JPH0581250U - Simple cooling bag - Google Patents

Abstract

(57) [Summary] [Purpose] A simple cooling bag that does not break during storage, transportation, or other handling, and can be folded or shocked during use to greatly break the internal pouch, allowing efficient mixing of drugs. . [Structure] A simple cooling bag in which one of two kinds of medicines is put in a small bag and is housed in an outer bag together with the other medicine, and a synthetic resin uniaxially stretched film is used as a material of the small bag.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a simple cooling bag. More specifically, the small bag stored in the simple cooling bag is not damaged during handling such as storage and transportation, and is reliably broken by applying external impact or bending when used. The present invention relates to a simple cooling bag capable of efficiently mixing the medicine inside the pouch and the medicine outside the pouch.

[0002]

[Prior Art]

 There is a simple cooling bag in which a plurality of drugs that generate heat when mixed are stored in a bag in an isolated state, and when the drugs are used, the isolation is removed and a cooling phenomenon occurs by mixing the two drugs. As a combination of these chemicals, a combination of water and an inorganic ammonium salt such as ammonium nitrate is generally used in the past, because it is relatively inexpensive and can obtain a corresponding cooling effect. Instead, it is also known to use salts having water of crystallization such as sodium sulfate decahydrate and magnesium chloride hexahydrate. Means for isolating the drug include, for example, a method in which one drug is filled in a small bag that is torn by an external impact, and this small bag is stored together with the other drug in an airtight outer bag. The ones generally used are many. As a material for the pouch in this case, a conventional synthetic resin film such as polyethylene, polypropylene, polyester, or Surlyn, a metal foil such as aluminum, or a composite film in which these are combined is conventionally used.

[0003]

[Problems to be solved by the device]

 However, as a material for the sachet, metal foil such as aluminum is easily pierced by friction with drug crystals during handling such as stacking and storing cooling bags, and increasing the thickness makes it easy to apply shock during use. It has the disadvantage that it cannot be broken. For this reason, synthetic resin films have been widely used as a material for pouches recently, but ordinary synthetic resin films are flexible and have a high elongation rate, and it is necessary to make them thinner to break them by impact, but it is too thin. Since there is a trade-off problem that it is easy to break during handling such as storage and transportation, it is not only difficult to select the thickness, but also the opening area of the broken part is generally small, so When the chemicals are solids, such as a salt containing water of crystallization, the mixing speed is slow and there is also the inconvenience that a rapid cooling effect cannot be obtained.

[0004]

[Means for Solving the Problems]

 The present inventors have dealt with these problems, and the inner pouch is not damaged during handling such as storage and transportation, and an unspecified user can easily and easily apply the pouch by applying an impact. However, as a result of repeated research to obtain a simple cooling bag that can be reliably broken and that provides an excellent cooling sensation, we have found that these problems can be solved by using a synthetic resin uniaxially stretched film for the small bag. I found it and completed the present invention. That is, according to the present invention, either one of the drug A and the drug B is stored in a small bag, and the other drug is kept in the flat air-tight outer bag at the same time while being sealed, and is externally used during use. A uniaxially stretched synthetic resin film having heat-sealing property is used as a material for the simple cooling bag that breaks the pouch under impact and mixes both drugs to generate an endotherm. It is a simple cooling bag.

In the present invention, a synthetic resin uniaxially stretched film is used for the pouch of the simple cooling bag. As the uniaxially stretched film, for example, a horizontal uniaxially stretched film obtained by stretching a flat film only in the transverse direction by a tenter method and immediately heat setting, or a high density polyethylene by an inflation method or a T-die method in the longitudinal direction. A longitudinally uniaxially stretched film obtained by stretching after being heat-set is available. Any of these may be used, but in the case of continuously performing mechanical filling packaging with a long stretched film, a longitudinal uniaxially stretched film having high strength in the longitudinal direction is preferable.

The material for the uniaxially stretched film is, for example, a uniaxially stretched film of high density polyethylene, low density polyethylene, polypropylene, polyester, polyvinyl chloride, polystyrene, nylon or a composite film thereof. Further, if necessary for the purpose of increasing moisture impermeability, these uniaxially stretched films may be laminated with non-stretched polyvinylidene chloride, aluminum foil or the like. Among these, a uniaxially stretched film of high density polyethylene, polypropylene, polyester or the like or a film obtained by laminating this with unstretched polyvinylidene chloride is preferable.

The stretching ratio of the uniaxially stretched film is usually 3 to 10 times, preferably 5 to 10 times. Further, the thickness varies depending on the material of the film, the presence or absence of lamination with other films, the shape and size of the bag, etc. and cannot be specified unconditionally, but the thickness of the entire film is usually 20 to 100 μ, preferably 40 to The one of about 60 μ is used. The shape of the pouch is not particularly limited as long as it is flat, and may be rectangular, square, circular, oval, or the like, but the rectangular shape is preferable because of the processability and the directionality peculiar to the uniaxially stretched film when tearing. It is particularly preferable to use the stretching direction as the long side because a large opening can be obtained during use. Pouches are made by folding one film and sealing it on three sides, or by stacking two films and sealing on four sides. As a sealing method, an impulse sealing method, a heat sealing method, an adhesive sealing method, or the like can be used. Of these, the impulse sealing method is generally preferable because of its small heat shrinkage and the good continuous production efficiency by the filling and packaging machine.

A non-moisture permeable film is used for the outer bag in which the small bag filled with one drug and the other drug are stored at the same time. Non-moisture permeable films include synthetic resin films and metal foils, such as synthetic resin films such as polyethylene, polypropylene, polyester, nylon, polyvinyl chloride, polyvinylidene chloride, polyisocyanate, and composite films thereof. Since it is easy to process and can be obtained at low cost, it is recommended to use synthetic resin films such as polyethylene, polypropylene, polyester, nylon, polyvinyl chloride, polyvinylidene chloride, etc. and their composite films or metal foils such as aluminum or evaporated aluminum. And the like are preferable. The shape of the outer bag is not particularly limited, but is usually a rectangle, a square or the like similar to the shape of the pouch.

Drugs A and B are used in the present invention. One of the drugs is an inorganic salt, or a mixture thereof with urea if necessary, and the other is a salt hydrate having water of crystallization. The thing or the thing which mixed water with this etc. is used. Examples of the inorganic salts include ammonium nitrate, ammonium chloride, ammonium sulfate, ammonium bromide, ammonium iodide, ammonium phosphate, ammonium hydrogen phosphate, ammonium metavanadate, and other inorganic ammonium salts, and sodium nitrate, potassium nitrate, and other inorganic nitrate salts. Of these, inorganic ammonium salts such as ammonium nitrate, ammonium sulfate, ammonium bromide and ammonium chloride are preferable.

Examples of the salt hydrate containing water of crystallization include strontium hydroxide octahydrate, sodium metasilicate nonahydrate, magnesium chloride hexahydrate, sodium tetraborate decahydrate, and the like. , Strontium hydroxide octahydrate or a mixture thereof with sodium metasilicate nonahydrate is preferable. When water is used in combination with the salt hydrate, the weight ratio of both is 0.1 to 5.0, preferably 0.3 to 3.0, relative to 1 for the salt hydrate. Further, the ratio of both when the drug using the inorganic salt is the drug A and the drug using the salt hydrate containing water of crystallization is the drug B is determined depending on the desired cooling performance and the like. Usually, the weight ratio of the drug A is 1 to the drug B, and the drug B is 0.25 to 4.0, preferably about 0.5 to 2.0.

Next, the present invention will be illustrated in more detail with reference to the drawings. FIG. 1 is a sectional view of the simple cooling bag of the present invention. In FIG. 1, a drug A3 is filled in a rectangular flat pouch 1 made of a synthetic resin uniaxially stretched film stretched in the long side direction, and this pouch 1 is formed into a rectangular flat outer bag 2 together with a drug B4. It is stored in the simple cooling bag of the present invention. When using a simple cooling bag, apply a shock from the outside of the flat outer bag 2 with a fist or bend it along the line perpendicular to the long side at about the center of the long side of the outer bag. The pouch 1 is torn along the stretching direction to form a large opening. Here, the medicines A3 and B4 are efficiently mixed by appropriately shaking or rubbing the entire bag, and cooling is immediately started.

In the present invention, a rectangular flat pouch stretched in the short side direction may be used in place of the pouch stretched in the long side direction described in FIG. The pouch can be broken by giving an impact or bending, but it is preferable to use a pouch stretched in the long side direction because the crevice is long during use and a large opening is formed, which facilitates mixing.

[0013]

【Example】

 Example 1 Two 50 μm-thick uniaxially stretched high-density polyethylene films (Calarian Y-50, manufactured by Toyo Kagaku Co., Ltd.) were superposed, and the periphery 3 sides were heat-sealed with a width of 5 mm by an impulse sealing method. By doing so, a small bag having a length of 100 mm and a width of 60 mm was prepared, and 40 g of ammonium nitrate as the drug A was filled therein, and the remaining one side was sealed and sealed. This flat pouch is made of aluminum laminar film with a thickness of 80 microns together with 40 g of strontium hydroxide octahydrate as drug B. It is stored in a 105 x 165 mm rectangular flat outer pouch and sealed for easy use. The sample was used as a cooling bag. At an ambient temperature of 36 ° C, this cooling bag was bent from the outside along the line that is at a right angle to the long side at about the center of the long side, and after breaking the inner pouch, the outer surface of the outer bag was thermoelectrically charged. As a result of attaching a thermometer and measuring the temperature every 10 seconds, the temperature reached 10 ° C in about 15 seconds, and after 2 minutes, the minimum reached temperature of -14.5 ° C was exhibited. After that, the temperature gradually increased, but the cooling duration at 10 ° C or lower was 14 minutes. After cooling, the outer bag was cut, the small bag inside was taken out, and the condition of tearing was inspected.As a result, a linear crack along the long side, that is, along the stretching direction, with a length of about 75 mm, was opened and a large opening was made. Was there.

Example 2 When the same simple cooling bag as in Example 1 was used and instead of being bent, it was struck with a fist from the outside of the bag, cooling started once. A thermocouple thermometer was attached to the surface of the outer bag, and the temperature was measured every 10 seconds. As a result, the temperature reached 10 ° C in about 20 seconds, and the minimum temperature reached -13 ° C after 2 minutes. Thereafter, the temperature gradually increased, but the cooling duration at 10 ° C or lower was 15 minutes. After cooling, the outer bag was cut, the inner pouch was taken out, and the state of tearing was inspected. As a result, a linear crack of about 60 mm was formed along the long side direction, that is, the stretching direction, and the bag was opened.

Comparative Example 1 A simple cooling bag sample was manufactured in the same manner as in Example 1 except that a small bag of unstretched polyethylene film having a thickness of 50 μm was used as the material of the small bag instead of the uniaxially stretched film. .. At an ambient temperature of 36 ° C., this cooling bag was bent in the same manner as in Example 1, but the pouch did not break, and as a result of being strongly struck with a grip fist, cooling gradually started when it was struck eight times. When the temperature was measured in the same manner as in Example 1, the temperature reached 10 ° C. somehow after about 2 minutes, and then the temperature decreased, but the lowest temperature reached -9 ° C. The cooling duration at 10 ° C or lower was 15 minutes, and almost no difference from the example was observed. After cooling, the outer bag was cut, the small bag inside was taken out, and the state of tearing was inspected. As a result, an irregular crack of about 20 mm was formed in the diagonal direction near the center, and this part had a small opening. ..

[0016]

[Effect of the device]

 The simple cooling bag of the present invention uses a synthetic resin uniaxially stretched film as the material of the pouch, so that it will not be damaged during handling such as storage and transportation, and users such as women and children who have a comparatively weak force. However, by giving an appropriate impact from the outside of the bag, or by bending it, it will surely tear in the stretching direction and open wide, so the medicines are easily mixed and cooling is started quickly, which is a practical feature. ing.

[0017]

[Brief description of drawings]

FIG. 1 is a sectional view of a simple heating bag.

[Explanation of symbols]

 1 small bag 2 outer bag 3 drug A 4 drug B

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Yayoko Hiramoto 5181 Tamura, Hiratsuka City, Kanagawa Prefecture, Japan Pionics Co., Ltd. Hiratsuka Factory (72) Isao Nagatsu 5181 Tamura, Hiratsuka City, Kanagawa Prefecture, Japan Pionix Co., Ltd. Hiratsuka in the factory

Claims (8)

[Scope of utility model registration request] 1. A drug A or a drug B is housed in a small bag, and the other drug is sealed and housed in a flat airtight outer bag at the same time while keeping the other drug intact. In a simple cooling bag which gives heat absorption by giving a small bag and breaking the small bag and mixing both drugs, a simple cooling bag characterized by using a synthetic resin uniaxially stretched film having heat sealability as a material of the small bag. . 2. A uniaxially stretched film is high-density polyethylene,
The simple cooling bag according to claim 1, which is polypropylene, polyester, or a composite film obtained by laminating a polyvinylidene chloride film on the polypropylene or polyester. 3. The simple cooling bag according to claim 1, wherein the film has a thickness of 20 to 100 μm. 4. The simple cooling bag according to claim 1, wherein the stretch ratio of the uniaxially stretched film is 3 to 10 times. 5. The simple cooling bag according to claim 1, wherein the pouch has a rectangular flat shape having a long side in a stretching direction. 6. The simple cooling bag according to claim 1, wherein one of the drug A and the drug B is an inorganic ammonium salt, and the other is a salt hydrate having water of crystallization or a mixture thereof with water. 7. The inorganic ammonium salt is ammonium nitrate,
The simple cooling bag according to claim 6, which is one kind or two or more kinds selected from ammonium sulfate, ammonium bromide, and ammonium chloride. 8. The simple cooling bag according to claim 6, wherein the salt hydrate containing water of crystallization is strontium hydroxide octahydrate or a mixture thereof with sodium metasilicate nonahydrate.