JPH03230072A - Cooling sheet - Google Patents
Cooling sheetInfo
- Publication number
- JPH03230072A JPH03230072A JP2251790A JP2251790A JPH03230072A JP H03230072 A JPH03230072 A JP H03230072A JP 2251790 A JP2251790 A JP 2251790A JP 2251790 A JP2251790 A JP 2251790A JP H03230072 A JPH03230072 A JP H03230072A
- Authority
- JP
- Japan
- Prior art keywords
- water
- sheet
- absorbing resin
- heat
- nitric acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 229920005989 resin Polymers 0.000 claims abstract description 34
- 239000011347 resin Substances 0.000 claims abstract description 34
- 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 20
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 235000021355 Stearic acid Nutrition 0.000 claims description 13
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 13
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 13
- 239000008117 stearic acid Substances 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- PRORZGWHZXZQMV-UHFFFAOYSA-N azane;nitric acid Chemical compound N.O[N+]([O-])=O PRORZGWHZXZQMV-UHFFFAOYSA-N 0.000 abstract 4
- 239000006096 absorbing agent Substances 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 description 9
- 235000013305 food Nutrition 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011232 storage material Substances 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 2
- 239000005642 Oleic acid Substances 0.000 description 2
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 229920000578 graft copolymer Polymers 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 1
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- ATMLPEJAVWINOF-UHFFFAOYSA-N acrylic acid acrylic acid Chemical compound OC(=O)C=C.OC(=O)C=C ATMLPEJAVWINOF-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229960002446 octanoic acid Drugs 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 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
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/28—Quick cooling
Landscapes
- Packages (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、急速に冷却可能なシートに関し、例えば医
療用又は食品輸送用等に供することのできるシートに関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a sheet that can be rapidly cooled, and relates to a sheet that can be used for medical purposes, food transportation, etc., for example.
（従来技術及びその課題）
例えば生鮮食品等を輸送する際に、最近では蓄冷剤が多
く用いられており、蓄冷剤を予め冷凍庫内で予冷してお
き、この蓄冷剤を冷凍庫から取り出して食品等を包み、
輸送中に蓄冷剤から発せられる冷気により食品等を保冷
して輸送するのであるが、蓄冷剤を予冷するために相当
の時間を要し、緊急輸送用には使用ができないという問
題点があった。(Prior art and its problems) For example, when transporting fresh foods, etc., cold storage agents are often used these days, and the cold storage agents are pre-cooled in advance in a freezer, and this cold storage agent is taken out from the freezer to transport food, etc. wrapped around,
During transportation, the cold air emitted from the cold storage agent is used to keep food items cool and transported, but there was a problem in that it took a considerable amount of time to pre-cool the cold storage agent, making it impossible to use it for emergency transportation. .
（課題を解決するための手段）
本発明は上記従来の問題点に鑑み案出したものであって
、急速に冷却が可能な冷却シートを提供せんことを目的
とし、その第１の要旨は、少なくとも片面側が通水可能
で可撓性を有するシートであって、該シート内には吸水
性樹脂とともに、水に溶解する際吸熱する硝酸アンモニ
ウム等の吸熱薬剤が封入されていることである。(Means for Solving the Problems) The present invention was devised in view of the above-mentioned conventional problems, and aims to provide a cooling sheet capable of rapid cooling, and its first gist is as follows: At least one side of the sheet is water permeable and flexible, and the sheet contains a water-absorbing resin and an endothermic agent such as ammonium nitrate that absorbs heat when dissolved in water.
又、第２の要旨は、前記吸熱薬剤はステアリン酸等で表
面がコーティングされていることである。The second point is that the surface of the endothermic agent is coated with stearic acid or the like.
（作用）
前記第１の要旨において、シート内には吸水性樹脂とと
もに硝酸アンモニウム等の吸熱薬剤が封入されているた
め、シートを水に浸すと水がシート内に侵入して吸水性
樹脂内に水が吸水されるとともに、硝酸アンモニウム等
の吸熱薬剤に水が反応し、硝酸アンモニウム等が水に溶
解する際に負の溶解熱を生じ、周囲から吸熱して急激に
冷却することができ、又、同時に吸水性樹脂内の水をも
冷却することができ、緊急に冷却が必要な打撲患部等に
シートを巻着等することにより、急激に患部を冷却する
ことができ、しかも硝酸アンモニウム等の冷却による急
冷が終了した後には、吸水性樹脂内で予冷きれた水が冷
気を徐々に発し、長時間に亘り冷却することができ、医
療用又は食品等の輸送用にも良好に供することができる
。(Function) In the first gist, since an endothermic agent such as ammonium nitrate is sealed in the sheet together with a water-absorbing resin, when the sheet is immersed in water, water enters the sheet and water is absorbed into the water-absorbing resin. At the same time, water reacts with endothermic agents such as ammonium nitrate, and when ammonium nitrate dissolves in water, it generates negative heat of solution, which absorbs heat from the surroundings and rapidly cools down. It is also possible to cool the water in the plastic resin, and by wrapping the sheet around a bruised or affected area that needs urgent cooling, the affected area can be rapidly cooled. After finishing, the pre-cooled water inside the water-absorbing resin gradually emits cold air, and can be cooled for a long time, making it suitable for medical purposes or for transporting foods, etc.
又、前記第２の要旨において、吸熱薬剤をステアリン酸
等でコーティングしたことにより、シートを水に浸した
時に、先に吸水性樹脂に良好に水が吸い込まれ、硝酸ア
ンモニウム等の吸熱薬剤にはステアリン酸が溶けるまで
水が反応せず、吸水性樹脂と吸熱薬剤に対する水の吸水
時間に差を設けて、吸水性樹脂内に完全に水が吸収され
た後に吸熱薬剤に水が反応し、良好な冷却能を発揮する
ことができる。In addition, in the second gist, by coating the endothermic agent with stearic acid, etc., when the sheet is immersed in water, water is well absorbed into the water-absorbing resin first, and the endothermic agent such as ammonium nitrate is coated with stearic acid. The water does not react until the acid dissolves, and by setting a difference in the water absorption time for the water-absorbing resin and the endothermic agent, the water reacts with the endothermic agent after the water is completely absorbed into the water-absorbing resin, resulting in a good result. It can demonstrate its cooling ability.
（実施例）
第１図及び第２図は本例の包装シートを示し、図におい
て、包装シート１は、多数の袋状空間部１ａを縦方向及
び横方向の溝部１ｂにて区画形成し１枚のシート状に形
成したものであって、第２図の断面図で示すように、表
面部及び裏面部を構成する透水性シートＳ、、Ｓ、が一
定間隔毎に互いに貼り付けされて溝部１ｂが形成され、
この溝部ｌｂ、ｌｂ間に相当の空間を有する袋状空間部
１ａが形成され、この袋状空間部１ａの内部には粒状の
吸水樹脂２が相当量封入されたものである。(Example) Fig. 1 and Fig. 2 show a packaging sheet of this example, and in the figure, a packaging sheet 1 has a plurality of bag-like spaces 1a divided by vertical and horizontal grooves 1b. As shown in the cross-sectional view of FIG. 1b is formed,
A bag-like space 1a having a considerable space is formed between the grooves lb, and a considerable amount of granular water-absorbing resin 2 is sealed inside this bag-like space 1a.
尚、第２図のものは更に一方側の透水性シートＳ１の表
面に防水シート３を貼着して構成したものである。The one shown in FIG. 2 is constructed by further adhering a waterproof sheet 3 to the surface of the water-permeable sheet S1 on one side.
この透水性シートＳ、、Ｓ、は水及び空気を通すことの
できるシート材にて構成されたものであって、そのよう
なシート材として、紙、不織布、織物９編物、綿等の繊
維質シート等が挙げられる。The water-permeable sheets S, S, are made of a sheet material that allows water and air to pass through, and examples of such sheet materials include paper, nonwoven fabric, knitted fabric, and fibrous material such as cotton. Examples include sheets.
又、防水シート３は水を通さないシート材にて形成され
ており、例えばポリエチレン、ポリプロピレン、ポリ塩
化ビニル等のプラスチック製シートで構成される。又、
プラスチック製シートに替えてアルミ箔が使用される場
合もある。The waterproof sheet 3 is made of a sheet material that does not allow water to pass through, and is made of a plastic sheet such as polyethylene, polypropylene, polyvinyl chloride, or the like. or,
Aluminum foil is sometimes used instead of plastic sheets.
又、袋状空間部ｌａ内に封入きれる吸水樹脂２は、例え
ば、澱粉−アクリロニトリルグラフト重合体の加水分解
物、セルロース−アクリロリトリルグラフト重合体の加
水分解物等の単量体と架橋剤との共重合体、例えば架橋
ポリアクリルアミド及びその加水分解物、架橋されたス
ルホン化ポリエチレン、架橋ポバール、特開昭５２−１
４６８９号及び特開昭５２−２７４５５号記載の架橋さ
れたビニルエステルー不飽和カルボン酸共重合体ケン化
物、架橋されたポリアクリル酸塩及びアクリル酸−アク
リル酸エステル共重合体、架橋されたイソブチレン−無
水マレイン酸共重合体、及び架橋ポリエチレンオキシド
等が挙げられる。さらに自己架橋性を有する重合物、例
えば自己架橋型ポリアクリル酸、特公昭５４−３０７１
０号に記載の樹脂や分子中に少なくとも水酸基とカルボ
キシラード基を含有する高分子重合体、例えば特公昭５
４−３７９９４号に記載の樹脂でもよい。In addition, the water-absorbing resin 2 that can be sealed in the bag-like space la is made of a monomer such as a hydrolyzate of a starch-acrylonitrile graft polymer, a hydrolyzate of a cellulose-acrylolytrile graft polymer, and a crosslinking agent. copolymers such as crosslinked polyacrylamide and its hydrolyzate, crosslinked sulfonated polyethylene, crosslinked poval, JP-A-52-1
4689 and JP-A-52-27455, cross-linked vinyl ester-unsaturated carboxylic acid copolymer saponified products, cross-linked polyacrylates and acrylic acid-acrylic acid ester copolymers, cross-linked isobutylene -maleic anhydride copolymers, crosslinked polyethylene oxide, and the like. Furthermore, polymers having self-crosslinking properties, such as self-crosslinking polyacrylic acid, Japanese Patent Publication No. 54-3071
The resin described in No. 0 or a high molecular weight polymer containing at least a hydroxyl group and a carboxylade group in the molecule, such as the Japanese Patent Publication No. 5
The resin described in No. 4-37994 may also be used.
尚、澱粉又はセルロースと水溶性単量体及び／又は加水
分解により水溶性となる単量体と架橋剤とを必須性分と
して重合させ、必要により加水分解を行なうことにより
得られる吸水樹脂であってもよい。In addition, it is a water-absorbing resin obtained by polymerizing starch or cellulose, a water-soluble monomer and/or a monomer that becomes water-soluble by hydrolysis, and a crosslinking agent as essential components, and performing hydrolysis if necessary. It's okay.
上記の吸水性樹脂は１種類であっても又２種以上用いた
ものであってもよく、吸水性能としては２０〜２０００
ｇ／ｇ程度が好ましく、又、吸水性樹脂２の形状につ
いては特に限定はなく、粉末状２粒子状、フレーク状、
繊維状の何れの形状であってもよい。The above-mentioned water-absorbing resin may be used alone or in combination of two or more types, and has a water absorption performance of 20 to 2000.
g/g is preferable, and the shape of the water-absorbing resin 2 is not particularly limited, and may be powdery, 2-particulate, flaky,
It may be in any fibrous shape.
又、本例の包装シート１の袋状空間部ｌａ内には吸水性
樹脂２とともに粒状の硝酸アンモニウムが封入されてい
る。この硝酸アンモニウムの各粒子は、その表面がステ
アリン酸でコーティングされたものとなっている。Further, particulate ammonium nitrate is sealed together with the water-absorbing resin 2 in the bag-like space la of the packaging sheet 1 of this example. The surface of each ammonium nitrate particle is coated with stearic acid.
このように構成きれた冷却シートを水に浸すと、透水性
シートＳ、から水が内部に浸透して、先ず水は吸水性樹
脂２に吸水される。即ち、硝酸アンモニウムはその表面
がステアリン酸でコーティングされているため、ステア
リン酸が溶けるまでの間は吸水せず、先に吸水性樹脂２
内に良好に吸水が行なわれ、吸水性樹脂２は吸水に従っ
て膨張する。吸水性樹脂２内に完全に水が吸収された際
にステアリン酸が徐々に溶けて、内部の硝酸アンモニウ
ムが水を吸水し、吸水により硝酸アンモニウムは溶解す
るが、この溶解時に負の溶解熱を発し、周囲の熱を吸熱
することができる。従って、硝酸アンモニウムの溶解に
より急激に冷却きれることとなり、例えば水に浸した状
態で、この包装シート１を打撲した患部等に巻着等する
ことにより、患部を急激に冷却して応急処置することが
でき、又、火傷等の際にも水に浸した状態で包装シート
を患部に当てることにより、患部を急激に冷却し応急処
置することができる。When the cooling sheet thus constructed is immersed in water, water permeates into the interior through the water-permeable sheet S, and is first absorbed by the water-absorbing resin 2. In other words, since the surface of ammonium nitrate is coated with stearic acid, it does not absorb water until the stearic acid dissolves, and it is first coated with water-absorbing resin 2.
Water is well absorbed into the interior, and the water-absorbing resin 2 expands as the water is absorbed. When water is completely absorbed into the water-absorbing resin 2, the stearic acid gradually dissolves, and the ammonium nitrate inside absorbs the water, and the ammonium nitrate dissolves due to the absorption of water, but during this dissolution, it emits negative heat of dissolution. It can absorb heat from the surrounding area. Therefore, the dissolution of ammonium nitrate results in rapid cooling. For example, by wrapping the packaging sheet 1 around a bruised area while soaking it in water, it is possible to rapidly cool the affected area and provide first aid. Also, in the case of burns, etc., by applying the packaging sheet to the affected area while soaked in water, the affected area can be rapidly cooled and emergency treatment can be performed.
又、硝酸アンモニウムの溶解が終わった段階では、硝酸
アンモニウムにより前記吸水性樹脂２内の水が冷却され
蓄冷されているため、次にこの吸水性樹脂２内の水が徐
々に冷気を発し、長時間に亘り患部を良好に冷やすこと
ができる。In addition, at the stage when ammonium nitrate has finished dissolving, the water in the water-absorbing resin 2 is cooled and stored by ammonium nitrate, so next, the water in the water-absorbing resin 2 gradually emits cold air and cools for a long time. The affected area can be cooled well.
このように包装シート１は緊急な医療用に使用すること
ができるとともに、釣り等の際に、水を浸して急激に冷
却させ、釣った魚等を良好に冷却することができる。In this way, the packaging sheet 1 can be used for emergency medical purposes, and when fishing or the like, it can be immersed in water to rapidly cool the fish, etc. caught.
その他、包装シート１を予冷する時間がない時等に、水
に浸して肉、魚等を包み輸送用に供することができ、輸
送中において長時間に亘り冷気を発して、包んだ内部の
肉等を良好に保冷することができる。尚、時間がある場
合には水に浸した状態で冷凍庫内で予冷して使用するこ
ともでき、又、−度使用して硝酸アンモニウムが消滅し
た段階では、冷凍庫内で予冷することにより、吸水性樹
脂２内の水を予冷して蓄冷剤として用いることができる
ものである。In addition, when there is no time to pre-cool the packaging sheet 1, it is possible to wrap meat, fish, etc. by soaking it in water and use it for transportation. etc. can be kept cool. If you have time, you can soak it in water and pre-cool it in the freezer before use.Also, when the ammonium nitrate has disappeared after using it for a few degrees, you can pre-cool it in the freezer to increase its water absorption. The water in the resin 2 can be pre-cooled and used as a cold storage agent.
尚、本例においては、硝酸アンモニウムを吸熱薬剤とし
て用いたが、その他の水に溶解する際に負の溶解熱を示
す薬剤に置き代えることも可能である。又、ステアリン
酸等による硝酸アンモニウム表面のコーティングは、吸
水性樹脂２との関係で吸水時間に差を生じさせるための
ものであり、吸水性樹脂２内に十分に吸水される時間の
間、吸熱薬剤が水と反応しないようにできれば良く、ス
テアリン酸等のコーティングの厚みは内部に封入される
吸水性樹脂２の量等により適宜調節されるものである。In this example, ammonium nitrate was used as the endothermic agent, but it may be replaced with another agent that exhibits a negative heat of solution when dissolved in water. Furthermore, the coating of the ammonium nitrate surface with stearic acid or the like is intended to cause a difference in water absorption time in relation to the water absorbent resin 2, and the endothermic agent is The thickness of the coating made of stearic acid or the like can be appropriately adjusted depending on the amount of the water-absorbing resin 2 sealed inside.
尚、前記ステアリン酸に代えて、カプリル酸。Note that caprylic acid is used instead of stearic acid.
カプリン酸、ラウリン酸、ミリスチン酸、パルミチン酸
、オレイン酸、エキストラオレイン酸、グツセリン、ソ
ルビタン脂肪酸エステル、グリセリン脂肪酸エステル、
シリコン樹脂製剤、ソルビタン脂肪酸エステル製剤、及
びこれらを配合したもの等の詣肪酸類で硝酸アンモニウ
ムをコーティングしても良い。Capric acid, lauric acid, myristic acid, palmitic acid, oleic acid, extra oleic acid, gutserin, sorbitan fatty acid ester, glycerin fatty acid ester,
Ammonium nitrate may be coated with fatty acids such as silicone resin preparations, sorbitan fatty acid ester preparations, and mixtures thereof.
（発明の効果）
本発明の冷却シートは、少なくとも片面側が通水可能で
可撓性を有するシートであって、該シート内には吸水性
樹脂とともに、水に溶解する際吸熱する硝酸アンモニウ
ム等の吸熱薬剤が封入されていることにより、シートを
水に浸すと内部の吸水性樹脂に水が吸収されるとともに
、水が硝酸アンモニウム等の吸熱薬剤と反応して、吸熱
薬剤が溶解する際に急激に冷却し、急激な冷却能を発揮
して医療用又は食品輸送用等の緊急時に良好に使用する
ことができ、吸熱薬剤が無くなった後には吸水性樹脂の
蓄冷能により徐々に冷気が発揮されて、長時間に亘り冷
却能を発揮することができる効果を有する。(Effects of the Invention) The cooling sheet of the present invention is a flexible sheet that allows water to pass through at least one side, and the sheet contains a water-absorbing resin as well as an endothermic material such as ammonium nitrate that absorbs heat when dissolved in water. Because the drug is encapsulated, when the sheet is immersed in water, the water is absorbed by the water-absorbing resin inside, and the water reacts with the endothermic agent such as ammonium nitrate, causing rapid cooling as the endothermic agent dissolves. However, it exhibits rapid cooling ability and can be used effectively in emergencies such as medical use or food transportation.After the endothermic agent is used up, the water-absorbing resin's cold storage ability gradually releases cold air. It has the effect of being able to exhibit cooling ability over a long period of time.
又、前記吸熱薬剤はステアリン酸等で表面がコーティン
グされていることにより、水に浸した時にステアリン酸
等のコーティングが溶けるまでの間、吸熱薬剤は水と反
応せず、十分に吸水性樹脂内に水を吸収させることがで
き、より良好に長時間に亘る冷却能を発揮させることが
できる効果を有する。In addition, because the surface of the endothermic agent is coated with stearic acid, etc., when immersed in water, the endothermic agent does not react with water until the stearic acid coating dissolves, and it is sufficiently absorbed into the water-absorbing resin. It has the effect of being able to absorb water and exhibit better cooling ability over a long period of time.
図は本発明の一実施例を示し、第１図は本例包装シート
の全体斜視図、第２図は第１図のＡ−Ａ線断面拡大図で
ある。
１・・・包装シート
１ｂ・・・溝部
３・・・防水シート
１ａ・・・袋状空間部
２・・・吸水樹脂
Ｓｌ、Ｓｌ・・・透水性シートThe drawings show one embodiment of the present invention; FIG. 1 is an overall perspective view of the packaging sheet of this example, and FIG. 2 is an enlarged cross-sectional view taken along line A--A in FIG. 1. 1...Packaging sheet 1b...Groove portion 3...Waterproof sheet 1a...Bag-like space 2...Water-absorbing resin Sl, Sl...Water-permeable sheet
Claims (2)
ートであって、該シート内には吸水性樹脂とともに、水
に溶解する際吸熱する硝酸アンモニウム等の吸熱薬剤が
封入されていることを特徴とする冷却シート。(1) At least one side of the sheet is water permeable and flexible, and the sheet is filled with a water-absorbing resin and an endothermic agent such as ammonium nitrate that absorbs heat when dissolved in water. cooling sheet.
ングされている特許請求の範囲第１項記載の冷却シート
。(2) The cooling sheet according to claim 1, wherein the surface of the endothermic agent is coated with stearic acid or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2251790A JPH03230072A (en) | 1990-02-01 | 1990-02-01 | Cooling sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2251790A JPH03230072A (en) | 1990-02-01 | 1990-02-01 | Cooling sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03230072A true JPH03230072A (en) | 1991-10-14 |
Family
ID=12084966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2251790A Pending JPH03230072A (en) | 1990-02-01 | 1990-02-01 | Cooling sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03230072A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63140273A (en) * | 1986-12-02 | 1988-06-11 | タチバナペ−パ−ウエア−株式会社 | Low-temperature insulating article |
| JPH01204989A (en) * | 1988-02-12 | 1989-08-17 | Taiko Rozai Kk | Bagged material for cooling |
| JPH01230689A (en) * | 1988-03-11 | 1989-09-14 | Chisso Corp | Persistent coolant |
-
1990
- 1990-02-01 JP JP2251790A patent/JPH03230072A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63140273A (en) * | 1986-12-02 | 1988-06-11 | タチバナペ−パ−ウエア−株式会社 | Low-temperature insulating article |
| JPH01204989A (en) * | 1988-02-12 | 1989-08-17 | Taiko Rozai Kk | Bagged material for cooling |
| JPH01230689A (en) * | 1988-03-11 | 1989-09-14 | Chisso Corp | Persistent coolant |
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