WO2004052251A1 - 保冷袋 - Google Patents
保冷袋 Download PDFInfo
- Publication number
- WO2004052251A1 WO2004052251A1 PCT/JP2003/015528 JP0315528W WO2004052251A1 WO 2004052251 A1 WO2004052251 A1 WO 2004052251A1 JP 0315528 W JP0315528 W JP 0315528W WO 2004052251 A1 WO2004052251 A1 WO 2004052251A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bag
- cold
- cool
- cold insulation
- temperature
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/10—Cooling bags, e.g. ice-bags
- A61F7/106—Cooling bags, e.g. ice-bags self-cooling, e.g. using a chemical reaction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F2007/0292—Compresses or poultices for effecting heating or cooling using latent heat produced or absorbed during phase change of materials, e.g. of super-cooled solutions
Definitions
- the present invention has low temperature flexibility, and, c bright relates larger cold bag cold capacity
- Insulated bags containing heat insulating materials have been used to cool the head and cool the affected area during bodily fever.
- a cold insulating material such as a cold insulating composition
- a compound containing a water-soluble polymer such as carboxymethyl cellulose and polyvinyl alcohol, a surfactant such as glycerin fatty acid ester, and a freezing point depressant such as ethylene glycol (Japanese Patent Publication No. 59-35944).
- refrigerators for general household use are gradually becoming lower in temperature, and in particular, with the spread of freezers, conventional cold insulator compositions have been frozen, and flexibility cannot be maintained. Therefore, a cold pack filled with these cold insulators will have poor fit to the head or affected area, and the cold insulator may be cooled to o ° c or less, so apply directly to the head or affected area to be cooled. And frostbite.
- an aqueous solution of a crystalline inorganic compound is filled in a cooling bag as a cooling medium, and the crystals absorb heat from an external heat source (for example, human heat) and melt, and radiate heat on the surface of the cooling bag to become crystals again.
- an external heat source for example, human heat
- the principle that heat reflux is generated inside the bag and the melting and recrystallization is repeated to continuously absorb the heat from the heat source, for example, if this is used for pillows, etc.
- the head becomes an external heat source and heat is removed from it, so the head is cooled and a pillow with a cooling effect is obtained.
- sodium phosphate and sodium sulfate are used for this kind of cool bags.
- active bentonite mainly composed of montmorillonite clay composed of sodium sulfate and aluminosilicate is prepared by adding water, and preferably, a filler containing carbon fiber is mixed therein.
- a proposal has been made to seal the product in a cool bag (Japanese Patent Application Laid-Open No. 91-296165).
- Japanese Patent Application Laid-Open No. 91-296165 Japanese Patent Application Laid-Open No. 91-296165
- an object of the present invention is to provide a cool bag that maintains an appropriate temperature that does not become too cold while enhancing the fit to the head and the affected area. Disclosure of the invention
- the present invention has been made in view of the above-mentioned problems, and as a result of intensive studies on a cold insulating material used for a cold insulating bag, surprisingly, without using a polymer polymer or the like for the cold insulating material, o
- a latent heat storage material having a melting point of ° c or more
- the latent heat storage material rapidly precipitates crystals without causing supercooling, and is flexible during cooling.
- the present invention has been found to maintain the properties and feel to the head and the affected part.
- the refrigerating bag of the present invention is obtained by filling a refrigerating material in which inorganic fine particles and alcohols are added to an aqueous solution of a latent heat storage material having a melting point of 0 ° C. or more, into a synthetic resin bag. It is characterized by.
- Latent heat storage materials having a melting point of 0 ° C or more include sodium sulfate hydrate Nitrate), sodium sulfite, sodium phosphate and the like.
- inorganic fine particles examples include fine particles such as fine powder silica (fumed silica), precipitated silica (hydrous silicate), fine powder alumina, and fine powder hollow ceramics.
- alcohols examples include ethyl alcohol, propyl alcohol, pentinole alcohol, and propylene glycol.
- FIG. 1 is a graph showing, in chronological order, a temperature change in a cooled insulated bag of the present invention in a thermostat.
- the cold insulation bag of the present invention is obtained by filling an aqueous solution of a latent heat storage material having a melting point of not less than o ° C with a cold insulation material obtained by adding inorganic fine particles and alcohols into a synthetic resin bag.
- Examples of the latent heat storage material having a melting point of o ° C or higher include sodium sulfate hydrate (glauberous salt), sodium sulfite, and sodium phosphate.
- the latent heat storage material is used in an amount of 10 to 70 parts by weight, preferably 20 to 60 parts by weight, based on 100 parts by weight of the cold insulator.
- the freezing point can be further reduced by adding sodium chloride, ammonium chloride, urea and the like, as is known. Therefore, the combined use of such a freezing point depressant is also one embodiment of the present invention.
- the freezing point depressant is used in an amount of 5 to 90 parts by weight, preferably 10 to 80 parts by weight, based on 100 parts by weight of the cold insulator.
- the inorganic fine particles include fine particles such as fine powder silica (fumed silica), precipitated silica (hydrated caic acid), fine powder alumina, and fine powder hollow ceramics.
- the particle diameter (primary particle diameter, number average) of these inorganic fine particles is 5 to 50 nm, preferably 8 to 40 nm.
- These inorganic fine particles may be used by mixing them.
- the inorganic fine particles are used in an amount of 1 to 20 parts by weight, preferably 2 to 10 parts by weight, based on 100 parts by weight of the cold insulator.
- Examples of the alcohols include ethyl alcohol, propyl alcohol, and butyl alcohol which do not dissolve the latent heat storage material. As a result, when the temperature of the cold insulator aqueous solution is lowered, the hydrate crystals are easily precipitated without causing the solution to be supercooled.
- the use amount of alcohols can be appropriately selected according to the type of the latent heat storage material, but it is 1 to 20 parts by weight, preferably 1 to 10 parts by weight, based on 100 parts by weight of the latent heat storage material. Used by weight.
- the material of the synthetic resin bag may be a material having flexibility.
- nylon'polyethylene laminate sheet, ethylene / butyl acetate copolymer or ethylene / methyl methacrylate copolymer is used.
- the insulated bag may be further housed in a synthetic resin or cloth outer bag for use.
- Figure 1 shows the results of plotting the change over time in the surface temperature of the cool bag in a thermostat to see the cooling effect of the cool bag.
- the thermostat was set at 40 ° C. Cool the cool bags to 11 o ° c in advance.
- a cooling bag made of only water and finely divided silica was prepared and similarly cooled to 11 ° C.
- a temperature sensor was attached to each of the cold storage bags, placed in a thermostat, and the temperature change over time was measured.
- the horizontal axis represents time
- the vertical axis represents temperature
- line 1 represents the temperature in the tank
- line 2 represents the temperature change of the cool bag of the present invention
- line 3 represents the temperature change of the cool bag for comparison.
- the temperature in the tank dropped once due to the cooling bag, but returned to the original 40 ° C.
- the temperature of the cold storage bag for comparison was between 0 ° C and 10 ° C-the temperature gradually increased, and the line was bent, because it took away latent heat when the ice melted. The temperature then rose and reached 40 ° C after 3 hours.
- the cool bag of the present invention does not have a bent portion from 0 ° C to 10 ° C, but does not reach 40 ° C after reaching approximately 30 ° C three hours later, and is gradually and almost constant. You can see that the temperature is being taken. This is to remove latent heat during the process of dissolving sodium sulfate 10 hydrate. In other words, when it is used on the human body, it keeps a cool feeling forever.
- Example 2 Except that alcohol was not used, a cold insulation bag was produced in the same manner as in Example 1. Since the cold insulator solution continued to be supercooled and crystals did not precipitate at room temperature for a long period of time, it had to be cooled in a refrigerator in order to precipitate hydrate crystals.
- a cooling bag was produced in the same manner as in Example 1 except that anhydrous ultrafine silica and alcohol were not used. Since the liquid does not gel in the first place, the contents are liquid when it is melted, and when it is cooled in a refrigerator, the precipitated crystals are solidified into a plate shape, and it cannot be used as a cool bag. became. Industrial applicability The cold storage bag of the present invention does not become plate-like even when cooled, maintains flexibility, and has a very good feel. If the set temperature is about 20 ° C, it can be regenerated as a cool bag at room temperature without necessarily cooling in a refrigerator. In addition, since the inorganic fine particles are used as a substance for gelling, when a salt is used to lower the melting point as in the case of a high-molecular polymer, the water retention capacity does not decrease.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- General Chemical & Material Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Packages (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003289174A AU2003289174A1 (en) | 2002-12-06 | 2003-12-04 | Cold insulation bag |
JP2004558409A JPWO2004052251A1 (ja) | 2002-12-06 | 2003-12-04 | 保冷袋 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002355442 | 2002-12-06 | ||
JP2002-355442 | 2002-12-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004052251A1 true WO2004052251A1 (ja) | 2004-06-24 |
Family
ID=32500788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/015528 WO2004052251A1 (ja) | 2002-12-06 | 2003-12-04 | 保冷袋 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPWO2004052251A1 (ja) |
AU (1) | AU2003289174A1 (ja) |
TW (1) | TW200417361A (ja) |
WO (1) | WO2004052251A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006096820A (ja) * | 2004-09-28 | 2006-04-13 | Kobe Steel Ltd | 蓄冷剤の過冷却解消方法 |
JP2009501895A (ja) * | 2005-07-20 | 2009-01-22 | スプレイトリー、ダビッド、デレック、グラント | 飲物冷却装置 |
WO2021049833A1 (ko) * | 2019-09-11 | 2021-03-18 | 오씨아이 주식회사 | 친환경 보냉제 조성물 및 이를 포함하는 보냉 팩 |
WO2023090698A1 (ko) * | 2021-11-18 | 2023-05-25 | 오씨아이 주식회사 | 친환경 보냉제 조성물 및 이를 포함하는 보냉 팩 |
WO2023090696A1 (ko) * | 2021-11-18 | 2023-05-25 | 오씨아이 주식회사 | 친환경 보냉제 조성물 및 이를 포함하는 보냉 팩 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0834975A (ja) * | 1994-07-21 | 1996-02-06 | Japan Pionics Co Ltd | 冷熱剤 |
JPH08218063A (ja) * | 1995-02-10 | 1996-08-27 | Asahi Denka Kogyo Kk | 潜熱蓄熱材組成物 |
JP2869633B2 (ja) * | 1996-05-02 | 1999-03-10 | 清二 市原 | 恒温冷媒及びその応用品 |
US5976400A (en) * | 1997-09-19 | 1999-11-02 | Thermo Solutions, Inc. | Phase change material and use |
-
2003
- 2003-12-04 JP JP2004558409A patent/JPWO2004052251A1/ja active Pending
- 2003-12-04 TW TW92134157A patent/TW200417361A/zh unknown
- 2003-12-04 AU AU2003289174A patent/AU2003289174A1/en not_active Abandoned
- 2003-12-04 WO PCT/JP2003/015528 patent/WO2004052251A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0834975A (ja) * | 1994-07-21 | 1996-02-06 | Japan Pionics Co Ltd | 冷熱剤 |
JPH08218063A (ja) * | 1995-02-10 | 1996-08-27 | Asahi Denka Kogyo Kk | 潜熱蓄熱材組成物 |
JP2869633B2 (ja) * | 1996-05-02 | 1999-03-10 | 清二 市原 | 恒温冷媒及びその応用品 |
US5976400A (en) * | 1997-09-19 | 1999-11-02 | Thermo Solutions, Inc. | Phase change material and use |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006096820A (ja) * | 2004-09-28 | 2006-04-13 | Kobe Steel Ltd | 蓄冷剤の過冷却解消方法 |
JP4698995B2 (ja) * | 2004-09-28 | 2011-06-08 | 株式会社神戸製鋼所 | 蓄冷剤の過冷却解消方法 |
JP2009501895A (ja) * | 2005-07-20 | 2009-01-22 | スプレイトリー、ダビッド、デレック、グラント | 飲物冷却装置 |
WO2021049833A1 (ko) * | 2019-09-11 | 2021-03-18 | 오씨아이 주식회사 | 친환경 보냉제 조성물 및 이를 포함하는 보냉 팩 |
KR20210031575A (ko) * | 2019-09-11 | 2021-03-22 | 오씨아이 주식회사 | 친환경 보냉제 조성물 및 이를 포함하는 보냉 팩 |
KR102629439B1 (ko) | 2019-09-11 | 2024-01-29 | 오씨아이 주식회사 | 친환경 보냉제 조성물 및 이를 포함하는 보냉 팩 |
WO2023090698A1 (ko) * | 2021-11-18 | 2023-05-25 | 오씨아이 주식회사 | 친환경 보냉제 조성물 및 이를 포함하는 보냉 팩 |
WO2023090696A1 (ko) * | 2021-11-18 | 2023-05-25 | 오씨아이 주식회사 | 친환경 보냉제 조성물 및 이를 포함하는 보냉 팩 |
Also Published As
Publication number | Publication date |
---|---|
AU2003289174A1 (en) | 2004-06-30 |
AU2003289174A8 (en) | 2004-06-30 |
JPWO2004052251A1 (ja) | 2006-04-06 |
TW200417361A (en) | 2004-09-16 |
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