JP2020146179A - Cooling pack - Google Patents
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- JP2020146179A JP2020146179A JP2019045306A JP2019045306A JP2020146179A JP 2020146179 A JP2020146179 A JP 2020146179A JP 2019045306 A JP2019045306 A JP 2019045306A JP 2019045306 A JP2019045306 A JP 2019045306A JP 2020146179 A JP2020146179 A JP 2020146179A
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- 238000001816 cooling Methods 0.000 title claims abstract description 122
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000002826 coolant Substances 0.000 claims abstract description 36
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims abstract description 24
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- 239000000741 silica gel Substances 0.000 claims description 20
- 229910002027 silica gel Inorganic materials 0.000 claims description 20
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 19
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 18
- 239000004202 carbamide Substances 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-DYCDLGHISA-N deuterium hydrogen oxide Chemical compound [2H]O XLYOFNOQVPJJNP-DYCDLGHISA-N 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000012212 insulator Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 13
- 238000012360 testing method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000002562 thickening agent Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 206010019345 Heat stroke Diseases 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D5/00—Devices using endothermic chemical reactions, e.g. using frigorific mixtures
- F25D5/02—Devices using endothermic chemical reactions, e.g. using frigorific mixtures portable, i.e. adapted to be carried personally
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
Description
本発明は、瞬間的に被冷却物を冷却する際に使用される冷却パックに関する。 The present invention relates to a cooling pack used to instantaneously cool an object to be cooled.
近年、熱中症対策や発熱時などにおいて、瞬間的に冷却できる商品として、いわゆる冷却パックが広く用いられている。 In recent years, so-called cooling packs have been widely used as products that can be cooled instantaneously as a measure against heat stroke or when fever occurs.
冷却パックは、ポリエチレンなどのプラスチック樹脂からなる外袋に硝酸アンモニウムや尿素などを混合した顆粒状の冷却剤を入れ、且つこの外袋の内側に水袋をも入れた状態で外袋を溶着・封止する。そして、冷却する際には、冷却パックを片手に持つか又は水平な所に載置し、外袋を外側から拳で叩き、外袋の内部に収容されている水袋を破裂させる。すると、外袋内の冷却剤と水とが混合して吸熱反応による冷却が始まり、瞬間的に冷却できるものである。 The cooling pack is made by welding and sealing the outer bag with a granular coolant mixed with ammonium nitrate, urea, etc. in an outer bag made of plastic resin such as polyethylene, and also a water bag inside the outer bag. Stop. Then, when cooling, the cooling pack is held in one hand or placed on a horizontal place, and the outer bag is tapped from the outside with a fist to burst the water bag contained in the outer bag. Then, the coolant in the outer bag and water are mixed and cooling by an endothermic reaction starts, and the cooling can be performed instantaneously.
通常、外袋に入れる冷却剤は、水に溶解する際に吸熱反応を起こす物質であり、例えば、硫酸アンモニウム、硝酸アンモニウム、尿素等が使用される。また、メーカによっては、増粘剤となるカルボキシメチルセルロース（CMC: carboxymethyl cellulose）を内部に含有させる場合もある。 Usually, the coolant to be put in the outer bag is a substance that causes an endothermic reaction when dissolved in water, and for example, ammonium sulfate, ammonium nitrate, urea and the like are used. In addition, depending on the manufacturer, carboxymethyl cellulose (CMC), which is a thickener, may be contained inside.
冷却の使用後の冷却パックは、冷凍庫にいれて一定期間以上に亘って冷却することで保冷剤として再利用されることも多い。 After using the cooling, the cooling pack is often reused as an ice pack by putting it in a freezer and cooling it for a certain period of time or longer.
ところで、外気温によって冷却剤が融解して塊状に固まるといった問題を解消し、取り扱いやすい冷却パックが開示されている（例えば、特許文献１参照）。また、被冷却体を瞬間的に冷却できると共にその保冷時間を延長できる瞬間冷却パックも開示されている（例えば、特許文献２参照）。 By the way, a cooling pack that solves the problem that the coolant melts and hardens into a lump due to the outside air temperature and is easy to handle is disclosed (see, for example, Patent Document 1). Further, an instantaneous cooling pack capable of instantaneously cooling the object to be cooled and extending the cooling time thereof is also disclosed (see, for example, Patent Document 2).
しかしながら、従来より販売されている冷却パックにおいて、冷却の効果は、室温３０℃での静置で約３０分、氷点下の冷却温度を得ることができるが、未だ冷却温度・冷却性能としては不十分である。 However, in the cooling packs sold conventionally, the cooling effect is that the cooling temperature below the freezing point can be obtained for about 30 minutes by standing at room temperature of 30 ° C., but the cooling temperature and cooling performance are still insufficient. Is.
特に、冷却パックの使用後に冷凍庫に入れて凍結させて保冷剤として再利用する際においては、従来の冷却パックでは直ぐに融点が０℃以上になり、氷点下での冷却持続時間が非常に短いという問題がある。 In particular, when the cooling pack is put in a freezer after use and frozen and reused as an ice pack, the melting point of the conventional cooling pack immediately becomes 0 ° C or higher, and the cooling duration below the freezing point is very short. There is.
本願発明は、上記課題に鑑みてなされたものであり、従来の冷却パックと比較して、より冷却性能が向上し、特に、使用後に保冷剤として再利用する際の冷却性能を飛躍的に向上した冷却パックを提供することを目的とする。 The present invention has been made in view of the above problems, and the cooling performance is further improved as compared with the conventional cooling pack, and in particular, the cooling performance when reused as a cooling agent after use is dramatically improved. The purpose is to provide a cooling pack.
上記目的を達成するために本発明は、水を収容した水袋と、当該水袋及び水と反応して吸熱する冷却剤を内部に収容して封止される外袋とを有し、前記水袋を外からの衝撃により破裂させることにより水と冷却剤が吸熱反応をして冷却する冷却パックであって、前記外袋の中に、ポリアクリル酸ナトリウムを含有させることを特徴とする。 In order to achieve the above object, the present invention has a water bag containing water and an outer bag containing the water bag and a cooling agent that reacts with water to absorb heat and seals the inside. It is a cooling pack in which water and a cooling agent undergo an endothermic reaction to cool the water bag by causing the water bag to burst due to an impact from the outside, and the outer bag is characterized by containing sodium polyacrylate.
また、本発明に係る冷却パックにおいて、前記外袋に収容される冷却剤には、硝酸アンモニウム及び尿素の少なくとも一方が使用されることが好ましい。 Further, in the cooling pack according to the present invention, it is preferable that at least one of ammonium nitrate and urea is used as the coolant contained in the outer bag.
また、本発明に係る冷却パックにおいて、前記外袋の中に、さらに、シリカゲルを含有させることが好ましい。 Further, in the cooling pack according to the present invention, it is preferable that silica gel is further contained in the outer bag.
また、本発明に係る冷却パックにおいて、前記外袋には（ａ）尿素及び硝酸アンモニウムの少なくとも一方、（ｂ）ポリアクリル酸ナトリウム、（ｃ）シリカゲル、前記水袋には（ｄ）水（ただし（ａ）+（ｂ）+（ｃ）+（ｄ）＝100wt%とする）を配合し、（ｂ）ポリアクリル酸ナトリウムを0.5wt%以上とすることが好ましい。 Further, in the cooling pack according to the present invention, the outer bag contains at least one of (a) urea and ammonium nitrate, (b) sodium polyacrylate and (c) silica gel, and the water bag contains (d) water. (A) + (b) + (c) + (d) = 100 wt%) is blended, and (b) sodium polyacrylate is preferably 0.5 wt% or more.
また、本発明に係る冷却パックにおいて、前記外袋には（ａ）尿素及び硝酸アンモニウムの少なくとも一方を35wt%、（ｂ）ポリアクリル酸ナトリウム1wt%、（ｃ）シリカゲル1wt%、前記水袋には（ｄ）水63wt%（ただし（ａ）+（ｂ）+（ｃ）+（ｄ）＝100wt%とする）を配合することが好ましい。 Further, in the cooling pack according to the present invention, the outer bag contains 35 wt% of at least one of (a) urea and ammonium nitrate, (b) 1 wt% of sodium polyacrylate, (c) 1 wt% of silica gel, and the water bag contains. (D) It is preferable to mix 63 wt% of water (provided that (a) + (b) + (c) + (d) = 100 wt%).
上記目的を達成するために本発明は、瞬間冷却用の配合剤であって、（ａ）尿素及び硝酸アンモニウムの少なくとも一方を35wt%、（ｂ）ポリアクリル酸ナトリウム1wt%、（ｃ）シリカゲル1wt%、（ｄ）水63wt%（ただし（ａ）+（ｂ）+（ｃ）+（ｄ）＝100wt%とする）を主成分とすることを特徴とする。 In order to achieve the above object, the present invention is a compounding agent for instantaneous cooling, wherein at least one of (a) urea and ammonium nitrate is 35 wt%, (b) sodium polyacrylate 1 wt%, and (c) silica gel 1 wt%. , (D) Water 63 wt% (provided that (a) + (b) + (c) + (d) = 100 wt%) is the main component.
本発明に係る冷却パックは、水袋と、水袋及び水と反応して吸熱する冷却剤を内部に収容して封止される外袋とを有し、水袋を外からの衝撃により破裂させることにより水と冷却剤が吸熱反応をして冷却し、外袋の中に、ポリアクリル酸ナトリウムを含有させる。この構成により、本発明の冷却パックは、従来の冷却パックと比較して、より冷却性能が向上し、特に、使用後に保冷剤として再利用する際の冷却性能を飛躍的に向上できる。 The cooling pack according to the present invention has a water bag and an outer bag that internally contains and seals a water bag and a coolant that reacts with water and absorbs heat, and the water bag bursts due to an impact from the outside. The water and the coolant undergo an endothermic reaction to cool the water, and the outer bag contains sodium polyacrylate. With this configuration, the cooling pack of the present invention has further improved cooling performance as compared with the conventional cooling pack, and in particular, the cooling performance when reused as a cooling agent after use can be dramatically improved.
（実施の形態）
本発明の実施の形態に係る冷却パックについて図１を参照して説明する。冷却パック１は、発熱時や頭痛などの応急処置、スポーツ、レジャ、仕事、勉強時などの暑さ対策の用途に用いられ、一瞬で冷却できる手軽な商品として幅広く使用されている。
(Embodiment)
The cooling pack according to the embodiment of the present invention will be described with reference to FIG. The cooling pack 1 is used for first aid measures such as fever and headache, and for heat measures such as sports, leisure, work, and study, and is widely used as a handy product that can be cooled in an instant.
最初に、冷却パック１の構造に関して図１を参照しながら説明する。冷却パック１は、例えば矩形状の袋であり、水１０ａを収容した水袋１０と、水袋１０及び水１０ａと反応して吸熱する冷却剤１１ａを内部に収容して溶着・封止される外袋１１とを有する。そして、水袋１０を外からの衝撃により破裂させることにより水１０ａと冷却剤１１ａが吸熱反応をして冷却作用を生じる。冷却パック１のサイズは、例えば幅１８０ｍｍ×高さ１１０ｍｍ程度である。 First, the structure of the cooling pack 1 will be described with reference to FIG. The cooling pack 1 is, for example, a rectangular bag, in which a water bag 10 containing water 10a and a cooling agent 11a that reacts with the water bag 10 and water 10a to absorb heat are housed therein and welded / sealed. It has an outer bag 11. Then, when the water bag 10 is burst by an impact from the outside, the water 10a and the coolant 11a undergo an endothermic reaction to generate a cooling action. The size of the cooling pack 1 is, for example, about 180 mm in width × 110 mm in height.
水袋１０及び外袋１１は、例えばポリエチレンやナイロン、ポリアミドなどの熱可塑性プラスチック樹脂で形成される。通常、水袋１０の方は外からの衝撃により破裂できるよう厚さが薄く、外袋１１は外からの衝撃によっても容易に破裂しないような厚さの樹脂で形成される。 The water bag 10 and the outer bag 11 are made of a thermoplastic resin such as polyethylene, nylon, or polyamide. Normally, the water bag 10 is thin so that it can be burst by an impact from the outside, and the outer bag 11 is made of a resin having a thickness that does not easily burst by an impact from the outside.
冷却パック１の外袋１１の中には、水袋１０からの水１０ａの即座の流動を防止するための増粘剤として作用するポリアクリル酸ナトリウム１１ｂを含有させる。外袋１１に収容される冷却剤１１ａには、硝酸アンモニウム及び尿素の少なくとも一方が使用される。この際、硝酸アンモニウム又は尿素の一方のみを使用しても良いし、両方を所定割合で混合しても良い。 The outer bag 11 of the cooling pack 1 contains sodium polyacrylate 11b, which acts as a thickener for preventing the immediate flow of water 10a from the water bag 10. At least one of ammonium nitrate and urea is used as the coolant 11a contained in the outer bag 11. At this time, only one of ammonium nitrate and urea may be used, or both may be mixed in a predetermined ratio.
冷却パック１の外袋１１の中には、さらに増粘剤として作用するシリカゲル１１ｃを含有させる。これらの増粘剤（ポリアクリル酸ナトリウム１１ｂ及びシリカゲル１１ｃ）を外袋１１に含有させることで水１０ａが一気に外袋１１の内に流れ出て冷却剤１１ａと反応するのを防止し、冷却温度及び冷却持続時間を適切に保つことができる。 The outer bag 11 of the cooling pack 1 further contains silica gel 11c that acts as a thickener. By containing these thickeners (sodium polyacrylate 11b and silica gel 11c) in the outer bag 11, water 10a is prevented from flowing out into the outer bag 11 at once and reacting with the coolant 11a, and the cooling temperature and cooling temperature are prevented. The cooling duration can be maintained appropriately.
より具体的には、外袋１１には（ａ）冷却剤１１ａとしての尿素及び硝酸アンモニウムの少なくとも一方を35wt%、（ｂ）ポリアクリル酸ナトリウム１１ｂを1wt%、（ｃ）シリカゲル１１ｃを1wt%、水袋１０には（ｄ）水１０ａを63wt%（ただし（ａ）+（ｂ）+（ｃ）+（ｄ）＝100wt%とする）を配合する。また、（ｂ）ポリアクリル酸ナトリウム１１ｂは0.5wt%以上とすることが好ましい。 More specifically, the outer bag 11 contains (a) 35 wt% of at least one of urea and ammonium nitrate as the coolant 11a, (b) 1 wt% of sodium polyacrylate, and (c) 1 wt% of silica gel 11c. In the water bag 10, (d) water 10a is mixed with 63 wt% (provided that (a) + (b) + (c) + (d) = 100 wt%). Further, (b) sodium polyacrylate 11b is preferably 0.5 wt% or more.
次に、本実施の形態に係る冷却パック１の使用に関して説明する。最初に、所定の冷却が必要な際に、冷却パック１の外側から拳骨を振り下ろす程度の衝撃を水袋１０に与えると、水袋１０のみ破裂する。外袋１１内に出た水１０aと冷却剤１１ａとが反応し、冷却材１１ａが水１０ａに溶解するときに吸熱反応をし、周囲から溶解熱を奪って急速冷却が開始される。この際、本実施の形態に係る冷却パック１では、増粘剤たるポリアクリル酸ナトリウム１１ｂ及びシリカゲル１１ｃの効果により、水１０ａは徐々に糊状になり、断熱効果を発揮して保冷持続時間を長くし、且つ冷却温度を低く保つことができる。また、水１０ａと冷却材１１ａとの吸熱反応が徐々に進行する。 Next, the use of the cooling pack 1 according to the present embodiment will be described. First, when a predetermined cooling is required, when an impact of swinging down the fist bone from the outside of the cooling pack 1 is applied to the water bag 10, only the water bag 10 bursts. The water 10a that comes out of the outer bag 11 reacts with the coolant 11a, and when the coolant 11a dissolves in the water 10a, it undergoes an endothermic reaction, and the heat of dissolution is taken from the surroundings to start rapid cooling. At this time, in the cooling pack 1 according to the present embodiment, the water 10a gradually becomes pasty due to the effects of the thickeners sodium polyacrylate 11b and silica gel 11c, exerting a heat insulating effect and extending the cooling duration. It can be lengthened and the cooling temperature can be kept low. Further, the endothermic reaction between the water 10a and the coolant 11a gradually proceeds.
その後、顆粒状の冷却剤１１ａと水１０ａとが徐々に吸熱反応をして、全ての冷却剤１１ａの水１０ａへの溶解が終了するまで持続する。この結果、冷却パック１は、冷却温度が従来品に比較して低くなり、且つ冷却持続時間をより長くすることが可能となる。 After that, the granular coolant 11a and the water 10a gradually undergo an endothermic reaction and continue until the dissolution of all the coolants 11a in the water 10a is completed. As a result, the cooling pack 1 can have a lower cooling temperature and a longer cooling duration as compared with the conventional product.
次に、本実施の形態に係る冷却パック１の再利用に関して説明する。通常、冷却の使用後の冷却パック１は、冷凍庫にいれて一定期間以上に亘って冷却することで保冷剤として再利用（二次利用）できる。冷却パック１を再利用するときは、例えば冷凍庫に６時間程度入れて、凍結した後に再度保冷剤として使用できる。この際、本実施の形態に係る冷却パック１は、ポリアクリル酸ナトリウム１１ｂを内部に含有しており粘性が従来品に比較して高くなる。この結果、断熱効果を発揮して、特にマイナス１０℃前後となる保冷持続時間を飛躍的に長くし、且つ冷却温度を低い状態を従来と比較して非常に長期間保つことができる。また、再利用で例えば１０分程度冷凍庫で冷やすと、直ぐに冷えて、何回でも繰り返して冷却効果を得ることができる。 Next, the reuse of the cooling pack 1 according to the present embodiment will be described. Normally, the cooling pack 1 after the use of cooling can be reused (secondary use) as a cooling agent by putting it in a freezer and cooling it for a certain period of time or longer. When the cooling pack 1 is reused, it can be put in a freezer for about 6 hours, frozen, and then used again as an ice pack. At this time, the cooling pack 1 according to the present embodiment contains sodium polyacrylate 11b inside, and the viscosity is higher than that of the conventional product. As a result, it is possible to exert a heat insulating effect, dramatically lengthen the cooling duration, which is particularly around -10 ° C, and maintain a low cooling temperature for a very long period of time as compared with the conventional case. Further, if it is reused and cooled in a freezer for about 10 minutes, for example, it cools immediately and the cooling effect can be obtained repeatedly as many times as necessary.
以上のように、本実施の形態に係る冷却パック１は、水１０ａを収容した水袋１０と、水袋１０及び水１０ａと反応して吸熱する冷却剤１１ａを内部に収容して封止される外袋１１とを有し、水袋１０を外からの衝撃により破裂させることにより水１０ａと冷却剤１１ａが吸熱反応をして冷却する。冷却パック１の外袋１１の中には、ポリアクリル酸ナトリウム１１ｂを含有させる。また、外袋１１に収容される冷却剤１１ａには、硝酸アンモニウム及び尿素の少なくとも一方が使用される。さらに、外袋１１の中に、シリカゲル１１ｃを含有させることができる。より具体的には、外袋１１には重量比で（ａ）冷却剤１１ａとしての尿素及び硝酸アンモニウムの少なくとも一方を35wt%、（ｂ）ポリアクリル酸ナトリウム１１ｂを1wt%、（ｃ）シリカゲル１１ｃを1wt%、水袋１０には（ｄ）水１０ａを63wt%（ただし（ａ）+（ｂ）+（ｃ）+（ｄ）＝100wt%とする）を主成分として配合する。この結果、冷却パック１は、従来の冷却パックと比較して、より冷却性能が向上し、特に、瞬間冷却の使用後に保冷剤として再利用する際の冷却性能を飛躍的に向上できる。より具体的には、冷却パック１を使用後の再使用時において、マイナス１０℃程度の冷却温度となる冷却持続時間を飛躍的に長くすることができる。 As described above, the cooling pack 1 according to the present embodiment is sealed by internally accommodating the water bag 10 containing the water 10a and the cooling agent 11a that reacts with the water bag 10 and the water 10a to absorb heat. The outer bag 11 is provided, and the water bag 10 is burst by an impact from the outside, so that the water 10a and the coolant 11a undergo an endothermic reaction to cool. Sodium polyacrylate 11b is contained in the outer bag 11 of the cooling pack 1. Further, at least one of ammonium nitrate and urea is used for the coolant 11a contained in the outer bag 11. Further, silica gel 11c can be contained in the outer bag 11. More specifically, the outer bag 11 is provided with (a) 35 wt% of at least one of urea and ammonium nitrate as the coolant 11a, (b) 1 wt% of sodium polyacrylate 11b, and (c) silica gel 11c by weight. 1 wt%, water bag 10 contains (d) water 10a as a main component of 63 wt% (provided that (a) + (b) + (c) + (d) = 100 wt%). As a result, the cooling pack 1 has further improved cooling performance as compared with the conventional cooling pack, and in particular, the cooling performance when reused as a cooling agent after the use of instantaneous cooling can be dramatically improved. More specifically, when the cooling pack 1 is reused after being used, the cooling duration at which the cooling temperature is about -10 ° C. can be dramatically increased.
＜保冷試験＞
次に、本実施の形態に係る冷却パック１に係る実施例１と、従来の冷却パックに係る比較例１とを用いて保冷試験を行った。なお、この試験は、冷却パックの保冷性能を判断するための試験である（経過時間に対する冷却パックの表面温度を測定した）。
<Cold insulation test>
Next, a cold insulation test was conducted using Example 1 according to the cooling pack 1 according to the present embodiment and Comparative Example 1 according to the conventional cooling pack. In addition, this test is a test for judging the cold insulation performance of a cooling pack (the surface temperature of the cooling pack with respect to the elapsed time was measured).
（実施例１）
実施例１では、冷却パック１の外袋１１には（ａ）冷却剤１１ａとしての尿素35wt%、（ｂ）ポリアクリル酸ナトリウム１１ｂを1wt%、（ｃ）シリカゲル１１ｃを1wt%、水袋１０には（ｄ）水１０ａを63wt%（ただし（ａ）+（ｂ）+（ｃ）+（ｄ）＝100wt%とする）を配合した。
(Example 1)
In Example 1, the outer bag 11 of the cooling pack 1 contains (a) 35 wt% urea as the coolant 11a, (b) 1 wt% sodium polyacrylate, (c) 1 wt% silica gel 11c, and the water bag 10. (D) Water 10a was mixed with 63 wt% (provided that (a) + (b) + (c) + (d) = 100 wt%).
（比較例１）
また、上記実施例１との比較のため、比較例１として、硝酸アンモニウムを３５ｇ及びシリカゲル少々を封入した外袋と、水４８ｇを封入した水袋とを拳骨を振り下ろす程度の衝撃を与え、水袋を破裂させて冷却剤と水とを反応させた。
(Comparative Example 1)
Further, for comparison with Example 1, as Comparative Example 1, an outer bag containing 35 g of ammonium nitrate and a small amount of silica gel and a water bag containing 48 g of water were given an impact to the extent that the fist bone was shaken down, and water was applied. The bag was ruptured to react the coolant with water.
上記のように作製した実施例１と比較例１とに係る各サンプルを評価した。評価方法・条件としては以下の測定を行った。 Each sample according to Example 1 and Comparative Example 1 prepared as described above was evaluated. The following measurements were made as evaluation methods and conditions.
・表面温度の測定
使用方法に基づいて、水袋を破裂させた後、冷却パックの裏面中央部に温度センサを貼り付けて表面温度を測定した。２５±１℃の恒温室内で、冷却パックの裏面を下にして試料を平らに静置した。各サンプルの試験結果を下記の［表１］に示した。
-Measurement of surface temperature After bursting the water bag based on the usage method, a temperature sensor was attached to the center of the back surface of the cooling pack to measure the surface temperature. The sample was allowed to stand flat on the back side of the cooling pack in a homeothermic chamber at 25 ± 1 ° C. The test results of each sample are shown in [Table 1] below.
［表１］に示す実施例１、及び比較例１に係る表面温度の結果から明らかなように、実施例１は、比較例１より冷却性能、及び冷却持続時間が延びていることが分かる。 As is clear from the results of the surface temperatures of Example 1 and Comparative Example 1 shown in [Table 1], it can be seen that the cooling performance and the cooling duration of Example 1 are longer than those of Comparative Example 1.
＜冷却パックの再使用時の保冷試験＞
次に、本実施の形態に係る冷却パック１に係る実施例２と、従来の冷却パックに係る比較例２とを用いて冷却パックの再使用時の保冷試験を行った。
<Cooling test when reusing the cooling pack>
Next, a cold insulation test at the time of reuse of the cooling pack was performed using Example 2 according to the cooling pack 1 according to the present embodiment and Comparative Example 2 according to the conventional cooling pack.
（実施例２）
実施例２では、冷却パック１の外袋１１には（ａ）冷却剤１１ａとしての尿素35wt%、（ｂ）ポリアクリル酸ナトリウム１１ｂを1wt%、（ｃ）シリカゲル１１ｃを1wt%、水袋１０には（ｄ）水１０ａを63wt%（ただし（ａ）+（ｂ）+（ｃ）+（ｄ）＝100wt%とする）を配合した。そして、この冷却パック１の瞬間冷却の使用後において冷凍庫に6時間載置したものを使用した。
(Example 2)
In Example 2, the outer bag 11 of the cooling pack 1 contains (a) 35 wt% urea as the coolant 11a, (b) 1 wt% sodium polyacrylate, (c) 1 wt% silica gel 11c, and the water bag 10. (D) Water 10a was mixed with 63 wt% (provided that (a) + (b) + (c) + (d) = 100 wt%). Then, after using the instantaneous cooling of the cooling pack 1, the one placed in the freezer for 6 hours was used.
（比較例２）
また、上記実施例２との比較のため、比較例２として、硝酸アンモニウムを３５ｇ及びシリカゲル少々を封入した外袋と、水４８ｇを封入した水袋とを有する冷却パックの使用後に、冷凍庫に6時間載置したものを使用した。そして、実施例２と比較例２とに係る各サンプルを評価し、その試験結果を図２や下記［表２］に示した。
(Comparative Example 2)
Further, for comparison with Example 2, as Comparative Example 2, after using a cooling pack having an outer bag containing 35 g of ammonium nitrate and a small amount of silica gel and a water bag containing 48 g of water, it was placed in a freezer for 6 hours. I used the one that was placed. Then, each sample according to Example 2 and Comparative Example 2 was evaluated, and the test results are shown in FIG. 2 and [Table 2] below.
・表面温度の測定
冷凍庫から取り出した冷却パックの裏面中央部に温度センサを貼り付けて表面温度を測定した。２５±１℃の恒温室内で、冷却パックの裏面を下にしてクーラーパック内に試料を平らに静置した。
-Measurement of surface temperature A temperature sensor was attached to the center of the back surface of the cooling pack taken out from the freezer to measure the surface temperature. The sample was allowed to stand flat in the cooler pack with the back side of the cooling pack facing down in a homeothermic chamber at 25 ± 1 ° C.
図２や［表２］に示す実施例２及び比較例２に係る表面温度の結果から明らかなように、実施例２は、比較例２よりマイナス１０℃程度の冷却温度となる冷却持続時間が飛躍的に長くなり、従来品に比較して再利用時の冷却性能が非常に向上していることが分かる。 As is clear from the results of the surface temperatures of Example 2 and Comparative Example 2 shown in FIG. 2 and [Table 2], Example 2 has a cooling duration of about -10 ° C. compared to Comparative Example 2. It can be seen that the temperature has increased dramatically and the cooling performance during reuse has been greatly improved compared to the conventional product.
なお、本発明は、上記の実施の形態の構成に限られず、発明の要旨を変更しない範囲で種々の変形が可能である。例えば、寒冷剤として硝酸アンモニウム、硝酸カリウムなどを用いても良い。また、上述の配合は、冷却パック１への使用に限定されるものではなく、（ａ）尿素及び硝酸アンモニウムの少なくとも一方を35wt%、（ｂ）ポリアクリル酸ナトリウム1wt%、（ｃ）シリカゲル1wt%、（ｄ）水63wt%（ただし（ａ）+（ｂ）+（ｃ）+（ｄ）＝100wt%とする）を主成分とする瞬間冷却用の配合剤として、冷却が必要な他の分野に応用できることは言うまでもない。 The present invention is not limited to the configuration of the above-described embodiment, and various modifications can be made without changing the gist of the invention. For example, ammonium nitrate, potassium nitrate or the like may be used as the coolant. Further, the above-mentioned formulation is not limited to use in the cooling pack 1, and (a) at least one of urea and ammonium nitrate is 35 wt%, (b) sodium polyacrylate 1 wt%, and (c) silica gel 1 wt%. , (D) 63 wt% water (however, (a) + (b) + (c) + (d) = 100 wt%) as a compounding agent for instant cooling, other fields that require cooling Needless to say, it can be applied to.
１ 冷却パック
１０ 水袋
１０ａ 水
１１ 外袋
１１ａ 冷却剤
１１ｂ ポリアクリル酸ナトリウム
１１ｃ シリカゲル
1 Cooling pack 10 Water bag 10a Water 11 Outer bag 11a Coolant 11b Sodium polyacrylate 11c Silica gel
Claims (6)
前記外袋の中に、ポリアクリル酸ナトリウムを含有させる、ことを特徴とする冷却パック。 It has a water bag containing water and an outer bag that contains and seals the water bag and a cooling agent that reacts with water and absorbs heat, and bursts the water bag by an impact from the outside. It is a cooling pack that cools water by endothermic reaction.
A cooling pack characterized in that sodium polyacrylate is contained in the outer bag.
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| JP2019045306A JP6877776B2 (en) | 2019-03-13 | 2019-03-13 | Cooling pack |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08280731A (en) * | 1995-04-18 | 1996-10-29 | Hakugen:Kk | Instantaneous coolant and instantaneous cooling material formed by using the same |
| JPH09192162A (en) * | 1996-01-19 | 1997-07-29 | Doukai Kagaku Kogyo Kk | Cold insulator component |
| JP2004091650A (en) * | 2002-08-30 | 2004-03-25 | Nippon Shokubai Co Ltd | Cold reserving material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0726671U (en) * | 1993-10-05 | 1995-05-19 | 株式会社ニチワ | Cooling bag |
| CN2826323Y (en) * | 2005-05-27 | 2006-10-11 | 香港江森发展有限公司 | Instant-cooling bag |
| CN105395313A (en) * | 2015-10-30 | 2016-03-16 | 珠海市雅莎生物科技有限公司 | Manufacturing method of ultralow-temperature instantaneous cooling ice bag |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08280731A (en) * | 1995-04-18 | 1996-10-29 | Hakugen:Kk | Instantaneous coolant and instantaneous cooling material formed by using the same |
| JPH09192162A (en) * | 1996-01-19 | 1997-07-29 | Doukai Kagaku Kogyo Kk | Cold insulator component |
| JP2004091650A (en) * | 2002-08-30 | 2004-03-25 | Nippon Shokubai Co Ltd | Cold reserving material |
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