cylinder. The lower part of the outer cylinder can be reinforced by extending the lower part of the outer cylinder below the bottom of the paper cup and curling the periphery of the lower edge of the outer cylinder.Furthermore, the flanges are curled by a well-known curling machine. Alternatively, the curl-forming flanges may be heated and pressed to polymerize and bond the flanges together. In this case, polyethylene coated paper may be used as the paper material constituting the paper cup or the outer cylinder.

[0009]

[Embodiment of the invention]

 First, as shown in FIG. 1, the basic form of the present invention is to form a heat insulating container in which an outer cylinder is covered on a paper cup which is spread upward, and the outer peripheral surface of a well-known paper cup 1 having an outer flange 2 formed on an opening edge. 2, a bellows paper cylinder 4 having a large number of vertical folds 3 is interposed by spot bonding or the like to cover a paper outer cylinder 5 which is widened upward as shown in FIG. The outer flange 2 of FIG. 1 was polymerized as shown in FIG. 2 and bonded with a glue to form a heat insulating container having a three-layer cross-sectional structure as a whole as shown in FIG.

The heat-insulated containers thus manufactured according to the present invention can be stacked and stacked without bulk, so that they can be efficiently transported to a food manufacturer. And other things (not shown) are put in, and a lid plate is airtightly adhered to the upper surface of the outer flange 2 of the paper cup 1 before shipping.

[0011] The purchaser peels off the lid plate from the paper cup 1, pours boiling water into the instant food in the cup, waits for about 3 minutes, and eats. At this time, the user holds the outer cylinder 5 by hand and eats. However, the heat emitted from the paper cup 1 can be cut off by the bellows paper cylinder 4 interposed in the middle, and since there is no heat conduction to transmit in the thickness direction of the paper, the outer cylinder 5 does not become hot. Food can be eaten while holding the outer cylinder 5 by hand.

Since the used container is entirely made of paper, which is a natural material, it is easy to dispose of garbage, there is no harmful effect of environmental hormones, and the bellows paper cylinder 4 is interposed between the paper cup 1 and the outer cylinder 5. Therefore, even if the outer cylinder 1 is held firmly by hand, it will not be crushed, and even a container that is quite heavy with liquid can be carried with confidence.

[0013]

【Example】

 Although the aspect ratio of the heat insulation container according to the present invention can be arbitrarily selected, for example, as shown in FIGS. 3 and 4, the heat insulation container can be a flatter heat insulation container than the previous example. 3 and FIG. 4 indicate the same or equivalent parts as those in FIG. 1 and FIG.

In order to bond the upper flange 6 of the outer cylinder 5 to the lower surface of the outer flange 2 of the paper cup 1 by polymerization, for example, a polyethylene coat layer (a so-called poly coat layer) is formed on the inner surface of the outer cylinder 5. If a paper outer cylinder is provided with a heat-adhesive synthetic resin layer, the flanges can be bonded to each other simply by polymerizing the flanges and applying heat and pressure. The polycoat layer may be applied to the inner surface of the paper cup 1 as well.

[0015]

[Effect of the invention]

 The present invention is configured as described above, and has the following effects. In making an insulated container in which a paper cup is covered with an outer cylinder, a bellows paper cylinder 4 having a number of vertical folds 3 is interposed on the outer peripheral surface of a paper cup 1 having an outer flange 2 formed on an opening edge. By covering the cylinder 5 and superposing and bonding the outer collar 2 of the paper cup 1 to the upper outer collar 6 of the outer cylinder 5, it is possible to obtain a heat insulating container having high physical strength against external force and excellent heat insulating effect. did it.

That is, in the present invention, by using paper obtained from natural resources as the container material, garbage pollution and poisoning by environmental hormones could be eliminated, and structurally, the paper cup 1 on the inner side could be used. With the bellows paper cylinder 4 interposed between the outer cylinder 5, the strength as a container can be enhanced, and the heat insulation effect can be increased by eliminating heat conduction in the thickness direction of the paper. Has the effect of

[Brief description of the drawings]

FIG. 1 is a perspective view of an insulated container according to the present invention during assembly.

FIG. 2 is an enlarged sectional view of the heat insulating container according to the present invention after assembly.

FIG. 3 is an exploded perspective view showing another example of the heat insulating container according to the present invention.

FIG. 4 is an enlarged sectional view showing another example of the heat insulating container according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper cup 2 Outer flange 3 Vertical fold 4 Bellows paper cylinder 5 Paper outer cylinder 6 Upper outer collar

Claims (1)

[Utility model registration claims] 1. An insulating container in which a paper cup is covered with an outer cylinder.
A paper outer cylinder 5 is covered with a bellows paper cylinder 4 having a number of vertical folds 3 interposed therebetween, and the outer flange 2 of the paper cup 1 is superimposed and bonded to an upper outer flange 6 of the outer cylinder 5. Insulated container.