JPH0537815Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a gas generating device suitable for use in an inflatable bag that automatically inflates.

[Prior Art] Conventionally proposed devices of this type include those described in, for example, Japanese Utility Model Publication No. 42-6533 and Japanese Unexamined Patent Publication No. 56-139787.

As shown in FIG. 3, these prior art techniques include an inflatable bag body in which an inflatable bag body 10 is enclosed with baking soda 11 and a small container 12 which can be opened from the outside and contains an acidic solution. This product automatically expanded due to carbon dioxide gas generated when the enclosed baking soda and acidic solution came into contact with each other.

[Problems to be solved by the invention] However, in this conventional example, when the baking soda 11 was sealed inside the bag 10, the baking soda 11 was scattered inside the bag due to vibrations during transportation, and the acidic solution was encapsulated. When the small container 12 that can be opened from the outside is opened, since the baking soda is scattered inside the bag 10, it is difficult for the acidic solution flowing out from the small container 12 to come into contact with all of the baking soda in the scattered state. The baking soda 11 scattered by shaking the bag 10
The desired amount of carbon dioxide gas could not be generated unless it was brought into contact with all of the above. Therefore, it has been extremely difficult to generate large amounts of carbon dioxide gas in large bags or bags with complicated structures.

[Purpose of the invention] The purpose of this invention is to eliminate the drawbacks of the conventional example.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention uses a container 3 which is filled with an acidic substance solution 1A or an alkaline substance solution 2A and which can be opened from the outside to be filled with an alkaline substance 2 or an acidic substance 1. A large amount of gas is reliably generated while preventing the scattering of acidic and alkaline substances by storing them in a bag 4 made of a flexible material having gas permeability and water absorption properties. It is in.

[Example of the invention] As shown in Fig. 1, this invention is based on a solution 1A of an acidic substance 1 such as a non-hazardous organic acid such as tartaric acid or citric acid powdered in a flanged container 3 made of hard synthetic resin. is sealed with a sealing material 3A that can be opened from the outside, such as aluminum foil or a thin synthetic resin film, and an alkaline substance 2 such as hydrogen carbonate such as powdered sodium hydrogen carbonate (baking soda) is used to release the generated gas. A water-containing sheet member 4A made of, for example, open foam sponge, sponge, asbestos, cotton, etc., which has good permeability and water-retaining property, and a simple sheet member 4B are sealed in a bag body 4 formed by laminating them together as shown in FIG. Thus, a gas generator A according to the present invention is constructed.

As an example, an example was described in which a solution 1A of an acidic substance 1 such as an organic acid was sealed in the container 3, and an alkaline substance 2 such as hydrogen carbonate was sealed in the bag body 4 together with the container. A solution 2A of an alkaline substance 2 such as hydrogen carbonate may be sealed in the container 3, and an acidic substance 1 such as an organic acid may be sealed in the bag 4 together with the container 3.

Further, the container 3 as shown in Fig. 2 is formed by folding a plastic sheet in half to form a bag shape with a relatively large internal capacity, and a half-cut groove 3B with a cut line made up to half the wall thickness is provided on the side surface. It may also be something you have.

[Operation of the invention] The sealing material 3A that sealed the opening of the container 3 is broken from the outside of the bag body 4, and the acidic substance 1 sealed inside.
(or alkaline substance 2) each solution 1A, 2
A is reacted with an alkaline substance 2 such as hydrogen carbonate (or an acidic substance 1 such as an organic acid) sealed in the inner bag 10, and NaHCO ₃ +H ₂ O→NaOH + H ₂ CO ₃ H ₂ CO ₃ H ₂ Carbon dioxide gas CO ₂ is generated by the reaction O + CO ₂ , and this carbon dioxide gas is released from the upper sheet 4A of the bag body 4 to the outside, making it effective for large bag-shaped three-dimensional dolls made of plastic sheets, so-called air pillows, air cushions, etc. Can be inflated.

Incidentally, the amounts of the acidic substance 1 such as water and the above-mentioned organic acid, and the alkaline substance 2 such as hydrogen carbonate are measured and added in advance so that the desired amount of carbon dioxide gas can be generated.

In addition, the sheet 4A is made of a gas-permeable flexible sheet material that has water-containing properties, and absorbs the acidic or alkaline aqueous solution 1A or 2A in the container 3, and reacts with the powder of each alkaline or acidic substance 2 or 1 until the end. The desired amount of gas can be reliably generated.

[Effect of the invention] As mentioned above, this invention
Alternatively, a container 3 containing an alkaline substance solution 2A and openable from the outside is formed into a bag 4 made of a flexible material having gas permeability and water content, each containing an alkaline substance 2 or an acidic substance 1.
Since the powders of alkaline substances and acidic substances are stored inside the bag, scattering of the powders inside the bag is minimal, and even if some of them are scattered, the sheet 4A of this invention is made of a flexible sheet material that is water-containing and gas-permeable. Since it is configured as follows, it is possible to absorb the acidic or alkaline aqueous solution 1A or 2A in the container 3 and continue to react with the powder of each alkaline or acidic substance 2 or 1 until the end to reliably generate the desired amount of gas.

Furthermore, this invention has an industrially useful effect in that it can be mass-produced using inexpensive materials such as open-cell foamed sponge and cotton. Therefore, the present invention is effective for use in hollow bag-shaped displays such as large bag-shaped three-dimensional dolls, throwing toys such as Air Brisbee, and the like.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing an embodiment of this invention, Figure 2 is a sectional view showing an embodiment of this invention.
The figure is a perspective view showing another embodiment of the container, and FIG. 3 is a schematic cross-sectional view showing a conventional example. 1...Acidic substance, 1A...Acidic substance solution, 2...
...Alkaline substance, 2A...Alkaline substance solution, 3...Container, 4...Bag, 4A...Flexible bag having gas permeability and water content.

Claims (1)

[Scope of utility model registration request] A container 3 containing an acidic substance solution 1A or an alkaline substance solution 2A and which can be opened from the outside is inside a bag 4 formed of a flexible material having gas permeability and water-retaining property and containing an alkaline substance 2 or an acidic substance 1, respectively. A gas generating device housed in.