JPH0425083Y2 - - Google Patents

Description

[Detailed description of the invention] ≪Industrial application field≫ This invention relates to a heating container using an exothermic agent such as quicklime, and can be used to store liquid foods and drinks such as soup, miso soup, milk, coffee, and sake, cooked rice, potatoes, etc. Vegetables such as carrots, meat such as beef and pork, solid or semi-solid foods and drinks such as fish and shellfish, canned or bottled foods, and bags made of synthetic resin or aluminum laminated with synthetic resin. The present invention relates to a heating container for heating food and drink, and particularly to one with an improved water pouring means.

≪Prior Art≫ Various attempts have been made to heat various foods and drinks using the heat of the hydration reaction between quicklime and water.
An example of this is disclosed in Publication No. 54382.

However, in the heating container described in the same issue, an opening that can be opened for injecting water is provided at the top of the container, and when it is used, the opening is opened and water is injected into the quicklime, so the hydration reaction This has the disadvantage that hot steam spews out from the opening, and when used outdoors, it is necessary to carry water separately.

Therefore, as seen in, for example, Japanese Utility Model Publication No. 57-2867, a container has been proposed in which water for the hydration reaction is contained in the container and the water is broken with an opening needle.

However, the water injection means disclosed in this publication is broken by piercing the water bag with an opening needle, but according to this, the hole in the water bag that is torn has a diameter that is approximately the same as the outer diameter of the opening needle. As a result, the amount of water supplied at the beginning of the hydration reaction is insufficient, and not enough water is distributed throughout the quicklime, and a large amount of unreacted quicklime remains, making it impossible to raise the temperature of the object to be heated sufficiently.

In addition, if the amount of water supplied to quicklime per unit time is initially insufficient, the quicklime that reacts near the outlet of the water bag becomes slaked lime, and the slaked lime absorbs the water released from the pores. The hydration reaction takes place only in a relatively narrow area around the quicklime, making it extremely difficult to apply it to heating solid or semi-solid foods and drinks, which requires a large amount of heating energy.

In order to solve these conventional problems, the inventors of the present invention have developed a heating container suitable for large-scale hydration reactions, and have already proposed it in Utility Model Application No. 118819/1983.

In the heating container according to this application, a belt-shaped water bag is used as a means for injecting water into the exothermic agent, and when in use, one end of the water bag is opened and the bag is pulled out to the other end, so that the amount of water to be injected at the initial stage of the reaction of the exothermic agent can be adjusted. However, subsequent studies revealed that this water injection method had the following problems.

≪Problems to be solved by the invention≫ That is, in the heating container of the above application, a heat generating agent is placed on the top of a band-shaped water bag and an inner container containing an object to be heated is placed, and the container portion and the lid portion of the container are connected to each other. In use, with both ends of the band-shaped water bag held between them, one end is broken and pulled out to the other end, but it is said that it is not easy to pull out the band-shaped water bag, which is bent to follow the shape of the container. There was a problem.

This invention was made in view of these problems, and its purpose is to provide a water bag for a heating container that can be easily broken and pulled out.

≪Means for solving the problem≫ In order to achieve the above-mentioned purpose, this invention uses a heat-generating agent housed in a container and a water bag filled with water used for the hydration reaction of the heat-generating agent. A heating container for injecting water into the exothermic agent by rupture of the water bladder to heat an object to be heated by the heat of hydration reaction of the exothermic agent, wherein the water bladder is composed of a sheet of synthetic resin; , this sheet is formed into a band shape by providing vertical and horizontal heat-sealing lines and enclosing the water, and forming a tearing notch that is longer than the width of the vertical heat-sealing line in a direction substantially perpendicular thereto. , another heat seal line was provided surrounding the outside of the notch.

<<Function>> According to the water bag for heating containers having the above configuration, since the notch is provided in the direction substantially perpendicular to the longitudinal heat seal line of the band-shaped water bag and is longer than the width of the seal line, it is possible to pull the end of the water bag. It can be easily broken.

In addition, the band-shaped water bladder is separated into two parts due to the breakage, and the length thereof is shortened, so that it can be easily pulled out.

<<Example>> Hereinafter, preferred embodiments of this invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an overall view of a heating container using a water bag for a heating container according to this invention.

The heating container shown in the figure is roughly composed of an insulating container 20, a band-shaped water bag 22, a water-permeable bag body 28 that stores a flat water bag 24 and quicklime 26, and an inner container 30 that stores food and drinks that are heated objects. It is configured.

The insulation container 20 is made of paper, plastic, glass,
It is a box-shaped or cylindrical container assembled from plates of ceramics, metal covered with a heat insulating material, etc., and is composed of a container part 20a with an open top end and a lid part 20b that closes the container part 20a.

Flat water bag 24 housed within a water permeable bag body 28
is made of synthetic resin film, etc., and is made of quicklime 2.
It is placed above the quicklime 26, and is placed above the quicklime 26.
It may be at the center of The material of the water-permeable bag 28 may be paper, cloth, etc., which allows water to easily pass through the entire surface.
Although non-woven fabric is used, other materials may also be used, such as aluminum foil or a synthetic resin film pasted on aluminum foil, which wraps the quicklime 26 and the flat water bag 22, and at least holes 28a are drilled in the bottom surface to allow water to pass through. It may be made to have a characteristic, and this is illustrated in the drawings of this embodiment.

The inner container 30 is most preferably molded from a metal foil such as aluminum, but may also be a laminate of a synthetic resin film and a metal foil, or a heat-resistant synthetic resin film. In addition, in the case of a food or drink such as a Japanese lunch box in which cooked rice and vegetables are stored separately, a partition is provided to separate the cooked rice and vegetables, or the medium container 30 is divided into a plurality of parts and stored in the insulated container 20. It turns out.

As shown in FIG. 1, the lid part 20b of the heat insulating container 20 is inserted into the opening of the container part 20a so as to press both ends of the band-shaped water bladder 22 hanging down from the opening end of the container part 20a. It's covered.

2 to 5 show a plurality of examples of the band-shaped water bladder 22. FIG. The band-shaped water bag 22 shown in these figures is made by folding a rectangular sheet 22a of synthetic resin such as polyethylene, nylon, polyester, etc., welding its longitudinal ends with a vertical heat-sealing line 22b, and one horizontal heat-sealing line 22c. , vertical heat seal line 22b
A notch 22d for breaking is formed in the form of a cut line that is substantially orthogonal to
After applying water, inject water and seal the other side heat-sealed wire 2.
Perform step 2c' and seal.

The position of the notch 22d is the horizontal heat seal line 22.
It may be located anywhere between c and 22c', but preferably at a location A corresponding to the corner of the container portion 20a when the water bag 22 is placed along the inside of the container portion 20a as shown in FIG. It is to let

In addition, the length of the notch 22d is the length of the vertical heat seal line 2.
There is no problem as long as the width is longer than the width of the water bag 22, but preferably it is about 1/2 the width of the water bag 22, and the heat seal line 22e surrounding this is semicircular as shown in FIGS. 2 to 4. The notch 22d and the seal line 2
2e, or leave a space between the
As shown in the figure, it may be buried within the seal line 22e.

Furthermore, the notch 22d may be provided across the vertical heat sealing line 22b as shown in FIGS. 2 and 3, or at a position unrelated to the longitudinal heat sealing line 22b as shown in FIGS. 4 and 5. .

When using the heat-generating container configured as described above, after placing an object to be heated, such as food or drink, in the inner container 30, the container is covered with a lid as shown in FIG.

Next, the end of the band-shaped water bag 22 on the side where the notch 22d is provided is pulled, and after breaking it from the notch 22d, the water bag 22 is pulled out by holding the other end.

As a result, the water released into the container part 20a passes through the water-permeable bag body 28 and comes into contact with the quicklime 26, causing a hydration reaction, and this reaction heat causes the flat water bag 24 to
is melted to release water again, thereby further promoting the reaction of the quicklime 26.

The heat generated by the reaction of the quicklime 26 is transferred to the medium container 3.
0 to the object to be heated, and heats it to a predetermined temperature.

Here, when the band-shaped water bag 22 is to be broken, it can be easily broken because the notch 22e is provided, and when the water bag 22 is broken from the notch 22e, the water bag 22 is separated into two pieces. , it also becomes easier to pull out.

<<Effects of the invention>> As explained in detail in the examples above, according to the water bag for a heat-generating container according to this invention, the water bag used for the hydration reaction with the exothermic agent can be easily and reliably broken and pulled out. You can get excellent results.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a heating container using the water bag of the present invention, and Figures 2 to 5 are four different views of the water bag of the present invention.
It is an explanatory view showing an aspect. 20... Insulated container, 22... Band-shaped water bag, 22a
... Sheet, 22b ... Vertical heat seal line, 22c,
22c'...Horizontal heat seal wire, 22d...Notch, 2
2e...Heat seal wire.

Claims (1)

[Scope of utility model registration request] The exothermic agent is equipped with an exothermic agent housed in a container and a water bag filled with water used for the hydration reaction of the exothermic agent, and when the water bag breaks, water is poured into the exothermic agent. In the heating container that heats the object to be heated by the heat of hydration reaction, the water bag is composed of a synthetic resin sheet, and this sheet is
Vertical and horizontal heat-sealing lines are provided and the water is sealed to form a band shape, and a breaking notch longer than the width of the vertical heat-sealing line is formed in a direction substantially perpendicular thereto, and the outside of the notch is A water bag for a heating container, characterized in that it is provided with another heat-sealing line surrounding the water bag.