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The first of the instant cold packs was a liquid-type invented by Albert A. Robbins and patented August 11, 1959. Robbins' "Chemical Freezing Package" involved and outer pouch containing two separate compartments for water and ammonium nitrate that would mix and freeze when the user split a perforation between the two - say by hitting or snapping the package as we would with the modern variety.
Robbins' patent was assigned to Kwik-Kold of America. Parent company Cardinal Health continues to market this, and the more recently invented gel-type cold packs, to this day.
Wiki User
∙ 13y ago
Marisa Avery
The first ice pack was invented by Albert A. Robbins in 1959. His version was different than what we see today, as it was an "instant" ice pack meant for keeping food and drinks cold for short periods of time. The ice pack would stay at room temperature until the cooling effect was activated by cracking it.
How a cold pack works:
Endothermic chemical reactions can also be used to produce cold packs, such as those used in sports medicine. Chemical cold packs have similar engineering to hot packs, with reactants in a pouch that react when the barrier between them is broken by squeezing the package. A typical endothermic process used in cold packs is simply the dissolving of ammonium chloride in water. The reactants have the bond energy required to break the bonds of ammonium chloride to form ammonium and chloride ions and dissolve them in water.
The reaction mixture obtains this energy by absorbing it from the surroundings or from the water it is dissolving in, making the surroundings and the water feel cold. This is useful for sports medicine because when a cold pack is pressed against hot flesh, it will draw the heat out of the hot part of the body, thus cooling it off. The body is part of the surroundings to the cold pack reaction, and so heat from the body is absorbed into the cold pack. The energy the pack absorbs from the body can help continue the endothermic reaction, keeping the pack cold.
Wiki User
∙ 17y agoCold packs were invented 25 years ago by Cardinal Health.
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Does nexcare instant cold packs have amonia nitrate?
According to the msds it should, if you can see 2640 written on it anywhere.
Why can't you refreeze instant cold packs?
actually, you can.
Can you make a rocket with a instant cold pack?
no
What is the cold can a flame be?
A flame cannot be any cold but always hot even at the first instant it is lit.
Why hot and cold packs are very convenient to use?
Both types (hot and cold) of packs can be easily transported and used in travel. They do not take up a lot of room in a bag or box. If someone were to get hurt, a cold pack can quickly be used to help them. The same goes with a hot pack.
Instant cold packs can be reused?
Instant cold packs cannot be reused once they are activated. The chemical makeup inside the package was created for one time use.
Where can you find ammonium nirate?
inside most instant cold packs
Can you refreeze or refrigerate an instant cold pack?
can you refreeze cold packs
Does nexcare instant cold packs have amonia nitrate?
According to the msds it should, if you can see 2640 written on it anywhere.
What are some retailers that sell cold packs?
Cold packs can be purchased at most big box stores such as Walmart or Target in their first aid section. They are commonly known as ice packs where one can either break the bag to make instant cold to treat injuries or they can be shaken to create the same effect.
Why can't you refreeze instant cold packs?
actually, you can.
Who invented instant noodles?
Momofuku Ando invented instant noodlesMomofuku Ando invented instant noodles
Are sodium acetate instant heat packs mixtures?
Yes, the compound in the packs is a supersaturated solution of sodium acetate.
Who invented Carnation Instant Breakfast?
Carnation Instant Breakfast was invented in 1964. Carnation does not list the inventor on its website.
What Yu-Gi-Oh booster packs have Instant Fusion?
You can find "Instant Fusion" in Cyberdark Impact and Champion Pack Game 7.
What keeps lunch cold?
Ice packs keeps lunches cold.
How do cold packs work?
Instant hot and cold packs are used by athletes to quickly and conveniently treat an injury. They last for about 20 minutes. The packs take advantage of chemicals that either absorb a lot of heat or release a lot of heat when dissolved in water. When a chemical process absorbs a lot of heat it is called endothermic. When heat is released, it is called exothermic. In cold packs, ammonium nitrate is used because it absorbs a lot of heat when it dissolves in water. The water and ammonium nitrate are in separate compartments in the pack. When the cold pack is needed, the chambers are broken and the ammonium nitrate dissolves in the water, absorbing heat and making the pack as cold as 0C. In hot packs, calcium chloride or magnesium sulphate are used, along with the water. They release heat when the chambers are broken and the chemical dissolves in the water. A hot pack can reach a temperature of 90C. :)
