JP2001322618A - Heat-insulating container for foodstuff - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat-insulating container for a foodstuff which is excellent in heat insulation, can secure appropriate strength and also can be reduced in weight. SOLUTION: The heat-insulation container for a foodstuff comprises a flange 2 formed at an upper rim of an opening of a bottomed cylindrical container body 3 and vertical ribs 7 molded by injection-molding on an outer peripheral surface of the container body 3 to protrude radially. An uneven-formed contents level 13a is formed on an inner peripheral surface of the container body 3 and in the vicinity of the upper rim of the opening. In addition, a reinforcing means comprising a peripheral wall surface 3a formed to be uneven is provided in a peripheral direction of the container body 3 at one position lower than the contents level 13a and higher than the center between a base of the container body 3 and the upper rim of the opening.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to dried foods,
The present invention relates to a heat-insulating container for food, which is most suitable for storing a lump of food such as dried instant noodles that can be poured with boiling water and for storing low-temperature food such as a frozen product or a refrigerated product.

[0002]

2. Description of the Related Art Conventionally, containers for instant foods such as instant instant noodles (dried noodles, snack noodles, and miso soup in a cup), and containers for hot coffee or very cold beverages, take into account the danger of burns and the ease of holding. In addition, the container itself is devised for heat insulation.

For example, as the heat insulating container, a container formed by molding a foamed resin such as styrene foam or injection molding is employed. Particularly, recently, containers that are formed by injection molding using polypropylene as a material are currently being used because environmentally superior materials are demanded by society. Such an injection-molded container is provided with vertical ribs radially on the outer peripheral surface of the container body,
Heat such as boiling water poured into the container is not transmitted to the fingers holding the container.

[0004]

It is necessary to reduce the weight of the above-mentioned heat insulating container and to prevent it from becoming expensive. As a means for that, it is conceivable to reduce the thickness of the container as much as possible to reduce the resin material. However,
When the thickness of the container is reduced, there is a disadvantage that the strength is reduced.
Moreover, particularly when hot water is poured into the container, the container itself is softened and easily deformed, and the strength is further reduced.

The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a heat-insulating container for food which is excellent in heat insulation, can secure appropriate strength, and can reduce the weight. I do.

[0006]

SUMMARY OF THE INVENTION The present invention has been made as an insulated container for food in order to solve the above problems,
The feature of the heat insulating container for food according to the present invention is that a flange portion 2 is formed on an upper edge of an opening of a bottomed cylindrical container body 3,
In addition, in a heat insulating container for food, which is formed by injection molding such that the vertical ribs 7 protrude radially from the outer peripheral surface of the container body 3, the inner peripheral surface of the container body 3 and the upper edge of the opening are provided. The peripheral wall 3a is formed near the center of the container main body 3 at a position lower than the perforated line 13a and above the central position from the bottom surface of the container body 3 to the upper edge of the opening. The reinforcement means formed in a shape is provided in the circumferential direction of the container body 3.

[0007] Since the peripheral wall 3a to be gripped by the container body 3 is provided with an uneven reinforcing means, the strength of the peripheral wall 3a can be improved in the uneven portion together with the ribs 7. In addition, since the peripheral wall 3a is formed with irregularities on the front and back surfaces, gripping strength is increased, so that the resin material can be reduced, and cost reduction and weight reduction can be expected.

In addition, it is preferable that the reinforcing means is formed so that the peripheral wall 3a is continuous in a stepwise manner.

Further, the peripheral wall 3a is formed such that an annular upper peripheral wall 9a and a lower peripheral wall 9b are connected in a stepwise manner via a horizontal annular connecting portion 10, and the upper peripheral wall 9a At the lower end, an auxiliary piece 14 is extended downward so as to have a predetermined distance from the lower peripheral wall portion 9b, and both ends of each auxiliary piece 14 are connected to each rib 7, and the connecting portion 10 It is preferable that the reinforcing means is constituted by the auxiliary piece 14 and the auxiliary piece 14.

In such a case, the peripheral wall 3a and the auxiliary piece 15 can form a double wall structure, and the strength of the container body 3 can be further improved. Moreover, since the space 17 is formed between the auxiliary piece 15 and the peripheral wall 3a, even when, for example, hot water is poured into the container body 3, heat is hardly transmitted to the auxiliary piece 15.

Preferably, the reinforcing means is provided at a height of 50 to 70% from the bottom surface 3b to the upper edge of the opening.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show a first embodiment of the present invention, and the container of the present embodiment illustrates an instant cup noodle mass (dry noodle) as an example of dry food.

The container 1 is provided with a heat-resistant cup-shaped (bottomed cylindrical) container body 3 made of a plastic material such as polypropylene or high-density polyethylene. A flange portion 2 having a letter shape is provided, and the flange portion 2 is releasably sealed by a sealing lid (not shown) made of a laminated material such as aluminum foil and a synthetic resin film or paper.

The container body 3 is formed by injection molding so that the diameter decreases as it goes downward. On the outer peripheral surface of the peripheral wall 3a of the container main body 3, a number of ribs 7 are protruded radially, and each rib 7 is provided continuously in the vertical direction of the container main body 3. At the upper part of the container body 3, a portion (large diameter portion) 5 which is cylindrical and has no flat ribs with no uneven surface is formed, and the upper end of each rib 7 is connected to the large diameter portion 5. , Upper end of each rib 7 and large diameter portion 5
Are flush with each other.

The peripheral wall 3a of the container main body 3 between the ribs 7 is formed with uneven front and back surfaces. That is, the peripheral wall 3a is formed such that a plurality of (two steps in the present embodiment) annular peripheral wall portions 9a and 9b are connected in a stepwise manner.

The upper peripheral wall portion 9a has a tapered upper tapered portion 11a having a diameter smaller than that of the large diameter portion 5 and connected to the large diameter portion 5 via a horizontal annular first connection portion 13, and an upper tapered portion. And a straight portion 11b having substantially the same diameter and extending downward from the portion 11a. And the lower end of the straight portion 11b is a horizontal annular second connecting portion 1
0, it is connected to the upper end of the lower peripheral wall 9b.
The upper surface of the first connection portion 13 serves as a score line indicating the position of hot water to be put into the container body 3 when eating dry food, for example, and the score line 13a is provided near the upper edge of the opening. ing.

At the lower end of the straight portion 11b, a downwardly directed auxiliary piece 14 is provided at a predetermined distance from the lower peripheral wall portion 9b, and both ends are connected to the respective ribs 7 so as to be connected to each other. It is formed in the circumferential direction of the container body 3. Here, reinforcing means is constituted by the second connecting portion 10 and the auxiliary piece 14, and the lower end of the auxiliary piece 14 constituting the reinforcing means is located below the line of sight 13a and has an opening edge from the bottom surface 3b of the container body. It is located in one place above the central position. Further, the reinforcing means is preferably at a height in the range of 50 to 70% from the bottom surface 3b to the upper edge of the opening. Also, rib 7
Is protruded from the auxiliary piece 14, and moreover,
The lower peripheral wall 9b is inclined substantially parallel to the taper angle of the lower peripheral wall 9b.

On the inner peripheral surface of the lower peripheral wall portion 9b and below the reinforcing means, a locking rib 15 is provided so as to protrude in the circumferential direction. Therefore, when a plurality of containers 1 are overlapped as shown in FIG.
Etc. are locked. Reference numeral 17 denotes a cylindrical leg integrally formed downward from the bottom wall 3b.

A heat-shrinkable cylindrical label 18 is fitted around the outer periphery of the peripheral wall 3a of the container body 3. On the inner surface of the label 18, a heat-sensitive adhesive which is activated by heat at the time of heat shrinkage of the label 18 and exerts adhesiveness is applied, and the upper portion of the label 18 is attached to the container body 3 via the heat-sensitive adhesive. It is adhered to the surface 5a of the large diameter portion 5. Therefore, although the label 18 is tapered along the rib 7,
It is held without falling down from the container body 3. Further, a beautiful printed display can be obtained by the label 18.

When, for example, hot water is poured into the container 1 having the above structure, even if the peripheral wall 3a corresponding to the grip portion of the container body 3 becomes hot, the rib 7 has a heat radiation effect.
Since the tip end surface of the rib 7 has a relatively low temperature and a small contact area with the finger to be gripped, it does not feel any particular heat.

In addition, even if the container body 3 is relatively firmly gripped, the reinforcing means (the second connecting portion 10 and the auxiliary piece 14) is provided at a substantially central position (a position at which the container body 3 is easily deformed) of the peripheral wall 3a.
Is formed, the diametrical strength is improved as compared with the case where the peripheral wall 3a is a flat surface, and it is difficult to deform when the container main body is gripped. Further, generally, when the synthetic resin is heated, it tends to be slightly softened and its rigidity is reduced, but even if the auxiliary piece 14 is heated together with the container body, each rib 7 is Since the ribs 7 protrude from the auxiliary pieces 14, the ribs 7 are hardly heated, and the strength of the ribs 7 can be prevented from lowering. Moreover, the line of sight 13a
Since the flange portion 2 that is not directly in contact with the hot water is provided above, the flange portion 2 can maintain the rigidity of the container body 3 despite the hot water being put in with the rib 7. It is possible.

Furthermore, since the inner peripheral surface of the peripheral wall 3a of the container body 3 is formed in a stepped shape corresponding to the outer peripheral surface, the thickness of the peripheral wall portion can be reduced without providing a thick portion for reinforcement. The thickness can be reduced, the material cost can be reduced by reducing the resin material, and the weight can be reduced.

In the container body 3, the ribs 7 are provided in an inclined state as described above, and the peripheral wall 3a is substantially vertically or slightly inclined in the same direction as the ribs 7, so that the auxiliary piece 14 can be elastically deformed by a predetermined force. Since it is provided in one place, the mold can be easily removed from the mold (opening of the container body in the vertical direction). Further, in the present embodiment, the necessary strength is secured and the chopsticks and the like are prevented from being caught by the minimum reinforcing means (the number of steps on the inner peripheral surface of the container body 3 is reduced). .

FIG. 4 shows a second embodiment of the present invention. In the container body 3 of the present embodiment, the peripheral wall 3a has an upper peripheral wall 9a.
And the lower peripheral wall 9b, and the reinforcing means is constituted by the second connecting portion 10 and the auxiliary piece 14, as in the first embodiment. The flange portion 2 is composed of only a horizontal portion. At the lower end of the large-diameter portion 5, an auxiliary piece 14a is provided at the upper tapered portion 1 of the upper wall portion.
1a and both ends have ribs 7 on both sides.
It protrudes downward so as to be connected to. Further, by installing the auxiliary piece 14a at the same height as or near the eye line 13a, it is possible to realize the flat flange portion 12 maintaining the same strength as the U-shaped cross-section flange portion. By making the flange portion 12 flat, the sealing processability of the lid can be increased, and the width of the flange portion 12 can be reduced. In addition, also in this embodiment, the heat-shrinkable label 18 can be attached similarly to the first embodiment.

The present invention is not limited to the above embodiment. For example, the container may be a container for hot coffee or a very cold beverage other than a container for storing dried noodles cooked in hot water. May be. Further, the shape of the container body 3 is not limited to a circular shape in a plan view, but may be any rectangular shape or an elliptical shape.

[0026]

As described above, according to the present invention, an irregular perforated line is formed on the inner peripheral surface of the container main body and near the upper edge of the opening, and the container line is provided below the perforated line and below the perforated line. At one point or more from the center position from the bottom surface of the main body to the upper edge of the opening, reinforcing means having a peripheral wall portion formed in an uneven shape is provided in the circumferential direction of the container main body, so that the heat insulating property is excellent and the strength is moderate. Can be secured, and the weight can be reduced as compared with the case where a thick portion for securing strength is provided.

Moreover, since the irregularity of the peripheral wall can be reduced while maintaining the predetermined strength of the container body, it is possible to prevent chopsticks, spoons and hawks from catching on steps when eating food.

Further, the peripheral wall is formed such that an annular upper peripheral wall and a lower peripheral wall are connected in a stepwise manner via a horizontal annular connecting portion, and an auxiliary peripheral wall is provided at a lower end of the upper peripheral wall. A piece is extended downward so as to have a predetermined interval with the lower peripheral wall portion, and both ends of each auxiliary piece are connected to each rib, and the connecting portion and the auxiliary piece constitute reinforcing means. In this case, the peripheral wall and the auxiliary piece can form a double wall structure, and the strength of the container body can be further improved.

Further, when the reinforcing means constituted by the connecting portion and the auxiliary piece is provided at a height of 50 to 70% from the bottom surface, the reinforcing means is provided at a portion where the reinforcing means can be elastically deformed by a predetermined force. Since it is provided only in one place, it is possible to prevent a decrease in mold releasability from the mold during injection molding of the container, and since there is no uneven part other than the line of sight on the upper part of the inner peripheral surface of the container, There is no misunderstanding.

[Brief description of the drawings]

FIG. 1 is a half sectional view of a container according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the main part.

FIG. 3 is a half sectional view of a state where the containers are overlapped.

FIG. 4 is a half sectional view of a container according to a second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 3 ... Container main body, 3a ... Peripheral wall, 7 ... Rib, 9a ... Upper peripheral wall part, 9b ... Lower peripheral wall part, 10 ... Second connection part (connection part),
13a ... eye line, 14 ... auxiliary piece, 17 ... space

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hiroyuki Imai 5-3-18 Imazukita, Tsurumi-ku, Osaka F-term in Fuji Seal Co., Ltd. (Reference) 3E033 AA08 BA13 EA05 FA02 GA02 3E067 AA11 AB01 AC01 BA02A BB16A BC03A CA18 EE39 EE50 FA01 FB13 FC01 GA11

Claims (4)

[Claims] A flange (2) is formed on the upper edge of an opening of a bottomed cylindrical container body (3), and a vertical rib (7) is radially formed on an outer peripheral surface of the container body (3). In the heat-insulating container for food formed by injection molding, a concave and convex perforated line (13a) is formed on the inner peripheral surface of the container body (3) and near the upper edge of the opening. In addition, the reinforcement is formed by forming the peripheral wall (3a) in an uneven shape below the perforated line (13a) and at one position or more at the center position from the bottom surface of the container body (3) to the upper edge of the opening. Insulating container for food, characterized in that the means is provided in the circumferential direction of the container body (3). 2. The heat insulating container for food according to claim 1, wherein the reinforcing means is formed so that the peripheral wall (3a) is continuous in a stepwise manner. 3. The peripheral wall (3a) has an upper peripheral wall (9).
a) and the lower peripheral wall portion (9b) have a horizontal annular connection portion (1).
0), and is formed so as to be continuous in a stepwise manner with an auxiliary piece (1) at the lower end of the upper peripheral wall portion (9a).
4) is extended downward so as to have a predetermined interval with the lower peripheral wall portion (9b), and both ends of each auxiliary piece (14) are connected to each rib (7), and the connection portion is formed. The heat insulating container for food according to claim 1, wherein the reinforcing means comprises the (10) and the auxiliary piece (14). 4. The heat insulating container for food according to claim 1, wherein the reinforcing means is provided at a height of 50 to 70% from the bottom surface (3b) to the upper edge of the opening.