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- Ice_pack abstract "An ice pack or gel pack is a plastic sac of ice, or of refrigerant gel or liquid. Both the ice pack and the non-toxic gel (which is mostly water) can absorb a considerable amount of heat due to the high enthalpy of fusion of water. These packs are commonly used to keep food cool in coolers for consumption later in the day; or as a cold compress to alleviate the pain of minor injuries; or in insulated shipping containers to keep products cool during transport.Ice packs are used in coolers to keep perishable foods (especially meats, dairy products, eggs, etc.) below the 41–165 °F (5–74 °C) danger zone when outside a refrigerator or freezer. The amount of ice needed to cool a given mass of food varies greatly, depending on: the initial temperature of the food; the temperature, solidity, and mass of the ice used; the insulating value of the container both are put into; the ambient temperature around the container; and whether the container is exposed to direct sunlight or kept in the shade.Water has an unusually high enthalpy of fusion and a convenient melting temperature (one accessible by household freezers). Additives to improve the properties of water are often used. For example, substances can be added to prevent bacterial growth in the pack, or to prevent the water from solidifying so it remains a thick gel throughout use.Gel packs are often made of non-toxic materials that will remain a slow flowing gel, and therefore will not spill easily or cause contamination if the container breaks. Gel packs may be made by adding hydroxyethyl cellulose (Cellusize) or vinyl-coated silica gel.Instant cold packs use an endothermic reaction to cool down quickly. These types of ice packs are stored at room temperature rather than needing to be physically cooled before use. When one breaks a tube inside the pack, two chemicals mix or react and absorb enough energy to produce a cooling effect. Common types include solid ammonium nitrate dissolving in water.The first hot and cold pack was introduced in 1948 with the name Hot-R-Cold-Pak and could be chilled in a refrigerator or heated in hot water.The first reusable hot cold pack that could be heated in boiling water or heated in a microwave was first patented by Jacob Spencer of Nortech Labs in 1973 (Patent No. 3,780,537). Reusable hot cold packs differ from instant cold packs in that they can be either frozen or microwaved.".
- Ice_pack thumbnail Ice_pack.jpg?width=300.
- Ice_pack wikiPageID "2420839".
- Ice_pack wikiPageRevisionID "598182710".
- Ice_pack hasPhotoCollection Ice_pack.
- Ice_pack subject Category:Cooling_technology.
- Ice_pack subject Category:Food_preservation.
- Ice_pack subject Category:Medical_equipment.
- Ice_pack subject Category:Medical_treatments.
- Ice_pack comment "An ice pack or gel pack is a plastic sac of ice, or of refrigerant gel or liquid. Both the ice pack and the non-toxic gel (which is mostly water) can absorb a considerable amount of heat due to the high enthalpy of fusion of water.".
- Ice_pack label "Eisbeutel".
- Ice_pack label "IJszak".
- Ice_pack label "Ice pack".
- Ice_pack label "Аккумулятор холода".
- Ice_pack label "保冷剤".
- Ice_pack label "冰袋".
- Ice_pack sameAs Eisbeutel.
- Ice_pack sameAs 保冷剤.
- Ice_pack sameAs 아이스_팩.
- Ice_pack sameAs IJszak.
- Ice_pack sameAs m.07bw73.
- Ice_pack sameAs Q1146414.
- Ice_pack sameAs Q1146414.
- Ice_pack wasDerivedFrom Ice_pack?oldid=598182710.
- Ice_pack depiction Ice_pack.jpg.
- Ice_pack isPrimaryTopicOf Ice_pack.
