JPH0541332Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to the improvement of cold storage bags, which are used to cool parts of the human body that need to be kept cold, foods that need to be kept cold, etc., and are used in daily life. It is of course widely used in industries that handle items that need to be kept cold.

(Prior Art) Conventionally, cold bags have long been known as water pillows, ice packs, etc. that are used by contacting parts of the human body that need to be kept cold, and relatively recently bags made of plastic film have been used. The so-called "Ice-Non" is widely used, in which a refrigerant is sealed inside the refrigerator and the refrigerant is frozen in advance in a freezer to cool the necessary parts of people or the human body when necessary.

Furthermore, recently, other water bags that contain water and are sealed have been stored in the bag body in advance, as well as dissolved heat-absorbing agents such as ammonium sulfide. A type of cold storage bag is used that is made to flow into the bag body and react with the dissolved endothermic agent to obtain a cold storage bag.

(Problem to be solved by the invention) However, among the above-mentioned cold storage bags, the types such as water pillows and ice packs require ice to be placed inside the bag, so if ice is not available, use a cold storage device. Also, in the latter case,
The problem is that the refrigerant must always be stored in a freezer that freezes it, and therefore, in both cases, it cannot function as a cold storage device in the event of an emergency where there is no ice or freezer available. There is.

Furthermore, in the last type, the water bag containing water in advance is stored inside the bag itself, so it is heavy and bulky even when not in use, making it extremely difficult to carry individually. Not only is it inconvenient, but it also requires a lot of effort and space to transport and store large quantities, and in addition, water bags can be pressurized and torn when stored or carried.
There are problems such as an unexpected cooling reaction occurring when cooling is not required, or the bag body being torn at the same time and cooling water leaking out and damaging other items.

The present invention was researched and developed to address the above-mentioned problems, and can provide immediate cooling effect regardless of time and place as long as there is water, without requiring ice or a freezer. To provide a cold storage bag which is lightweight, convenient to carry, has good safety, and allows water to be easily and quickly introduced into the bag body.

(Means for Solving the Problems) In order to solve the above problems, the cold bag according to the present invention has a cooling bag body made of a flexible and water-impermeable material such as plastic film. A watertight cold storage bag equipped with a check valve so that liquid can be injected into the bag body only through the installed opening of the check valve, the bag having an endothermic agent dissolved in the cold storage bag body. and has a considerable volume with an upper open periphery having a width at least comparable to the width of the upper periphery of the bag body and having a required depth, communicating with the installation opening of the check valve. It is constructed by connecting a water receiving part for introducing water from the main body of the bag.

(Function) By supplying fresh water, seawater, etc. to the water receiving portion of the cold bag configured as described above, water is introduced into the bag body through the opening provided with the check valve.
This water introduction operation is not performed directly through the narrow opening of the check valve, but is provided with an upper open periphery with a width comparable to the width of the upper periphery of the bag body, which is connected above the bag body. In addition, since the water is introduced from a water receiving portion having a sufficient volume and a required depth, water can be injected into the bag body very easily, reliably, and quickly.

When water is poured into the bag, the soluble heat absorbing material stored in advance in the bag melts, causing an endothermic reaction, which rapidly cools the poured water, allowing the desired cold storage bag to be obtained immediately at the required site. In addition, the check valve prevents this cooling water from leaking out.

(Example) An example of the implementation of the present invention will be described below based on the attached drawings.
, a check valve 3 installed inside the bag body, and the check valve 3
It consists of a water receiving part 4 for water conveyance which is connected from the bag main body in communication with the opening of the bag.

The bag body 1 is made of a water-impermeable plastic film (sheet) having appropriate flexibility and shape retention, and in this embodiment, a plurality of sheets of the film are layered (not shown). Moreover, it is formed in a rectangular shape. The dissolved endothermic agent 2 is a substance that causes an endothermic reaction when dissolved in water, and in this example, ammonium sulfide, ammonium nitride,
It uses urea or the like and is wrapped in a nonwoven fabric 5 containing water-soluble polyvinyl alcohol.

The check valve 3 is made of a slightly thinner plastic film that is the same as the seal film used on the innermost surface of the bag body 1, which is made of a plurality of laminated films. tube 6
and two valve bodies 7, which are sequentially installed in series in the flow pipe from the base end side of the flow pipe along the water flow direction, and each valve body 7 is connected to the flow pipe. In the flow direction of the water flowing through the flow pipe 6, the distal end side is provided with a closed part 8 consisting of a bifold part, and the proximal end side is provided with an open part 9. Both inner surfaces 6a, 6 of the flow pipe 6
A and both outer surfaces 7a, 7a of each valve body 7 are formed with gaps 10, 10 to allow fluid to flow through the gaps, as shown in the figure.
11, 11 is a fluid discharge prevention function (check valve function)
In order to do this more reliably, the inner surfaces 6a, 6a of the flow pipe 6 and the outer sides 7a, 7a of each valve body 7, 7 are partially bonded at one or multiple locations in the width direction. be.

In addition, FIG. 6 is an exploded view of a valve to make it easier to understand one example of the means for manufacturing the check valve 3. In this example, the method for manufacturing the check valve with the above structure is simplified. , there are two plastic films on the flow pipe 6.
F ₁ and F ₁ are used, and two bent pieces of plastic film F ₂ and F ₂ are used for each valve body 7, 7, and the bent pieces are arranged in series along the fluid flow direction. In the arranged state, sandwich the films F ₁ and F ₁ in the middle,
The check valve 3 having the above structure is constructed by heat-bonding both side edges at the same time.

Next, as shown in FIGS. 1 to 3 and 8, the water receiving portion 4 for water conveyance is connected to the upper opening periphery 12 of the bag body 1 and the installation opening of the check valve 3. Part 13
is formed between. That is, when the check valve 3 configured as described above is installed in the bag body 1, the check valve 3 is placed in the middle part of the bag body 1 at a position below the upper opening periphery 12 of the bag body ₁ by a required distance L1. Positioning the end opening 13 of the check valve 3, inserting the check valve 3 into the bag body, and then applying high frequency bonding to the portion 14 of the check valve 3 other than the end opening 13 in the lateral direction. Therefore, the depth that communicates only with the opening 13 is
L ₁ and width L ₂ A water receiving part 4 for water conveyance having a considerable volume is formed with the upper part open. It has a relatively large volume with an upper open periphery of comparable width and the required depth.

In the figure, 15 is a water-absorbing polymer that is housed in the bag body 1 along with a dissolved heat absorbing agent if necessary, and is wrapped in a water-soluble nonwoven fabric 5 like the dissolved heat absorbing agent, and water is injected into the bag. When this happens, the polymer 15 is turned into a gel, thereby imparting appropriate viscosity to the entire cooling water, which is useful for improving the comfort of use when the cold bag is used as an ice pillow, for example.

Next, based on the embodiment configured as above,
To explain how to use it, as shown in FIG. Alternatively, supply water from a water pitcher or the like, or pinch both sides of the water receiver 4 with your fingers and immerse the bag body in a water tank, pond, sea, etc. When water (seawater) is supplied, the supplied water is easily and reliably guided to the opening 13 of the check valve 3, passes through both gaps 10, 10 of the check valve, and is smoothly introduced into the bag body. Ru. The introduced water causes the dissolution of the heat absorbing agent 2 in the packaging nonwoven fabric 5 stored in the bag body.
is dissolved, the endothermic agent 2 is dissolved, and the water in the bag body is rapidly cooled by the endothermic reaction, and the water-absorbing polymer 15 is also dissolved and gelled, giving the water an appropriate viscosity to form a cold bag. It also provides appropriate shape retention.

Note that by shaking the water supplied into the bag main body, the above-mentioned cooling effect, etc. can be performed more quickly and efficiently.

(Effects of the invention) Since the present invention has the above configuration and is used in the manner described above, it can achieve the following practical effects.

(1) The cold bag is flexible and light in weight when not in use, so it can be folded into a small size and easily carried.

(2) It is extremely convenient and economical as it does not require ice or a freezer at all and can be used anywhere as a cold storage bag as long as you have the necessary liquid such as water.

(3) A water receiving part for introducing water that communicates with the installation opening of the check valve, that is, the water injection port into the bag, is connected to the bag body, and the water receiving part is located at least at the upper periphery of the bag body. It has an upper open periphery with a width comparable to the width of the bag, and has a considerably large volume with the required depth, so that water can be easily, reliably, and quickly supplied into the bag. Can be done.

(4) Since it is not hard like ice or freezing refrigerant, it feels soft to the human body and does not cause itching, does not damage fish meat or other items that need to be kept cold, and is sufficiently coated on the surface of items that need to be kept cold. It can be used as an attachment to
Cooling effect can be improved.

(5) If the bag body is made long and thin,
It can be used by wrapping it around affected parts of the human body that require cooling or fresh fish and meat.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention: Fig. 1 is a perspective view, Fig. 2 is a longitudinal cross-sectional end view of a state in which water is introduced into the bag body to obtain cooling liquid, and Fig. 3 is a check valve. FIG. 4 is a perspective view of the check valve; FIG. 5 is an enlarged vertical cross-sectional end view taken along line A-A in FIG. 4;
Fig. 6 is an exploded perspective view of the check valve, and Fig. 7 A and B are explanatory views of the state of the check valve during use.
A is an enlarged cross-sectional view when water is being introduced, B is an enlarged cross-sectional view when the check valve is acting as a check, and FIG. 8 is an explanatory view of the state in which water is introduced. Explanation of symbols, 1...Cold bag body, 2...Dissolved heat absorbing agent, 3...Check valve, 4...Water receiver, 13...
Installation opening for check valve.

Claims (1)

[Scope of utility model registration request] A check valve is installed inside the cold bag body made of flexible and water-impermeable material such as plastic film, and liquid can only be injected into the bag body through the opening where the check valve is installed. A watertight cold storage bag configured to accommodate a dissolved heat absorbing agent in the cold storage bag main body, and at least the width of the upper periphery of the bag body, which communicates with the installation opening of the check valve. A cold storage bag characterized by having a water receiving part for guiding water having a comparable wide upper open periphery, a required depth, and a considerable volume, connected from the bag main body.