JPH08207969A - Insulating container for instant food - Google Patents

Abstract

PURPOSE: To obtain an insulating container for instant food which has an exceedingly excellent insulating effect, high printing-effect and blocking-prevention effect, and automation suitability, by sticking a surface insulating cover with many longitudinal recesses to the periphery of a paper container main body which is resistant to water. CONSTITUTION: A container comprises a paper container main body 1 which is resistant to water, and a surface insulating plate cover 2 in which many longitudinal recesses 6 are made at intervals, outward ribs 1A are laterally formed on the periphery of the paper container main body 1, and the surface insulating plate cover 2 is stuck to the periphery of the container main body 1. Also, wide parts 7 which are outwardly raised and curved are formed between the recesses 6 of the surface insulating cover 2, to provide spaces 10 which communicate with the paper container main body 1 and the surface insulating cover 2. Further, the surface insulating cover 2 is not in close contact with the container main body 1, except the edge 3 of its upper end and the edge 11 of its lower end, and a small gap is made between the projecting upper edge 4 of the container main body 1 and the edge 3 of the upper end of the surface insulating cover 2, thereby allowing air to flow between the container main body 1 and the surface insulating cover 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-insulating container for instant foods used for packaging instant noodles and other instant foods.

[0002]

2. Description of the Related Art Insulation containers for instant foods used for packaging instant noodles include those made of foamed synthetic resin and those made of water-resistant processed paper. The former does not require a special structure for heat insulation because it has a heat insulation effect. The latter does not have an adiabatic effect on its own and therefore requires a special construction for insulation. As a special structure for this heat insulation, it is known that a corrugated plate-shaped surface heat insulating plate cover is attached to the outside of the peripheral wall of a water-resistant paper container body, and the container body is further corrugated. It is also known to have a plate shape and a flat surface cover.

The known water-resistant paper-made heat insulating container uses a corrugated plate for either the container body or the surface insulating plate cover, and an air insulating layer is provided between the container body and the surface insulating plate cover. Configured. On the other hand, this food container prints the product name, raw material name, etc. on the surface, and there is no problem in the case of a relatively large print display. For example, the above raw material name, contents, manufacturing date, cooking method Etc. are often displayed with relatively small characters, and when these are displayed on the corrugated plate portion, it is difficult to see.

In view of the above-mentioned problems, the inventor has developed a new heat insulating container which makes it easy to see the display portion displayed by relatively small characters so that the printing effect can be improved, and which has a high heat insulating effect. Japanese Patent Application No. 5-10717
Proposed by No. 0. That is, this already-developed and proposed heat-insulating container for instant foods has a surface heat-insulating plate cover formed by processing a number of corrugated plate-like or inwardly protruding parts on the outer surface of the peripheral wall of the water-resistant paper container body. The container is attached to form a gap that communicates between the container body and the surface insulating plate cover, and the gap is provided without tightly contacting the upper and lower edges of the surface insulating plate cover with the container body. It is configured to generate air circulation between the main body and the surface heat insulating plate cover, and a relatively wide flat plate portion is formed in a part of the surface heat insulating plate cover so that the printed display of the flat plate portion can be easily seen. .

Furthermore, the inventor has further improved the heat insulating property, makes it easier to see the display portion displayed by relatively small characters to improve the printing effect, and at the same time, provides the heat insulating container which is suitable for automation by an automatic machine. It was developed and already proposed by Japanese Patent Application No. 6-268012. That is, the heat-insulating container for instant food that has been developed and proposed has a structure in which a large number of vertical recesses are formed in the surface heat-insulating plate cover, and the surface heat-insulating plate cover is attached to the peripheral wall of the container body. From the overall configuration of the vertical groove of the surface insulating plate cover, the size of the flat plate portion between these vertical grooves, and the height from the container body, when a person grips this container, the fingers of the person are There is no danger of getting into the groove, and even if the flat plate part is gripped, the flat plate part does not deform so much that the flat plate part does not come into contact with the container body. None, high printing effect is obtained. Furthermore, the heights of the upper and lower edges of the surface heat insulating plate cover from the container body are made different, and the height of the lower edge is increased, so that even when stacking, the separating function is enhanced and the risk of blocking is reduced. There is.

[0006]

The characteristics of the heat-insulating container for instant foods, which have been already proposed by the inventor, that is, the high printing effect, the blocking-preventing effect and the suitability for automation are maintained as they are, and the heat insulating property is further improved. There was a problem that a heat insulating container was required. SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a heat-insulating container for instant foods, which has an extremely excellent heat insulating effect and also has a high printing effect, a blocking preventing effect, and an automation suitability.

[0007]

In order to achieve the above object, according to the present invention, a water-resistant paper container body and a surface heat insulating plate cover having a plurality of vertical recesses formed at intervals are formed. Then, outward ribs are formed laterally on the peripheral wall of the paper container main body, and a surface heat insulating plate cover is adhered to the peripheral wall of the paper container main body. A bulging wide portion is formed, and a gap communicating between the paper container body and the surface heat insulating plate cover is formed by the wide portion, and the space between the upper and lower edges of the surface heat insulating plate cover and the container body is formed. Without adhering to each other, and a slight gap is provided between the upper edge protruding portion of the container body and the upper edge of the surface heat insulating plate cover, so that air can flow between the container body and the surface heat insulating plate cover. It is characterized by being.

It is characterized in that the outward ribs are provided around the peripheral wall. The number of the outward ribs may be plural or one. It is preferable that the uppermost outward rib of the plurality of outward ribs also serves as the hot water supply line, and it is effective that one outward rib also serves as the hot water supply line. The height from the container body of the upper edge of the surface heat insulating plate cover, and the height from the container body of the lower edge also, the surface heat insulating plate cover of the container body so that the height of the lower edge is higher than the height of the upper edge. It is characterized in that it is inclined with respect to the surface.

The heat-insulating container for instant food of the present invention comprises a water-resistant paper container body and a surface heat insulating plate cover having a plurality of vertical recesses formed at a plurality of intervals, and the peripheral wall of the paper container body. An outward rib is formed laterally on the paper, and a surface heat insulating plate cover is adhered to the peripheral wall of the paper container body. A gap is formed to communicate between the container body and the surface heat insulating plate cover, the upper edge and the lower edge of the surface heat insulating plate cover are not in close contact with the container body, and the upper edge protruding portion of the container body is Since a gap is provided between the upper edge of the surface heat insulating plate cover and the upper surface of the surface heat insulating plate cover to allow air to flow between the container body and the surface heat insulating plate cover, it has an extremely excellent heat insulating effect.

Further, in the instant food heat insulating container of the present invention, the strength of the heat insulating container is improved because the outward ribs are wound around the peripheral wall. The height from the container body of the upper edge of the surface heat insulating plate cover, and the height from the container body of the lower edge also, the surface heat insulating plate cover of the container body so that the height of the lower edge is higher than the height of the upper edge. Since it is inclined with respect to the surface, there is little risk of blocking even in stacking, and it has automation suitability.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the heat insulating container for instant food of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment in which three outward ribs are provided. Reference numeral 1 in the figure
Is a water-resistant paper container body, the constitution of which uses a base paper of 250 to 300 g / m ^{2 as} a base material, and an inner surface of 20 to 3 g.
Polymerized 0 μ polyethylene film is used. Outer ribs 1A described later are formed on the peripheral wall of the paper container body 1. In the figure, reference numeral 2 denotes a surface heat insulating plate cover, which uses a base paper of 160 to 200 g / m ² , and the surface heat insulating plate cover 2 is processed with a large number of vertical recessed lines 6 described later. Then, the surface heat insulating plate cover 2 has the upper edge 3
Are provided in the container body 1 at intervals slightly below the upper edge projecting portion 4 of the container body 1.

The paper container main body 1 is formed with an outward rib 1A having a width of about 4 mm, which circulates the peripheral wall of the paper container main body 1. In the figure, the outward ribs 1A are formed laterally at three locations near the upper end of the peripheral wall, near the center and near the lower end,
The elongated outer top surface is about 0.5 mm higher than the outer surface of the peripheral wall. In addition, it is preferable that the elongate outer top surface be higher in the lower side in the order of near the upper end of the peripheral wall and in the vicinity of the center and the lower end. Of these three outward ribs 1A, it is effective to use the highest outward rib 1A as a hot water supply line. The surface heat insulating plate cover 2 is formed by processing a large number of vertical recessed lines 6 at intervals, and a flat plate-shaped wide portion 7 is formed between these vertical recessed lines 6, 6 to deform as a whole. It has a corrugated shape. The surface heat insulating plate cover 2 is adhered to the peripheral wall surface of the paper container body 1,
Specifically, the intersection of the slender inner top surface of the vertical groove 6 and the slender outer top surface of the outward rib 1A may be adhered, or the container body 1 which is not the outer top surface of the outward rib 1A. May be adhered to the outer surface of. Then, the container body 1 and the wide portion 7
A gap 10 is formed so as to communicate with the above and below. Further, a gap 8 is formed between the wide portion 7 of the upper end edge 3 of the surface heat insulating plate cover 2 and the container body 1, and a gap 9 is formed also at the lower end edge 11 by these gaps 8, 9 and 10. Air circulation between the container body 1 and the surface heat insulating plate cover 2 is made good.

If a slender outer top surface of the lateral outward rib 1A of the container body 1 and an elongated inner top surface of the vertical concave 6 of the surface heat insulating plate cover 2 are brought into contact with each other to form a heat insulating container, It is possible to obtain an extremely excellent heat insulation effect.

Then, for example, by adjusting the vertical concave width of the surface heat insulating plate cover 2 and the height from the container body,
The extremely excellent heat insulation effect described above can be utilized more effectively. That is, the width w of the vertical groove 6 does not allow human fingers to enter.
It is set to be less than or equal to mm, preferably about 3 mm, thereby preventing human fingers from coming into contact with the bottom of the vertical groove 6 that is in direct contact with the container body 1. Regarding the width W of the wide portion 7, the upper part of the surface heat insulating plate cover is wide and the lower part is narrow, but the width W at a position approximately one-third of the upper part that is gripped by a human hand is 2 4 times, that is, within the range of 2w to 4w.

Further, the upper edge 3 of the surface heat insulating plate cover 2
The height h of the lower edge 11 from the container body 1 and the height H of the lower edge 11 of the container body 1 from the container body 1 are
The surface heat insulating plate cover 2 is inclined with respect to the surface of the container body 1 so as to be higher than the height (see FIG. 4). The height h of the upper edge 3 of the surface heat insulating plate cover 2 from the container body 1
Is in the range of 0.8 to 1.5 mm, and the height H of the lower edge 11 is in the range of 1.6 to 2.3 mm. That is, the width w of these vertical recesses 6, the width W of the wide portion and the height h.
From the relationship between the dimension ranges of H and H and the above-mentioned base paper material, when the wide portion 7 is gripped, the deformation of the hollow portion is reduced, and the extremely excellent heat insulating effect of the present invention can be more effectively exhibited, and the stacking is possible. It can prevent the blocking during the drowsiness.

Further, the gap d between the upper edge protruding portion 4 of the container body 1 and the upper edge 3 of the surface heat insulating plate cover 2 is 0.5 to.
The width D of the upper edge protruding portion 4 is set within the range of 1.5 mm.
Is more than twice the height h of the upper edge 3 of the surface heat insulating plate cover 2 from the container body 1. That is, since the height h of the upper edge 3 from the container body 1 is set in the range of 0.8 to 1.5 mm, the dimension of the width D is set to 2.5 mm or more. The amount of overhang is large and the retainer of the automatic machine is good.

FIG. 8 shows an embodiment in which the wide portion 7 is inflated and curved until its cross section becomes substantially like a drum bridge. In addition to the above-described heat insulating effect, printing effect, and suitability for automation, this heat insulating container can give a person a preferable feeling when gripped by a person.

By forming the outward ribs on the container body, not only the heat insulating effect is improved but also the strength of the container body is improved, and it is possible to prevent a person from easily deforming the grip of the heat insulating container. Even if the outward ribs are formed on the entire surface of the peripheral wall of the container body, since the surface heat insulating plate cover is formed with a large number of vertical concaves, corrugated plates or inward convexes, the wide portions between the concave lines are formed. With this, it is possible to secure a gap that communicates vertically between the container body and the surface heat insulating plate cover.

Further, FIG. 9 shows an embodiment in which only one outward rib 1A is provided, and this outward rib 1A is also provided.
Shows what is provided as a hot water supply line. In this case, in the lower part of the container, the inner top surface of the vertical groove 6 of the heat insulating plate cover 2 may be bonded to the surface of the container body 1.

The inventor manufactured an instant food heat insulation container having the following constitution and dimensions, put hot water into the container, and tested whether the physical characteristic values of the snack noodle container, which is the standard of the Food Agency, are cleared. did. By the way, the above physical characteristic values are: Hot water (93 ° C to 95 ° C, the same applies below) should be placed in an empty container and heat resistant so that the container will not deform even after 15 minutes. 2. Immediately after putting hot water in the product, the surface temperature of the outer wall should be 75 ° C or less, and should be heat insulating.

[0021]

EXAMPLE The following was used for the paper container body 1. Paper thickness 0.32mm (280g
/ M ² ) Inner surface polyethylene film 25μ Upper diameter 99.4 mm Lower outer diameter 65.7 mm Container height 109.5 mm Full capacity 500 ml Weight 11.9 g The following were used for the surface heat insulating plate cover. Paper thickness 0.20 mm (190 g
/ M ² ) The width w of the vertical groove 6 is 4.0 mm The depth of the upper part of the vertical groove 6 is 1.1 mm The depth of the lower part of the vertical groove 6 is 1.9 mm The width W of the upper part of the wide part 7 is 9.3 mm Wide Width W of the lower part of the portion 7 was 6.5 mm. Hot water was put into an embodiment product having a configuration and dimensions and the heat resistance and heat insulation properties thereof were measured. Heat resistance No deformation after 15 minutes. Adiabaticity Time (min) after pouring hot water Surface temperature (° C) Immediately after 67 1 70 5 66 66 10 60 15 54 3 minutes after pouring hot water Time to be held by hand 62 seconds

As described above, the above-mentioned examples sufficiently satisfied the physical characteristic values of snack noodles, which is the standard of the Food Agency.

[0023]

The heat-insulating container for instant food of the present invention comprises a water-resistant paper container main body and a surface heat insulating plate cover having a plurality of vertical recesses formed therein. Outwardly formed ribs on the peripheral wall of the paper container, the surface heat insulating plate cover is adhered to the peripheral wall of the paper container body, and the wide portion that bulges outwardly between the recesses of the surface heat insulating plate cover A space is formed that connects the body of the paper container and the surface insulating plate cover, and the upper and lower edges of the surface insulating plate cover are not in close contact with the container body, and the upper edge of the container body is stretched. A slight gap is provided between the outlet and the upper edge of the surface heat insulating plate cover, and air is generated between the container body and the surface heat insulating plate cover. Have. Further, since the wide portion is provided, a high printing effect is obtained.

Since the outward ribs are wound around the peripheral wall of the container body, they have the effect of enhancing the heat insulating effect and the strength of the container body. The height from the container body of the upper edge of the surface heat insulating plate cover, and the height from the container body of the lower edge also, the surface heat insulating plate cover of the container body so that the height of the lower edge is higher than the height of the upper edge. Since it is inclined with respect to the surface, it has an effect of preventing blocking.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a heat insulating container of the present invention having three outward ribs.

FIG. 2 is a half sectional front view of the same.

FIG. 3 is a front view of a half section, similarly exploded.

FIG. 4 is an enlarged cross-sectional view of an essential part showing a state in which they are also overlapped.

FIG. 5 is a partially enlarged cross-sectional view showing a developed state of an embodiment of a surface heat insulating plate cover.

FIG. 6 is a partially enlarged cross-sectional view of a developed state of another embodiment of the surface heat insulating plate cover.

FIG. 7 is a partially enlarged cross-sectional view showing a developed state of another embodiment of the surface heat insulating plate cover.

FIG. 8 is a partially enlarged cross-sectional view showing a developed state of still another embodiment of the surface heat insulating plate cover.

FIG. 9 is a half cross-sectional front view showing an embodiment of the heat insulating container of the present invention having one outward rib.

[Explanation of symbols]

 1 Paper Container Main Body 1A Outward Rib 2 Surface Insulation Plate Cover 3 Top Edge 4 Top Edge Overhang 6 Vertical Groove 7 Wide Section 8 Gap 9 Gap 10 Gap 11 Bottom Edge

Claims (9)

[Claims] 1. A paper container main body having water resistance and a surface heat insulating plate cover having a plurality of vertical recesses formed at a plurality of intervals. An outward rib is laterally provided on a peripheral wall of the paper container main body. The surface insulating plate cover is adhered to the peripheral wall of the paper container main body, and a wide portion bulging outward is formed between the recesses of the surface insulating plate cover. A gap is formed to communicate between the container body and the surface heat insulating plate cover, the upper edge and the lower edge of the surface heat insulating plate cover are not in close contact with the container body, and the upper edge protruding portion of the container body is A heat-insulating container for instant foods, characterized in that a slight gap is provided between the upper edge of the surface heat insulating plate cover and air to generate air flow between the container body and the surface heat insulating plate cover. 2. The heat-insulating container for instant foods according to claim 1, wherein the outward ribs are provided around the peripheral wall. 3. The heat-insulating container for instant foods according to claim 2, wherein the outward facing ribs are plural in number. 4. The uppermost outward rib of the plurality of outward ribs also serves as a hot water supply line.
Heat-insulating container for instant food as described. 5. The heat-insulating container for instant foods according to claim 2, wherein the outward rib is one. 6. The heat-insulating container for instant foods according to claim 5, wherein the one outward rib also serves as a hot water supply line. 7. The surface heat insulating plate so that the height of the upper edge of the surface heat insulating plate cover from the container body and the height of the lower edge of the cover from the container body are higher than the height of the upper edge. The heat-insulating container for instant food according to claim 1, wherein the cover is inclined with respect to the surface of the container body. 8. The wide portion is formed in a flat plate shape.
8. A heat-insulating container for instant food according to any one of 7 to 7. 9. The heat-insulating container for instant food according to claim 1, wherein the wide portion has a substantially drum-shaped bridge cross section.