JPH0532140Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a bag that can be inflated by filling it with gas generated by a chemical reaction and used as a floating ring, an air pillow, or an air mat.

[Conventional technology]

A bag that is inflated by filling it with gas generated by the chemical reaction described above is known as described in Japanese Utility Model Application No. 62-30899 filed by the present applicant. .

This involves sealing an acidic or alkaline solution into a container, enclosing this container together with powder of an alkaline substance or acidic substance in an inner bag that ruptures when filled with carbon dioxide gas, and then making the inner bag airtight. It is enclosed in an outer bag with a When the container is damaged by external force and the acidic or alkaline solution flows out, it reacts with the powder of the alkaline substance or acidic substance in the inner bag and generates carbon dioxide gas, causing the inner bag to expand to its full capacity. It ruptures at the same time, further inflating the outer bag to its full capacity.

[Problem that the invention aims to solve]

By the way, in the case of a bag that expands due to the chemical reaction described above, after the acidic or alkaline solution mixed with powder of an alkaline or acidic substance generates carbon dioxide gas, the residual liquid remains inside the outer bag, so Each time the bag is moved, the liquid moves, causing discomfort, and if the outer bag ruptures for some reason, the remaining liquid will flow out.

The present invention aims to solve the above-mentioned problems, and its purpose is to insert a polymer absorbent material inside the outer bag that absorbs the liquid after a predetermined period of time or gradually after coming into contact with the liquid. After the chemical reaction is completed and the outer bag is completely inflated,
Excess liquid is absorbed by the polymeric absorber and thus
To provide a bag body inflated by a chemical reaction in which liquid does not remain in the outer bag.

[Means for solving problems]

The present invention aims to achieve the above-mentioned object, and its means include a container that is sealed with an acidic or alkaline solution and can be opened by external force, and a container that reacts with the acidic or alkaline solution when opened. an inner bag in which a powder of an alkaline or acidic substance that generates carbon dioxide gas and the container are enclosed; A reaction prevention bag or a polymer absorber with a slow solution absorption time that ruptures when the solution is absorbed by the molecular absorber and expands, and the inner bag and a reaction prevention bag or a polymer absorber with a slow solution absorption time are stored. The problem is solved by using an outer bag that is airtight.

(Function) The bag body that expands due to the chemical reaction of the present invention described above is opened by pressing the container with a finger or the like from the outside of the outer bag, so that the acidic solution or alkaline solution inside the container flows out. The acidic substance or alkaline substance powder in the inner bag mixes to generate carbon dioxide gas, which inflates and ruptures the inner bag, further inflating the outer bag. When the mixture of the powder and the solution flows into the outer bag, the mixture permeates into the reaction prevention bag sealed in the outer bag and the polymer sealed in the reaction prevention bag. The absorbent body absorbs the mixed liquid, or the polymeric absorbent body that is directly sealed in the outer bag and has a slow solution absorption time gradually absorbs the solution, and when the outer bag is sufficiently swollen, the polymeric absorbent body Since all of the remaining mixed liquid is absorbed and no fluid remains inside the outer bag, it is possible to eliminate the discomfort of the fluid moving even when the outer bag is shaken, and the outer bag is Even if it ruptures for some reason, fluid will not be ejected.

[Example of idea]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the first embodiment, in which 1 is a flanged container made of hard synthetic resin, and an acidic solution 2 of an organic acid such as tartaric acid or citric acid, which is not dangerous to the human body, is pulverized inside the container. At the same time, a sealing material 3 such as aluminum foil or a thin synthetic resin film that can be opened by external pressure is welded to the opening flange of the container 1 by means such as heat fusion, and the solution is filled with the solution. 2 is included.

4 is an alkaline substance such as a bicarbonate such as powdered sodium bicarbonate (baking soda), and 5 is an inner bag in which the alkaline substance 4 and the container 1 are sealed together, and the sealing material 3 of the container 1 is sealed. It is made of a thin synthetic resin film that is so thin that it will burst if it is broken and filled with carbon dioxide gas generated by a chemical reaction between the alkaline substance 4 and the acidic solution 2.

Reference numeral 6 denotes a reaction blocking bag made of a material such as paper or non-woven fabric through which liquid can penetrate, and the interior thereof is filled with a polymer absorbent 7 (FIG. 2).

Reference numeral 8 designates an outer bag made of synthetic resin in which the inner bag 5 and the reaction prevention bag 6 are sealed together, and the bag expands to its full capacity due to the amount of carbon dioxide gas generated by the chemical reaction, but does not burst. It is made of non-porous synthetic resin and has a thickness that makes it completely dry.

The operation will be explained based on the above configuration. When the sealing material 3 of the container 1 is broken from above the outer bag 1 by pressing force, the acidic solution 2 flows from the container 1 into the inner bag 5.
The alkaline substance 4 is mixed with the alkaline substance 4. As a result, a chemical reaction occurs and carbon dioxide gas is generated, so that the inner bag 5 continues to expand and eventually ruptures. If an inner bag made of a material with low elasticity is used when the bag bursts, a popping sound will be generated, which will amuse or surprise the user.

After the inner bag 5 ruptures, the carbon dioxide gas inflates the outer bag 8, but as the inner bag 5 ruptures, the acidic solution 2 mixed with the alkaline substance 4 flows out into the outer bag 8. The solution gradually permeates into the reaction inhibiting bag 6 and is absorbed by the polymer absorbent body 7 inside, and the polymer absorbent body begins to expand. This absorption progresses gradually until the reaction prevention bag 6 ruptures and the polymer absorber 7 is exposed and rapidly absorbs the solution, absorbing all of the remaining solution in the outer bag 8. (See Figure 3). At this time, the outer bag 8 is fully inflated.

Note that the time it takes for the outer bag 8 to expand to its full capacity varies depending on the amount of the acidic solution 2 and the alkaline substance 4 and the size of the outer bag 8. It goes without saying that the amount of molecular absorber 7 should be appropriately selected and adjusted so that all of the solution is absorbed before the outer bag 8 is fully inflated and the chemical reaction does not end before it is completed.

FIG. 4 shows a second embodiment, and the difference from the first embodiment is that the inner bag 5 in the first embodiment is placed inside the second inner bag 5' containing the acidic solution 2'. At the same time, this second inner bag 5' is enclosed in an outer bag 8 together with an alkaline substance 4'.

A chemical reaction progresses within the inner bag 5, and after the inner bag 5 ruptures, a chemical reaction occurs within the second inner bag 5', and when the second inner bag 5' ruptures, the outer bag A sufficient chemical reaction is carried out in several stages, such as in the bag 8.

Therefore, since the chemical reaction time becomes longer, a large bag can be inflated.
In addition, in the case of this embodiment, since there is a large amount of solution remaining in the outer bag 8, the amount of the polymer absorber 7 is
It is necessary to have more than that in the embodiment.

In the above-mentioned embodiment, the acidic solution 2, the inner bag 5, and the powder of the alkaline substance 4 are sealed in the second inner bag 5' in the container 1.
The container 1 may contain an alkaline solution, the inner bag 5, and the second inner bag 5' may contain an acidic substance powder.

In addition, the polymer absorber 7 in the above-mentioned example
(acrylic resin or small particles of acrylic resin mixed with starch) that has a relatively quick moisture absorption time, so in order to give the outer bag 8 enough time to expand, the reaction prevention bag 6 is used. Therefore, the time for the polymer absorber 7 to absorb water is slowed down, but the polymer absorber 7 has a slow water absorption time.
(If you use the same material as above but in large particles),
Even if the inner bag ruptures and the alkaline or acidic solution flows into the outer bag 8 and the polymer absorber 7 immediately starts absorbing the solution, it will take a long time to absorb all the solution, so there is no sufficient reaction time. Therefore, since the outer bag 8 can absorb all of the remaining solution in a sufficiently swollen state, the first
The reaction prevention bag 6 shown in FIGS. 4 and 4 becomes unnecessary.

[Effect of idea]

As described above, the present invention inflates the outer bag using a gas generating means that causes a chemical reaction when the container is damaged and generates carbon dioxide gas, and also uses the gas generating means to absorb liquid into the outer bag. Since it is enclosed in the outer bag together with the generation means, all the liquid inside the outer bag is absorbed when the outer bag is fully inflated, so it is possible to eliminate the discomfort of the liquid moving even when the outer bag is shaken. Additionally, even if the outer bag ruptures for some reason, liquid will not come out.

[Brief explanation of the drawing]

The figures show an embodiment of a bag that expands due to a chemical reaction according to the present invention, FIG. 1 is a transparent perspective view of the first embodiment, FIG. 2 is a perspective view of a reaction prevention bag enclosed in the same, FIG. 3 is a characteristic diagram showing a state in which the reaction prevention bag described above absorbs liquid, and FIG. 4 is a transparent perspective view of the second embodiment. 1... Container, 2, 2'... Acidic or alkaline solution, 4, 4'... Powder of alkaline substance or acidic substance, 5... Inner bag, 5'... Second inner bag,
6... Reaction blocking bag, 7... Polymer absorber, 8...
...outer bag.

Claims (1)

[Claims for Utility Model Registration] (1) A container filled with an acidic or alkaline solution that can be opened by external force, and when the container is opened, it reacts with the acidic or alkaline solution to generate carbon dioxide gas. An inner bag containing a powder of an alkaline substance or an acidic substance and the container is enclosed with a polymer absorber, and when it comes into contact with the acidic solution or alkaline solution, the solution is absorbed into the polymer absorber after a predetermined period of time. 1. A bag that expands due to a chemical reaction, comprising a reaction prevention bag that ruptures due to absorption and expansion, and an airtight outer bag in which the inner bag and the reaction prevention bag are housed. (2) A container filled with an acidic or alkaline solution that can be opened by external force, and a powder of an alkaline or acidic substance that reacts with the acidic or alkaline solution to generate carbon dioxide gas when the container is opened. an inner bag in which the container is enclosed; a polymer absorbent body that gradually absorbs the acidic solution or alkaline solution reacted with the powder of the alkaline substance or acidic substance; and the inner bag and the polymer absorbent body are housed. A bag body inflated by a chemical reaction, characterized by comprising an outer bag having airtightness.